CN117536286A - Soil dredging equipment and dredging construction process between piles of high-pile wharf - Google Patents
Soil dredging equipment and dredging construction process between piles of high-pile wharf Download PDFInfo
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- CN117536286A CN117536286A CN202311566171.6A CN202311566171A CN117536286A CN 117536286 A CN117536286 A CN 117536286A CN 202311566171 A CN202311566171 A CN 202311566171A CN 117536286 A CN117536286 A CN 117536286A
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- pile
- dredging
- supporting bridge
- wharf
- hinge
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- 238000010276 construction Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002689 soil Substances 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000009412 basement excavation Methods 0.000 claims description 24
- 239000004575 stone Substances 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 2
- 239000010802 sludge Substances 0.000 description 20
- 238000010586 diagram Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/8833—Floating installations
- E02F3/885—Floating installations self propelled, e.g. ship
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/10—Pipelines for conveying excavated materials
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/06—Floating substructures as supports
- E02F9/062—Advancing equipment, e.g. spuds for floating dredgers
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a high-pile wharf inter-pile soil dredging device and a dredging construction process, wherein a dredging device is arranged at the front end of a ship body, the dredging device comprises a supporting bridge, the supporting bridge is rotationally connected with the ship body through a hinge mechanism, and the dredging device further comprises a supporting bridge lifting mechanism for driving the supporting bridge to lift; two sides of the end of the supporting bridge are symmetrically provided with 2 hinge wheels, a plurality of groups of hinge blades are arranged at equal intervals along the radial direction of the hinge wheels, and the supporting bridge further comprises a hinge wheel driving mechanism; the middle part of the supporting bridge is provided with a buoyancy tank, and two sides of the buoyancy tank are provided with limiting devices; the length of the supporting bridge frame is 15-30 m. The invention changes the construction sequence of the traditional high pile wharf in a breakthrough way, realizes piling and then dredging, and can finish the assembly on land mostly at present in the original working procedure of water surface construction, thereby greatly reducing the use of ships and greatly lowering the construction cost.
Description
Technical Field
The invention belongs to the technical field of dredging construction in narrow spaces, and particularly relates to a device and a process for dredging soil among piles of a high-pile wharf.
Background
High pile wharf is one of the important wharf structural forms. The basic composition of the pile foundation pile comprises an upper structure, a longitudinal beam, a pile foundation and a foundation, wherein the longitudinal beam connects the pile foundation into a whole, and the load from the upper part is transmitted to the foundation by the pile foundation through the longitudinal beam, and various wharf devices are arranged; the lower structure is mainly composed of pile foundations, supports the upper structure, transmits load acting on the upper structure to the foundation, plays a role in stabilizing the foundation, and is beneficial to stabilization of a bank slope.
The traditional soil dredging process between the piles of the high pile wharf comprises the following steps: firstly, dredging according to a designed section, then performing construction of a water pile foundation and pile top treatment, and finally performing construction of upper structures such as pile caps, cross beams, longitudinal beams, panel installation and the like on the pile top. The construction procedures are that the mud is firstly dug and then piled, and then the upper structure is installed and constructed, so that all the procedures are finished on water, and almost every procedure needs a ship, and the cost is huge.
In order to solve the problems in the prior art, we propose a device for dredging soil between piles of a high pile wharf and a dredging construction process.
Disclosure of Invention
The invention aims to provide a high pile wharf inter-pile soil dredging device special for narrow space dredging operation.
In order to achieve the above purpose, the present invention provides the following technical solutions: the device for dredging soil between piles of a high pile wharf comprises a ship body, wherein a dredging device is arranged at the front end of the ship body, the dredging device comprises a supporting bridge, the supporting bridge is rotationally connected with the ship body through a hinge mechanism, and the device further comprises a supporting bridge lifting mechanism for driving the supporting bridge to lift; two sides of the end of the supporting bridge are symmetrically provided with 2 hinge wheels, a plurality of groups of hinge blades are arranged at equal intervals along the radial direction of the hinge wheels, and the supporting bridge further comprises a hinge wheel driving mechanism; the middle part of the supporting bridge is provided with a buoyancy tank, and two sides of the buoyancy tank are provided with limiting devices; the length of the supporting bridge frame is 15-30 m.
Preferably, the inner cavity of the buoyancy tank is divided into four chambers, water injection holes are respectively formed in the top of each chamber, and water drainage holes are respectively formed in the bottom of each chamber.
Preferably, the limiting device comprises limiting pipes arranged on two sides of the buoyancy tank, and the limiting pipes are connected with the buoyancy tank through hydraulic buffer arms.
Preferably, the inner sides of the 2 hinge wheels are respectively provided with 2 corresponding suction pipes, the support bridge is provided with a sludge discharge pipe, one end of the sludge discharge pipe is communicated with the 2 suction pipes through a connecting box, the other end of the sludge discharge pipe penetrates through the ship body to extend to the stern, and a sludge pump is arranged on the sludge discharge pipe.
Preferably, a rotating shaft and an adjusting stop block with a hollow triangular prism structure are arranged in the connecting box, the rotating shaft is fixedly connected with the connecting box, and one edge of the adjusting stop block is fixedly connected with the rotating shaft; the adjusting stop block is driven to rotate through the hydraulic mechanism, and the adjusting stop block can be rotated to different directions to respectively block the corresponding outlets of the 2 mud suction pipes, so that only one mud suction pipe is kept smooth, and the working pressure in the pipe is ensured.
Preferably, an elliptic stone discharge outlet is formed in the mud discharge pipe extending to the hull, a stone collecting box is mounted at the lower end of the stone discharge outlet, and a side cover plate is arranged on the side wall of the stone collecting box.
Preferably, the supporting bridge lifting mechanism comprises a winch arranged on the ship body, an A-shaped frame is arranged between the winch and the supporting bridge, a steel wire rope is arranged on the winch, the outer end of the steel wire rope is fixedly connected with the supporting bridge, and the middle part of the steel wire rope is supported at the top end of the A-shaped frame; the winch drives the supporting bridge to freely rise and fall in the up-down direction by controlling the expansion and contraction of the steel wire rope.
Preferably, the stern of the ship body is provided with a main positioning pile and an auxiliary positioning pile, and both sides of the ship body are provided with cables.
The invention further aims to provide a soil dredging construction process between piles of the high-pile wharf.
In order to achieve the above purpose, the present invention provides the following technical solutions: the construction process of the soil dredging among the piles of the high pile wharf adopts the dredging equipment in the construction process, and specifically comprises the following steps:
1) Preparation before work: firstly, determining the specific position of an excavation area before construction, and preparing before construction;
2) The equipment is in place: the dredging equipment is positioned by mooring ropes and main positioning piles on two sides; the dredging device is perpendicular to the front edge of the wharf, the center of the dredging device is aligned to the centers of pile foundation bent frames and bent frames through adjustment of cables at two sides, and then a main positioning pile is arranged for device positioning; the hinge wheel is provided with a GPS to realize accurate positioning;
3) And (3) excavation of a close range in the front edge of the wharf: after the positioning of the dredger is finished, excavating in a range near the front edge of the wharf, and because the limiting device is still positioned outside the front edge of the wharf and cannot work, the adjustment of mooring ropes at two sides is adopted to excavate earthwork in a range near the front edge; the earth excavation is excavated to the designed bottom elevation layer by layer from top to bottom according to the section, the floating and sinking of the hinge wheel are realized by the supporting bridge lifting mechanism, the dead weight of the hinge wheel and the buoyancy of the buoyancy tank together, and the left and right swinging of the hinge wheel is realized by the adjustment of the mooring ropes at two sides;
4) Excavation of a long-distance range in the front edge of the wharf: after the front edge inner close range excavation is completed, the hinge wheel and the limiting device enter the dock front edge, the limiting device pushes the limiting pipe against pile foundations at two sides through the hydraulic arm to limit the dredging device, dredging is realized through left-right swing of the hinge wheel, and earth excavation is excavated layer by layer from top to bottom to the designed bottom elevation according to the section; the limiting device plays a role in buffering and protecting the contact object, and prevents the buoyancy tank from directly colliding with the contact object to generate accidents;
5) And excavating earthwork between the front pile foundation and the rear pile foundation: a part of earthwork is excavated by enabling the unilateral hinge wheel to enter between the front pile and the rear pile through swing and leaning movement of the ship body; similarly, when the next working face is constructed, the hinge wheel swings to dig out the residual earthwork between the same front pile and the same rear pile;
6) And (5) measuring and checking: after the construction is completed, under the condition that the navigation requirement of the ship is met at low tide level, the water weight is utilized to measure and check in time, and shallow construction is carried out on the area with the elevation which does not meet the design requirement.
Preferably, the specific method of the step 5) is as follows: when dredging the mud in the gap between the left pile foundation and the right pile foundation, the cable on the left side of the ship body is tightened, the front end of the dredge device swings leftwards, the hinge wheel on the left side swings leftwards, at the moment, the hydraulic mechanism drives the adjusting stop block to rotate rightwards, the mud suction pipe on the right side is plugged, at the moment, the mud suction pipe on the left side is communicated with the mud discharge pipe, and only the hinge wheel on the left side works with the mud suction pipe; similarly, when dredging the silt in the space between pile foundation around the right side, the hawser on hull right side tightens up, and the hinge wheel that is located the right side swings rightwards that the mud device front end is swung rightwards, and hydraulic mechanism drive adjusts the dog and rotates leftwards this moment, blocks up the suction tube on the left side, and suction tube and the mud pipe intercommunication on the right side this moment only hinge wheel and the suction tube work on the right side.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention changes the construction process sequence of the traditional high pile wharf in a breakthrough way, and realizes that the wharf is constructed by piling and then the dredging is carried out; except for dredging, the original working procedures which are needed to be constructed on water can be completed on land, so that the use of ships is greatly reduced, and the construction cost is greatly reduced;
(2) The special dredging equipment is selected, and the support bridge frame is in lengthened design, so that a hinge wheel arranged at the front end of the support bridge frame can extend into a pile foundation to carry out dredging operation; the double-hinge wheel structure is adopted, and sludge between pile foundation gaps at two sides can be cleaned respectively through the left-and-right swing of the double-hinge wheel structure;
(3) The double-hinge wheels are respectively provided with the corresponding mud suction pipes, but only one side of the mud suction pipe is communicated with the mud discharge pipe through the adjustment of the connecting box, so that the pressure in the mud discharge pipe is kept balanced and is not lost, and the design of the double-hinge wheels and the double-mud suction pipe does not influence the mud discharge effect.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a preferred embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the junction box of the present invention;
FIG. 4 is a schematic view of the structure of the lump-stone collecting box in the present invention;
FIG. 5 is a process flow diagram of the dredge operation of the present invention;
FIG. 6 is a schematic diagram of the process of excavating 6 meters of the wharf's front edge according to the present invention;
FIG. 7 is a schematic diagram of the excavation process within the range of 6-18 meters in the dock front;
in the figure: 1. a hull; 2. a hinge wheel; 2-1, a reamer blade; 3. a buoyancy tank; 4. a limiting tube; 5. a hydraulic buffer arm; 6. a support bridge; 7. a mud pump; 8. a main positioning pile; 9. auxiliary positioning piles; 10. a hinge mechanism; 11. a hoist; 12. a suction pipe; 13. adjusting the stop block; 14. a rotating shaft; 15. a connection box; 16. a mud pipe; 17. a stone discharge outlet; 18. a lump stone collecting box; 19. a side cover plate; 20. a cable; 21. pile foundation.
Detailed Description
A preferred embodiment of the present invention will be described with reference to the accompanying drawings, in which technical solutions of the preferred embodiment of the present invention are clearly and completely described.
Example 1:
the invention discloses a specially-modified double-hinge wheel type dredging device for excavating soil among piles, which is exemplified by construction requirements of a range of 18m which is required to be excavated longitudinally inwards from the front edge of a wharf, and comprises the following specific structures:
referring to fig. 1 and 2, the dredging apparatus includes a hull 1, and a dredging device is provided at a front end of the hull 1.
The dredger comprises a supporting bridge 6, the supporting bridge 6 is rotationally connected with the ship body 1 through a hinge mechanism 10, and the dredger further comprises a supporting bridge lifting mechanism for driving the supporting bridge 6 to lift, in the embodiment, the supporting bridge lifting mechanism comprises a winch arranged on the ship body, an A-shaped frame is arranged between the winch and the supporting bridge, a steel wire rope is arranged on the winch, the outer end of the steel wire rope is fixedly connected with the supporting bridge, and the middle part of the steel wire rope is supported at the top end of the A-shaped frame; the winch drives the supporting bridge to rise and fall freely in the up-down direction by controlling the expansion and contraction of the steel wire rope, so that the double-hinge wheel 2 at the front end is controlled to be in an optimal working angle range.
Two sides of the end head of the supporting bridge 6 are symmetrically provided with 2 hinge wheels 2, a plurality of groups of hinge blades 2-1 are arranged at equal intervals along the radial direction of the hinge wheels 2, and the supporting bridge further comprises a hinge wheel driving mechanism.
The tail of the ship body 1 is provided with a main positioning pile 8 and a secondary positioning pile 9, and both sides of the ship body are provided with cables 20. The main positioning piles 8 are used for positioning ships, the ropes 20 on two sides pull the ships to step forward along the center line of the digging groove by taking the main positioning piles 8 as the acting points, and the auxiliary positioning piles 9 are used for positioning the ships temporarily after the ships run for one working stroke, so as to assist the main positioning piles 8 to prepare for the next working stroke.
In order to realize the construction procedures of piling and then dredging, and to enable the hinge wheel 2 of the dredging device to extend into the gap between pile foundations for dredging, compared with the traditional dredging equipment, the support bridge 6 adopts an lengthening structure, the length of the support bridge 6 is 15-30 m, and the support bridge is adjusted according to the construction depth; because the dead weight of the lengthened support bridge 6 is overweight, the floating box 3 is arranged in the middle of the support bridge 6, the effect that the overall structure of the dredging device is slightly larger than the density of seawater is realized by injecting water into the floating box 3, the floating box 3 is used for providing buoyancy for the double-hinge-wheel dredging device and the limiting device, and the dead weight of the floating box 3 is regulated through the water injection hole and the water drainage hole, so that the sinking and floating of the hinge wheel 2 is regulated.
In this embodiment, the length of the supporting bridge 6 is designed to be 22 meters, so as to meet the requirement of the soil excavation range between piles of 18m, and the length of the supporting bridge 6 can be adjusted according to the construction conditions and the construction requirements in the actual construction process.
Limiting devices are further arranged on two sides of the floating box 3, the inner cavity of the floating box 3 is divided into four chambers, water injection holes are respectively formed in the top of each chamber, drain holes are respectively formed in the bottom of each chamber, and the height of the water surface of the inner pressure cabin of the floating box 3 can be adjusted through the water injection holes and the drain holes; the limiting device comprises limiting pipes 4 arranged on two sides of the buoyancy tank 3, the limiting pipes 4 are connected with the buoyancy tank 3 through hydraulic buffer arms 5, and the limiting pipes 4 are propped against to avoid collision with pile foundations on two sides. The limit pipe 4 is wrapped with a rubber layer to realize flexible buffering with the contact object and fully protect the contact object (not limited to the pile body) from being damaged.
In this embodiment, the length of the buoyancy tank 3 is 7 meters, the distance between the front end of the buoyancy tank 3 and the front end of the hinge wheel 2 is about 6 meters, and the parameters can be adjusted according to the construction conditions and the construction requirements in the actual construction process.
Referring to fig. 3, the inner sides of the 2 hinge wheels 2 are respectively provided with 2 corresponding suction pipes 12, the support bridge 6 is provided with a sludge discharge pipe 16, one end of the sludge discharge pipe 16 is communicated with the 2 suction pipes 12 through a connection box 15, the other end of the sludge discharge pipe 16 extends to the hull 1, and the sludge discharge pipe 16 is provided with a sludge pump 7. The river bottom sediment is loosened by rotating the hinged wheel 2, and meanwhile, the mud is pumped by the mud pump 7 and is pumped into a mud throwing area through the mud discharging pipe 16.
A rotating shaft 14 and an adjusting stop block 13 with a hollow triangular prism structure are arranged in the connecting box 15, the rotating shaft 14 is fixedly connected with the connecting box 15, and one edge of the adjusting stop block 13 is fixedly connected with the rotating shaft 14; the adjusting stop block 13 is driven to rotate through a hydraulic mechanism, and the adjusting stop block 13 rotates to different directions to respectively block the outlets of the 2 sludge suction pipes 12.
In the process of dredging operation, as the traditional high pile wharf dredging process is to dredge and then pile, the dredging process is free from the obstruction of pile foundations, the front end of the dredging device is designed by adopting a single reamer, and the dredging surface of the reamer is pushed forward in a fan shape. The procedure of piling and then dredging is adopted in the subversion of the application, the reamer can smoothly dredge mud in the advancing process, but a common reamer for mud positioned between the gaps of the front pile and the rear pile is difficult to dredge, so the application adopts a double-reamer design, when dredging mud in the gap of a left pile foundation, a cable 20 on the left side of a ship body 1 is tightened, the front end of a dredging device swings leftwards, a reamer 2 positioned on the left side swings leftwards, a hydraulic mechanism drives an adjusting stop block 13 to rotate rightwards at the moment, a mud suction pipe on the right side is blocked, at the moment, the mud suction pipe 12 on the left side is communicated with a mud discharge pipe 16, and only the reamer 2 on the left side works with the mud suction pipe 12; similarly, when dredging the sludge in the gap of the pile foundation on the right side, the cable 20 on the right side of the ship body 1 is tightened, the front end of the dredge swings rightwards, the hinge wheel 2 on the right side swings rightwards, the hydraulic mechanism drives the adjusting stop block 13 to rotate leftwards at the moment, the left suction pipe 12 is plugged, the right suction pipe 12 is communicated with the sludge discharge pipe 16 at the moment, and only the hinge wheel 2 on the right side and the suction pipe 12 work; the above structural design realizes that the double-hinged wheel 2 can respectively clear up the sludge between the pile foundation gaps at two sides through left and right swinging, and the pressure in the sludge discharge pipe 16 is kept balanced and not lost due to the fact that only the sludge suction pipe 12 at one side is communicated with the sludge discharge pipe 16 at the same time, and the sludge discharge effect is ensured.
Example 2:
the soil excavation between piles is within a range where partial block stones and concrete blocks are frequently present, the excavation difficulty is high, and the construction equipment is easily damaged, so that the construction work efficiency is reduced, and the block stone collecting device is arranged on the sludge discharge pipe 16.
Referring to fig. 4, an oval stone discharge port 17 is formed on a mud discharge pipe 16 extending to the hull 1, a stone collecting box 18 is mounted at the lower end of the stone discharge port 17, and a side cover plate 19 is disposed on the side wall of the stone collecting box 18; when the mud-water mixture mixed with the lump stone and the concrete block passes through the lump stone discharging port 17, the lump stone and the concrete block fall into the lump stone collecting tank 17 from the lump stone discharging port 17 due to the heavy dead weight to be separated from the mud-water mixture, and the side cover plate 19 can be opened to empty after the lump stone collecting tank 17 is fully collected.
Referring to fig. 5, the construction process of the inter-pile soil dredging of the high pile wharf according to the present invention needs to select the above-mentioned special dredging equipment, and the construction process specifically includes the following steps:
1) Preparation before work: firstly, determining the specific position of an excavation area before construction, and preparing before construction;
2) The equipment is in place: the dredging device is positioned by anchoring mooring ropes and main positioning piles 8 through mooring ropes 29 at two sides; the dredging device is perpendicular to the wharf front edge, and the length and angle of the cable 29 are determined according to the test running data of the device; aligning the center of the dredging device with the center of the pile foundation bent and the bent through the adjustment of the cables 29 at the two sides, and then positioning the device by the lower main positioning pile 8; the hinge wheel 2 is provided with a GPS to realize accurate positioning;
3) Excavation within a range of 6 meters in the front edge of the wharf: referring to fig. 6, after the positioning of the dredging device is completed, the soil excavation between piles is started, and the limiting device is still positioned outside the front edge of the wharf and cannot work, so that the soil excavation within the range of 6 meters in the front edge is performed by adopting the adjustment of the mooring ropes at two sides; the earth excavation is divided into three layers from top to bottom to design bottom elevation according to the section, the floating and sinking of the hinge wheel 2 are realized by the supporting bridge lifting mechanism, the dead weight of the hinge wheel 2 and the buoyancy of the buoyancy tank 3, and the left and right swinging of the hinge wheel 2 is realized by the adjustment of mooring ropes at two sides;
4) Excavation within the range of 6-18 meters in the front edge of the wharf: referring to fig. 7, after the front edge 6 m range excavation is completed, the mooring ropes at the two sides of the ship body 1 are released, the hinge wheel 2 and the limiting device enter the front edge of the wharf, the limiting device pushes the limiting pipe 4 against pile foundations at the two sides through the hydraulic arm 5 to limit the dredging device, dredging is realized through the left-right swing of the hinge wheel 2, and earth excavation is divided into three layers according to sections from top to bottom to the designed bottom elevation;
5) And excavating earthwork between the front pile foundation and the rear pile foundation: the hinge wheel 2 enters between the front pile and the rear pile to excavate a part of earth through swing and leaning movement of the ship body; similarly, when the next working face is constructed, the hinge wheel 2 swings to the position between the same front pile and the same rear pile, so that the residual earthwork can be excavated;
6) And (5) measuring and checking: after the construction is completed, under the condition that the navigation requirement of the ship is met at low tide level, measurement and acceptance are timely carried out, and shallow construction is carried out on the area with the elevation which does not meet the design requirement.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a soil dredging equipment between high pile wharf stake, includes hull (1), and hull (1) front end is provided with dredger, its characterized in that: the dredger comprises a supporting bridge frame (6), wherein the supporting bridge frame (6) is rotationally connected with the ship body (1) through a hinge mechanism (10), and the dredger further comprises a supporting bridge frame lifting mechanism for driving the supporting bridge frame (6) to lift;
two sides of the end of the supporting bridge (6) are symmetrically provided with 2 hinge wheels (2), a plurality of groups of hinge blades (2-1) are arranged at equal intervals along the radial direction of the hinge wheels (2), and the supporting bridge further comprises a hinge wheel driving mechanism;
the middle part of the supporting bridge frame (6) is provided with a buoyancy tank (3), and two sides of the buoyancy tank (3) are provided with limiting devices;
the length of the supporting bridge frame (6) is 15-30 m.
2. The high pile wharf inter-pile soil dredging apparatus as claimed in claim 1, wherein: the inner cavity of the buoyancy tank (3) is divided into four chambers, the top of each chamber is respectively provided with a water injection hole, and the bottom of each chamber is respectively provided with a water drainage hole.
3. The high pile wharf inter-pile soil dredging apparatus as claimed in claim 1, wherein: the limiting device comprises limiting pipes (4) arranged on two sides of the buoyancy tank (3), and the limiting pipes (4) are connected with the buoyancy tank (3) through hydraulic buffer arms (5).
4. The high pile wharf inter-pile soil dredging apparatus as claimed in claim 1, wherein: the inside of 2 hinge wheels (2) is provided with 2 corresponding suction pipes (12) respectively, be provided with mud pipe (16) on supporting bridge frame (6), the one end of mud pipe (16) pass through junction box (15) with 2 suction pipes (12) intercommunication, the other end of mud pipe (16) passes hull (1) extends to stern, installs dredge pump (7) on the mud pipe (16).
5. The high pile wharf inter-pile soil dredging apparatus as claimed in claim 4, wherein: a rotating shaft (14) and an adjusting stop block (13) with a hollow triangular prism structure are arranged in the connecting box (15), the rotating shaft (14) is fixedly connected with the connecting box (15), and one edge of the adjusting stop block (13) is fixedly connected with the rotating shaft (14); the adjusting stop block (13) is driven to rotate through the hydraulic mechanism, the adjusting stop block (13) rotates to different directions to respectively block the corresponding outlets of the 2 suction pipes (12), so that only one suction pipe (12) is kept smooth, and the working pressure in the pipe is ensured.
6. The high pile wharf inter-pile soil dredging apparatus as claimed in claim 1, wherein: an elliptic stone discharge outlet (17) is formed in a mud discharge pipe (16) extending to the ship body (1), a stone collecting box (18) is arranged at the lower end of the stone discharge outlet (17), and a side cover plate (19) is arranged on the side wall of the stone collecting box (18).
7. The high pile wharf inter-pile soil dredging apparatus as claimed in claim 1, wherein: the supporting bridge lifting mechanism comprises a winch arranged on the ship body (1), an A-shaped frame (11) is arranged between the winch and the supporting bridge (6), a steel wire rope is arranged on the winch, the outer end of the steel wire rope is fixedly connected with the supporting bridge (6), and the middle part of the steel wire rope is supported at the top end of the A-shaped frame (11); the winch drives the supporting bridge (6) to rise and fall freely in the up-down direction by controlling the expansion and contraction of the steel wire rope.
8. The high pile wharf inter-pile soil dredging apparatus as claimed in claim 1, wherein: the stern of the ship body (1) is provided with a main positioning pile (8) and an auxiliary positioning pile (9), and two sides of the ship body are provided with cables (20).
9. A high pile wharf inter-pile soil dredging construction process is characterized in that: the dredging device as claimed in any one of claims 1-8 is used in the construction process, which comprises the following steps:
1) Preparation before work: firstly, determining the specific position of an excavation area before construction, and preparing before construction;
2) The equipment is in place: the dredging equipment is positioned by anchoring mooring ropes and main positioning piles (8) through mooring ropes (20) at two sides; the dredging device is vertical to the front edge of the wharf, the center of the dredging device is aligned to the center of a pile foundation bent and the bent through adjustment of cables (20) at two sides, and then a main positioning pile (8) is arranged for device positioning; the hinge wheel (2) is provided with a GPS to realize accurate positioning;
3) And (3) excavation of a close range in the front edge of the wharf: after the positioning of the dredger is finished, excavating in a range near the front edge of the wharf, and because the limiting device is still positioned outside the front edge of the wharf and cannot work, the adjustment of mooring ropes at two sides is adopted to excavate earthwork in a range near the front edge; the earth excavation is excavated to the designed bottom elevation layer by layer from top to bottom according to the section, the floating and sinking of the hinge wheel (2) are realized by the supporting bridge lifting mechanism, the dead weight of the hinge wheel (2) and the buoyancy of the buoyancy tank (3), and the left and right swinging of the hinge wheel (2) is realized by the adjustment of the mooring ropes at two sides;
4) Excavation of a long-distance range in the front edge of the wharf: after the front edge inner close range excavation is completed, the hinge wheel (2) and the limiting device enter the dock front edge, the limiting device pushes the limiting pipe (4) against pile foundations at two sides through the hydraulic arm (5) to limit the dredging device, dredging is realized through the left-right swing of the hinge wheel (2), and earth excavation is excavated layer by layer from top to bottom to the designed bottom elevation according to the section; the limiting device plays a role in buffering and protecting the contact object, and prevents the buoyancy tank (3) from directly colliding with the contact object to cause accidents;
5) And excavating earthwork between the front pile foundation and the rear pile foundation: a unilateral hinge wheel (2) enters between the front pile and the rear pile to excavate a part of earthwork through swinging and leaning movement of the ship body; similarly, when the next working surface is constructed, the hinge wheel (2) swings to the position between the front pile and the rear pile to excavate the residual earthwork;
6) And (5) measuring and checking: after the construction is completed, under the condition that the navigation requirement of the ship is met at low tide level, the water weight is utilized to measure and check in time, and shallow construction is carried out on the area with the elevation which does not meet the design requirement.
10. The high pile wharf inter-pile soil dredging construction process according to claim 9, wherein: the specific method of the step 5) is as follows: when dredging the mud in the gap between the left pile foundation and the right pile foundation, the cable (20) on the left side of the ship body (1) is tightened, the front end of the dredge device swings leftwards, the hinge wheel (2) on the left side swings leftwards, at the moment, the hydraulic mechanism drives the adjusting stop block (13) to rotate rightwards to block the mud suction pipe (12) on the right side, at the moment, the mud suction pipe (12) on the left side is communicated with the mud discharge pipe (16), and only the hinge wheel 2 on the left side and the mud suction pipe 12 work; similarly, when dredging the silt in the space between pile foundation around the right side, hawser (20) on hull (1) right side tighten up, and dredge device front end swings rightwards, and hinge wheel (2) that are located the right side swings rightwards, and hydraulic mechanism drive adjusts dog (13) left rotation this moment, blocks left suction pipe (12), suction pipe (12) and the mud pipe (16) intercommunication on the right side this moment, only hinge wheel (2) and suction pipe (12) work on the right side.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119195260A (en) * | 2024-11-27 | 2024-12-27 | 中交第一航务工程局有限公司 | Cutter suction system for excavation between dock piles and sand suction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119195260A (en) * | 2024-11-27 | 2024-12-27 | 中交第一航务工程局有限公司 | Cutter suction system for excavation between dock piles and sand suction method thereof |
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