Auxiliary drainage structure for tunnel

Abstract

The utility model relates to the technical field of tunnel construction structures, and discloses a tunnel auxiliary drainage structure which comprises a retaining wall of a tunnel portal and a plurality of sedimentation tanks arranged in the length direction of the retaining wall, and the retaining wall is connected with a plurality of supporting beams arranged in the length direction of the retaining wall at intervals. One end of the support beam is fixedly connected with the retaining wall, the other end of the support beam extends to the outer side of the retaining wall, a drain pipe communicated between two adjacent sedimentation tanks is arranged below the support beam extending to the outer side of the retaining wall, and a suspension connecting piece is connected between the drain pipe and the support beam. According to the utility model, the suspended drain pipe is arranged, so that the drained water of the upstream sedimentation tank can automatically flow to the downstream sedimentation tank, and the problems of high cost and poor stability caused by adopting a water suction pump in the tunnel drainage sedimentation process in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction structure technical field, concretely relates to a tunnel auxiliary drainage structure. BACKGROUND

[0002] In the tunnel construction process, a large amount of wastewater is produced due to drilling and blasting wastewater, tunnel gushing water, construction machinery use and cleaning at the excavation section, and these water contains a large amount of suspended solids, solid particles, heavy metal ions, petroleum substances and other pollutants, so when the water is discharged outside the tunnel portal, the drainage needs to be settled to reduce the pollution caused by the drainage. At present, the sedimentation tank is arranged at the position of the portal retaining wall, and according to the sedimentation requirement, a plurality of sedimentation tanks are generally arranged to complete the sedimentation of the drainage by stages using the plurality of sedimentation tanks. During the sedimentation process in the sedimentation tank, due to the construction topographic restriction and other reasons, the plurality of sedimentation tanks cannot be arranged close to each other and exist at a certain distance, in order to make the sedimentation process stably proceed, at present, the way of arranging a water suction pump between the adjacent sedimentation tanks is adopted, the water suction pump is used to suck the water settled in the upstream sedimentation tank into the downstream sedimentation tank for further settlement, and finally the sedimentation process is smoothly completed.

[0003] Although the way of adopting the water suction pump can make the sedimentation process smoothly complete, there are many problems in the actual construction process: 1. The way of using the water suction pump to suck water has high energy consumption of the water suction pump, which increases the cost of sedimentation, especially for long tunnel construction, the construction period is longer, and the cost problem of the water suction pump is more prominent; 2. The water suction pump has large noise during the working process, and due to the existence of a large number of solid particles in the tunnel drainage, the water suction pump is easy to be blocked and worn during the use process, so that the maintenance cost of the water suction pump is high, which not only further increases the cost of sedimentation, but also affects the construction progress. Therefore, it is necessary to improve the existing way of the water suction pump to improve the stability of the sedimentation process and reduce the sedimentation cost. CONTENT OF THE UTILITY MODEL

[0004] The utility model intends to provide a tunnel auxiliary drainage structure to solve the problems of large cost and poor stability in the way of using the water suction pump in the tunnel drainage and sedimentation process in the prior art.

[0005] In order to solve the above problems, the utility model adopts the following technical scheme: a tunnel auxiliary drainage structure, which comprises a retaining wall of a tunnel portal and a plurality of sedimentation tanks arranged along the length direction of the retaining wall, a plurality of support beams are connected to the retaining wall and arranged at intervals along the length direction of the retaining wall, one end of the support beam is fixedly connected to the retaining wall, and the other end extends to the outside of the retaining wall, a drainage pipe is arranged between the support beam and the adjacent two sedimentation tanks, and a suspension connecting piece is connected between the drainage pipe and the support beam.

[0006] The principle of the scheme is: in the application, the support beam is fixedly connected on the retaining wall, and the drain pipe is arranged outside the retaining wall, the drain pipe is suspended below the end of the support beam extending outside the retaining wall by the suspension connecting piece, the drain pipe connects the adjacent two sedimentation tanks, when the upstream sedimentation tank is completed, the water can flow to the downstream sedimentation tank through the drain pipe, and the tunnel drainage is orderly and stably completed.

[0007] The beneficial effects of the scheme are:

[0008] 1. The cost of the tunnel drainage sedimentation process is lower: compared with the water pump suction mode in the prior art, the water in the upstream sedimentation tank can automatically flow to the downstream sedimentation tank through the drain pipe in the application, and the cost is only the construction of the drain pipe structure, compared with the large amount of electric energy consumed by the water pump, the cost of the application is lower, especially for long tunnel and super-long tunnel construction, the cost saving effect of the application is more obvious.

[0009] 2. The structure is stable and easy to install: the number of support beams in the application is multiple, and the multiple support beams are arranged at intervals along the length direction of the retaining wall, multiple suspension connecting pieces can be arranged for each drain pipe to ensure that the drain pipe can be effectively supported regardless of the length of the drain pipe, so that the drain pipe can always stably drain water; in addition, by arranging the support beam and the suspension connecting piece, the length of the suspension connecting piece is arranged during actual installation, so that the inclination angle of the drain pipe can be easily controlled, the water in the upstream sedimentation tank can automatically and stably flow to the downstream sedimentation tank, and the whole structure has the advantage of adjustable inclination angle compared with directly burying the drain pipe under the ground, which can realize better drainage.

[0010] 3. The overall structure is very regular: in the application, one end of the support beam extends to the outside of the retaining wall, when the drain pipe is installed, the drain pipe is located outside the retaining wall, which can avoid the disorder of the drain pipe on the road surface in the prior art using the water pump mode, so that the whole drainage structure is more regular.

[0011] Preferably, as an improvement, the support beam is inclined, and the end of the support beam extending to the outside of the retaining wall is the high end.

[0012] In the scheme, the support beam is inclined, and the end of the support beam extending to the outside of the retaining wall is higher, when the suspension connecting piece is connected to the support beam and the drain pipe, the weight of the drain pipe and the water in the drain pipe acts on the suspension connecting piece, since the support beam is inclined at this time, the top end of the suspension connecting piece has a tendency to automatically slide to the low end of the support beam (i.e. the end of the support beam fixedly connected with the retaining wall), which avoids the suspension connecting piece from easily sliding out of the high end of the support beam during use, and improves the stability of the whole connecting structure.

[0013] Preferably, as an improvement, the retaining wall is fixedly connected with a U-shaped hook for assisting in fixing the support beam.

[0014] In this scheme, the U-shaped hook is used to further fix the end of the support beam connected to the retaining wall, so that the support beam can be more stably connected to the retaining wall, so that the support beam can provide more stable support force to the drain pipe.

[0015] Preferably, as an improvement, the distance between adjacent support beams is less than or equal to 2m, the length of the support beam fixedly connected to the retaining wall is greater than or equal to 0.5m, and the height of the top surface of the drain pipe from the top surface of the retaining wall is greater than or equal to 0.3m.

[0016] In this scheme, the distance between adjacent support beams is less than or equal to 2m, which avoids the support beams being too far apart to provide stable support force to the drain pipe, and the length of the support beam fixedly connected to the retaining wall is greater than or equal to 0.5m, so that a single support beam can be stably connected to the retaining wall. In addition, the height of the top surface of the drain pipe from the top surface of the retaining wall is greater than or equal to 0.3m, so that the top of the retaining wall is flush with the road surface, and thus the drain pipe is lower than the road surface during drainage, avoiding the drain pipe being too high to affect the appearance.

[0017] Preferably, as an improvement, the suspension connecting member is a steel wire rope, and the support beam is an I-beam.

[0018] In this scheme, the suspension connecting member is a steel wire rope, which is convenient to connect and has high strength, and can effectively bear the force of the drain pipe; the support beam is an I-beam, which is easy to obtain and has high strength during construction. When the I-beam is fixedly connected to the retaining wall, only one end of the I-beam needs to be placed in the pre-cast position during pouring of the retaining wall, and then the concrete is poured to fix one end of the I-beam, which is very simple and convenient to operate.

[0019] Preferably, as an improvement, the outer side of the drain pipe is provided with a stress dispersing member, and the suspension connecting member is connected with the stress dispersing member.

[0020] In this scheme, the stress dispersing member is provided on the outer side of the drain pipe, and the suspension connecting member is connected with the stress dispersing member. The stress dispersing member has a larger contact area with the drain pipe, so that the drain pipe is more uniformly stressed when it is suspended by the suspension connecting member. By relying on the stress dispersing effect of the stress dispersing member, the risk of deformation and damage of the drain pipe due to stress concentration is effectively reduced.

[0021] Preferably, as an improvement, the stress dispersing member is a stress dispersing plate, and the stress dispersing plate is arranged along the length direction of the drain pipe.

[0022] In the scheme, the stress dispersion member is a stress dispersion plate in a plate structure, which is placed on the outer wall of the drain pipe in use, so that the stress dispersion plate is convenient to install and has obvious stress dispersion effect.

[0023] Preferably, as an improvement, the stress dispersion members are arranged in multiple groups along the length direction of the drain pipe, and the stress dispersion members in each group are arranged in multiple stress dispersion plates which are uniformly arranged along the circumference of the outer wall of the drain pipe.

[0024] In the scheme, the multiple groups of stress dispersion plates are arranged, and in actual application, the appropriate number of stress dispersion plates can be arranged according to the number of the suspension connecting members, and at least one group of stress dispersion plates is arranged for each suspension connecting member to ensure the stress dispersion effect, and the stress dispersion plates in each group are arranged in multiple stress dispersion plates which are uniformly arranged along the circumference of the drain pipe, so that the suspension force acting on the drain pipe is more uniform, and the protection effect on the drain pipe is better.

[0025] Preferably, as an improvement, the drain pipe is a corrugated pipe.

[0026] In the scheme, the corrugated pipe is used as the drain pipe, the structure of the corrugated pipe is stable, and the corrugated pipe can stably drain water, and the corrugated pipe can adjust the bending angle, so that the bending shape of the corrugated pipe can be adjusted according to the setting direction of the retaining wall, so that the corrugated pipe can better meet the use requirements.

[0027] Preferably, as an improvement, the outer side of the drain pipe is provided with a sun protection sleeve.

[0028] In the scheme, the sun protection sleeve is arranged on the outer side of the drain pipe to reduce the damage of sunlight and rain to the corrugated pipe, so that the drain pipe can stably complete the drainage operation in the case that the tunnel construction period is long. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a top view of the drain pipe arranged on the retaining wall in the first embodiment of the utility model.

[0030] Figure 2 It is an elevation view of the drain pipe connected on the retaining wall in the first embodiment of the utility model.

[0031] Figure 3 It is an elevation view of the drain pipe connected on the retaining wall in the second embodiment of the utility model.

[0032] Figure 4 It is an elevation view of the drain pipe connected on the retaining wall in the third embodiment of the utility model. DETAILED DESCRIPTION

[0033] The following will be further described in detail through specific embodiments:

[0034] The reference numerals in the accompanying drawings of the instruction manual include: 1. retaining wall; 2. sedimentation tank; 3. I-beam; 4. U-hook; 5. corrugated pipe; 6. wire rope; 7. sun protection cover; 8. stress dispersion plate.

[0035] Example 1

[0036] This embodiment is as shown in the attached figure. Figure 1 As shown: A tunnel auxiliary drainage structure is used for auxiliary drainage when a retaining wall 1 is set at the tunnel entrance and multiple sedimentation tanks 2 are set along the direction of the retaining wall 1. The number of sedimentation tanks 2 is set according to the actual sedimentation requirements, and there is a certain distance between the multiple sedimentation tanks 2, for example, 30m apart. At this time, the tunnel auxiliary drainage structure in this solution is used for effective drainage. In this embodiment, two adjacent sedimentation tanks 2 are used as an example for illustration. In other embodiments other than this embodiment, the number of sedimentation tanks 2 can be three or more, which will not be elaborated here.

[0037] Specifically, in combination Figure 1 and Figure 2 The retaining wall 1 is connected to several support beams spaced apart along its length. In this embodiment, the support beams are I-beams 3. One end of the I-beam 3 is fixedly connected to the retaining wall 1, and the other end extends to the outside of the retaining wall 1. During actual construction, the I-beam 3 is poured together with the retaining wall 1, and the length of the I-beam 3 inserted into the retaining wall 1 is greater than or equal to 0.5m, preferably 0.5m. The I-beam 3 is located near the top of the retaining wall 1. To improve the fixed connection effect of the I-beam 3, a fixing U-shaped hook 4 is poured simultaneously when the retaining wall 1 is poured. The end of the I-beam 3 inside the retaining wall 1 is located inside the U-shaped hook 4. The number of U-shaped hooks 4 can be one or more, preferably three. In addition, in this embodiment, the distance between adjacent I-beams 3 is less than or equal to 2m, preferably 2m.

[0038] Combination Figure 1 and Figure 2, the I-shaped steel 3 extending to the outside of the retaining wall 1 is provided with a drainage pipe communicated between two adjacent sedimentation tanks 2, and a suspension connecting piece is connected between the drainage pipe and each I-shaped steel 3, which plays a role of suspending the drainage pipe. In the embodiment, the drainage pipe is a corrugated pipe 5, and the suspension connecting piece is a steel wire rope 6, the top end of the steel wire rope 6 is bound to one end of the I-shaped steel 3 extending to the outside of the retaining wall 1, and the bottom end of the steel wire rope 6 is wound through the corrugated pipe 5, and the corrugated pipe 5 is suspended by the steel wire rope 6. Since a plurality of steel wire ropes 6 are provided to suspend the corrugated pipe 5 in the embodiment, the corrugated pipe 5 can be installed to a predetermined inclination angle by setting steel wire ropes 6 of different lengths at different positions during actual installation of the corrugated pipe 5, so that the corrugated pipe 5 can stably transport the water after sedimentation in the upstream sedimentation tank 2 to the downstream sedimentation tank 2. In addition, when the corrugated pipe 5 is installed and fixed, the height of the top surface of the drainage pipe from the top surface of the retaining wall 1 is greater than or equal to 0.3 m, and the preferred height is 1.5 m in the embodiment, so as to avoid the top surface of the corrugated pipe 5 protruding from the top surface of the retaining wall 1 after installation and fixation, prevent the corrugated pipe 5 from being easily damaged by being protruding from the road surface, and at the same time, the corrugated pipe 5 is located below the road surface, which is better in appearance and more regular.

[0039] The specific implementation process is as follows:

[0040] When the upstream sedimentation tank 2 completes the corresponding tunnel drainage and sedimentation process, the water is flowed into the downstream sedimentation tank 2 by the corrugated pipe 5. During the water flowing through the corrugated pipe 5, the I-shaped steel 3 and the steel wire rope 6 play a role of suspending and fixing the corrugated pipe 5, so as to ensure that the drainage process is stably carried out. In the embodiment, the corrugated pipe 5 is used to transport the sedimentation water, which is more stable and lower in cost than the method of using a water pump in the prior art.

[0041] Embodiment Two

[0042] The difference between the embodiment two and the embodiment one is that, as shown in Figure 3 , the I-shaped steel 3 is inclinedly arranged in the embodiment, and one end of the I-shaped steel 3 extending to the outside of the retaining wall 1 is a high end. When the top of the steel wire rope 6 is bound to the I-shaped steel 3, and the sedimentation water flows in the corrugated pipe 5, the weight of the corrugated pipe 5 and the water in the corrugated pipe 5 acts on the steel wire rope 6. In the case of the inclined arrangement of the I-shaped steel 3, the top end of the steel wire rope 6 has a tendency to slide to the low end of the I-shaped steel 3, which can avoid the steel wire rope 6 easily sliding off the high end of the I-shaped steel 3, and improve the stability of the steel wire rope 6 suspending the corrugated pipe 5.

[0043] Embodiment Three

[0044] The difference between the embodiment three and the embodiment one is that, as shown in Figure 4As shown, the outer wall of the bellows 5 is wrapped with a sun protection sleeve 7 in the embodiment, and the sun protection sleeve 7 is used to protect the outer wall of the bellows 5 from the sun; in addition, stress dispersion members are arranged outside the sun protection sleeve 7 in the embodiment, the stress dispersion members are long strip-shaped stress dispersion plates 8, the stress dispersion plates 8 can be made of templates or stainless steel plates, etc., the stress dispersion plates 8 are arranged in multiple groups along the axis direction of the bellows 5, the number of the stress dispersion plates 8 in each group is multiple, and the multiple stress dispersion plates 8 are uniformly arranged along the circumference of the bellows 5, the steel wire ropes 6 are wound outside the stress dispersion plates 8, and each steel wire rope 6 is provided with at least one group of stress dispersion plates 8, so that when the bellows 5 is suspended and fixed by the steel wire ropes 6, the stress dispersion plates 8 can transmit the force to the bellows 5, and the stress concentration and deformation damage of the bellows 5 are effectively reduced.

[0045] The above is only the embodiment of the utility model, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical scheme of the utility model, a number of modifications and improvements can be made, which should also be considered as the protection scope of the utility model, and these will not affect the effect and practicality of the utility model. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A tunnel auxiliary drainage structure, comprising a retaining wall of a tunnel portal and a plurality of sedimentation tanks arranged along the length direction of the retaining wall, characterized in that: The retaining wall is connected with a plurality of support beams which are arranged at intervals along the length direction of the retaining wall, one end of the support beam is fixedly connected with the retaining wall, and the other end extends to the outside of the retaining wall, the support beam extending to the outside of the retaining wall is provided with a drainage pipe which is communicated between adjacent two sedimentation tanks, and a suspension connecting piece is connected between the drainage pipe and the support beam.

2. A tunnel assisted drainage structure according to claim 1, wherein: The support beam is arranged obliquely, and the end of the support beam extending to the outside of the retaining wall is a high end.

3. A tunnel assisted drainage structure according to claim 1, wherein: The retaining wall is fixedly connected with a U-shaped hook for assisting in fixing the support beam.

4. The tunnel assisted drainage structure of claim 1, wherein: The interval between adjacent support beams is less than or equal to 2m, the length of the support beam fixedly connected in the retaining wall is greater than or equal to 0.5m, and the height from the top surface of the drainage pipe to the top surface of the retaining wall is greater than or equal to 0.3m.

5. The tunnel assisted drainage structure of claim 1, wherein: The suspension connecting piece is a steel wire rope, and the support beam is an I-beam.

6. A tunnel assisted drainage structure according to any one of claims 1 to 5, wherein: The outside of the drainage pipe is provided with a stress dispersion piece, and the suspension connecting piece is connected with the stress dispersion piece.

7. A tunnel assisted drainage structure according to claim 6, wherein: The stress dispersion piece is a stress dispersion plate which is arranged along the length direction of the drainage pipe.

8. A tunnel assisted drainage structure according to claim 7, wherein: The number of the stress dispersion pieces is multiple groups, the multiple groups of stress dispersion plates are arranged along the length direction of the drainage pipe, the number of the stress dispersion plates in each group is multiple, and the multiple stress dispersion plates are uniformly arranged along the outer wall of the drainage pipe in the circumferential direction.

9. A tunnel assisted drainage structure according to claim 6, wherein: The drainage pipe is a corrugated pipe.

10. The tunnel assisted drainage structure of claim 6, wherein: The outside of the drainage pipe is provided with a sunscreen protective sleeve.

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