CN113153309B - Tunnel construction method - Google Patents
Tunnel construction method Download PDFInfo
- Publication number
- CN113153309B CN113153309B CN202110256651.7A CN202110256651A CN113153309B CN 113153309 B CN113153309 B CN 113153309B CN 202110256651 A CN202110256651 A CN 202110256651A CN 113153309 B CN113153309 B CN 113153309B
- Authority
- CN
- China
- Prior art keywords
- water
- tunnel
- drainage
- grouting
- carried out
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention relates to a tunnel construction method, and belongs to the technical field of tunnel construction. The method comprises the following steps: when the main tunnel is constructed, after water is detected, a first small conduit tunnel is developed around the main tunnel, and water is drained through a first water drainage port; in the drainage process, judging the water pressure, if the water pressure is reduced to a set threshold value after the drainage setting time, continuing drainage, and after the water pressure meets the construction requirements, grouting to reinforce the surrounding rock; if the water pressure does not drop to the set threshold value after the set time of water drainage, a second small guide pipe tunnel is developed above the first small guide pipe tunnel when encountering a water guide fault, and water drainage operation is carried out through a second water drainage outlet; then grouting is carried out through the second water outlet, and a water guide fault between the first water outlet and the second water outlet is blocked; and after plugging, grouting to reinforce the surrounding rock, and allowing the TBM to pass through at a low speed. The invention provides an effective scheme for tunnel construction in the case of water guide fault, and tunnel construction can be safely carried out in a severe geological environment.
Description
Technical Field
The invention relates to a tunnel construction method, and belongs to the technical field of tunnel construction.
Background
The full face Tunnel Boring Machine (TBM) includes a hard rock TBM and a soft ground TBM, and the soft ground TBM is generally referred to as a shield Machine, so that the TBM commonly referred to as a Tunnel Boring Machine suitable for hard rock Boring. At present, hard rock TBM is adopted to carry out tunnel construction aiming at mountainous tunnels with complex strata, particularly tunnels with more unstable strata, the hard rock TBM utilizes a hob on a rotary cutter disc to extrude and shear broken rocks, stone slag is picked up through bucket teeth on the rotary cutter disc, falls onto a main belt conveyor to be conveyed backwards, and then is conveyed out of the tunnel through a traction slag car or a continuous tunnel belt conveyor.
In the tunnel construction process, when the tunnel water seepage occurs, drainage treatment is generally carried out, when the water quantity is large, the drainage time is very long, and the construction is continued after the water is drained, so that the construction period is prolonged. However, with the advance of tunnel construction, the geological conditions of tunnel construction are increasingly severe. For example: the geological conditions of alpine regions are large in tunnel burial depth, long in tunnel length and large in general scale, a large number of water diversion faults for communicating upper water bodies and ice lakes exist, water cannot be drained completely through drainage treatment in the construction process, if construction is forced to continue, the tunnel can leak water, and if the water diversion faults are exposed, the water diversion faults are likely to gush mud and burst water, even a large number of engineering accidents for submerging the tunnel occur, and the consequences are not reasonable.
Therefore, a technical scheme for tunnel construction for treating the water guide fault needs to be provided, so that the safety of construction can be ensured, and the water guide fault can be quickly passed through.
Disclosure of Invention
The application aims to provide a tunnel construction method, and provides an effective technical scheme for tunnel construction for treating a water guide fault.
In order to achieve the purpose, the application provides a technical scheme of a tunnel construction method, which comprises the following steps:
1) during construction of the main tunnel, detecting the front geological condition;
2) after water is detected, developing a first small conduit tunnel at the periphery of the main tunnel, and performing drainage operation through a first drainage port;
3) in the drainage process, judging the water pressure, if the water pressure is reduced to a set threshold value after the drainage setting time, continuing drainage, and entering the step 5 after the water pressure meets the construction requirements; if the water pressure does not drop to the set threshold value after the set time of water drainage, the water is subjected to a water guide fault, and the step 4) is carried out;
4) developing a second small duct tunnel above the first small duct tunnel, and performing a water discharge operation through a second water discharge port; then grouting is carried out through the second water outlet, and a water guide fault between the first water outlet and the second water outlet is blocked;
5) grouting and reinforcing surrounding rock;
6) after the surrounding rock is reinforced, the TBM passes through at a low speed.
The technical scheme of the tunnel construction method has the beneficial effects that: according to the invention, whether a water guide fault is met or not is determined according to the drainage condition of the first drainage port, if the water pressure is reduced to a set threshold value after the drainage setting time, the water guide fault with a water source is not met, the water can be drained completely by continuing drainage, and when the water pressure meets the construction conditions, the surrounding rock is reinforced by grouting, so that the TBM can safely pass; and if the water pressure does not drop to the set threshold value after the set time of water drainage, indicating that the water is in contact with the water guide fault, implementing grouting operation through the second water outlet to plug the water guide fault, and grouting to reinforce the surrounding rock after plugging is completed so that the TBM can safely pass through. The invention provides an effective scheme for tunnel construction in the case of water guide fault, and tunnel construction can be safely carried out in a severe geological environment.
Further, in order to more clearly specify the time when the plugging is completed, the first drain port continues the drainage process when the grouting operation is performed through the second drain port.
Further, in order to increase the drainage speed, in the step 1), the geological condition in front is detected through advanced detection equipment.
Further, the first small conduit tunnel is located above the main tunnel, parallel to the main tunnel.
Further, the set time was 24 hours.
Drawings
FIG. 1 is a construction view illustrating a tunnel construction method according to the present invention;
FIG. 2 is an enlarged view of the construction of the present invention;
FIG. 3 is a flow chart of the tunnel construction method of the present invention;
in the figure: the system comprises an advanced detection device 1, a first small conduit tunnel 2, a first advanced drilling operation chamber 3, a second small conduit tunnel 4, a second advanced drilling operation chamber 5, a water guide fault 6, a first advanced drilling channel 7, a second advanced drilling channel 8, a main tunnel 9, a first water drainage port 10 and a second water drainage port 11.
Detailed Description
The embodiment of the tunnel construction method comprises the following steps:
the main conception of the invention is that in order to control the water guide fault during tunnel construction, the invention strictly executes the construction sequence of 'digging must be detected, firstly detecting and then digging' in the TBM construction process: firstly, after water is detected, a first small conduit tunnel is developed near a main tunnel, a first drainage port carries out drainage operation, and whether a water guide fault is met or not is determined according to the drainage condition; secondly, after encountering a water guide fault, developing a second small guide pipe tunnel above the first small guide pipe tunnel, and performing water drainage operation through a second water drainage port; then grouting is carried out through the second water outlet, and a water guide fault between the first water outlet and the second water outlet is blocked; and finally, grouting is carried out to reinforce the surrounding rock, so that the TBM can safely pass through the water guide fault.
The tunnel construction method of the present invention will be described in detail below by taking the tunnel construction of the tibetan railway as an example.
The geological section of the Sichuan-Tibet railway is shown in figures 1 and 2, a water guide fault 6 communicated with an upper water body or an ice lake exists in the fault penetrated by the main tunnel part, and the concrete tunnel construction method is shown in figure 3 and comprises the following steps:
1) when the main tunnel 9 is constructed through the TBM, the advance detection equipment 1 is used for forecasting the geological condition in front, whether water exists is determined, and the forward construction is continued under the condition that the water does not exist.
2) When water is met, a first small conduit tunnel 2 parallel to the main tunnel 9 is developed above the main tunnel 9, the first small conduit tunnel 2 is communicated with a first advanced drilling operation chamber 3, advanced drilling is carried out on the small conduit tunnel to form a first advanced drilling channel 7, and after the first advanced drilling channel 7 is drilled to meet the water, drainage treatment is carried out through a first water drainage port 10.
3) Detecting water pressure in the drainage process, if the water pressure is reduced to a set threshold value after 24 hours of drainage, continuing drainage, and entering step 6 when the water pressure is reduced to meet construction requirements; and if the water pressure does not drop to the set threshold value after 24h of water drainage, determining that the water guide fault 6 is met, and entering the step 4).
4) And performing tunnel excavation obliquely upwards in the first advanced drilling operation chamber 3 to form a second small conduit tunnel 4, wherein the second small conduit tunnel 4 is communicated with a second advanced drilling operation chamber 5, advanced drilling is performed towards the direction of the water guide fault 6 through the second advanced drilling operation chamber 5 to form a second advanced drilling channel 8, after the second advanced drilling channel 8 is communicated with the water guide fault 6, drainage treatment is performed through a second water outlet 11, and the extending direction of the water guide fault 6 (namely the fracture communication direction of the water guide fault 6) is determined through the positions of the first water outlet 10 and the second water outlet 11.
5) After the second water discharge port 11 discharges water, grouting operation is performed through the second water discharge port 11, so that the water guide fault 6 between the first water discharge port 10 and the second water discharge port 11 is blocked, the first water discharge port 10 continues to discharge water while grouting is performed on the second water discharge port 11, and after the first water discharge port 10 discharges slurry, the blocking is finished.
6) And after plugging, grouting to reinforce the surrounding rock.
7) After the surrounding rock is reinforced, the TBM passes through at a low speed.
In the above embodiment, in order to more clearly specify the time when the plugging is completed, the second water discharge port 11 is grouted and the first water discharge port 10 continues to discharge water, but in another embodiment, when the second water discharge port 11 is grouted, the first water discharge port 10 may not discharge water, and the plugging of the water guide fault 6 may be realized by specifying the grouting time empirically.
In the above embodiment, in order to increase the drainage speed, the first small duct tunnel 2 is parallel to the main tunnel 9, and as another embodiment, the first small duct tunnel 2 may be drilled in another manner regardless of the drainage time, and the drainage operation may be performed.
In the above embodiment, the set time for the water pressure determination is 24h according to the actual condition of the water discharge, and of course, the set time may be changed according to the actual condition, and the present invention is not limited.
According to the invention, after water is met, drainage operation is carried out, whether the water is met with the water guide fault 6 or not is determined according to the drainage condition, and when the water is not met with the water guide fault 6, the water is continuously drained, and when the water is met with the water guide fault 6, the water guide fault 6 is blocked, so that the TBM can safely pass through. The invention designs a tunnel construction method, aims at the tunnel engineering of complex mountain tunnels and difficult large-scale water plugging and draining operation, and has the effect of passing through the water guiding fault 6 in a time-saving, labor-saving and standardized manner.
Claims (5)
1. A tunnel construction method is characterized by comprising the following steps:
1) during construction of the main tunnel, detecting the front geological condition;
2) after water is detected, a first small conduit tunnel is developed above the main tunnel, advanced drilling is carried out on the first small conduit tunnel to form a first advanced drilling channel, and when the first advanced drilling channel is drilled with water, water is drained through a first water drainage port;
3) in the drainage process, judging the water pressure, if the water pressure is reduced to a set threshold value after the drainage setting time, continuing drainage, and entering the step 5 after the water pressure meets the construction requirements; if the water pressure does not drop to the set threshold value after the set time of water drainage, the water is subjected to a water guide fault, and the step 4) is carried out;
4) developing a second small conduit tunnel above the first small conduit tunnel, performing advanced drilling towards the direction of the water guide fault through the second small conduit tunnel to form a second advanced drilling channel, and performing drainage operation through a second water drainage port after the second advanced drilling channel is communicated with the water guide fault; then grouting is carried out through the second water outlet, and a water guide fault between the first water outlet and the second water outlet is blocked;
5) grouting and reinforcing surrounding rock;
6) after the surrounding rock is reinforced, the TBM passes through at a low speed.
2. The tunnel construction method according to claim 1, wherein the first drain port continues to perform the drainage process while the grouting work is performed through the second drain port.
3. The tunnel construction method according to claim 1, wherein in the step 1), the geological condition ahead is detected by a lead detection device.
4. The method of tunneling according to claim 1, wherein the first small conduit tunnel is above and parallel to the main tunnel.
5. The tunnel construction method according to claim 1, wherein the set time is 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110256651.7A CN113153309B (en) | 2021-03-09 | 2021-03-09 | Tunnel construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110256651.7A CN113153309B (en) | 2021-03-09 | 2021-03-09 | Tunnel construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113153309A CN113153309A (en) | 2021-07-23 |
| CN113153309B true CN113153309B (en) | 2022-03-15 |
Family
ID=76886692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110256651.7A Active CN113153309B (en) | 2021-03-09 | 2021-03-09 | Tunnel construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113153309B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0649828A (en) * | 1992-07-31 | 1994-02-22 | Shimizu Corp | Structure and construction method of pressure-proof concrete wall |
| JP2005048497A (en) * | 2003-07-30 | 2005-02-24 | Taisei Corp | Method for inhibiting precipitation of efflorescence |
| CN102808628A (en) * | 2012-08-18 | 2012-12-05 | 山东新阳能源有限公司 | Construction method of passage of large-section tunnel by water diversion fault |
| EA201101366A1 (en) * | 2011-08-09 | 2013-03-29 | Открытое Акционерное Общество "Белгорхимпром" (Оао "Белгорхимпром") | METHOD OF PREVENTION OF FLOODING OF POTASSIUM MINES DURING BREAKTHROUGHS |
| CN106837352A (en) * | 2017-01-22 | 2017-06-13 | 中南大学 | Fault belt surrounding rock tunnel construction method |
| CN107152294A (en) * | 2017-06-28 | 2017-09-12 | 中国铁建大桥工程局集团有限公司 | High hydraulic pressure big flow Karst Tunnel underground water seal blocking method |
| CN107165659A (en) * | 2017-07-17 | 2017-09-15 | 中国电建集团华东勘测设计研究院有限公司 | Water-bed tunnel meets shear-zone front pre-grouting construction method |
| CN108590716A (en) * | 2018-04-18 | 2018-09-28 | 中国矿业大学 | A kind of tunnel crosses rich water tomography tree root type and dredges water blockoff integral construction method |
| CN109505628A (en) * | 2018-12-06 | 2019-03-22 | 中铁三局集团广东建设工程有限公司 | A kind of water-rich fault zone method for tunnel construction |
| CN110748348A (en) * | 2019-10-15 | 2020-02-04 | 中交第二公路勘察设计研究院有限公司 | Tunnel construction method for assisting advance pre-reinforcement of main tunnel by using service tunnel |
| CN111206933A (en) * | 2020-01-20 | 2020-05-29 | 西南交通大学 | Tunnel construction method for traversing karst water-rich section |
| CN111764863A (en) * | 2020-07-01 | 2020-10-13 | 中煤科工集团西安研究院有限公司 | Method for blocking water gushing of high-pressure drilling hole in underground fault fracture zone |
-
2021
- 2021-03-09 CN CN202110256651.7A patent/CN113153309B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0649828A (en) * | 1992-07-31 | 1994-02-22 | Shimizu Corp | Structure and construction method of pressure-proof concrete wall |
| JP2005048497A (en) * | 2003-07-30 | 2005-02-24 | Taisei Corp | Method for inhibiting precipitation of efflorescence |
| EA201101366A1 (en) * | 2011-08-09 | 2013-03-29 | Открытое Акционерное Общество "Белгорхимпром" (Оао "Белгорхимпром") | METHOD OF PREVENTION OF FLOODING OF POTASSIUM MINES DURING BREAKTHROUGHS |
| CN102808628A (en) * | 2012-08-18 | 2012-12-05 | 山东新阳能源有限公司 | Construction method of passage of large-section tunnel by water diversion fault |
| CN106837352A (en) * | 2017-01-22 | 2017-06-13 | 中南大学 | Fault belt surrounding rock tunnel construction method |
| CN107152294A (en) * | 2017-06-28 | 2017-09-12 | 中国铁建大桥工程局集团有限公司 | High hydraulic pressure big flow Karst Tunnel underground water seal blocking method |
| CN107165659A (en) * | 2017-07-17 | 2017-09-15 | 中国电建集团华东勘测设计研究院有限公司 | Water-bed tunnel meets shear-zone front pre-grouting construction method |
| CN108590716A (en) * | 2018-04-18 | 2018-09-28 | 中国矿业大学 | A kind of tunnel crosses rich water tomography tree root type and dredges water blockoff integral construction method |
| CN109505628A (en) * | 2018-12-06 | 2019-03-22 | 中铁三局集团广东建设工程有限公司 | A kind of water-rich fault zone method for tunnel construction |
| CN110748348A (en) * | 2019-10-15 | 2020-02-04 | 中交第二公路勘察设计研究院有限公司 | Tunnel construction method for assisting advance pre-reinforcement of main tunnel by using service tunnel |
| CN111206933A (en) * | 2020-01-20 | 2020-05-29 | 西南交通大学 | Tunnel construction method for traversing karst water-rich section |
| CN111764863A (en) * | 2020-07-01 | 2020-10-13 | 中煤科工集团西安研究院有限公司 | Method for blocking water gushing of high-pressure drilling hole in underground fault fracture zone |
Non-Patent Citations (2)
| Title |
|---|
| 宜万铁路岩溶隧道防排水原则及技术研究;王秀英等;《中国工程科学》;20100815;第12卷(第08期);第107-112页 * |
| 隧道岩溶富水断层带施工中注浆止水施工技术的应用;宋国振;《工程技术研究》;20170430(第04期);第84-85页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113153309A (en) | 2021-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106285699B (en) | Earth pressure balanced shield, EPBS mud cake based on synchronous jet stream prevents system | |
| CN111335902B (en) | Construction method for shield tunneling ground connection wall underpass operation subway station | |
| CN110735653A (en) | deep-hole retreating type grouting water plugging construction method for igneous rock water-rich fault | |
| CN204002831U (en) | A kind of screw machine blowout prevention structure | |
| CN104791007B (en) | A kind of water discharge method passing through during rich water crushed zone constructing tunnel | |
| CN111810199A (en) | Tunnel water inrush disaster prevention treatment method | |
| CN111101964B (en) | Construction method for blocking receiving tunnel portal by shield method | |
| CN110080789A (en) | A kind of shield sky, which pushes away, spells section of jurisdiction construction | |
| CN108590716A (en) | A kind of tunnel crosses rich water tomography tree root type and dredges water blockoff integral construction method | |
| JP2010031556A (en) | Construction method of tunnel in large depth and at high water pressure | |
| CN210564541U (en) | Quick heading machine | |
| CN113153309B (en) | Tunnel construction method | |
| CN111441819A (en) | Tunnel advanced exploratory hole karst high-pressure water burst plugging device and method | |
| CN109505633B (en) | Lining back guide pipe grouting water plugging device for muddy stratum and construction method | |
| CN113153364B (en) | Water inflow treatment method suitable for inclined shaft under steep water-rich rock stratum | |
| CN112502719B (en) | Method for TBM construction of lens body altered through high-pressure water-rich | |
| CN115199269A (en) | Multi-disaster integrated prevention and control method for island outburst coal seam strong and weak coupling structure | |
| CN209654048U (en) | A kind of water discharge tunnel tunnel shielding portal pre-buried structure | |
| CN113700490A (en) | Integrated freezing injury-water injury prevention and control method for tunnel construction and maintenance | |
| CN105275491B (en) | The drainage device and its discharge method of a kind of underground water | |
| CN109057803A (en) | A kind of excavation method for coal and gas prominent hydraulic tunnel | |
| CN113202486A (en) | Auxiliary pressure maintaining propulsion method for water-rich rock stratum SAMSON system | |
| CN112855182A (en) | Duct piece back gap filling system device for shield and method thereof | |
| CN110820721A (en) | Process for reinforcing blasting area by sleeve valve pipe grouting | |
| Farshbar et al. | Sealing of huge water ingress in headrace tunnel of Uma Oya Project, Sri Lanka |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |