CN109538293B - Replacement treatment structure and method for water inflow channel of underground cavern - Google Patents
Replacement treatment structure and method for water inflow channel of underground cavern Download PDFInfo
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- CN109538293B CN109538293B CN201811627230.5A CN201811627230A CN109538293B CN 109538293 B CN109538293 B CN 109538293B CN 201811627230 A CN201811627230 A CN 201811627230A CN 109538293 B CN109538293 B CN 109538293B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 136
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000007596 consolidation process Methods 0.000 claims abstract description 26
- 239000004576 sand Substances 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 10
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 6
- 230000001052 transient effect Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 239000013049 sediment Substances 0.000 claims description 4
- 238000009991 scouring Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Sewage (AREA)
Abstract
The invention discloses a displacement treatment structure and a displacement treatment method for a water burst channel of an underground cavity, wherein the treatment structure comprises a sand basin formed by expanding and digging in a karst pipeline in the water inflow direction, and a manual culvert is arranged behind the sand basin and is communicated with a pipeline in the water drainage direction; the karst pipeline is communicated with a drainage ditch in the underground cavity space to form a controllable common drainage system; meanwhile, a connecting channel is arranged between the artificial culvert and the drainage ditch, and a bidirectional water quantity control valve is arranged at the channel opening of the connecting channel. After high-pressure large-flow water burst of the underground cavity is treated by the technical scheme of the invention, the water burst locally changes the original channel and is discharged outside the cavity through the artificial culvert; the anti-seepage consolidation ring around the water inrush point bears external water pressure generated by the rise of the underground water level and plays a role in anti-seepage; the radial drainage holes are used for pressure relief and drainage, and the cavity can ensure drying stability. The problem of high-pressure large-flow water burst of the underground cavity is solved with short construction period and low investment.
Description
Technical Field
The invention belongs to the field of underground engineering technology and geology, and relates to a high-pressure high-flow concentrated water gushing treatment method suitable for underground cavern karst pipelines, fault structures and the like of tunnels (holes) and the like.
Background
With the perfection of the traffic network and the development of western hydropower resources in China, the construction of underground caverns such as tunnels (holes) is transferred to western regions with high topography and complex geological conditions, and the engineering of the underground caverns such as the tunnels (holes) in China has the characteristics of long line, large burial depth, high ground stress, high water pressure and rich groundwater supply.
The karst pipeline and fault structure of the underground cavern such as the tunnel (cave) gushes water, if no measures are taken for treatment, the construction safety and the progress are seriously affected, and the operation and the surrounding environment of the engineering in future are extremely adversely affected.
According to the water inflow flow and pressure, the water inflow can be divided into a high-pressure large-flow type, a high-pressure small-flow type, a low-pressure large-flow type and the like. At present, the control of water burst of an engineering tunnel mainly prepares a targeted control strategy according to the characteristics of water burst. For small-flow water burst, a limited discharge or consolidation, seepage-proofing and grouting mode is adopted for one-time plugging; for large-flow water burst, the diversion pressure relief, grouting blocking or water draining hole treatment is adopted.
Certain defects exist in the treatment mode of high-pressure large-flow water burst, such as partial grouting blocking is easy to cause water flow movement, water outlet of other hole sections or water pressure increase are caused, and if the full hole section blocking is too high in cost; the pressure of drainage system in the hole is increased by diversion, pressure relief and drainage in the hole. Although the water draining hole scheme can well solve the water burst problem, the water draining hole scheme for the deep buried tunnel has the characteristic of long required line length, and causes the defects of long construction period and high construction cost.
Therefore, aiming at the working condition of high-pressure large-flow water burst of the existing deep buried tunnel, a new scheme is adopted according to the characteristics of the high-pressure large-flow water burst, so that the water burst problem is solved with short construction period and low investment.
Disclosure of Invention
The invention aims to solve the problem of high-pressure large-flow centralized water burst of underground cavern karst pipelines, fault structures and the like such as tunnels (holes) and the like, maintain smooth natural water flow, fully utilize drainage and depressurization of a cavern drainage system, utilize a surrounding rock seepage-proofing consolidation ring to bear transient external water pressure, ensure stable and dry structure in the underground cavern and ensure long-term operation safety and reliability of the underground cavern. Plugging a natural pipeline in the range of the tunnel, and replacing the original water channel by using the artificial culvert to ensure the smoothness of the natural runoff channel; setting up a sand setting tank to prevent the channel from being silted up; a waterproof access door is arranged, sediment can be cleaned in the channel, and the channel can be maintained; the culvert pipe is connected with a tunnel (hole) drainage ditch through a two-way gate valve, and the defect of the drainage capacity of the natural drainage pipeline can be supplemented by using a tunnel (hole) drainage system; performing seepage-proofing consolidation grouting on surrounding rocks of a tunnel (hole) to form an seepage-proofing consolidation ring which bears external water pressure generated by transient high water level congestion caused by insufficient drainage capacity; the drainage holes are arranged in the fixing ring, so that a small amount of water flow in the fixing ring is discharged, and drying and structural safety in the hole are ensured.
Underground cavern excavation such as tunnels (holes) often encounters concentrated high-pressure large-flow water gushes, and the underground cavern excavation can be a hidden river system pipeline exposing karst areas or a large-scale fault structure. The pipeline or fault of water burst is a groundwater system with relatively stable supply, runoff and drainage under natural conditions, and the underground cavity excavation can damage the runoff channel if encountering the pipeline or fault, thereby influencing the water drainage capacity. The rock mass of the pipeline or the fault area is broken, and a loose ring is formed after the underground cavity is excavated, so that the impervious capacity and the stability level of surrounding rock are further reduced. The underground water pressure of the pipeline or the fault water-gushing area is unbalanced, the possible water quantity in the dead period is smaller, the underground water level is rapidly increased due to limited drainage capacity after heavy rain, the external water pressure is increased, the periphery of concentrated water gushing is also used for water outflow, the stability of surrounding rock of a cavity and the safety of a lining structure are influenced, and the cavity cannot run safely and stably.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a displacement treatment structure of a water burst channel of an underground cavity comprises a sand setting tank formed by expanding and digging in a karst pipeline in the water inflow direction, wherein an artificial culvert is arranged behind the sand setting tank and is communicated with a pipeline in the water discharge direction; the karst pipeline is communicated with a drainage ditch in the underground cavity space to form a controllable common drainage system; meanwhile, a connecting channel is arranged between the artificial culvert and the drainage ditch, and a bidirectional water quantity control valve is arranged at the channel opening of the connecting channel.
Further, the pipe section which influences the stability of the cavity on the karst pipeline is plugged to form a plugging body.
Furthermore, an overhaul waterproof door is arranged at a passage opening of the underground cavity space entering the grit chamber and is used as a cleaning and overhaul passage of the grit chamber and the artificial culvert.
Furthermore, the anti-seepage consolidation grouting is carried out in the underground cavity space by arranging anti-seepage consolidation grouting holes along the radial direction of the cavity, and an anti-seepage consolidation ring is formed in the surrounding rock body.
Further, drainage holes are arranged in the anti-seepage fastening ring along the radial direction, and water in each drainage hole is uniformly led into the drainage ditch.
The displacement treatment method of the underground cavity water inflow channel based on the structural design comprises the following steps:
step 1, determining karst pipeline distribution and scale of water gushing in and around a space hole of an underground cavity, and flowing direction of underground water;
step 2, adopting measures to guide water in a temporary construction period or adopting temporary plugging measures to establish a working surface;
step 3, enlarging and digging a sand basin in the rock mass in the water inflow direction of the karst pipeline, and making a lining of the sand basin so as to meet the requirements of internal and external water pressure and anti-scouring capability; during the operation of the grotto, removing sediment in the grit chamber at regular intervals;
step 4, newly building an artificial culvert adapting to the natural drainage capacity of the original pipeline after the grit chamber, wherein the artificial culvert is communicated with the pipeline in the drainage direction; replacing the original water channel by using an artificial culvert to maintain the smoothness of the natural runoff channel;
step 5, communicating the karst pipeline with a drainage ditch in the underground cavity space to form a controllable common drainage system; constructing a connecting channel between the artificial culvert and a drainage ditch in the underground cavity space, and arranging a bidirectional water quantity control valve at a channel opening; when the water passing capability in the karst pipeline is excessive, controlling the water in the drainage ditch to drain through the original pipeline system, and reducing the operation cost of the grotto; the water quantity in the original karst pipeline exceeds the self drainage capacity, and part of the water quantity is drained by utilizing the drainage ditch; controlling the amount of water entering the drainage ditch from the artificial culvert when the amount of water in the karst pipeline exceeds the drainage capacity of the drainage ditch in the underground cavity;
step 6, plugging an original part of karst pipeline which influences the stability of the cavity to form a plugging body; installing an overhaul waterproof door at a passage opening of the underground cavity space entering the grit chamber as a cleaning and overhaul passage of the grit chamber and the artificial culvert;
step 7, performing seepage-proofing consolidation grouting in the underground cavity space through seepage-proofing consolidation grouting holes radially arranged along the cavity, forming a seepage-proofing consolidation ring with enough thickness in the surrounding rock body, bearing transient external water pressure generated by the rise of the underground water level, and avoiding the external water pressure from acting on the internal structural body of the underground cavity; the anti-seepage fixing rings are required to extend to be long enough along the axial direction of the underground cavity on the two sides of the original karst pipeline;
and 8, arranging drainage holes in the anti-seepage fastening ring along the radial direction, leading water flow led out of each drainage hole to be uniformly led into a drainage ditch, reducing the external water pressure in the anti-seepage fastening ring, and ensuring the drying stability in the hole.
Compared with the prior art, the invention has the beneficial effects that: after high-pressure large-flow water burst of the underground cavity is treated by the technical scheme of the invention, the water burst locally changes the original channel and is discharged outside the cavity through the artificial culvert; the anti-seepage consolidation ring around the water inrush point bears external water pressure generated by the rise of the underground water level and plays a role in anti-seepage; the radial drainage holes are used for pressure relief and drainage, and the cavity can ensure drying stability. The problem of high-pressure large-flow water burst of the underground cavity is solved with short construction period and low investment.
Drawings
FIG. 1 is a schematic view of an underground cavern water surge plane;
FIG. 2 is a schematic view of a water burst profile of an underground cavern;
FIG. 3 is a schematic cross-sectional view of the water treatment of an underground cavern according to the present invention.
Reference numerals illustrate: 1-underground cavity space, 2-drainage canal, 3-karst pipeline, 4-concentrated water burst, 5-overhaul water-proof door, 6-grit chamber, 7-artificial culvert, 8-connecting channel, 9-two-way water quantity control valve, 10-raw karst pipeline plugging body, 11-seepage-proofing consolidation grouting hole, 12-seepage-proofing consolidation ring and 13-drainage hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
It is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without creative efforts based on the embodiments in the present invention are within the scope of the present invention.
Example 1:
referring first to fig. 1 and 2, fig. 1 and 2 show a state of water gushing in an underground cavern in which concentrated water gushing 4 occurs at a position where a karst pipe 3 passes through a underground cavern space 1, the underground cavern space 1 is provided with a drain ditch 2, but water discharged from the concentrated water gushing 4 cannot be directly discharged into the drain ditch 2.
Referring to fig. 3, fig. 3 is a structure processed by the technical scheme of the present invention, it can be seen that the processing structure comprises a grit chamber 6 formed by expanding and digging in a rock mass in the water inflow direction of a karst pipeline 3, the grit chamber 6 is positioned below a concentrated water inflow 4 in fig. 2, and a manual culvert 7 is arranged behind the grit chamber 6, so that the manual culvert 7 positioned at the bottom of an underground cavity space 1 replaces the pipe section of the original karst pipeline 3 penetrating through the underground cavity space 1, and the manual culvert 7 is communicated with the karst pipeline 3 in the water drainage direction, namely the karst pipeline 3 at the right part in fig. 3; meanwhile, a connecting channel 8 is arranged between the artificial culvert 7 and the drainage ditch 2, and a bidirectional water quantity control valve 9 is arranged at the channel port of the connecting channel 8, so that the connection is actually equal to the connection of the karst pipeline 3 and the drainage ditch 2 in the underground cavity space 1, and a controllable common drainage system is formed.
In addition, the pipe section which influences the stability of the cavity on the karst pipeline 3 is plugged to form a plugging body 10, so that the original karst pipeline 3 is located at the pipe section which is intersected with the underground cavity space 1, and the karst pipeline 3 is redirected by the artificial culvert 7 to pass through the lower part of the underground cavity space 1.
Furthermore, an overhaul waterproof door 5 is arranged at the passage opening of the underground cavity space 1 into the grit chamber 6 and is used as a cleaning and overhaul passage of the grit chamber 6 and the artificial culvert 7. The anti-seepage consolidation grouting is carried out in the underground cavity space 1 by arranging anti-seepage consolidation grouting holes 11 along the radial direction of the cavity, and an anti-seepage consolidation ring 12 is formed in the surrounding rock mass. The water discharge holes 13 are arranged in the anti-seepage fastening ring 12 along the radial direction, and water in each water discharge hole 13 is uniformly led into the water discharge ditch 2.
The specific implementation is carried out according to the following steps:
step 1, finding out distribution and scale of karst pipelines 3 of water gushes in and around a hole of an underground cavity space 1, and flowing direction of underground water;
step 2, adopting measures such as pumping drainage and the like to guide water in a temporary construction period, or adopting temporary plugging measures to establish a working surface;
step 3, enlarging and digging a sand setting tank 6 in the rock mass in the water inflow direction of the karst pipeline 3, and making a lining of the sand setting tank 6 so as to meet the requirements of internal and external water pressure and anti-scouring capability; during the operation of the grotto, sediment in the grit chamber 6 is removed periodically;
step 4, newly building an artificial culvert 7 adapting to the natural drainage capacity of the original pipeline after the grit chamber 6, wherein the artificial culvert 7 is communicated with the karst pipeline 3 in the drainage direction; the artificial culvert 7 is utilized to replace a water passing channel which is formed by crossing the original karst pipeline 3 and the underground cavity space 1, so that the smoothness of a natural runoff channel is maintained;
step 5, communicating the karst pipeline 3 with the drainage ditch 2 in the underground cavity space 1 to form a controllable common drainage system; constructing a connecting channel 8 between the artificial culvert 7 and the drainage ditch 2 in the underground cavity space 1, and arranging a bidirectional water quantity control valve 9 at the channel port; when the water passing capability in the karst pipeline 3 is excessive, controlling the water in the drainage ditch 2 to be discharged through the original karst pipeline 3, and reducing the running cost of the grotto; the water quantity in the original karst pipeline 3 exceeds the self drainage capacity, and part of the water quantity is drained by utilizing the drainage canal 2; controlling the amount of water entering the drain ditch 2 from the artificial culvert 7 when the amount of water in the karst pipeline 3 exceeds the drainage capacity of the drain ditch 2 in the underground cavity;
step 6, plugging an original part of karst pipeline 3 affecting the stability of a cavity to form a plugging body 10; an overhaul waterproof door 5 is arranged at a passage opening of the underground cavity space 1 entering the grit chamber 6 and is used as a cleaning and overhaul passage of the grit chamber 6 and the artificial culvert 7;
step 7, performing seepage-proofing consolidation grouting in the underground cavity space 1 through seepage-proofing consolidation grouting holes 11 arranged along the radial direction of the cavity, forming a seepage-proofing consolidation ring 12 with enough thickness in the surrounding rock body, bearing transient external water pressure generated by the rise of the underground water level, and avoiding the external water pressure from acting on the internal structural body of the underground cavity; the anti-seepage fastening rings 12 need to extend long enough along the axial direction of the underground cavity on the two sides of the original karst pipeline 3;
and 8, arranging drain holes 13 in the anti-seepage fastening ring 12 along the radial direction, leading out water flow from each drain hole 13 to be uniformly led into the drain ditch 2, reducing the external water pressure in the anti-seepage fastening ring 12, and ensuring the drying stability in the hole.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (4)
1. The utility model provides a replacement processing structure of water channel is gushed to underground cavern which characterized in that: the device comprises a sand setting tank (6) formed by expanding and digging in a karst pipeline (3) in the water coming direction rock body, wherein a manual culvert (7) is arranged behind the sand setting tank (6), and the manual culvert (7) is communicated with the pipeline in the water draining direction; the karst pipeline (3) is communicated with a drainage ditch (2) in the underground cavity space (1) to form a controllable common drainage system; meanwhile, a connecting channel (8) is arranged between the artificial culvert (7) and the drain ditch (2), and a bidirectional water quantity control valve (9) is arranged at the channel port of the connecting channel (8); plugging a pipe section which influences the stability of a cavity on a karst pipeline (3) to form a plugging body (10); an overhaul waterproof door (5) is arranged at a passage opening of the underground cavity space (1) entering the grit chamber (6) and is used as a cleaning and overhaul passage of the grit chamber (6) and the artificial culvert (7); the grit chamber (6) is positioned below the concentrated water gushing (4).
2. The replacement processing structure for an underground cavern water supply passage according to claim 1, wherein: and (3) performing seepage-proofing consolidation grouting in the underground cavity space (1) by arranging seepage-proofing consolidation grouting holes (11) along the radial direction of the cavity, and forming a seepage-proofing consolidation ring (12) in the surrounding rock mass.
3. The replacement processing structure for an underground cavern water supply passage according to claim 1, wherein: the anti-seepage fastening ring (12) is provided with drainage holes (13) along the radial direction, and water in each drainage hole (13) is uniformly led into the drainage ditch (2).
4. The displacement treatment method for the water burst channel of the underground cavity is characterized by comprising the following steps of:
step 1, finding out distribution and scale of karst pipelines (3) of water gushing in and around a hole of an underground cavity space (1), and flowing direction of underground water;
step 2, adopting measures to guide water in a temporary construction period or adopting temporary plugging measures to establish a working surface;
step 3, enlarging and digging a sand setting tank (6) in the rock mass in the water inflow direction of the karst pipeline (3), and making a lining of the sand setting tank (6) so as to meet the requirements of internal and external water pressure and anti-scouring capability; during the operation of the grotto, the sediment in the grit chamber (6) is removed periodically; the grit chamber (6) is positioned below the concentrated water gushing (4);
step 4, newly building an artificial culvert (7) adapting to the natural drainage capacity of the original pipeline after the grit chamber (6), wherein the artificial culvert (7) is communicated with the pipeline in the drainage direction; the original water channel is replaced by the artificial culvert (7), so that the smoothness of the natural runoff channel is maintained;
step 5, communicating the karst pipeline (3) with a drainage ditch (2) in the underground cavity space (1) to form a controllable common drainage system; constructing a connecting channel (8) between the artificial culvert (7) and the drainage ditch (2) in the underground cavity space (1), and arranging a bidirectional water quantity control valve (9) at the channel opening; when the water passing capability in the karst pipeline (3) is excessive, controlling the water in the drainage ditch (2) to be discharged through the original pipeline system, and reducing the running cost of the grotto; the water quantity in the original karst pipeline (3) exceeds the self drainage capacity, and part of the water quantity is drained by the drainage ditch (2); when the water quantity in the karst pipeline (3) exceeds the drainage capacity of the drainage ditch (2) in the underground cavity, controlling the water quantity entering the drainage ditch (2) from the artificial culvert (7);
step 6, plugging an original part of karst pipeline (3) affecting the stability of the cavity to form a plugging body (10); an overhaul waterproof door (5) is arranged at a passage opening of the underground cavity space (1) entering the grit chamber (6) and is used as a cleaning and overhaul passage of the grit chamber (6) and the artificial culvert (7);
step 7, performing seepage-proofing consolidation grouting in the underground cavity space (1) through seepage-proofing consolidation grouting holes (11) radially arranged along the cavity, forming a seepage-proofing consolidation ring (12) with enough thickness in the surrounding rock body, bearing transient external water pressure generated by the rise of the underground water level, and avoiding the external water pressure acting on the internal structural body of the underground cavity; the anti-seepage fastening rings (12) are required to extend to be long enough along the axial direction of the underground cavity on the two sides of the original karst pipeline (3);
and 8, arranging drainage holes (13) in the anti-seepage fastening ring (12) along the radial direction, uniformly guiding and discharging water flow led out of each drainage hole (13) into the drainage ditch (2), reducing the external water pressure in the anti-seepage fastening ring (12), and ensuring the drying stability in the cavity.
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| CN201811627230.5A CN109538293B (en) | 2018-12-28 | 2018-12-28 | Replacement treatment structure and method for water inflow channel of underground cavern |
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| CN110486086B (en) * | 2019-07-16 | 2021-03-02 | 山东省交通规划设计院有限公司 | Tunnel lining leakage water drainage mechanism with compensation function and using method |
| CN113833524B (en) * | 2021-09-16 | 2024-02-13 | 中交一公局集团有限公司 | Double-hole box culvert for treating karst area tunnel water burst and construction method thereof |
| CN114737915B (en) * | 2022-04-19 | 2024-02-09 | 安徽理工大学 | Deep mining water burst rock burst control device |
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| CN207274723U (en) * | 2017-09-28 | 2018-04-27 | 中国建筑第八工程局有限公司 | Haul trolley |
| CN108468555A (en) * | 2017-12-27 | 2018-08-31 | 中铁二院工程集团有限责任公司 | A kind of lining cutting of single-track railway floor type and its drainage system construction that inspection shaft is set using refuge chamber |
| CN209398448U (en) * | 2018-12-28 | 2019-09-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Replacement processing structure of water burst channel of underground cavern |
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| CN109538293A (en) | 2019-03-29 |
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