CN107355232B - Huge loose rock pile tunnel import surface water interception and drainage system - Google Patents
Huge loose rock pile tunnel import surface water interception and drainage system Download PDFInfo
- Publication number
- CN107355232B CN107355232B CN201710594946.9A CN201710594946A CN107355232B CN 107355232 B CN107355232 B CN 107355232B CN 201710594946 A CN201710594946 A CN 201710594946A CN 107355232 B CN107355232 B CN 107355232B
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- rock pile
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- 239000011435 rock Substances 0.000 title claims abstract description 45
- 239000002352 surface water Substances 0.000 title claims abstract description 12
- 230000008676 import Effects 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000126 substance Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims abstract description 3
- 239000011440 grout Substances 0.000 claims description 8
- 239000004570 mortar (masonry) Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 8
- 239000004575 stone Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
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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
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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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
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a surface water intercepting and draining system for an inlet of a giant loose rock pile tunnel, which is characterized in that: the tunnel water-retaining device comprises two water-retaining gutters arranged on a slope right above a tunnel, the direction of the two water-retaining gutters is vertical to the direction of the tunnel, and the two water-retaining gutters are respectively arranged at positions close to an inlet of the tunnel and a rock pile passing position of the tunnel; the method comprises the step of adding a herringbone waterproof curtain by using chemical slurry, wherein the herringbone waterproof curtain is arranged at the position where a tunnel passes through a rock pile and is symmetrically arranged on two sides of the center line of the tunnel. Compared with the conventional scheme that the water intercepting gutter is arranged on the ground surface, the water intercepting gutter is provided with two water intercepting gutters, so that excessive ground surface rainfall can be intercepted and discharged in time; the water-proof curtain shaped like the Chinese character 'ren' leads surface rainfall and mountain fissure water flowing down along the mountain out of the tunnel range, effectively prevents hidden danger of lining water leakage caused by water permeating into the rock heap and influences the stability of the rock heap, thereby ensuring normal construction and normal operation of the tunnel.
Description
Technical Field
The invention relates to the technical field of water prevention and drainage of tunnels, in particular to a surface water intercepting and draining system for an inlet of a giant loose rock pile tunnel.
Background
The scale of the rock pile at the entrance of the tunnel at the great front stone ridge is very large, the range of the rock pile comprises almost the whole mountain body at the entrance of the tunnel, the natural gradient is 26-38 degrees, the thickness of the rock pile is 26.3-48.4 meters, and the mountain body at the lower part of the rock pile body extends into the river. The rock mass mainly comprises rock blocks with different sizes, the rock mass is quartz sandstone of an early-shock denier system fishing platform group (Z1d), the diameter of the rock blocks is more than 0.5 m-1.5 m, the diameter of the rock blocks is 2-3 m, the overall block diameter is uniform, the rock mass is of a loose overhead structure and basically has no bonding, no broken rock and fine soil filling and no separation, and the void ratio of the rock mass reaches 40-50%. The tunnel with the large front stone ridge penetrates through the middle upper part of the giant rock pile, the maximum thickness of the rock pile at the top of the tunnel is 50 meters, and the height of the bottom of the tunnel from a bedrock of the rock pile is more than 32 meters.
The area of the tunnel is rainy in 5-9 months, the rainfall is abundant, and due to the large rock mass porosity, rainfall and mountain fissure water can directly seep into the tunnel. During construction, the stability of surrounding rocks is reduced (particularly, the influence on a rock pile body which is very loose per se is great), so that excavation is very difficult, the difficulty and the cost of support are increased, grouting water plugging and surrounding rock reinforcement are needed, sometimes, shutdown is even forced, the construction period is seriously influenced, the site civilized construction is poor, and the drainage cost is additionally increased. In the tunnel operation stage, seasonal surface water infiltration has a great deal of adverse effects and even threats on the stability of the tunnel structure, the operation of facilities in the tunnel, the driving safety and the like.
Disclosure of Invention
The invention provides a surface water interception and drainage system at an inlet of a giant loose rock stack tunnel, which can intercept and drain excessive surface rainfall in time and can lead the surface rainfall flowing down along a mountain and mountain fissure water out of the range of the tunnel so as to ensure the normal construction of the tunnel and the normal operation of the tunnel at the later stage.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows:
the utility model provides a huge loose rock pile tunnel import surface water cuts row system which characterized in that:
the tunnel is characterized by comprising two intercepting ditches, wherein the two intercepting ditches are arranged on a slope right above a tunnel, the overall direction of the two intercepting ditches is vertical to the direction of the tunnel, and the two intercepting ditches are respectively arranged at positions close to an inlet of the tunnel and a rock pile passing position of the tunnel;
the method comprises the step of adding a herringbone waterproof curtain by using chemical slurry, wherein the herringbone waterproof curtain is arranged at the position where a tunnel passes through a rock pile and is symmetrically arranged on two sides of the center line of the tunnel.
Preferably: and a mortar rubble protection layer is laid on the ground surface, the thickness of the mortar rubble protection layer is 30cm, the mortar rubble protection layer is laid between the two intercepting ditches along the whole rock heap range in a whole length mode, and the mortar rubble protection layer is laid on two sides of the center line of the tunnel along the width of each 20 m.
Preferably: the length of both sides of the herringbone waterproof curtain is 15m-20 m.
The invention has the advantages and positive effects that:
compared with the conventional scheme that the water intercepting gutter is arranged on the ground surface, the water intercepting gutter is provided with two water intercepting gutters, so that excessive ground surface rainfall can be intercepted and discharged in time; the herringbone waterproof curtain can guide surface rainfall and mountain fissure water flowing down along a mountain out of the tunnel range, effectively prevents hidden danger of lining water leakage caused by water permeating into a rock pile and influences stability of the rock pile, and accordingly guarantees normal construction of the tunnel and normal operation after tunnel construction is completed.
Drawings
FIG. 1 is a schematic plan view of the present invention water shut-off system arrangement;
FIG. 2 is a cross-sectional view of the grouting of the herringbone curtain of the present invention.
In the figure: 1. a high-level water intercepting gutter; 2. a low-position water intercepting gutter; 3. a waterproof curtain shaped like a Chinese character 'ren'; 4. protecting mortar rubbles; 1, a tunnel inlet; and 2, grouting pipes.
Detailed Description
For a further understanding of the invention, its nature and utility, reference should be made to the following examples, which are set forth in the following detailed description, taken in conjunction with the accompanying drawings, in which:
referring to fig. 1 and 2, a surface water intercepting and draining system for an entrance of a giant loose rock pile tunnel is innovative in that:
the tunnel is characterized by comprising two intercepting gutters, wherein the two intercepting gutters are arranged on a slope right above the tunnel, the whole trend of the two intercepting gutters is perpendicular to the trend of the tunnel, and the two intercepting gutters are respectively arranged at positions close to a tunnel inlet 1 and a rock pile passing position of the tunnel. The intercepting gutter near the tunnel where it passes through the heap is called the high intercepting gutter 1, and the intercepting gutter near the tunnel entrance is called the low intercepting gutter 2. The cross section shapes of the two intercepting ditches are not limited and can be common shapes such as isosceles trapezoid, rectangle and the like, the depth of the two intercepting ditches is determined according to the precipitation of a specific tunnel passing area, and the depth of the intercepting ditches can be larger in an area with larger precipitation.
The method comprises a herringbone waterproof curtain 3 additionally arranged by using chemical grout, wherein the herringbone waterproof curtain is arranged at the position where a tunnel passes through a rock pile and is symmetrically arranged on two sides of the center line of the tunnel. The construction of the herringbone waterproof curtain adopts two rows of grouting pipes 2, the grouting depth is up to the bedrock, the grouting steel pipes adopt seamless steel pipes with the diameter of 89mm, the longitudinal and transverse spacing is 0.5m, and the grouting pipes are arranged in a quincunx shape; the grouting material is a Meigu No. 367 liquid chemical grouting material, the expansion rate is 5 times, and the effective diffusion radius of each grouting pipe is 0.5 m.
In the above-mentioned cut drainage system, still further laid grout rubble protection 4 at the earth's surface, the thickness of grout rubble protection is 30cm, and grout rubble is prevented setting up and is passed through long the laying along whole heap scope between two water intercepting gutter, and grout rubble protection and lay each 20m of width along tunnel central line both sides. The protection of paving the grout rubble can effectively isolate surface water, prevent rainwater from seeping down in the area between the two intercepting ditches, thereby further improving the drainage effect of the surface intercepting drainage system.
In the above cut-off drainage system, both sides of the herringbone waterproof curtain are further preferably 15m to 20m in length.
The surface cutting and drainage system is suitable for terrains, other tunnels, and similar large loose rock piles, besides large front stone ridges, and is also suitable for the invention.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the present invention is covered by the claims.
Claims (3)
1. The utility model provides a huge loose rock pile tunnel import surface water cuts row system which characterized in that:
the tunnel is characterized by comprising two intercepting ditches, wherein the two intercepting ditches are arranged on a slope right above a tunnel, the overall direction of the two intercepting ditches is vertical to the direction of the tunnel, and the two intercepting ditches are respectively arranged at positions close to an inlet of the tunnel and a rock pile passing position of the tunnel; the gutter near the tunnel where the tunnel passes through the rock mass is called a high-level gutter, and the gutter near the tunnel entrance is called a low-level gutter;
the method comprises the steps of adding a herringbone waterproof curtain by using chemical slurry, wherein the herringbone waterproof curtain is arranged at the position where a tunnel passes through a rock pile and is symmetrically arranged on two sides of the center line of the tunnel; the grout rubble protection is arranged between the two water intercepting gutters and laid along the whole range of the rock mass in a through-length mode, and the width of the grout rubble protection laid along the two sides of the center line of the tunnel is 20m respectively; when the herringbone waterproof curtain is constructed, two rows of grouting pipes are adopted, and the grouting depth is up to bedrock.
2. The giant loose rock pile tunnel inlet surface water intercepting and draining system of claim 1, wherein: and a mortar rubble protection layer is laid on the ground surface, the thickness of the mortar rubble protection layer is 30cm, and the width of each mortar rubble protection layer is 20m along the two sides of the center line of the tunnel.
3. The giant loose rock pile tunnel inlet surface water intercepting and draining system of claim 1, wherein: the length of both sides of the herringbone waterproof curtain is 15m-20 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594946.9A CN107355232B (en) | 2017-07-20 | 2017-07-20 | Huge loose rock pile tunnel import surface water interception and drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594946.9A CN107355232B (en) | 2017-07-20 | 2017-07-20 | Huge loose rock pile tunnel import surface water interception and drainage system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107355232A CN107355232A (en) | 2017-11-17 |
| CN107355232B true CN107355232B (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710594946.9A Active CN107355232B (en) | 2017-07-20 | 2017-07-20 | Huge loose rock pile tunnel import surface water interception and drainage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107355232B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203822322U (en) * | 2014-03-12 | 2014-09-10 | 中国水电顾问集团贵阳勘测设计研究院有限公司 | Open cut tunnel structure used in highway passing through landslide mass |
| CN104453946A (en) * | 2014-11-19 | 2015-03-25 | 北京首尔工程技术有限公司 | Advanced reinforcing construction method for building tunnel in soft surrounding rock |
| CN204703189U (en) * | 2015-06-09 | 2015-10-14 | 山西省交通规划勘察设计院 | A kind of cutting barricade being applicable to crevice water, diving growth |
-
2017
- 2017-07-20 CN CN201710594946.9A patent/CN107355232B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203822322U (en) * | 2014-03-12 | 2014-09-10 | 中国水电顾问集团贵阳勘测设计研究院有限公司 | Open cut tunnel structure used in highway passing through landslide mass |
| CN104453946A (en) * | 2014-11-19 | 2015-03-25 | 北京首尔工程技术有限公司 | Advanced reinforcing construction method for building tunnel in soft surrounding rock |
| CN204703189U (en) * | 2015-06-09 | 2015-10-14 | 山西省交通规划勘察设计院 | A kind of cutting barricade being applicable to crevice water, diving growth |
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| Publication number | Publication date |
|---|---|
| CN107355232A (en) | 2017-11-17 |
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