CN110656955A - Tunnel structure penetrating through karst channel and method for tunnel penetrating through karst channel - Google Patents
Tunnel structure penetrating through karst channel and method for tunnel penetrating through karst channel Download PDFInfo
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- CN110656955A CN110656955A CN201911075993.8A CN201911075993A CN110656955A CN 110656955 A CN110656955 A CN 110656955A CN 201911075993 A CN201911075993 A CN 201911075993A CN 110656955 A CN110656955 A CN 110656955A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 238000009412 basement excavation Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 abstract description 3
- 239000010802 sludge Substances 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- E21D11/006—Lining anchored in the rock
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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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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/01—Methods or apparatus for enlarging or restoring the cross-section of tunnels, e.g. by restoring the floor to its original level
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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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- 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)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tunnel structure penetrating through a karst channel and a method for enabling a tunnel to penetrate through the karst channel. The invention aims to provide a tunnel structure penetrating through a karst passage and a method for allowing the tunnel to penetrate through the karst passage, so as to solve the problems of drainage and sludge accumulation when the tunnel penetrates through the karst passage in the prior art, and achieve the purposes of improving the operation safety of the tunnel and reducing the operation cost.
Description
Technical Field
The invention relates to the field of tunnel construction, in particular to a tunnel structure passing through a karst passage and a method for passing the tunnel through the karst passage.
Background
When traditional tunnel structure passed through the karst passageway, generally need set up the escape canal in the tunnel bottom, changed former karst passageway that crosses the tunnel cave body ditch to the tunnel bottom, can reduce the influence of karst passageway to tunnel structure.
In the current practical engineering, due to the elevation problem of the karst passage, an inverted siphon structure is needed when the traditional tunnel structure passes through the karst passage. "inverted siphon" structure can lead to the karst water of bottom drainage ditch to gather, and then leads to silt in the escape canal to pile up, and it is smooth and easy to influence the drainage, can influence tunnel structure safety itself even when seriously blockking up. For solving the accumulational problem of silt, can often consider in the engineering and set up the desilting inspection shaft in the tunnel side, the operation in-process needs regularly desilting, has increased the operation cost, and probably emits through the desilting inspection shaft when the karst water is great, gets into the tunnel body, influences the operation safety.
Disclosure of Invention
The invention aims to provide a tunnel structure penetrating through a karst passage and a method for allowing the tunnel to penetrate through the karst passage, so as to solve the problems of drainage and sludge accumulation when the tunnel penetrates through the karst passage in the prior art, and achieve the purposes of improving the operation safety of the tunnel and reducing the operation cost.
The invention is realized by the following technical scheme:
a tunnel structure penetrating through a karst channel comprises the karst channel and a tunnel lining penetrating through the karst channel, wherein a leveling layer is laid on the top of the tunnel lining, a plurality of drainage pipelines are arranged on the leveling layer, and two ends of each drainage pipeline are respectively communicated with a high water level port and a low water level port of the karst channel.
Aiming at the problems of drainage and sludge accumulation when a tunnel passes through a karst passage in the prior art, the invention provides a tunnel structure passing through the karst passage, wherein a leveling layer is laid on the top of a tunnel lining, so that a drainage pipeline is convenient to arrange. The specific number of the drainage pipelines is set according to the size of the drainage pipelines and the size of the karst channel, so that the drainage pipelines can be laid as many as possible within the cross section range of the karst channel. Since the drain pipes are arranged on the levelling layer, it is preferred that the drain pipe axes are distributed horizontally. Two ends of the drainage pipeline are respectively communicated with the high water level port and the low water level port of the karst channel, and then water in the karst channel is led to the low water level from the high water level through each drainage pipeline for drainage. In this application, rivers in the karst passageway get into in the smooth drainage pipe from high water level, flow in drainage pipe under inertia and water pressure effect, finally flow back to the karst passageway through low water level mouth in, whole drainage process all relies on the dead weight and the kinetic energy of water to independently accomplish, and rivers are discharged from the top of tunnel hole body, consequently compare in prior art will cross the karst passageway of tunnel body and change the mode of trench to tunnel bottom, adopted different drainage thinking and drainage route completely, need not to adopt "inverted siphon" structure, more need not to set up the desilting inspection shaft in the tunnel side, consequently, be favorable to reducing engineering cost. And because the dredging inspection well is not needed, the operation cost of dredging and maintaining is not needed to be faced completely, and the safety problem that the water enters the tunnel body from the dredging inspection well when the karst water is large is not needed to be faced, so that the operation safety of the tunnel can be obviously improved, and the operation cost is reduced.
The tunnel lining is characterized by further comprising an expanding excavation area located outside the tunnel lining, the drainage pipeline is located in the expanding excavation area locally or integrally, and concrete is backfilled in the expanding excavation area. After the tunnel lining is formed, the tunnel is expanded and excavated at the outer side to form an expanded and excavated area, so that drainage pipelines can be conveniently arranged and installed. After the drainage pipeline is installed and two ends of the drainage pipeline are connected in place, concrete is backfilled into the expanding excavation area, the phenomenon that stratum stability is affected due to long-term release of the expanding excavation area is avoided, and meanwhile, the drainage pipeline, a tunnel lining and the like are coated and protected through the backfilled concrete.
A water blocking dam is arranged at a high water level port of the karst channel, and one end of the drainage pipeline is connected with a dam port of the water blocking dam. The karst water is collected into the drainage pipeline through the retaining dam.
And the distance between the dam mouth of the water retaining dam and the tunnel lining is more than or equal to 5 m. And karst water is prevented from easily permeating to the tunnel lining, so that the protection effect on the tunnel lining is improved.
The drainage pipeline is a corrugated steel pipe. The corrugated steel pipe is a corrugated pipe made of steel, can be elongated or shortened by a small amount in a self-adaptive manner, and therefore has good toughness when used as a drainage pipeline. Ground stress relief is a slow process in which the tensile and compressive strength may be compromised if rigid drainage pipes are used. Therefore, the corrugated steel pipe is specially used as the drainage pipeline, the interference caused by the long-term and slow ground stress releasing process can be effectively overcome, and the drainage pipeline is ensured to effectively discharge the karst water for a long time.
The leveling layer is a concrete leveling layer.
A method of tunneling through a karst tunnel comprising the steps of:
(a) enlarging and excavating a tunnel section according to the inner contour of the parking belt;
(b) paving a leveling layer on the top of the tunnel lining, and installing a plurality of drainage pipelines on the leveling layer according to the section size of the karst channel; the diameter of the drain pipe is not limited, and can be flexibly adjusted according to the section of the karst channel;
(c) arranging a water retaining dam at the high water level port of the karst channel, and connecting one end of a drainage pipeline with the dam port of the water retaining dam and communicating the other end with the low water level port of the karst channel;
(d) and backfilling by adopting concrete between the tunnel lining and the expanded excavation profile.
Preferably, the retaining dam is made of concrete.
Preferably, the low water level ports of the karst passages are lined along the outside of the tunnel structure. The collected karst water is convenient to drain along the outer side of the tunnel.
Preferably, the distance between the dam opening of the retaining dam and the tunnel lining is greater than or equal to 5 m.
Compared with the prior art, the invention has the following advantages and beneficial effects:
compared with the mode of changing the karst channel traversing the tunnel body to the bottom of the tunnel in the prior art, the tunnel structure traversing the karst channel and the method traversing the karst channel adopt completely different drainage ideas and drainage paths, do not need to adopt an inverted siphon structure, and do not need to arrange a dredging inspection well on the side surface of the tunnel, thereby being beneficial to reducing the engineering cost. And because the dredging inspection well is not needed, the operation cost of dredging and maintaining is not needed to be faced completely, and the safety problem that the water enters the tunnel body from the dredging inspection well when the karst water is large is not needed to be faced, so that the operation safety of the tunnel can be obviously improved, and the operation cost is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
1-karst channel, 2-expanded excavation profile, 3-tunnel lining, 4-drainage pipeline, 5-concrete, 6-retaining dam and 7-diversion dam.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
the tunnel structure penetrating through the karst channel shown in fig. 1 comprises a karst channel 1 and a tunnel lining 3 penetrating through the karst channel 1, wherein a leveling layer is laid on the top of the tunnel lining 3, a plurality of drainage pipelines 4 are arranged on the leveling layer, and two ends of each drainage pipeline 4 are respectively communicated with a high water level port and a low water level port of the karst channel 1.
The tunnel structure of this embodiment can realize that the tunnel body of a cave passes through the drainage demand of karst passageway, can replace traditional "the siphon" structure simultaneously, solves the accumulational problem of silt, avoids the tunnel operation in-process to pile up or the too big karst water that leads to of karst water volume spills over, influences tunnel operation safety.
Example 2:
the tunnel structure penetrating through the karst passage as shown in fig. 1 further comprises an enlarged excavation area outside the tunnel lining 3 on the basis of the embodiment 1, the drainage pipeline 4 is partially or wholly positioned in the enlarged excavation area, and concrete 5 is filled in the enlarged excavation area. A water blocking dam 6 is arranged at a high water level port of the karst channel 1, and one end of the drainage pipeline 4 is connected with a dam port of the water blocking dam 6. And the distance between the dam mouth of the water retaining dam 6 and the tunnel lining 3 is more than or equal to 5 m. The drainage pipeline 4 is a corrugated steel pipe. The leveling layer is a concrete leveling layer.
Preferably, the diversion dam 7 is further arranged at the low water level port of the karst passage 1, and one end of the drainage pipeline 4 is connected with the diversion dam 7, so that the karst water guided by the drainage pipeline 4 can quickly flow back into the karst passage after passing through the tunnel from the upper side.
Example 3:
the tunnel traversing karst passage method as shown in fig. 1:
(1) and enlarging and excavating the section of the tunnel according to the inner contour of the parking belt.
(2) The tunnel can adopt an arch structure or a rectangular structure, and the structure can meet the tunnel building clearance and traffic safety engineering installation requirements.
(3) And paving a concrete leveling layer at the top of the tunnel, and installing a plurality of steel corrugated pipes with the diameter of 150cm according to the section size of the karst channel.
(4) A water retaining dam is arranged at a high water level port of the karst channel by adopting concrete, the distance between the position of the dam port and the tunnel structure is not less than 5m, and low water level ports are arranged in sequence through the outer side of the tunnel structure.
(5) And a cavity between the tunnel structure and the excavated section is backfilled by concrete.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The tunnel structure penetrating through the karst channel comprises the karst channel (1) and a tunnel lining (3) penetrating through the karst channel (1), and is characterized in that a leveling layer is laid on the top of the tunnel lining (3), a plurality of drainage pipelines (4) are arranged on the leveling layer, and two ends of each drainage pipeline (4) are respectively communicated with a high water level port and a low water level port of the karst channel (1).
2. A tunnel structure for traversing karst passageways according to claim 1, further comprising an enlarged excavation area outside the tunnel lining (3), wherein the drainage pipe (4) is partially or entirely located in the enlarged excavation area, and wherein concrete (5) is backfilled in the enlarged excavation area.
3. A tunnel structure for traversing karst passages according to claim 1, characterized in that a dam (6) is provided at the high water level mouth of the karst passage (1), and one end of the drainage pipeline (4) is connected to the dam mouth of the dam (6).
4. A tunnel structure through karst passages according to claim 3, characterised in that the distance between the mouth of the retaining dam (6) and the tunnel lining (3) is greater than or equal to 5 m.
5. A karst tunnel according to claim 1, wherein the drainage pipeline (4) is a corrugated steel pipe.
6. A tunnel structure through a karst tunnel according to claim 1, wherein the screed is a concrete screed.
7. The method for enabling the tunnel to pass through the karst channel is characterized by comprising the following steps of:
(a) enlarging and excavating a tunnel section according to the inner contour of the parking belt;
(b) a leveling layer is laid on the top of the tunnel lining (3), and a plurality of drainage pipelines (4) are installed on the leveling layer according to the size of the section of the karst channel;
(c) arranging a water blocking dam (6) at a high water level port of the karst channel (1), and connecting one end of a drainage pipeline (4) with a dam port of the water blocking dam (6) and communicating the other end with a low water level port of the karst channel (1);
(d) and concrete is adopted to backfill between the tunnel lining (3) and the expanded and dug profile.
8. A method of tunneling through karst tunnels according to claim 7, characterised in that the barrage (6) is made of concrete.
9. Method for tunneling through karst tunnels according to claim 7, characterized in that the low water level ports of the karst tunnels (1) are lined along the outside of the tunnel structure.
10. A method of tunneling through karst tunnels according to claim 7, characterized in that the distance between the mouth of the barrage (6) and the tunnel lining (3) is greater than or equal to 5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075993.8A CN110656955A (en) | 2019-11-06 | 2019-11-06 | Tunnel structure penetrating through karst channel and method for tunnel penetrating through karst channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075993.8A CN110656955A (en) | 2019-11-06 | 2019-11-06 | Tunnel structure penetrating through karst channel and method for tunnel penetrating through karst channel |
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| Publication Number | Publication Date |
|---|---|
| CN110656955A true CN110656955A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911075993.8A Pending CN110656955A (en) | 2019-11-06 | 2019-11-06 | Tunnel structure penetrating through karst channel and method for tunnel penetrating through karst channel |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001123800A (en) * | 1999-10-25 | 2001-05-08 | Mitsubishi Heavy Ind Ltd | Tunnel lining method |
| CN106401600A (en) * | 2016-10-28 | 2017-02-15 | 招商局重庆交通科研设计院有限公司 | Tunnel strengthening treatment method and support structure based on positions of dissolving cavities |
| CN106988758A (en) * | 2017-05-08 | 2017-07-28 | 中铁五局集团第五工程有限责任公司 | One kind is used to pass through large-scale vertical solution cavity group method for tunnel construction |
| CN206592151U (en) * | 2017-02-21 | 2017-10-27 | 中国电建集团华东勘测设计研究院有限公司 | A kind of stifled row's integrated structure of rich water karst tunnel |
| CN109812270A (en) * | 2019-03-22 | 2019-05-28 | 贵州智华建设工程有限责任公司 | A kind of supporting construction and its construction method of Tunnel Passing rich water filled-type solution cavity |
| CN210738578U (en) * | 2019-11-06 | 2020-06-12 | 四川省交通勘察设计研究院有限公司 | Tunnel structure passing through karst channel |
-
2019
- 2019-11-06 CN CN201911075993.8A patent/CN110656955A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001123800A (en) * | 1999-10-25 | 2001-05-08 | Mitsubishi Heavy Ind Ltd | Tunnel lining method |
| CN106401600A (en) * | 2016-10-28 | 2017-02-15 | 招商局重庆交通科研设计院有限公司 | Tunnel strengthening treatment method and support structure based on positions of dissolving cavities |
| CN206592151U (en) * | 2017-02-21 | 2017-10-27 | 中国电建集团华东勘测设计研究院有限公司 | A kind of stifled row's integrated structure of rich water karst tunnel |
| CN106988758A (en) * | 2017-05-08 | 2017-07-28 | 中铁五局集团第五工程有限责任公司 | One kind is used to pass through large-scale vertical solution cavity group method for tunnel construction |
| CN109812270A (en) * | 2019-03-22 | 2019-05-28 | 贵州智华建设工程有限责任公司 | A kind of supporting construction and its construction method of Tunnel Passing rich water filled-type solution cavity |
| CN210738578U (en) * | 2019-11-06 | 2020-06-12 | 四川省交通勘察设计研究院有限公司 | Tunnel structure passing through karst channel |
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