CN220378337U - Water diversion device for primary support water leakage at bottom of tunnel lower step arch - Google Patents
Water diversion device for primary support water leakage at bottom of tunnel lower step arch Download PDFInfo
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- CN220378337U CN220378337U CN202322110345.XU CN202322110345U CN220378337U CN 220378337 U CN220378337 U CN 220378337U CN 202322110345 U CN202322110345 U CN 202322110345U CN 220378337 U CN220378337 U CN 220378337U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 217
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- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 claims description 5
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000002829 reductive effect Effects 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000005422 blasting Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
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- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model relates to a diversion device for primary support water leakage of a tunnel lower step arch bottom, which comprises: diversion pipe, lag and mounting, wherein: the water diversion pipe is provided with a first end and a second end along the axial direction, the second end is radially and outwards provided with a plurality of water diversion base bands, and the plurality of water diversion base bands are arranged at the water leakage position of the tunnel lower step arch bottom bedrock and cover the water leakage point when the drainage of the tunnel lower step arch bottom primary support water leakage is carried out, so that the water leakage is led to the water diversion pipe; the protective sleeve is sleeved on the pipe wall of the water diversion pipe and used for protecting the water diversion pipe; the fixing piece is supported on the periphery of the protective sleeve or the water diversion pipe and used for fixing the position of the water diversion pipe. The water diversion device provided by the utility model mainly aims at the problem of single-point water leakage at the arch bottom, adopts the water blocking and draining measures, optimizes the original single-point water leakage and draining mode at the arch bottom, strengthens the water diversion effect, and saves the construction cost.
Description
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to a water diversion device for preventing and controlling water leakage of primary support at the bottom of a tunnel lower step arch.
Background
The tunnel construction process of mountain drilling and blasting method usually encounters the problem of single-point water leakage, the whole surrounding rock is basically free from water leakage, only partial water leakage points exist, and the problem of water diversion of local water leakage at the arch bottom in the lower step construction process is the problem of difficulty in tunnel construction.
In the prior art, blind pipe engineering is generally adopted, the blind pipe construction process firstly needs to drill holes for positioning, then anchor bolts are installed and the blind pipes are bundled in sequence, and finally the blind pipes are longitudinally and annularly connected. The circumferential blind ditch of the tunnel generally adopts a 50-hole corrugated pipe, the materials, the performances, the holes and the like of the corrugated pipe meet the requirements of the 4 th part drainage blind pipe and inspection well (Q/CR 562.4-2018) of the railway tunnel waterproof and drainage material, and the pipe body is wrapped with geotextile. The outer-wrapped geotextile is suitable for being manufactured into a coat, and a permeable waistband or a hemp rope is additionally arranged, so that the outer-wrapped geotextile is tightly and firmly attached to the pipe wall; the water permeable cloth belt or hemp rope is firmly bound during manual production, and the distance is not more than 20cm.
The blind pipe has large engineering quantity, and especially when aiming at a concentrated water leakage point, the blind pipe cannot carry out targeted water transportation and drainage aiming at the water leakage point, so that the construction cost is increased while the drainage effect is poor.
Meanwhile, in the prior art, aiming at the problem of single water leakage point of the arch bottom bedrock, no effective water blocking, water conveying and draining measures are adopted, so that the primary support construction effect is influenced, and the strength of the support structure is also greatly influenced.
Disclosure of Invention
In view of the defects of the prior art, the main purpose of the utility model is to provide a diversion device for primary support water leakage at the bottom of a tunnel lower step arch, so as to solve the problem that the existing pre-buried blind pipe diversion has poor effect on solving the problem of single-point water leakage.
The technical scheme of the utility model is as follows:
the utility model provides a diversion device for primary support water leakage of a tunnel lower step arch bottom, which comprises: a water conduit, a protective sleeve and a fixing part, wherein
The water diversion pipe is provided with a first end and a second end along the axial direction, the second end is radially outwards provided with a plurality of water diversion base bands, and the plurality of water diversion base bands are arranged at the water leakage position of the tunnel lower step arch bottom bedrock and cover the water leakage point when the drainage of the tunnel lower step arch bottom primary support water leakage is carried out, so that the water leakage is led to the water diversion pipe;
the protective sleeve is sleeved on the pipe wall of the water diversion pipe and is used for protecting the water diversion pipe;
the fixing piece is supported on the periphery of the protective sleeve or the water diversion pipe and used for fixing the position of the water diversion pipe.
Preferably, the diameter of the water diversion pipe is 50mm, and the length of the water diversion pipe is 200mm.
Preferably, the water diversion pipe is a PE corrugated pipe.
Preferably, the water diversion base band is divided into four petals at the second end of the water diversion pipe in a flowering mode.
Preferably, each water diversion base band is a PE corrugated pipe with the circumference of 1/4.
Preferably, the protective sleeve is a flexible protective sleeve.
Preferably, the flexible protective sleeve is formed by winding geotextile along the wall of the water diversion pipe.
Preferably, the fixing piece is a binding iron wire, and is wound around the periphery of the protective sleeve or the water conduit.
Preferably, the water diversion base band is provided with one or more positioning pieces for positioning the water diversion base band and clinging to the surface of the primary support structure of the tunnel lower step arch bottom.
Preferably, the positioning piece is made of epoxy resin and is arranged on the inner surface of the water diversion base band, and the water diversion base band is adhered to the surface of the primary support structure of the tunnel lower step arch bottom.
Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a water diversion device for primary support water leakage at the bottom of a tunnel lower step arch, which is used for carrying out targeted water transportation and drainage on the water leakage at a single water leakage point of a foundation rock at the bottom of the tunnel by arranging a single-point water diversion pipe, and has a remarkable water diversion effect.
According to the utility model, the plurality of water diversion base bands arranged at the bottom of the water diversion pipe are tightly attached to the arch base rocks of the lower step of the tunnel, so that an effective closed drainage channel is formed, smooth construction of the structure is ensured, and the influence of water leakage on the strength of the primary support structure is reduced.
The protective sleeve is arranged along the pipe wall of the water conduit, so that the deformation of the water conduit caused by the injection pressure in the process of injecting the primary support concrete can be prevented, the penetration of a water leakage channel is ensured, and the blockage of the conduit caused by the deformation of the water conduit in the process of applying the primary support structure is prevented.
The fixing piece is supported on the periphery of the water diversion pipe or the protective sleeve, so that the rigidity of the pipe wall of the water diversion pipe can be increased, the damage to the water diversion pipe in the primary support structure construction process is prevented, the primary support construction effect is influenced, meanwhile, the trend and the height of the water diversion pipe can be fixed, the stability of the water diversion pipe is increased, the disorder of the water diversion pipe is prevented from deviating from the position of a water leakage point, and the drainage effect is influenced.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, but rather by the claims.
FIG. 1 is a schematic view of the overall construction of a water diversion device according to some embodiments of the present utility model;
FIG. 2 is a schematic view of a water conduit structure according to some embodiments of the present utility model;
fig. 3 is a view showing a state of use of the water diversion device according to some embodiments of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the embodiments and the accompanying drawings. The exemplary embodiments of the present utility model and their descriptions herein are for the purpose of explaining the present utility model, but are not to be construed as limiting the utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be understood that the terms "comprises/comprising," "consists of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method as desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," and the like, does not exclude the presence of other like elements in a product, apparatus, process, or method that includes the element.
It is further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate describing the present utility model and to simplify the description, and do not indicate or imply that the devices, components, or structures referred to must have a particular orientation, be configured or operated in a particular orientation, and are not to be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The tunnel lower step and the inverted arch are excavated by adopting a drilling and blasting method, and the inverted arch excavates a front frame pipe to drain water into a drainage ditch; after excavation is completed, the construction of installing arches is carried out according to surrounding rock grade division, so that the arches are formed into rings for concrete spraying; after the primary support is completed, paving a waterproof plate and a longitudinal annular blind pipe; and a water diversion device is additionally arranged in combination with the actual situation of the site.
The support forms are primary support, waterproof and secondary lining, the primary support generally does not have waterproof performance in order to consider the construction cost of the tunnel, the tunnel is easy to have local water leakage in the arch bottom in the construction process of the lower step, the field inverted arch embedded blind pipe is suitable for karst water extremely developed areas, and the inverted arch water gushing points cannot be effectively discharged to a ditch through the embedded blind pipe.
Therefore, the utility model provides the water diversion device for the primary support water leakage at the bottom of the tunnel lower step arch, which is used as a single-point water diversion pipe to drain the water at the leakage point to the drainage ditch, so that the single-point water burst problem in the mountain drilling and blasting tunnel construction process can be effectively solved.
The implementation of the present utility model will be described in detail with reference to the preferred embodiments.
As shown in fig. 1, the present utility model proposes a water diversion device for primary support water leakage at the bottom of a tunnel lower step arch, comprising: the water diversion pipe 1, the protective sleeve 2 and the fixing piece 3.
According to the water diversion device, the single-point water diversion pipe 1 is arranged in the inverted arch primary support process to conduct targeted water transportation and drainage on the single-leakage water point of the lower arch base rock in the mountain tunnel lower step excavation process, so that the water transportation and drainage quality of the single-leakage water point of the arch base rock is improved, and the influence of the leakage water on the primary support structure strength is reduced.
Specifically, as shown in fig. 2, the penstock 1 has a first end and a second end in the axial direction, and the second end is radially outwardly radiated (or diverged) provided with a plurality of penstocks 101, and the plurality of penstocks 101 are disposed at the water leakage position of the tunnel lower step arch base rock and cover the water leakage point when drainage of the tunnel lower step arch base primary support water leakage is performed, so that the water leakage is guided to the penstock 1.
The first end in this embodiment may be, for example, the upper end of the penstock 1 and the second end may be, for example, the lower end of the penstock 1.
The water diversion base bands 101 arranged at the second ends of the water diversion pipes are tightly attached to the arch base rocks of the lower steps of the tunnel, the water diversion area can be increased, an effective closed drainage channel is formed between the water diversion pipes 1 and the water diversion base bands 101 and between the water diversion base bands 101 and the bedrock, the second ends of the water diversion pipes 1 are plugged by the water diversion base bands 101, water leakage at water leakage points can be prevented from flowing out of the pipe wall of the second ends of the water diversion pipes, the water leakage is guaranteed to be completely led into the water diversion pipes 1, smooth construction is guaranteed, and the influence of the water leakage exposure on the primary support structural strength is reduced.
In some embodiments, the water conduit 1 is a PE corrugated pipe, the outer wall of the PE corrugated pipe is corrugated, the pressure resistance of the pipeline is improved, the inner wall is smooth and does not scale, the impact force of the water leakage on the inner wall of the water conduit is reduced, the friction coefficient is reduced, and the water conduit is more rapid to apply.
In some embodiments, the diameter of the penstock 1 is no less than the pore size of the water leakage point, ensuring that it can completely cover the single water leakage point of the underarch rock, preferably 50mm.
The length of the water conduit 1 is designed according to the inverted arch pouring thickness, so that the water leakage led out by the water conduit 1 can be finally led to a drainage ditch. The present utility model is preferably 200mm.
In the present utility model, the water diversion base band 101 may be detachably connected to the second end of the water diversion pipe 1, or may be integrally formed with the water diversion pipe 1. The specific connection form is not limited by the present utility model.
In some embodiments, the water diversion base band 101 is divided into four petals by flowering at the second end of the water diversion pipe 1, and it is easy to understand that the flowering mode can be a flower-like shape formed by cutting a certain length at four positions along the pipe wall of the second end of the water diversion pipe 1 and bending 90 degrees, and other flowering modes can be adopted, so that the utility model is not limited in particular herein.
Further, the water diversion base band 101 is preferably a PE corrugated pipe of 1/4 of the length. Each flap is designed into the same size, so that the cutting and the manufacturing are convenient, the time is saved, and the construction cost is saved.
In some embodiments, the water diversion base band 101 may further be provided with one or more positioning pieces for positioning and tightly attaching the water diversion base band 101 to the surface of the primary support structure of the arch bottom of the lower step of the tunnel.
Preferably, the positioning member may be an adhesive made of epoxy resin and disposed on the inner surface of the diversion base band 101, so as to fix the diversion base band 101 to the surface of the tunnel bottom step arch bottom primary support structure or the arch bottom bedrock when conducting drainage of the tunnel bottom step arch bottom primary support water leakage.
The positioning member may be one or more positioning nails arranged on the water diversion base band 101, when the second end of the water diversion pipe 1 is arranged at the water leakage position of the tunnel lower step arch base rock and covers the water leakage point, the surface of the primary support structure of the water diversion base band 101 corresponding to the tunnel lower step arch base is paved along the direction away from the water diversion pipe 1, and the positioning nails are knocked into the corresponding tunnel lower step arch base rock by a knocking hammer or other knocking members, so that the water diversion base band 101 is fixed.
Of course, the positioning member may have other structures capable of positioning the water diversion base tape 101.
The protective sleeve 2 is sleeved on the pipe wall of the water diversion pipe 1.
The protective sleeve 2 mainly plays a role in protecting the wall of the water conduit, and the protective sleeve 2 is arranged along the outer pipe wall of the water conduit 1, so that the deformation of the water conduit 1 caused by the injection pressure in the process of injecting the primary support concrete can be prevented, the penetration of a water leakage channel is ensured, and the blocking of the water conduit caused by the deformation of the water conduit 1 in the process of applying the primary support structure is prevented.
In some embodiments, the protective sleeve 2 is a flexible protective sleeve, and the flexible protective sleeve has high toughness, can be clung to the outer pipe wall of the water conduit 1, has the same movement trend as the water conduit 1, and plays a good role in protecting the protective sleeve 2.
Preferably, the flexible protective sheath is made of geotextile wrapped around the wall of the penstock 1.
The geotextile is made of water-permeable geotextile composite material formed by needling or braiding synthetic fibers. Has the advantages of light weight, low cost, corrosion resistance, reverse filtration, drainage, isolation, reinforcement and the like.
The fixing piece 3 can be supported on the periphery of the protective sleeve 2, and the fixing piece 3 can also be supported on the outer wall of the water conduit 1.
The fixing piece 3 is mainly used for increasing the rigidity of the water conduit pipe wall, preventing the water conduit pipe wall from being damaged in the primary support structure construction process, influencing the primary support construction effect, and simultaneously fixing the position of the water conduit 1 placed at the leakage point, preventing the water conduit pipe 1 from being disturbed and deviated from the leakage point position, and influencing the drainage effect.
In some embodiments, the securing member 3 is a lashing wire or lashing bar, wrapped around the outer wall of the penstock 1 or wrapped around the outer circumference of the protective jacket 2.
The binding iron wires or the reinforcing steel bars can be adapted to the water diversion pipes 1 with different shapes and sizes, and are wound and fixed along the outer walls of the different water diversion pipes 1, and the protecting sleeve 2 can be fixed by the binding iron wires or the reinforcing steel bars, so that the water diversion pipes are not easy to fall off; if the water conduit 1 is deformed by concrete vibration, the binding iron wires or the reinforcing steel bars can be bound with the primary support reinforcing steel bars around the water conduit 1 shown in fig. 2, so that the fixing effect is achieved.
Referring to fig. 3, in use, the second end of the water conduit is placed at the water leakage position of the arch bottom foundation rock of the lower step of the tunnel and covers the water leakage point, the water conduit base belt is clung to the surface of the arch bottom primary support structure of the lower step of the tunnel to form a closed drainage channel, the water conduit is protected in the process of injecting primary support concrete through a protective sleeve, the water conduit is fixed at the water leakage position through a fixing piece, and the primary support water leakage is conveyed and discharged to a drainage groove through the first end of the water conduit connected to a drainage blind pipe.
The diversion device for the primary support water leakage of the tunnel lower step arch bottom can conduct targeted water shutoff and drainage on the water leakage of the single water leakage point of the arch bottom bedrock, and the diversion effect is remarkably improved.
The diversion device provided by the utility model has a simple structure and is convenient to operate, and great convenience is provided for single-point water leakage transportation and drainage of the lower arch bottom in the mountain tunnel lower step excavation process.
It is easy to understand by those skilled in the art that the above preferred embodiments can be freely combined and overlapped without conflict.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.
Claims (10)
1. A water diversion device for primary support water leakage at the bottom of a tunnel lower step arch, which is characterized by comprising: a water conduit, a protective sleeve and a fixing part, wherein
The water diversion pipe is provided with a first end and a second end along the axial direction, the second end is radially outwards provided with a plurality of water diversion base bands, and the plurality of water diversion base bands are arranged at the water leakage position of the tunnel lower step arch bottom bedrock and cover the water leakage point when the drainage of the tunnel lower step arch bottom primary support water leakage is carried out, so that the water leakage is led to the water diversion pipe;
the protective sleeve is sleeved on the pipe wall of the water diversion pipe and is used for protecting the water diversion pipe;
the fixing piece is supported on the periphery of the protective sleeve or the water diversion pipe and used for fixing the position of the water diversion pipe.
2. A water diversion device as claimed in claim 1, wherein the water diversion pipe has a diameter of 50mm and a length of 200mm.
3. A water diversion device as defined in claim 1, wherein the water diversion pipe is a PE corrugated pipe.
4. A water diversion device as claimed in claim 3 wherein the diversion base band is divided into four lobes by flowering at the second end of the diversion base band.
5. A water diversion device as set forth in claim 4 wherein each of the diversion base bands is a 1/4 circumference PE bellows.
6. A water diversion device as defined in claim 1, wherein the protective sheath is a flexible protective sheath.
7. A water diversion device as defined in claim 6, wherein the flexible protective sheath is formed by wrapping geotextile along a wall of the water conduit.
8. A water diversion device as claimed in claim 1, wherein the fixing member is a lashing wire wound around the periphery of the protective sheath or the water conduit.
9. The water diversion device as claimed in claim 1, wherein the water diversion base band is provided with one or more positioning pieces for positioning and clinging to the surface of the primary support structure of the tunnel lower step arch bottom.
10. The water diversion device as set forth in claim 9, wherein the positioning member is made of epoxy resin and is provided on an inner surface of the water diversion base tape, and the water diversion base tape is adhered to a surface of the primary support structure of the tunnel lower step arch bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322110345.XU CN220378337U (en) | 2023-08-07 | 2023-08-07 | Water diversion device for primary support water leakage at bottom of tunnel lower step arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322110345.XU CN220378337U (en) | 2023-08-07 | 2023-08-07 | Water diversion device for primary support water leakage at bottom of tunnel lower step arch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220378337U true CN220378337U (en) | 2024-01-23 |
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ID=89564108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322110345.XU Active CN220378337U (en) | 2023-08-07 | 2023-08-07 | Water diversion device for primary support water leakage at bottom of tunnel lower step arch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220378337U (en) |
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2023
- 2023-08-07 CN CN202322110345.XU patent/CN220378337U/en active Active
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