CN220687399U - Automatic pressure release drainage system in tunnel - Google Patents
Automatic pressure release drainage system in tunnel Download PDFInfo
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- CN220687399U CN220687399U CN202322276282.5U CN202322276282U CN220687399U CN 220687399 U CN220687399 U CN 220687399U CN 202322276282 U CN202322276282 U CN 202322276282U CN 220687399 U CN220687399 U CN 220687399U
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- tunnel
- pressure relief
- automatic pressure
- drainage system
- side ditch
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- 239000011435 rock Substances 0.000 claims abstract description 7
- 239000004576 sand Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 201000010099 disease Diseases 0.000 abstract description 8
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000005336 cracking Methods 0.000 abstract description 6
- 239000003673 groundwater Substances 0.000 description 13
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004035 construction material Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
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- 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
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- Lining And Supports For Tunnels (AREA)
Abstract
The application relates to the field of tunnel engineering, in particular to an automatic pressure relief and drainage system for a tunnel. Solves the problems of water seepage, bulge cracking and other diseases of the tunnel pavement caused by the blockage of the central ditch at the tunnel bottom. Comprising the following steps: the drainage sand cushion layer is paved between the tunnel bottom structural layer and the tunnel bottom surrounding rock in a full tunnel through length manner; the automatic pressure relief wells are arranged at equal intervals at positions of two sides close to the cable grooves and are vertically arranged at the bottom of the tunnel; and the auxiliary drainage system is arranged on the automatic pressure relief well and is arranged on one side of the outer vertical wall of the cable groove. According to the scheme, the automatic pressure relief wells and the auxiliary drainage systems are arranged on the two sides of the tunnel pavement, so that the purposes of automatic pressure relief, automatic drainage and maintenance-free are achieved, and the scheme has important significance in improving the engineering quality of the highway tunnel, improving the service level of the highway tunnel and saving the operation and maintenance cost of the tunnel.
Description
Technical Field
The application relates to the field of tunnel engineering, in particular to an automatic pressure relief and drainage system for a tunnel.
Background
According to the technical condition monitoring of the national province trunk road network by the transportation department in recent years, numerous road tunnels established and operated generate diseases after being put into operation, wherein inverted arch bulge and road surface water seepage caused by unsmooth drainage of tunnel bottoms are one of the most common diseases, and long-term trouble is caused to the road transportation industry.
The damage of the inverted arch bulge to the operation tunnel is seen, so that the road surface bulge, the crack, the deformation and the like are caused, and even the driving safety of the tunnel is threatened; the problem of road surface icing in winter caused by water seepage diseases forms a great threat to the safe operation of road tunnels in northern areas of China. According to the research of domestic academia and engineering community on the problems, the unsmooth drainage of tunnel groundwater is one of the important reasons for causing the bulge and cracking of tunnel inverted arch. The road tunnel design rule adopts vertical drainage system to drain the groundwater that will get into the tunnel scope at present and leaves the tunnel, and this kind of drainage system is the unilateral drainage of line, very easily takes place to block up, especially to the central escape canal of burying deeply at the tunnel end, once block up will lead to tunnel end groundwater pressure to increase continually, groundwater level rise sharply, causes serious diseases such as tunnel infiltration and inverted arch uplift.
Aiming at the problem that the technology for treating the blocking of the tunnel bottom central ditch in the operation stage of the highway tunnel has become a 'neck clamping' technology for restricting the development of the maintenance industry of the highway tunnel, the conventional technical scheme at present mainly comprises the steps of strongly dredging the central ditch by means of pipeline dredging equipment and partially removing the tunnel bottom structure to reconstruct the central ditch. The defects of the two technical schemes are obvious, firstly, the dredging difficulty is high, the economical efficiency is poor, and the dredging effect cannot be ensured; and secondly, the dredging operation has large interference and high safety risk to the normal traffic operation of the tunnel. In view of the problem of blocking a central ditch at the tunnel bottom, the problem is difficult to radically cure by means of maintenance technology after the tunnel is put into operation, so that the optimization of a tunnel bottom drainage system at the tunnel construction stage is a key for solving the technical problem.
Disclosure of Invention
In view of this, the application provides an automatic pressure release drainage system in tunnel, can effectively solve the tunnel road surface infiltration that leads to because of tunnel bottom center ditch blocks up, disease problems such as bump fracture. According to the scheme, the automatic pressure relief wells and the auxiliary drainage systems are arranged on the two sides of the tunnel pavement, so that the purposes of automatic pressure relief, automatic drainage and maintenance-free are achieved, and the scheme has important significance in improving the engineering quality of the highway tunnel, improving the service level of the highway tunnel and saving the operation and maintenance cost of the tunnel.
In a first aspect, the present application provides an automatic pressure relief drainage system for a tunnel, comprising: the drainage sand cushion layer is paved between the tunnel bottom structural layer and the tunnel bottom surrounding rock in a full tunnel through length manner; and
the automatic pressure relief wells are arranged at equal intervals at positions of two sides close to the cable grooves and are vertically arranged at the bottom of the tunnel;
the automatic pressure relief well comprises a well wall, permeable gravel and pressure relief drainage holes;
the well wall is filled with permeable gravel, and the upper end of the well wall is provided with a pressure relief drain hole; and
the auxiliary drainage system is arranged on the automatic pressure relief well and is arranged on one side of the outer vertical wall of the cable groove;
the auxiliary drainage system comprises a side ditch cover plate, a side ditch and a side ditch bottom paving device;
the side ditch is arranged on the automatic pressure relief well, the bottom of the side ditch is provided with a side ditch bottom laying plate, and the upper part of the side ditch is provided with a side ditch cover plate.
Further, the well wall is coated with a polymer reverse filtering material.
Compared with the prior art, the beneficial effect of this scheme lies in:
(1) The utility model can realize one-time investment and permanently solve the tunnel disease problems of pavement seepage, structural cracking and the like caused by the failure of the tunnel bottom longitudinal drainage system.
(2) The utility model skillfully utilizes the principle of automatic balance of water pressure, realizes the controlled discharge of the underground water of the tunnel, and can effectively prevent pavement subsidence caused by excessive discharge of the underground water, pavement bulge caused by unsmooth discharge of the underground water and deformation and cracking of the tunnel structure.
(3) The structure and the auxiliary drainage system are completed in the tunnel construction period, the structure is simple, the construction is convenient, the main structure of the tunnel is not adversely affected, the construction materials are conventional materials, and the economical efficiency is good.
(4) The utility model has flexible application scene, can be suitable for tunnels with stable groundwater level and tunnels with unstable groundwater level, and can also be suitable for tunnels built in water permeable stratum and water impermeable stratum.
(5) After the tunnel is built and operated, special maintenance is not needed for the structure and the auxiliary drainage system, and the tunnel operation and maintenance cost can be saved.
Drawings
Fig. 1 is a schematic structural diagram of an automatic pressure relief and drainage system for tunnels.
FIG. 2 is a front view of an automatic relief well and auxiliary drainage system of a tunnel automatic relief drainage system;
FIG. 3 is a left side view of an automatic relief well and auxiliary drainage system of the tunnel automatic relief drainage system;
fig. 4 is a schematic diagram of an automatic pressure relief principle of an automatic pressure relief drainage system of a tunnel;
the figure shows:
a drainage sand cushion layer 1;
the automatic pressure relief well 2, the well wall 4, the polymer-coated reverse filtering material 5, the permeable gravel 6 and the pressure relief drain hole 7;
an auxiliary drainage system 3, a side ditch cover plate 8, a side ditch 9 and a side ditch bottom 10;
a tunnel bottom structure layer 11;
tunnel bottom surrounding rock 12;
a cable trough 13.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
An exemplary automatic pressure relief and drainage system for a tunnel is as follows:
the utility model belongs to an automatic pressure relief well and an auxiliary drainage system of a tunnel as shown in figures 1-4, and consists of a drainage sand cushion layer 1, an automatic pressure relief well 2 and an auxiliary drainage system 3.
As shown in fig. 1, the drainage sand bedding layer 1 is laid between the tunnel bottom structural layer 11 and the tunnel bottom surrounding rock 12 in a full tunnel length.
As shown in fig. 1, 2 and 3, the automatic relief well 2 is arranged at intervals at positions adjacent to the cable grooves on two sides and vertically arranged at the bottom of the tunnel. The automatic pressure relief well 2 consists of a well wall 4, an outsourcing polymer reverse filtering material 5, permeable gravel 6 and pressure relief drainage holes 7, wherein the well wall 4 consists of an upper section and a lower section, the upper section is reserved by a formwork when pouring tunnel bottom concrete, and the lower section is constructed by manually excavating tunnel bottom surrounding rocks. The well wall 4 is filled with permeable gravel 6, the upper end of the well wall 4 is provided with a pressure relief drain hole 7, and the well wall 4 is externally coated with a polymer reverse filtering material 5.
The polymer reverse filtration material 5 has the following functions: as shown in fig. 1, 2 and 3, the polymer reverse filtering material 5 is wrapped at the lower section of the pressure relief well 4, and the underground water in the surrounding rock at the tunnel bottom enters the permeable gravel 6 after being filtered by the polymer reverse filtering material 5, so as to prevent the sediment from blocking the automatic pressure relief well 2.
The function of the permeable gravel 6 is: as shown in fig. 1, 2, and 3, permeable gravel 6 is disposed in the automatic relief well 2, secondarily filters groundwater and serves as a vertical drainage channel, preventing sediment from entering the auxiliary drainage system of the road surface.
As shown in fig. 1, 2 and 3, the auxiliary drainage system 3 is provided on the automatic relief well 2, and is disposed on the side of the cable trough outer standing wall. The auxiliary drainage system 3 consists of a side ditch cover plate 8, a side ditch 9 and a side ditch bottom 10. The side ditch 9 is arranged on the automatic pressure relief well 2, the bottom of the side ditch 9 is provided with a side ditch paving bottom 10, and the upper part of the side ditch 9 is provided with a side ditch cover plate 8.
As shown in fig. 4, when the ground water level of the tunnel bottom rises and the central ditch cannot drain normally due to various reasons, the ground water enters the automatic pressure relief wells 2 at two sides through the horizontal drainage sand cushion layers 1 of the tunnel bottom, and the water level in the automatic pressure relief wells continuously rises along with the increase of the ground water pressure until the ground water of the tunnel bottom is drained into the drainage system 3 of the road surface through the pressure relief drainage holes 7.
The structure and the system skillfully utilize the principle of automatic balance of water pressure, realize the controlled discharge of the underground water of the tunnel, effectively prevent pavement subsidence caused by excessive discharge of the underground water, pavement bulge caused by unsmooth discharge of the underground water and deformation and cracking of the tunnel structure, and realize one-time investment and permanent solving of various diseases such as pavement seepage, structural cracking and the like caused by failure of a tunnel bottom longitudinal drainage system. The utility model is completed in the tunnel construction period, has simple structure and convenient construction, adopts conventional materials as construction materials, has good economy and flexible application scene, can be suitable for tunnels with stable groundwater level and tunnels with unstable groundwater level, and can also be suitable for tunnels constructed in water permeable stratum and water impermeable stratum. In addition, after the tunnel is built and operated, special maintenance is not needed for the structure and the auxiliary drainage system, so that the tunnel operation and maintenance cost can be saved, and the method has good application and popularization prospects.
The basic principles of the present application have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not limiting, and these advantages, benefits, effects, etc. are not to be considered as necessarily possessed by the various embodiments of the present application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not intended to be limited to the details disclosed herein as such.
The block diagrams of the devices, apparatuses, devices, systems referred to in this application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.
It is also noted that in the apparatus, devices and methods of the present application, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent to the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description of the preferred embodiments of the present utility model is not intended to limit the utility model to the precise form disclosed, and any modifications, equivalents, and alternatives falling within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.
Claims (2)
1. An automatic pressure relief drainage system for a tunnel, comprising:
the drainage sand cushion layer is paved between the tunnel bottom structural layer and the tunnel bottom surrounding rock in a full tunnel through length manner; and
the automatic pressure relief wells are arranged at equal intervals at positions of two sides close to the cable grooves and are vertically arranged at the bottom of the tunnel;
the automatic pressure relief well comprises a well wall, permeable gravel and pressure relief drainage holes;
the well wall is filled with permeable gravel, and the upper end of the well wall is provided with a pressure relief drain hole; and
the auxiliary drainage system is arranged on the automatic pressure relief well and is arranged on one side of the outer vertical wall of the cable groove;
the auxiliary drainage system comprises a side ditch cover plate, a side ditch and a side ditch bottom paving device;
the side ditch is arranged on the automatic pressure relief well, the bottom of the side ditch is provided with a side ditch bottom laying plate, and the upper part of the side ditch is provided with a side ditch cover plate.
2. The automatic pressure relief and drainage system for tunnels according to claim 1, wherein: the well wall is coated with a polymer reverse filtering material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322276282.5U CN220687399U (en) | 2023-08-23 | 2023-08-23 | Automatic pressure release drainage system in tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322276282.5U CN220687399U (en) | 2023-08-23 | 2023-08-23 | Automatic pressure release drainage system in tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220687399U true CN220687399U (en) | 2024-03-29 |
Family
ID=90371369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322276282.5U Active CN220687399U (en) | 2023-08-23 | 2023-08-23 | Automatic pressure release drainage system in tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220687399U (en) |
-
2023
- 2023-08-23 CN CN202322276282.5U patent/CN220687399U/en active Active
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