CN112983539A - Tunnel surrounding rock drainage support structure and construction method - Google Patents
Tunnel surrounding rock drainage support structure and construction method Download PDFInfo
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- CN112983539A CN112983539A CN202110416625.6A CN202110416625A CN112983539A CN 112983539 A CN112983539 A CN 112983539A CN 202110416625 A CN202110416625 A CN 202110416625A CN 112983539 A CN112983539 A CN 112983539A
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- 239000011435 rock Substances 0.000 title claims abstract description 74
- 238000010276 construction Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000004831 Hot glue Substances 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
-
- 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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tunnel surrounding rock drainage support structure which comprises a tunnel body and a drainage system, wherein the drainage system comprises a surrounding rock crack groove, the surrounding rock crack groove surrounds a surrounding rock crack for a circle, a drainage collection plate is arranged in the surrounding rock crack groove, the top of the drainage collection plate is covered by a sealing plate to form a collection box, a drainage hole is arranged at the lowest end of the collection box, a drainage pipe is arranged on the drainage hole, and the lower end of the drainage pipe extends into the drainage pipe; the collecting box is fixed on the supporting arch surface of the drainage system through a bracket. The invention can completely collect water leakage at any position of the whole surrounding rock crack, fully drain water, and avoid long-time water accumulation, thereby overcoming the defects of the prior art.
Description
Technical Field
The invention belongs to the technical field of tunnel drainage, and particularly relates to a tunnel surrounding rock drainage support structure and a construction method.
Background
The tunnel drainage is an indispensable component part of the overall design of the tunnel, and whether the design is reasonable or not can generate great influence on the safety and normal operation of the tunnel. Along with the construction of a large number of tunnels in China, the water prevention and drainage problem is an important problem in the construction stage and is an important reason for causing various diseases in the operation stage, the understanding and the research on the water prevention and drainage problem of the tunnels are required to be enhanced, the design and construction work of a water prevention and drainage system is well done, and the water prevention, the reliability and the smooth drainage are ensured.
The prior art CN110566273A discloses a drainage system for treating tunnel surrounding rock fissure water, which is characterized in that a surrounding rock drainage pipe is inserted in the development direction of the surrounding rock fissure, the method can achieve a certain drainage effect, but as is known, the surrounding rock fissure is winding, one surrounding rock drainage pipe is difficult to completely fit with the surrounding rock fissure, the problem that groundwater seeps out from the gap between the surrounding rock fissure and the drainage pipe is easily caused, and a good drainage effect is difficult to achieve. In addition, the water seepage position of one surrounding rock crack can be multi-point, and the water seepage of all points can not be collected easily by inserting one surrounding rock water drainage pipe, so that the water leakage condition can be serious.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a tunnel surrounding rock drainage support structure which comprises a tunnel body and a drainage system, wherein the tunnel body comprises a lining vault and a roadbed structure, the outer side of the lining vault is provided with a drainage system supporting arch surface, the middle part of the roadbed structure is provided with a road surface, two sides of the road surface are protruded to form a pedestrian maintenance channel surface, the interior of the road surface is provided with a drainage channel along the extending direction of the road surface, a section of gathering channel is arranged at a certain interval inside the road surface, the section of gathering channel is divided into two channels arranged at two sides of the drainage channel, a drainage outlet is arranged in the pedestrian maintenance channel surface, one end of the gathering channel is communicated with the drainage channel, the other end of the gathering channel is communicated with the drainage outlet, and the bottom of the lining vault; the drainage system comprises a surrounding rock crack groove, the surrounding rock crack groove surrounds a surrounding rock crack for a circle, a drainage collection plate is installed in the surrounding rock crack groove, the top of the drainage collection plate is covered by a sealing plate to form a collection box, a drainage hole is formed at the lowest end of the collection box, a drainage pipe is installed on the drainage hole, and the lower end of the drainage pipe extends into the drainage pipe; the collecting box is fixed on the supporting arch surface of the drainage system through a bracket.
Furthermore, a plurality of drainage ditches are arranged on two sides of the road surface at certain intervals, and the lower ends of the drainage ditches are communicated with the collecting channel.
Further, the drain outlet top and the top of escape canal all are equipped with the well lid.
Furthermore, a filter screen is arranged in the drain pipe.
Furthermore, the depth of the surrounding rock fracture groove is 5-10 cm, and the width of the surrounding rock fracture groove is 1-2 cm.
The invention also discloses a construction method of the tunnel surrounding rock drainage support structure, which comprises the following steps:
1) carrying out geological survey on an excavated surface after a tunnel is excavated and formed, determining the position of a surrounding rock crack and the surface extension condition of the whole crack, and cutting the periphery of the surrounding rock crack flat;
2) drilling the surrounding rock fracture groove along the circumference of the surrounding rock fracture, wherein the surrounding rock fracture groove is formed in a ring structure by connecting a plurality of line segments end to end;
3) cutting the plastic plates with the thickness larger than the width of the surrounding rock fracture grooves into a plurality of plastic plates with corresponding lengths according to the lengths of a plurality of line sections forming the surrounding rock fracture grooves, correspondingly inserting the plastic plates into the corresponding line sections according to the lengths of the line sections to form interference fit, and welding gaps between the adjacent plastic plates through hot melt adhesives to form a drainage collection plate; a plastic plate positioned at the bottommost part of the drainage collecting plate is provided with a drainage hole in advance;
4) covering a plastic plate on the top of the drainage collection plate surrounded by the plastic plate and welding the plastic plate with hot melt adhesive to form a collection box; the drain pipe is arranged on the drain hole, and the lower end of the drain pipe extends into the water outlet pipe;
5) and constructing the lining vault and a roadbed structure, constructing the outer side of the lining vault and constructing a drainage system supporting arch surface, and fixing the collecting box on the drainage system supporting arch surface through a bracket.
Further, connect through the block structure between the adjacent plastic slab, then rethread hot melt adhesive seam, block structure one side is the fixture block, and one side is the draw-in groove, and fixture block and draw-in groove are located two adjacent plastic slabs respectively, the block structure can make the contained angle rotation between the adjacent plastic slab change.
Therefore, the beneficial effects of the invention are as follows: the invention can completely collect water leakage at any position of the whole surrounding rock crack, fully drain water, and avoid long-time water accumulation, thereby overcoming the defects of the prior art.
Drawings
FIG. 1 is a schematic cross-sectional view of a tunnel;
FIG. 2 is a schematic diagram of a structure in which a collection box surrounds a fracture of surrounding rock;
fig. 3 is a schematic structural view of the connection between the adjacent plastic boards by the snap structure.
Detailed Description
The following examples are given for the purpose of illustration.
Examples
As shown in fig. 1 and 2, a drainage support structure for surrounding rocks of a tunnel comprises a tunnel body and a drainage system. The tunnel body comprises a lining vault 1 and a roadbed structure, and a drainage system supporting arch surface 2 is arranged on the outer side of the lining vault 1. The roadbed structure middle part is equipped with road surface 3, the protruding pedestrian that forms in both sides of road surface 3 overhauls passageway face 4 for pavement when artifical the maintenance. And a drainage channel 5 is arranged in the road surface along the extending direction of the road surface, the drainage channel 5 penetrates through the whole tunnel, the middle part is higher, and the two sides are lower, so that the leaked water is drained out of the tunnel. The pavement interior is provided with a section of collecting channel 6 at a certain distance, the section of collecting channel 6 is two channels respectively arranged at two sides of the drainage channel, a water outlet 7 is arranged in the pavement surface of the pedestrian maintenance channel, one end of the collecting channel 6 is communicated with the drainage channel 5, and the other end of the collecting channel 6 is communicated with the water outlet 7 and is used for discharging water in the collecting channel 6 into the drainage channel 5. And a water outlet pipe 8 communicated with the collecting channel is arranged at the bottom of the lining vault. The both sides interval certain distance of road surface 3 is equipped with a plurality of escape canals 14, the lower extreme intercommunication in escape canal 14 collect passageway 6 for in 14 discharge entering in the entering of escape canal collect passageway 6 with surface gathered water, the road surface design becomes the form that the high both sides in middle part are low, makes things convenient for ponding to collect to both sides and gets into in the escape canal 14. And well covers 15 are arranged above the water outlet 7 and the drainage ditch 14. The drainage system comprises a surrounding rock fracture groove 9, the surrounding rock fracture groove 9 surrounds a surrounding rock fracture for 10 circles, the depth of the surrounding rock fracture groove is 6cm, and the width of the surrounding rock fracture groove is 2 cm. Install drainage collection board 11 in surrounding rock crack recess 9, drainage collection board 11 top closes through the closing plate lid and forms and collects the box, the lower extreme of collecting the box begins to have the wash port, install drain pipe 13 on the wash port, be equipped with the filter screen in the drain pipe 13, prevent to use for a long time and cause silt to get into drainage channel 5 and cause drainage channel 5 to block up. The lower end of the water outlet pipe 13 extends into the water outlet pipe 8; the collecting box is fixed on the supporting arch surface of the drainage system through a bracket.
Seepage water flowing out of the surrounding rock cracks flows into the collecting box. The drainage collection plate 11 of the collection box surrounds the whole surrounding rock crack, so that the drainage system can completely collect water leakage at any position of the whole surrounding rock crack, the drainage is sufficient, and the condition of long-time water accumulation is not easy to cause. The drained water enters a drain pipe 13 through a drain hole at the bottom of the collecting box, then enters a water outlet pipe 8, and finally is gathered in a drain channel 5 through a gathering channel 6 to be drained out of the tunnel.
The construction method of the tunnel surrounding rock drainage support structure comprises the following steps:
1) after a tunnel is excavated and formed, geological exploration is carried out on an excavated surface, the position of a surrounding rock crack and the surface extension condition of the whole crack are determined, and the periphery of the surrounding rock crack is cut flat, so that the tunnel is conveniently drilled to form a groove;
2) drilling the surrounding rock fracture groove along the circumference of the surrounding rock fracture, wherein the surrounding rock fracture groove is formed in a ring structure by connecting a plurality of line segments end to end; the line segment structure is selected instead of the curve structure, so that the plastic plate is convenient to mount, and if the plastic plate is punched into a curve, the plastic plate needs to be specially customized according to the radian of the curve, so that the plastic plate is very inconvenient;
3) cutting the plastic plates with the thickness larger than the width of the surrounding rock fracture grooves into a plurality of plastic plates with corresponding lengths according to the lengths of a plurality of line sections forming the surrounding rock fracture grooves, correspondingly inserting the plastic plates into the corresponding line sections according to the lengths of the line sections to form interference fit, and welding gaps between the adjacent plastic plates through hot melt adhesives to form a drainage collection plate; as another scheme for optimization, the adjacent plastic plates are connected through a clamping structure and then welded through hot melt adhesive, a clamping block 16 is arranged on one side of the clamping structure, a clamping groove 17 is arranged on one side of the clamping structure, the clamping block 16 and the clamping groove 17 are respectively located on the two adjacent plastic plates, and the clamping structure can enable the included angle between the adjacent plastic plates to be changed in a rotating mode, as shown in fig. 3. The optimized scheme is to improve the sealing performance of the place where the joint of the plastic plates is positioned in the groove surrounding the cracks of the surrounding rock and cannot be welded, and prevent the micro leakage of water. A plastic plate positioned at the bottommost part of the drainage collecting plate is provided with a drainage hole in advance;
4) covering a plastic plate on the top of the drainage collection plate surrounded by the plastic plate and welding the plastic plate with hot melt adhesive to form a collection box; the drain pipe is arranged on the drain hole, and the lower end of the drain pipe extends into the water outlet pipe;
5) and constructing the lining vault and a roadbed structure, constructing the outer side of the lining vault and constructing a drainage system supporting arch surface, and fixing the collecting box on the drainage system supporting arch surface through a bracket.
The technical solutions provided by the present invention are described in detail above, and for those skilled in the art, the ideas according to the embodiments of the present invention may be changed in the specific implementation manners and the application ranges, and in summary, the content of the present description should not be construed as limiting the present invention.
Claims (7)
1. A tunnel surrounding rock drainage support structure is characterized by comprising a tunnel body and a drainage system, wherein the tunnel body comprises a lining vault and a roadbed structure, the outer side of the lining vault is provided with a drainage system supporting arch surface, the middle part of the roadbed structure is provided with a road surface, two sides of the road surface are protruded to form a pedestrian maintenance channel surface, a drainage channel is arranged in the road surface along the extending direction of the road surface, a section of collecting channel is arranged in the road surface at a certain interval, the section of collecting channel is divided into two sections arranged on two sides of the drainage channel, a water outlet is arranged in the pedestrian maintenance channel surface, one end of the collecting channel is communicated with the drainage channel, the other end of the collecting channel is communicated with the water outlet, and the bottom of the lining vault is provided with a water outlet pipe communicated; the drainage system comprises a surrounding rock crack groove, the surrounding rock crack groove surrounds a surrounding rock crack for a circle, a drainage collection plate is installed in the surrounding rock crack groove, the top of the drainage collection plate is covered by a sealing plate to form a collection box, a drainage hole is formed at the lowest end of the collection box, a drainage pipe is installed on the drainage hole, and the lower end of the drainage pipe extends into the drainage pipe; the collecting box is fixed on the supporting arch surface of the drainage system through a bracket.
2. The tunnel surrounding rock drainage support structure of claim 1, wherein a plurality of drainage ditches are arranged at intervals on two sides of the road surface, and the lower ends of the drainage ditches are communicated with the collecting channel.
3. The tunnel wall rock drainage support structure of claim 2, wherein a well cover is arranged above the drainage outlet and above the drainage ditch.
4. The tunnel wall rock drainage support structure of claim 3, wherein a filter screen is arranged in the drainage pipe.
5. The tunnel surrounding rock drainage support structure as claimed in claim 4, wherein the depth of the surrounding rock crack groove is 5-10 cm, and the width of the surrounding rock crack groove is 1-2 cm.
6. The construction method of a tunnel surrounding rock drainage support structure of claim 5, comprising the steps of:
1) carrying out geological survey on an excavated surface after a tunnel is excavated and formed, determining the position of a surrounding rock crack and the surface extension condition of the whole crack, and cutting the periphery of the surrounding rock crack flat;
2) drilling the surrounding rock fracture groove along the circumference of the surrounding rock fracture, wherein the surrounding rock fracture groove is formed in a ring structure by connecting a plurality of line segments end to end;
3) cutting the plastic plates with the thickness larger than the width of the surrounding rock fracture grooves into a plurality of plastic plates with corresponding lengths according to the lengths of a plurality of line sections forming the surrounding rock fracture grooves, correspondingly inserting the plastic plates into the corresponding line sections according to the lengths of the line sections to form interference fit, and welding gaps between the adjacent plastic plates through hot melt adhesives to form a drainage collection plate; a plastic plate positioned at the bottommost part of the drainage collecting plate is provided with a drainage hole in advance;
4) covering a plastic plate on the top of the drainage collection plate surrounded by the plastic plate and welding the plastic plate with hot melt adhesive to form a collection box; the drain pipe is arranged on the drain hole, and the lower end of the drain pipe extends into the water outlet pipe;
5) and constructing the lining vault and a roadbed structure, constructing the outer side of the lining vault and constructing a drainage system supporting arch surface, and fixing the collecting box on the drainage system supporting arch surface through a bracket.
7. The construction method of the tunnel surrounding rock drainage support structure according to claim 6, wherein the adjacent plastic plates are connected through a clamping structure and then welded together through hot melt adhesive, clamping blocks are arranged on one side of the clamping structure, clamping grooves are arranged on one side of the clamping structure, the clamping blocks and the clamping grooves are respectively arranged on the two adjacent plastic plates, and the clamping structure can enable the included angle between the two adjacent plastic plates to be changed in a rotating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416625.6A CN112983539B (en) | 2021-04-19 | 2021-04-19 | Tunnel surrounding rock drainage support structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110416625.6A CN112983539B (en) | 2021-04-19 | 2021-04-19 | Tunnel surrounding rock drainage support structure and construction method |
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| CN112983539A true CN112983539A (en) | 2021-06-18 |
| CN112983539B CN112983539B (en) | 2023-08-29 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434175A (en) * | 2012-01-12 | 2012-05-02 | 中国市政工程西北设计研究院有限公司 | Tunnel lining self waterproof drainage system |
| CN103306299A (en) * | 2013-06-19 | 2013-09-18 | 泰兴市第一建筑安装工程有限公司 | Comprehensive waterproof and drainage construction method of basement exterior wall of super-high-rise building |
| CN104806272A (en) * | 2015-04-15 | 2015-07-29 | 西安科技大学 | Tunnel diversion composite type waterproof and drainage system as well as construction method and use method thereof |
| CN110513130A (en) * | 2019-09-27 | 2019-11-29 | 长安大学 | A kind of tunnel waterproof and water drainage system |
| CN110566273A (en) * | 2019-09-17 | 2019-12-13 | 中国十九冶集团有限公司 | Drainage system and drainage method for treating tunnel surrounding rock fracture water |
-
2021
- 2021-04-19 CN CN202110416625.6A patent/CN112983539B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434175A (en) * | 2012-01-12 | 2012-05-02 | 中国市政工程西北设计研究院有限公司 | Tunnel lining self waterproof drainage system |
| CN103306299A (en) * | 2013-06-19 | 2013-09-18 | 泰兴市第一建筑安装工程有限公司 | Comprehensive waterproof and drainage construction method of basement exterior wall of super-high-rise building |
| CN104806272A (en) * | 2015-04-15 | 2015-07-29 | 西安科技大学 | Tunnel diversion composite type waterproof and drainage system as well as construction method and use method thereof |
| CN110566273A (en) * | 2019-09-17 | 2019-12-13 | 中国十九冶集团有限公司 | Drainage system and drainage method for treating tunnel surrounding rock fracture water |
| CN110513130A (en) * | 2019-09-27 | 2019-11-29 | 长安大学 | A kind of tunnel waterproof and water drainage system |
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| CN112983539B (en) | 2023-08-29 |
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