CN111997163B - A cable trench drainage structure and drainage method for embankment-road integration project - Google Patents

Abstract

The invention discloses a dyke and road integrated engineering cable trench drainage structure. The energy dissipation drainage culvert comprises an energy dissipation drainage culvert water inlet pipe, a drainage connecting pipe, a cable trench water outlet pipe and an energy dissipation drainage culvert; the drainage connecting pipe is positioned below the side of the water outlet pipe of the cable trench and above the side of the water inlet pipe of the energy dissipation drainage culvert; one end of the drainage connecting pipe is communicated with a water outlet pipe of the cable trench, and the other end of the drainage connecting pipe is communicated with a water inlet pipe of the energy dissipation drainage culvert; the energy dissipation drainage culvert water inlet pipe is anchored on the side wall of the energy dissipation drainage culvert; the energy dissipation drainage culvert is positioned above the dike hip side and embedded in the dike slope; the height between the energy dissipation drainage culvert and the dike hip platform is less than or equal to 0.5 m; the energy dissipation drainage culvert is of a hollow structure with one open end; the water seepage well is connected with the lower end of the cable trench; the cable trench water outlet pipe is connected to the lower end of the side of the seepage well. The invention has the advantages of achieving the purpose of energy dissipation and buffering of cable trench drainage with lower manufacturing cost and smaller structure and achieving good landscape effect. The invention also discloses a drainage method of the dyke-road integrated engineering cable trench drainage structure.

Description

Drainage structure and drainage method of cable trench for embankment and road integration project

technical field

The invention relates to the technical field of drainage of embankment and road integration engineering, in particular to a cable trench drainage structure for embankment and road integration engineering. The invention also relates to the drainage method of the cable trench drainage structure of the embankment-road integration project.

Background technique

With the rapid development of cities, the integration of ecological green development and urban infrastructure road network construction, the embankment and road integration project is one of the products of green ecological city development, and has gradually become a new focus in engineering construction in recent years. The waterfront construction of the embankment and road project, under the basic premise of meeting the requirements of flood control, creates an excellent urban waterfront landscape space, and at the same time integrates the embankment top road with the urban trunk road network, and the combination of roadscape and waterscape improves the ecological space for urban travel The effect is the new focus of green city construction.

The embankment project combines the advantages of the embankment and the road at the same time. In terms of road drainage, the waterfront characteristics of the embankment project make the road drainage refer to the embankment project, and the embankment slope is used for scattered drainage (unorganized drainage) to lakes or rivers, without the need for subgrade drainage. Buried centralized rainwater pipes.

The embankment project has the characteristics of urban roads. The urban roads at the top of the embankment need to be equipped with necessary lighting and cable laying. The cable trench can be buried under the sidewalk on the backwater side, which will not affect the flood control function of the embankment, and can also provide convenient maintenance conditions. The drainage problems faced by the cable trenches of traditional urban roads also exist in embankment projects. Traditional urban roads can connect the water accumulated in the cable trenches to the rainwater pipe network through PVC pipes for drainage. One method does not work. If the water in the cable trench is directly drained to the embankment slope with PVC pipes, for the ecological turf embankment slope, the concentrated water flow will cause erosion of the embankment slope, resulting in soil erosion, and will also have an adverse impact on the stability of the embankment slope.

The existing patent CN104153452A, "Cable Trench Drainage Structure and Cable Trench Construction Method", discloses a cable trench drainage structure and a cable trench construction method for automatically draining the water accumulated in the cable trench in the passage section; it discloses a water collecting trench A connecting pipe is arranged between the seepage well and the connecting pipe is inclined, which is beneficial for the water in the sump to be quickly discharged into the seepage well through the connecting pipe; it can be seen that this patent is used to discharge the water accumulated in the cable trench into the seepage well.

Aiming at the problem of anti-scouring of embankment slopes, some existing traditional methods, such as building concrete drainage ditches down the slope, can prevent the erosion of the slope by water flow. However, the drainage ditches in this method are long and the construction cost is high. For the ecological landscape embankment, the strip-shaped concrete drainage ditch further destroys the integrity of the turf ecological slope protection and affects the landscape effect of the ecological embankment; while the height difference between the drainage ditch and the embankment platform is large, and the drainage ditch is far from the platform. , making inspection and maintenance difficult.

Therefore, there is an urgent need to develop a structure suitable for drainage of cable trenches in the embankment-road integration project, which is anti-scour, convenient for inspection and maintenance.

SUMMARY OF THE INVENTION

The first object of the present invention is to provide a cable trench drainage structure for embankment and road integration engineering, which can achieve the purpose of energy dissipation and buffering with a lower cost and a smaller structure, and achieve a good landscape effect through structural treatment, which is convenient for inspection. and maintenance; solve the problem of anti-scour of embankment slope, energy dissipation and deceleration of water flow, and difficulty in inspection and maintenance.

The second object of the present invention is to provide a drainage method for the drainage structure of the cable trench in the embankment-road integration project, so as to form a complete channel for drainage of the cable trench, so that the accumulated water in the cable trench can be safely and smoothly drained to the embankment slope.

In order to achieve the above-mentioned first object of the present invention, the technical scheme of the present invention is: a cable trench drainage structure for embankment-road integration project, which is characterized in that it includes an energy dissipation drainage culvert water inlet pipe, a drainage connection pipe, a cable trench water outlet pipe and An energy dissipation drainage culvert; the drainage connection pipe is located under the side of the outlet pipe of the cable trench, and is located above the side of the inlet pipe of the energy dissipation drainage culvert;

One end of the drainage connecting pipe is communicated with the outlet pipe of the cable trench, and the other end is communicated with the inlet pipe of the energy dissipation drainage culvert;

the energy dissipation drainage culvert water inlet pipe is anchored on the side wall of the energy dissipation drainage culvert;

The energy dissipation and drainage culvert is located above the side of the embankment and is embedded in the embankment slope; the height between the energy dissipation and drainage culvert and the embankment is less than or equal to 0.5m;

The energy dissipation drainage culvert is a hollow structure with one end open;

The cable trench is arranged under the sidewalk on the back side of the embankment;

The seepage well is connected to the lower end of the cable trench;

The water outlet pipe of the cable trench is connected to the lower end of the seepage well.

In the above technical solution, the energy dissipation drainage culvert includes a drainage outlet plate, an energy dissipation sill, an energy dissipation pool, a top plate, a side wall, a connecting plate and a back wall;

the top plate is located above the energy dissipation pool and above the side of the drainage outlet plate;

The drainage outlet plate, the energy dissipation sill, the energy dissipation pool, the top plate, the connecting plate and the sides of the back wall are all connected by the side wall;

The water inlet end of the energy dissipation pool is connected with the connecting plate, and the water outlet end is vertically connected with the energy dissipation sill;

The upper end of the back wall is vertically connected with the top plate, and the lower end is vertically connected with the connecting plate; the upper end of the energy dissipation sill is connected with the drainage outlet plate;

The drainage outlet plate, the energy dissipation sill, the energy dissipation pool, the top plate, the side wall, the connecting plate and the back wall form a hollow open trapezoidal structure.

In the above technical solution, the energy dissipation sill is a vertical sill wall;

The energy dissipation pool is a flat bottom plate;

The energy-dissipating drainage culvert water inlet pipe is arranged on the back wall and communicated with the energy-dissipating pool.

In the above technical solution, the energy-dissipating drainage culvert water inlet pipe is in the shape of a round pipe and is an anti-corrosion steel pipe;

The drainage connecting pipe is PVC drainage pipe or PE pipe or anti-corrosion steel pipe;

The water outlet pipe of the cable trench is in the shape of a round pipe and is an anti-corrosion steel pipe.

In the above technical solution, the energy dissipation and drainage culvert is an integral pouring structure made of reinforced concrete or steel fiber concrete.

In the above technical solution, the drainage connecting pipe is connected with the water outlet pipe of the cable trench through an elbow, and is connected with the water inlet pipe of the energy dissipation drainage culvert through an elbow; the cable trench outlet pipe is anchored at the lower end of the seepage well. .

In the above-mentioned technical solution, a waste-retaining grille is arranged at the open end of the energy-dissipating drainage culvert.

In order to achieve the second purpose of the present invention, the technical solution of the present invention is: the drainage method for the drainage structure of the cable trench in the integration of embankments and roads is characterized in that: it includes the following steps:

Step 1: The water flow enters the cable trench through the sidewalk and then flows into the seepage well;

Step 2: The water flowing into the seepage well passes through the cable trench water outlet pipe, the drainage connection pipe, the energy dissipation and drainage culvert water inlet pipe, the energy dissipation pool, the energy dissipation sill, and the drainage outlet plate, and flows to the embankment platform;

Step 3: Repeat steps 1 to 2 until the drainage of the water in the cable trench is completed.

The present invention has the following advantages:

(1) The present invention is provided with a drainage connection pipe, and the accumulated water in the cable trench of the embankment can be drained to the vicinity of the embankment slope through the connection pipe, avoiding the deposition of rainwater in the cable trench;

(2) Through the effective buffering of the energy-dissipating drainage culvert, the present invention reduces the flow rate of the accumulated water in the cable trench of the embankment, dissipates the water energy, optimizes the flow pattern, and becomes a dispersed unorganized water flow, which greatly reduces the impact on the water. Erosion effects of embankment slopes;

(3) The energy-dissipating drainage culvert in the present invention is buried in the embankment slope filling, which has almost no influence on the ecological landscape of the embankment and road, and the landscape effect is obviously better than that of the concrete drainage ditch;

(4) The structure size of the energy dissipation drainage culvert in the present invention is small (the size of the present invention is about 0.8m×1.2m, and the drainage ditch is about 0.5m×6.0m), the amount of concrete and other materials is small, and the shape is simple, and it can be modularized Mass production, low cost;

(5) The structure of the energy dissipation drainage culvert in the present invention is simple, the energy dissipation drainage culvert can be prefabricated in advance, the on-site construction is convenient, and the construction period is shortened;

(6) The distance between the energy dissipation drainage culvert structure and the embankment body and platform in the present invention is less than or equal to 0.5m, and the upper covering soil is very thin (the thickness of the upper covering soil is about 0.1-0.2m), the structure is simple, and it is convenient for normal operation. Inspection and maintenance during operation.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the cable trench drainage of the embankment project of the present invention.

Figure 2 is a perspective view of the three-dimensional structure of the energy dissipation drainage culvert in the present invention.

FIG. 3 is a top view of the structure of the energy dissipation drainage culvert in the present invention.

FIG. 4 is a plan view of the trash grill in the present invention.

In Figure 3, A represents the diffusion angle, that is, the angle between two symmetrically arranged side walls; B represents the symmetry axis of the energy dissipation and drainage culvert.

In the figure 1-drainage outlet plate, 2-energy dissipation sill, 3-energy dissipation pool, 4-energy dissipation drainage culvert inlet pipe, 5-roof, 6-side wall, 7- embankment sill, 8-drainage connection pipe , 9- embankment slope, 10- embankment body fill, 11- cable trench outlet pipe, 12- water seepage well, 13- cable trench, 14- sidewalk, 15- energy dissipation drainage culvert, 16- elbow pipe, 17- connecting plate , 18- back wall, 19- trash grille, 20- trash grille hook.

Detailed ways

The implementation of the present invention will be described in detail below with reference to the accompanying drawings, but they do not constitute a limitation of the present invention, but are merely examples. At the same time, the advantages of the present invention are made clearer and easier to understand by the description.

It should be noted that the methods described in the following embodiments are conventional methods unless otherwise specified, and the materials can be obtained from commercial sources unless otherwise specified; in the description of the present invention, the term "horizontal" ", "Portrait", "Top", "Bottom", "Front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside" The orientation or positional relationship indicated by , "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation , constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "horizontal", "vertical", "overhanging" etc. do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement", "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or a fixed connection; it can be a direct connection, or an indirect connection through an intermediate medium, or an internal connection between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

The anti-scour and energy dissipation principle of the present invention is as follows: the drainage water flow enters the energy dissipation drainage culvert to obtain a larger flow area and effectively reduce the water flow speed; through the conversion of pressure flow to non-pressure flow, the flow state of the water flow is effectively optimized; The energy dissipating sill weakens the flow energy of the water and further reduces the flow velocity; the shape of the eight-shaped bell mouth (that is, the energy dissipating drainage culvert in the present invention) disperses the concentrated water flow; when the water flows to the embankment slope and the platform, the scour of the water flow affects basically eliminated.

Referring to the attached drawings, it can be seen that a cable trench drainage structure for the embankment-road integration project includes an energy dissipation drainage culvert water inlet pipe 4, a drainage connection pipe 8, a cable trench water outlet pipe 11 and an energy dissipation drainage culvert 15; the drainage connection pipe 8 is located in the Below the side of the water outlet pipe 11 of the cable trench, and above the side of the water inlet pipe 4 of the energy dissipation drainage culvert;

One end of the drainage connection pipe 8 is communicated with the cable trench water outlet pipe 11, and the other end is communicated with the energy dissipation drainage culvert water inlet pipe 4; the drainage connection pipe 8 is communicated with the seepage well 12 through the cable trench water outlet pipe 11, The drainage culvert water inlet pipe 4 is communicated with the energy dissipation drainage culvert 15, so as to divert the water flow in the upstream cable trench 13 and the seepage well 12 to the downstream energy dissipation drainage culvert 15, so as to achieve energy dissipation at a lower cost and with a smaller structure. The purpose of buffering is to reduce the impact of water flow on the embankment slope in the cable trench 13;

The energy dissipation drainage culvert water inlet pipe 4 is anchored on the side wall of the energy dissipation drainage culvert 15, and the energy dissipation drainage culvert water inlet pipe 4 is communicated with the energy dissipation drainage culvert 15, and is used for introducing the water flow in the drainage connection pipe 8 into the energy dissipation culvert Drainage culvert 15, to achieve the purpose of energy dissipation and buffer;

The energy dissipation and drainage culvert 15 is located above the side of the embankment platform 7 and is embedded in the embankment slope 9, and the energy dissipation and drainage culvert is embedded in the fill of the embankment slope, which has almost no impact on the ecological landscape of the embankment and road, and the landscape effect is obvious. Better than concrete drainage ditch; the height between the energy dissipation culvert 15 and the embankment platform 7 is less than or equal to 0.5m, and the energy dissipation drainage culvert 15 is closer to the platform, which is convenient for inspection and maintenance during normal operation;

The energy-dissipating drainage culvert 15 is a hollow structure with one end open; the concentrated water flow is dispersed through the shape of the eight-character bell mouth of the energy-dissipating drainage culvert 15; The structure of the energy-draining culvert is simple, the energy-dissipating drainage culvert can be prefabricated in advance, and the on-site construction is simple, which is conducive to shortening the construction period;

The energy dissipation and drainage culvert 15 has a symmetrical structure, and the axis of symmetry is the direction of water flow; it is beneficial to the optimization of the water flow and the production of prefabricated models;

The sidewalk 14 is arranged on the backwater side of the top of the embankment, and the cable trench 13 is arranged below the sidewalk 14 on the backwater side of the top of the embankment;

The seepage well 12 is connected to the lower end of the cable trench 13;

The cable trench water outlet pipe 11 is connected to the lower end of the seepage well 12 (as shown in FIG. 1 ), and guides the water flow to the drainage connection pipe 8 by gravity flow.

Further, the upper part of the roof 5, the drainage outlet plate 1 and the lower part of the energy dissipation pool 3 are filled with soil 10 for the embankment body. The upper part of the roof 5 is covered with very thin soil, and the structure is simple, which is convenient for inspection and maintenance during normal operation.

Further, the energy dissipation drainage culvert 15 includes a drainage outlet plate 1, an energy dissipation sill 2, an energy dissipation pool 3, a top plate 5, a side wall 6, a connecting plate 17 and a back wall 18;

The top plate 5 is located above the energy dissipation pool 3 and above the drainage outlet plate 1 side;

The side edges of the drainage outlet plate 1, the energy dissipation sill 2, the energy dissipation pool 3, the top plate 5, the connecting plate 17 and the back wall 18 are all connected by the side wall 6;

The water inlet end of the energy dissipation pool 3 is connected to the connecting plate 17, and the water outlet end is vertically connected to the energy dissipation sill 2;

The upper end of the back wall 18 is vertically connected to the top plate 5, and the lower end is vertically connected to the connecting plate 17; the upper end of the energy dissipation sill 2 is connected to the drainage outlet plate 1;

The drainage outlet plate 1, the energy dissipation sill 2, the energy dissipation pool 3, the top plate 5, the side walls 6, the connecting plate 17, and the back wall 18 form a hollow open trapezoidal structure, which is the energy dissipation drainage culvert 15 (as shown in the figure). 1. As shown in Figure 2 and Figure 3), the hollow open trapezoidal structure of the energy dissipation drainage culvert 15 can effectively increase the water flow area, reduce the flow velocity, optimize the water flow conditions, and help to enhance the energy dissipation effect.

Further, the energy dissipation sill 2 is a vertical sill wall, which is used as the energy dissipation of the water flow; the energy dissipation pool 3 is a flat bottom plate; If it is more chaotic, the chaotic flow state can be stabilized through the diffused flat bottom plate energy dissipation tank 3 .

The energy-dissipating drainage culvert water inlet pipe 4 is arranged on the back wall 18 and communicated with the energy-dissipating pool 3 through a connecting plate (as shown in Figures 1 and 2). The pool 3 is connected, and is used to introduce the water flow in the drainage connection pipe 8 into the energy dissipation pool 3 to achieve the purpose of energy dissipation and buffering; the energy dissipation drainage culvert water inlet pipe 4 can be integrally cast with the energy dissipation drainage culvert 15, and can be prefabricated in advance. , On-site construction is simple, which is conducive to shortening the construction period.

Further, the energy-dissipating drainage culvert water inlet pipe 4 is in the shape of a circular tube and is an anti-corrosion steel pipe, which improves the corrosion resistance of the energy-dissipating drainage culvert water inlet pipe 4 and prevents sewage from corroding the energy-dissipating drainage culvert water inlet pipe 4;

The drainage connecting pipe 8 is a round drainage pipe, which can be a PVC pipe, a PE pipe or an anti-corrosion steel pipe, which is replaceable, maintainable and anti-corrosion;

The cable trench water outlet pipe 11 is in the shape of a round tube and is an anti-corrosion steel pipe, and the cable trench water outlet pipe 11 is an anti-corrosion steel pipe, which improves the corrosion resistance of the cable trench water outlet pipe 11 and prevents sewage from corroding the cable trench water outlet pipe 11; The water outlet pipe 11 is used to communicate the seepage well 12 with the drainage connection pipe 8 .

Further, the energy dissipation and drainage culvert 15 is an integrally cast structure made of reinforced concrete or steel fiber concrete, and the energy dissipation and drainage culvert 15 can be prefabricated in advance, which is convenient for on-site construction and shortens the construction period.

Further, the cable trench water outlet pipe 11 and the drainage connection pipe 8 are arranged at a certain oblique angle, and the drainage connection pipe 8 and the cable trench water outlet pipe 11 are connected through the elbow 16 and are connected with the energy dissipation drainage. The culvert water inlet pipe 4 is connected by the elbow pipe 16 (as shown in Figure 1), and the material of the elbow pipe 16 is the same as that of the drainage connection pipe 8; it can not only facilitate on-site installation and later maintenance, but also ensure the stability of the connection structure of the present invention;

The cable trench water outlet pipe 11 is anchored at the lower end of the seepage well 12 to ensure a stable structure.

Further, there is a trash grille 19 arranged on the open end of the energy dissipation drainage culvert 15, and the trash grille 19 is arranged on the side of the drainage outlet plate 1, the top plate 5 and the side wall 6; The trash grill hook 20 is connected with the top plate 5 and anchored above the top plate 5; the trash grill 19 is connected with the trash grill hook 20 located above it to prevent external debris from entering the interior of the energy dissipation and drainage culvert; The grid 19 is made of steel wire mesh, and the wire mesh spacing is 2-5 cm.

The trash grille hook 20 is a round straight steel bar, and the diameter of the steel bar is greater than or equal to 12 mm. When making the energy-dissipating drainage culvert 15, the hooks 20 of the trash-retaining grille are embedded in the roof 5, and the embedded depth is greater than or equal to 5 cm.

Referring to the accompanying drawings, it can be known that the drainage method of the cable trench drainage structure of the project of integrating embankment and road includes the following steps:

Step 1: The water flows into the cable trench 13 through the sidewalk 14 and then flows into the seepage well 12;

Step 2: The water flowing into the seepage well 12 passes through the cable trench water outlet pipe 11, the drainage connection pipe 8, the energy dissipation and drainage culvert water inlet pipe 4, the energy dissipation pool 3, the energy dissipation sill 2, and the drainage outlet plate 1, and flows to the embankment. Taiwan 7;

Step 3: Repeat steps 1 to 2 until the drainage of the water in the drain is completed (as shown in Figure 1 and Figure 2).

In order to more clearly illustrate the advantages of the cable trench drainage structure and drainage method for the embankment-road integration project of the present invention compared with the prior art, the staff compared the two technical solutions, and the comparison results The following table:

It can be seen from the above table that, compared with the prior art, the cable trench drainage structure of the embankment-road integration project and its drainage method have lower construction cost, achieve the purpose of energy dissipation and buffering with a smaller structure, and achieve good results through structural treatment. The landscape effect and the energy dissipation of the water flow, the slope body is drained, the construction cost is low, and no additional land is required.

Example

The present invention will now be described in detail by taking the application of the present invention to the embankment slope drainage of a cable trench in a new embankment-road integration project as an example, which also has a guiding role for the present invention to be applied to the embankment slope drainage of cable trenches in other embankment and road projects.

The brief introduction of a new embankment and road integration project is as follows:

A new embankment and road integration project, the flood control standard is once in 50 years, the embankment level is 3, the slope ratio of the side of the embankment is 1:3, and a first-class embankment is set up. The elevation of the embankment is 3.0m from the top of the embankment. It is 3m, the top of the embankment is the main road of the city, the width of the top of the embankment is 22m, there are 4 lanes in both directions, the total width of the motor vehicle lane is 16m, the sidewalks are on both sides, the single width is 3m, the cable trench is arranged under the sidewalk on the backwater side, and the size of the cable trench is 1.0m ×1.2m. In order to ensure the safe operation of the cable trench, it is necessary to drain the accumulated water in the cable trench to the side slope of the backwater.

In this embodiment, the drainage structure for a cable trench in a new embankment-road integration project includes: a cable trench outlet pipe 11, a drainage connection pipe 8, an energy dissipation drainage culvert water inlet pipe 4, an energy dissipation drainage culvert 15 (energy dissipation drainage culvert 15). The culvert 15 is a composite structure, and the energy dissipation and drainage culvert 15 includes a drainage outlet plate 1, an energy dissipation sill 2, an energy dissipation pool 3, a top plate 5, a side wall 6, a connecting plate 17, and a back wall 18; the overall drainage structure of this embodiment is The connection sequence along the water flow direction is: cable trench water outlet pipe 11, drainage connection pipe 8, energy dissipation and drainage culvert water inlet pipe 4, energy dissipation pool 3, energy dissipation sill 2, drainage outlet plate 1 (as shown in Figure 1 and Figure 2) .

In this embodiment, the new embankment-road integration project has a height of H, a first-level platform, the embankment-slope ratio is 1:2 to 1:3, the sidewalk 14 is arranged on the leeward side of the embankment top, and the cable trench 13 is located below the sidewalk 14. Arranged horizontally. The cable trench water outlet pipe 11 is an anti-corrosion steel pipe, and is connected to the cable trench 13 through the water collecting well 12. The cable trench water outlet 11 is arranged horizontally and perpendicular to the axis of the embankment.

The drainage connecting pipe 8 is perpendicular to the axis of the embankment, along the direction of the embankment slope, and is arranged to the lower left. The drainage connecting pipe 8 is connected to the upper right cable trench water outlet pipe 11 and the lower left energy dissipation drainage culvert water inlet pipe 4 respectively through the elbow 16 .

In order to enhance the mechanical performance of the energy-dissipating drainage culvert 15, in this embodiment, the roof 5, the energy-dissipating sill 2, and the energy-dissipating pool 3 in the energy-dissipating drainage culvert 15 are of reinforced concrete structures, and the diameter of the reinforcement bars of the reinforced concrete structure is 12 mm. , Reinforcement standard HRB400, energy dissipation sill 2 is arranged perpendicular to the direction of water flow, concrete strength grade C30. The energy dissipation drainage culvert water inlet pipe 4 adopts Φ150 anti-corrosion steel pipe. The energy-dissipating drainage culvert water inlet pipe 4 and the energy-dissipating drainage culvert 15 are connected by consolidation and poured at the same time to become an integrated prefabricated product.

The energy dissipation drainage culvert 15 is a diffused integrated structure, including an energy dissipation pool 3, an energy dissipation sill 2, a drainage outlet plate 1, a top plate 5, a side wall 6, a connecting plate 17 and a back wall 18; the energy dissipation pool 3, the drainage outlet Plate 1 and top plate 5 are diffused trapezoidal flat plates, energy dissipation pool 3, drainage outlet plate 1 and top plate 5 are arranged horizontally; energy dissipation sill 2 is a vertical sill wall and is perpendicular to the direction of water flow; Symmetrical structure, in the specific arrangement, the symmetry axis of the energy dissipation drainage culvert 15 is perpendicular to the dike axis (as shown in Figure 1, Figure 2, Figure 3).

The angle between the two side walls 6 arranged symmetrically is the diffusion angle A (as shown in Figure 3). In this embodiment, the diffusion effect and the size of the efficiency pool are comprehensively considered, and the diffusion angle is set to 38°.

The height of the side wall 6 is the height difference between the top plate 5 and the drainage outlet plate 1. In order to ensure the stable force of the structure at the water inlet pipe 4 of the energy dissipation drainage culvert, the height of the side wall 6 is greater than or equal to 1.5 times the diameter of the water inlet pipe 4. In this embodiment, the height of the side wall 6 is twice the diameter of the water inlet pipe 4 . The side wall 6 near the exit is a slope, and its slope is consistent with the embankment slope ratio. In this embodiment, the side wall 6 near the exit is the embankment slope with a slope of 1:3.

The height of the vertical energy dissipation sill 2 and the length of the energy dissipation pool 3 along the water flow direction have a greater impact on the energy dissipation effect. Equal to 40cm, the low value is used in this example.

This embodiment includes the actual on-site construction technology, considering the embankment filling, rolling, the layout of energy dissipation drainage culverts 15, the layout of drainage connection pipes 8 and the cable trench 13, and the construction sequence is reasonably arranged, which not only satisfies the compaction of the embankment body, but also ensures drainage. The structure was implemented smoothly. In this example, the embankment body is first considered to be rolled to the bottom elevation of the energy dissipation pool 3, and the C10 concrete cushion is used to reinforce the foundation filling of the energy dissipation drainage culvert 15 at this elevation, and then the prefabricated energy dissipation drainage culvert 15 is arranged on the In the preset position, after the energy dissipation drainage culvert 15 is stabilized, the drainage connection pipe 8 is erected, and then the upper embankment body is filled with soil, and the erection angle of the drainage connection pipe 8 is continuously adjusted to ensure the construction accuracy, and the drainage connection pipe 8 is rolled to the vicinity of the drainage connection pipe 8. A small manual grinding machine is used at the site. After the rolling is to the top of the embankment, the cable trench 13 is excavated, and the position of the drainage connecting pipe 8 is reviewed. If there is any deviation, the connecting piece can be used to correct the deviation. After the concrete pouring of the cable trench 13 is completed, the drainage connecting pipe 8 is connected to the cable trench water collecting well 12, and backfilled and compacted.

In practical engineering applications, the diameter of the drainage connection pipe 8 in this embodiment is greater than or equal to 100mm, and the steel pipe material is preferably used to increase the strength. According to the freezing level, the thickness of drainage outlet plate 1, energy dissipation sill 2, energy dissipation pool 3, top plate 5, side wall 6, connecting plate 17 and back wall 18 is greater than or equal to 10cm.

Conclusion: In this embodiment, through the above drainage structure, the drainage water flow enters the energy dissipation drainage culvert to obtain a larger flow area and effectively reduce the water flow velocity; The energy dissipation sill weakens the water flow energy and further reduces the flow rate; the concentrated water flow is dispersed through the shape of the eight-shaped bell mouth; when the water flow reaches the embankment slope and the platform, the scouring effect of the water flow is basically eliminated.

Other unexplained parts belong to the prior art.

Claims (7)

1. The utility model provides an embankment unification engineering cable pit drainage structures which characterized in that: the drainage water flow enters an energy dissipation drainage culvert, a larger flow area is obtained, and the water flow speed is effectively reduced; the flow state of the water flow is effectively optimized through the conversion from pressure flow to no pressure flow; the flow energy of water is weakened through the energy dissipation ridges, and the flow velocity is further reduced; the concentrated water flow is dispersed through an energy dissipation drainage culvert in the shape of a splayed horn mouth; when water flows to the dike slope and the berm, the washing influence of the water flow is basically eliminated;

the embankment-in-one engineering cable trench drainage structure comprises an energy dissipation drainage culvert water inlet pipe (4), a drainage connecting pipe (8), a cable trench water outlet pipe (11) and an energy dissipation drainage culvert (15); the drainage connecting pipe (8) is positioned below the side of the water outlet pipe (11) of the cable trench and above the side of the water inlet pipe (4) of the energy dissipation drainage culvert;

one end of the drainage connecting pipe (8) is communicated with the cable trench water outlet pipe (11), and the other end of the drainage connecting pipe is communicated with the energy dissipation drainage culvert water inlet pipe (4);

the energy dissipation drainage culvert water inlet pipe (4) is anchored on the side wall of the energy dissipation drainage culvert (15);

the energy dissipation drainage culvert (15) is positioned above the dike hip platform (7) side and is embedded in the dike slope (9); the height between the energy dissipation drainage culvert (15) and the dike hip platform (7) is less than or equal to 0.5m, and the thickness of the upper soil covering is 0.1-0.2 m; the upper part of the top plate (5), the drainage outlet plate (1) and the lower part of the energy dissipation pool (3) are filled with soil (10) of the dyke body, and the soil covering on the upper part of the top plate (5) is very thin, so that the inspection and the maintenance in the normal operation period are facilitated;

the energy dissipation drainage culvert (15) is of a hollow structure with one open end;

the cable trench (13) is arranged below a sidewalk (14) on the downstream side of the embankment top;

the water seepage well (12) is connected with the lower end of the cable trench (13);

the water outlet pipe (11) of the cable trench is connected to the lower end of the side of the water seepage well (12);

the energy dissipation drainage culvert (15) comprises a drainage outlet plate (1), an energy dissipation ridge (2), an energy dissipation pool (3), a top plate (5), side walls (6), a connecting plate (17) and a back wall (18);

the top plate (5) is positioned above the energy dissipation pool (3) and above the side of the drainage outlet plate (1);

the side edges of the drainage outlet plate (1), the energy dissipation ridge (2), the energy dissipation pool (3), the top plate (5), the connecting plate (17) and the back wall (18) are connected through the side wall (6);

the water inlet end of the energy dissipation pool (3) is connected with the connecting plate (17), and the water outlet end of the energy dissipation pool is vertically connected with the energy dissipation ridge (2);

the upper end of the back wall (18) is vertically connected with the top plate (5), and the lower end of the back wall is vertically connected with the connecting plate (17); the upper end of the energy dissipation ridge (2) is connected with the drainage outlet plate (1);

the drainage outlet plate (1), the energy dissipation ridge (2), the energy dissipation pool (3), the top plate (5), the side wall (6), the connecting plate (17) and the back wall (18) form a hollow open type trapezoidal structure, namely an energy dissipation drainage culvert (15), and the energy dissipation drainage culvert (15) is in the hollow open type trapezoidal structure, so that the flow area of water flow can be effectively increased, the flow speed is reduced, the water flow condition is optimized, and the energy dissipation effect is enhanced;

the energy dissipation ridge (2) is a vertical ridge wall and is used for dissipating energy of water flow; the energy dissipation pool (3) is a flat bottom plate; the length of the flat bottom plate is not less than 40cm, the water outlet flow state of the energy dissipation drainage culvert water inlet pipe (4) is relatively disordered, and the disordered flow state is stabilized through the flat bottom plate energy dissipation pool (3) in a diffusion shape.

2. The embankment-on-one engineering cable trench drainage structure according to claim 1, wherein:

the energy dissipation drainage culvert water inlet pipe (4) is arranged on the back wall (18) and is communicated with the energy dissipation pool (3).

3. The embankment-on-one engineering cable trench drainage structure according to claim 2, wherein: the energy dissipation drainage culvert water inlet pipe (4) is in a round pipe shape and is an anti-corrosion steel pipe;

the drainage connecting pipe (8) is a PVC drainage pipe or a PE pipe or an anticorrosive steel pipe;

the cable trench water outlet pipe (11) is in a circular pipe shape and is an anti-corrosion steel pipe.

4. The embankment-on-one engineering cable trench drainage structure according to claim 3, wherein: the energy dissipation drainage culvert (15) is of an integrated pouring structure made of reinforced concrete or steel fiber concrete.

5. The embankment-on-one engineering cable trench drainage structure according to claim 4, wherein: the drainage connecting pipe (8) is connected with the cable trench water outlet pipe (11) through a bent pipe (16) and is connected with the energy dissipation drainage culvert water inlet pipe (4) through the bent pipe (16);

and the water outlet pipe (11) of the cable trench is anchored at the lower end of the side of the water seepage well (12).

6. The embankment-on-one engineering cable trench drainage structure according to claim 5, wherein: a trash rack (19) is arranged at the opening end of the energy dissipation drainage culvert (15).

7. The method for draining water in an embankment-on-one engineering cable trench according to any one of claims 1 to 6, wherein: comprises the following steps of (a) carrying out,

the method comprises the following steps: the water flow enters the cable trench (13) through the sidewalk (14) and then flows into the seepage well (12);

step two: the water flow flowing into the seepage well (12) sequentially passes through a cable trench water outlet pipe (11), a drainage connecting pipe (8), an energy dissipation drainage culvert water inlet pipe (4), an energy dissipation pool (3), an energy dissipation sill (2) and a drainage outlet plate (1) and flows to an embankment prop platform (7);

step three: and repeating the first step to the second step until the drainage of the accumulated water in the cable trench is completed.

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