Multifunctional waterproof lining structure for underground excavation of subway
By combining support plates, anchor bolts, and waterproofing sheets, the waterproofing and stability issues of traditional lining structures under complex geological conditions are solved, enabling effective diversion and discharge of groundwater and ensuring construction safety and efficiency.
Patent Information
- Application Number
- CN202520053202.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Traditional lining structures suffer from poor waterproofing performance, difficulty in groundwater treatment, and insufficient structural stability under complex geological conditions, which affects construction safety and progress.
The structure employs a multi-functional waterproof lining, comprising support plates, anchor bolts, and waterproof plates. The support plates are connected by a snap-fit mechanism, the anchor bolts have a drainage mechanism inside, a water passage gap is provided between the waterproof plates and the support plates, a fixing mechanism is provided between the anchor bolts and the support plates, and a water outlet and drainage mechanism are provided.
It enhances the stability and waterproof performance of the lining structure, effectively reduces groundwater leakage, provides a channel for groundwater diversion and discharge, and ensures a dry and safe construction environment.
Smart Images
Figure CN223608559U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to building waterproof technical field especially relates to a subway open cut is with multi -functional waterproof lining structure. BACKGROUND
[0002] The foundation pit of the subway station is a large space excavated underground for the construction of the subway station. During the construction of the subway station, it is crucial to build a lining structure. This is because the foundation pit of the subway station is usually located deep underground, and the stability and bearing capacity of the surrounding rock-soil mass have a decisive influence on the safety of construction and the normal use of the subsequent station. The lining structure can provide support and protection to prevent the collapse and deformation of the rock-soil mass, while blocking the infiltration of groundwater, ensuring the safety and dryness of the construction environment, and laying a solid foundation for the subsequent construction of the station.
[0003] Traditional lining structures have many shortcomings in certain environments. In special environments such as complex geological conditions, abundant groundwater with high water pressure, and poor stability of rock-soil mass, for example, in areas with high-permeability sandy soil layers, broken rock layers, or underground rivers, firstly, in terms of waterproof performance, traditional structures often fail to effectively prevent the infiltration of groundwater, leading to leakage, affecting construction progress and quality. Secondly, there is a lack of effective drainage and collection mechanisms for groundwater, resulting in the accumulation of groundwater in the construction area, increasing the difficulty and risk of construction. In addition, the connection method of the components of the traditional lining structure may not be stable enough, and under the influence of complex geological conditions and construction vibration, the connection parts may loosen and be damaged, affecting the stability and safety of the overall structure. SUMMARY
[0004] The utility model aims at providing a multi-functional waterproof lining structure for subway open cut, to solve the problems of poor waterproof performance of traditional lining structures, difficult groundwater treatment, and insufficient structural stability in water-permeable environments during subway open cut construction.
[0005] The utility model realizes the following technical scheme:
[0006] A multi-functional waterproof lining structure for subway open cut, comprising a plurality of support pieces arranged along the inner wall of the foundation pit, a clamping mechanism for connecting adjacent support pieces is provided between adjacent support pieces, an anchor rod penetrating through the support piece and inserted into the soil layer is provided on each support piece, and a drainage mechanism for draining groundwater is provided on the anchor rod; a plurality of waterproof pieces are provided on one side of the inner wall of the plurality of support pieces, a water gap is left between the waterproof pieces and the support pieces, and a connecting mechanism connecting the waterproof pieces and the support pieces is provided between the waterproof pieces and the support pieces.
[0007] As a preferred embodiment, the clamping mechanism comprises a protrusion on each of the supporting pieces and a groove matching the protrusion.
[0008] As a preferred embodiment, the anchor rod is internally provided with a chamber, the end of the anchor rod close to the inner wall of the supporting piece is provided with an opening communicating with the chamber, the drainage mechanism comprises a plurality of openings on the anchor rod, each of the openings communicates with the chamber; the anchor rod and the supporting piece are further provided with a fixing mechanism for fixing the position of the anchor rod.
[0009] As a preferred embodiment, the fixing mechanism comprises a first nut and a threaded segment on the anchor rod matching the first nut, the first nut and the threaded segment are connected to fix the anchor rod on the inner wall of the supporting piece.
[0010] As a preferred embodiment, the end of the anchor rod inserted into the soil layer is provided with a rod head, the cross section of the rod head gradually shrinks in the direction from the threaded segment of the anchor rod to the opening.
[0011] As a preferred embodiment, each of the waterproof pieces is provided with a hole, the waterproof piece is further provided with a screw rod and a second nut matching the screw rod, the screw rod is inserted into the supporting piece after passing through the hole.
[0012] As a preferred embodiment, the waterproof piece contacting the ground of the foundation pit is provided with a water outlet, the foundation pit is further provided with a drainage mechanism communicating with the water outlet.
[0013] As a preferred embodiment, the drainage mechanism comprises a water channel and a collecting tank communicating with the water channel, the collecting tank is connected to the water outlet through the water channel.
[0014] As a preferred embodiment, the anchor rod and the screw rod are both perpendicular to the tangent of the curved surface of the inner wall of the foundation pit.
[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects: the utility model discloses a kind of subway excavation multifunctional waterproof lining structure in actual subway excavation construction scene, adjacent support piece is connected by clamping mechanism, the stability of overall structure is enhanced, can better cope with complex geological conditions.Drainage mechanism on anchor rod can effectively introduce underground water in soil layer into anchor rod inside, greatly reduce the situation that underground water seeps into foundation pit from support piece connecting gap or gap between anchor rod and support piece, ensure that construction environment is dry, conducive to the smooth progress of construction.Waterproof sheet and water gap being set in support piece inner wall, cooperate with connecting mechanism, not only further enhance waterproof performance, also provide passageway for ordered discharge of underground water, so that underground water can flow to collection tank smoothly, effectively avoid the accumulation of underground water in foundation pit, so as to guarantee the safety and efficiency of construction. BRIEF DESCRIPTION OF DRAWINGS
[0016] The drawings described herein are used to provide further understanding of the embodiments of the utility model, constitute a part of this application, and do not constitute the limitation to the embodiments of the utility model.In the drawings:
[0017] Figure 1 It is the overall structure schematic diagram of the utility model;
[0018] Figure 2 It is the structure schematic diagram of anchor rod of the utility model, and it is aimed at showing drainage mechanism;
[0019] Figure 3 It is Figure 1 Enlarged view of A of
[0020] Figure 4 It is Figure 1 Enlargal view of B of
[0021] Figure 5 It is Figure 1 Enlarged view of C of
[0022] Figure 6 It is the structure schematic diagram of support piece of the utility model.
[0023] The represented by reference signs is:
[0024] 10, support piece, 11, opening, 12, protrusion, 13, groove,
[0025] 20, waterproof sheet, 21, through hole, 22, screw rod, 23, second nut,
[0026] 30, anchor rod, 31, threaded section, 32, first nut, 33, perforation, 34, rod head,
[0027] 40, water outlet, 41, water channel, 42, water collection tank. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely below in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model. The illustrative embodiments of the utility model and their descriptions are only used to explain the utility model, and not as a limitation on the utility model. It should be noted that the utility model is already in the actual research and development stage.
[0029] Unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meaning by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.
[0030] Embodiment 1:
[0031] As Figure 1 A multifunctional waterproof lining structure for subway excavation, comprising a plurality of supporting pieces 10 arranged along the inner wall of the foundation pit, a clamping mechanism for connecting adjacent supporting pieces 10 is arranged between adjacent supporting pieces 10, an anchor rod 30 penetrating the supporting piece 10 and inserted into the soil layer is arranged on each supporting piece 10, and a drainage mechanism for draining underground water is arranged on the anchor rod 30; a plurality of waterproof pieces 20 are arranged on one side of the inner wall of the plurality of supporting pieces 10, a water passing gap is left between the waterproof pieces 20 and the supporting pieces 10, and a connecting mechanism for connecting the waterproof pieces 20 and the supporting pieces 10 is arranged between the waterproof pieces 20 and the supporting pieces 10.
[0032] The scheme aims to solve the problems of groundwater seepage affecting construction, insufficient stability and waterproof performance of traditional lining structure in subway underground excavation construction. Multiple supporting pieces 10 are spliced along the inner wall of the foundation pit through a clamping mechanism to form a preliminary protection structure. Anchor rods 30 are inserted into the soil layer, and their drainage mechanism introduces groundwater into the interior of the anchor rod 30. Waterproof pieces 20 are connected to supporting pieces 10 through a connecting mechanism to form a barrier to prevent groundwater from directly seeping into the foundation pit, and the water gap between the two provides a channel for the flow of groundwater. In actual application, this design enhances the overall stability of the lining structure, effectively reduces the seepage of groundwater from the gap, ensures the dryness of the construction environment, and improves the safety and efficiency of construction.
[0033] As Figure 1 With Figure 6 In this embodiment, the clamping mechanism includes a protrusion 12 provided on each supporting piece 10 and a groove 13 matched with the protrusion 12.
[0034] The scheme aims to solve the problems of insufficient stability and waterproofness of adjacent supporting pieces 10. The protrusions 12 provided on the supporting pieces 10 are matched with the grooves 13 on the adjacent supporting pieces 10. During construction, the protrusions 12 of adjacent supporting pieces 10 are inserted into the grooves 13 to achieve close connection. This clamping method is simple and effective, enhances the connection strength between the supporting pieces 10, reduces the possibility of groundwater seepage from the connection part, ensures the integrity and stability of the lining structure, and provides a reliable foundation for subsequent construction.
[0035] As Figure 2 In this embodiment, the anchor rod 30 has a cavity inside, the end of the anchor rod 30 close to the inner wall of the supporting piece 10 is provided with an opening communicating with the cavity, the drainage mechanism includes a plurality of openings 11 provided on the anchor rod 30, each opening 11 communicates with the cavity; the anchor rod 30 and the supporting piece 10 are also provided with a fixing mechanism for fixing the position of the anchor rod 30.
[0036] The scheme focuses on solving the problem of poor drainage effect of the anchor rod 30. The cavity inside the anchor rod 30 provides a channel for the flow of groundwater. The opening close to the end of the inner wall of the supporting piece 10 communicates with the cavity, facilitating the entry of groundwater. The plurality of openings 11 on the anchor rod 30 allows groundwater in the surrounding soil layer to enter the cavity smoothly. In actual application, this design greatly improves the drainage efficiency of groundwater, reduces the pressure of groundwater on the supporting structure, and is conducive to maintaining the dryness and stability of the construction area.
[0037] Vibrations during construction can cause a squeezing effect on the surrounding rock and soil. This squeezing promotes the flow of water in the soil that is in contact with the anchor rod 30, thus increasing the power and the possibility of the groundwater entering the interior of the anchor rod 30 through the opening 11 on the anchor rod 30. At the same time, the vibrations can also change the pores and fissures in the rock and soil, creating more favorable channels for the flow of groundwater, thus improving the drainage effect.
[0038] In order to make the opening 11 only allow water to enter and prevent soil, stones or impurities from entering the anchor rod 30, the diameter of the opening 11 should be small enough to be smaller than the size of common soil particles and stones, and at the same time, a filter screen or filter layer can be provided at the opening 11, the pore size of the filter screen being smaller than that of water molecules but larger than that of soil particles and impurities, thus effectively preventing them from entering the anchor rod 30 and ensuring the smoothness of the channel inside the anchor rod 30.
[0039] As Figure 4 In this embodiment, the fixing mechanism includes a first nut 32 and a threaded segment 31 provided on the anchor rod 30 and matched with the first nut 32, and the first nut 32 is connected with the threaded segment 31 to fix the anchor rod 30 on the inner wall of the support plate 10.
[0040] The anchor rod 30 is inserted through the support plate 10, and the first nut 32 is rotated to move on the threaded segment 31 until it is tightly attached to the inner wall of the support plate 10, thereby firmly fixing the anchor rod 30 on the support plate 10. This fixing mechanism is simple to operate, stable and reliable, and can effectively prevent the anchor rod 30 from moving during construction, ensuring the normal operation of the drainage mechanism and improving the overall stability and safety of the lining structure.
[0041] In this embodiment, the end of the anchor rod 30 inserted into the soil layer is provided with a rod head 34, and the cross section of the rod head 34 gradually shrinks in the direction from the threaded segment 31 of the anchor rod 30 to the opening 11.
[0042] This scheme optimizes the effect of the anchor rod 30 inserted into the soil layer. The rod head 34 provided at the end of the anchor rod 30 inserted into the soil layer has a cross section that gradually shrinks in the direction from the threaded segment 31 of the anchor rod 30 to the opening 11. This design makes it easier for the anchor rod 30 to be inserted into the soil layer when it is inserted into the soil layer, reduces resistance, and at the same time, under the action of construction vibration, can better promote the groundwater in the surrounding soil to enter the interior of the anchor rod 30 through the opening 11.
[0043] As Figure 5In the embodiment, the waterproof sheet 20 is provided with a hole, a screw rod 22 and a second nut 23 matched with the screw rod 22, and the screw rod 22 is inserted into the supporting sheet 10 through the hole. The hole is reserved on the waterproof sheet 20, the screw rod 22 is inserted into the supporting sheet 10 through the hole, and then the second nut 23 is screwed to tightly connect the waterproof sheet 20 and the supporting sheet 10. The connection mode is convenient for installation and disassembly, the position of the waterproof sheet 20 can be adjusted according to actual needs, the waterproof effect is enhanced, and the underground water can flow along the predetermined path.
[0044] Embodiment 2
[0045] As Figure 1 With Figure 3 On the basis of the above-mentioned embodiments, in the embodiment, the waterproof sheet 20 contacting the ground of the foundation pit is provided with a water outlet 40, and the foundation pit is further provided with a drainage mechanism communicating with the water outlet 40.
[0046] The scheme focuses on solving the problem of poor drainage of underground water at the bottom of the foundation pit. The water outlet 40 is arranged on the waterproof sheet 20 contacting the ground of the foundation pit, so that the underground water collected here can be smoothly drained. In actual application, the water outlet 40 is arranged to timely and effectively drain the accumulated water at the bottom of the foundation pit, avoiding the influence of the accumulated water on construction, and improving the construction efficiency and safety.
[0047] In the embodiment, the drainage mechanism includes a water channel 41 and a collection tank communicating with the water channel 41, and the collection tank is connected to the water outlet 40 through the water channel 41. The water channel 41 communicates the water outlet 40 with the collection tank, and the underground water flows from the water outlet 40 into the collection tank through the water channel 41. Such a design realizes the centralized collection and drainage of underground water, facilitates subsequent treatment and utilization, and reduces the interference with the construction environment.
[0048] In the embodiment, the anchor rod 30 and the screw rod 22 are both perpendicular to the tangent of the curved surface of the inner wall of the foundation pit. The anchor rod 30 and the screw rod 22 are both perpendicular to the tangent of the curved surface of the inner wall of the foundation pit. In actual application, the perpendicular arrangement mode makes the anchor rod 30 and the screw rod 22 better bear the force from all directions, reduces the structural deformation and damage caused by uneven force, and improves the overall stability and reliability of the lining structure.
[0049] The above examples are only used to illustrate the technical solutions of the present disclosure, rather than limit them; although the present disclosure has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure. The following points need to be explained: only the structures involved in the embodiments of the present utility model are involved in the drawings of the embodiments of the present utility model, and other structures can refer to the usual design. In the case of no conflict, the features in the same embodiment and different embodiments of the present utility model can be combined with each other. The above is only a demonstrative implementation manner of the present utility model, rather than used to limit the protection scope of the present utility model, and the protection scope of the present utility model is determined by the appended claims.
Claims
1. A multi-functional waterproof lining structure for subway excavation, comprising a plurality of support pieces (10) arranged along the inner wall of a foundation pit, characterized in that a clamping mechanism is arranged between adjacent support pieces (10) to connect the adjacent support pieces (10) to each other, an anchor rod (30) is arranged on each support piece (10) and penetrates the support piece (10) and is inserted into the soil layer, and a drainage mechanism is arranged on the anchor rod (30) to drain underground water. The clamping mechanism comprises a protrusion (12) arranged on each support piece (10) and a groove (13) matched with the protrusion (12). The anchor rod (30) has a cavity in the interior thereof, an opening is arranged on the end of the anchor rod (30) close to the inner wall of the support piece (10) and communicates with the cavity, the drainage mechanism comprises a plurality of openings (11) arranged on the anchor rod (30), each opening (11) communicates with the cavity, and a fixing mechanism is further arranged between the anchor rod (30) and the support piece (10) to fix the position of the anchor rod (30). The fixing mechanism comprises a first nut (32) and a threaded segment (31) arranged on the anchor rod (30) and matched with the first nut (32), and the first nut (32) is connected with the threaded segment (31) to fix the anchor rod (30) on the inner wall of the support piece (10).
2. The multi-functional waterproof lining structure for subway excavation according to claim 1, characterized in that, The end of the anchor rod (30) inserted into the soil layer is provided with a rod head (34), and the cross section of the rod head (34) gradually shrinks in the direction from the threaded segment (31) of the anchor rod (30) to the opening (11).
3. The multi-functional waterproof lining structure for subway excavation according to claim 2, characterized in that, Each waterproof piece (20) is provided with a hole, and a screw rod (22) and a second nut (23) matched with the screw rod (22) are further arranged on the waterproof piece (20), the screw rod (22) penetrates the hole and is inserted into the support piece (10).
4. The multi-functional waterproof lining structure for subway excavation according to claim 3, characterized in that, A water outlet (40) is arranged on the waterproof piece (20) in contact with the ground of the foundation pit, and a drainage mechanism communicating with the water outlet (40) is further arranged in the foundation pit.
5. The multi-functional waterproof lining structure for subway excavation according to claim 4, characterized in that, The drainage mechanism comprises a water channel (41) and a collecting tank communicating with the water channel (41), and the collecting tank is connected to the water outlet (40) through the water channel (41).
6. The multi-functional waterproof lining structure for subway excavation according to claim 5, characterized in that, The anchor rod (30) and the screw rod (22) are both perpendicular to the tangent of the inner wall curve of the foundation pit.
7. The multi-functional waterproof lining structure for subway excavation according to claim 6, characterized in that, 8. The multi-functional waterproof lining structure for subway excavation according to claim 7, characterized in that, 9. The multi-functional waterproof lining structure for subway excavation according to any one of claims 6-8, characterized in that,