CN112360510A - Full-section grouting construction method for coal mine tunnel - Google Patents
Full-section grouting construction method for coal mine tunnel Download PDFInfo
- Publication number
- CN112360510A CN112360510A CN202011195686.6A CN202011195686A CN112360510A CN 112360510 A CN112360510 A CN 112360510A CN 202011195686 A CN202011195686 A CN 202011195686A CN 112360510 A CN112360510 A CN 112360510A
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- grouting
- construction
- drill holes
- drilling
- roadway
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- 238000010276 construction Methods 0.000 title claims abstract description 50
- 239000003245 coal Substances 0.000 title claims abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 claims abstract description 13
- 230000002787 reinforcement Effects 0.000 claims description 11
- 238000007569 slipcasting Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005507 spraying 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
- E21D11/04—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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
A coal mine tunnel full-section grouting construction method belongs to the field of mining engineering and can solve the problems that the existing method for grouting, reinforcing and plugging a crack development roof of a surrounding rock of a coal mine tunnel is low in construction efficiency, frequent in equipment carrying, high in labor intensity, unreasonable in process and the like; and then, drilling and grouting construction is carried out on the top plate of the roadway, and sequential construction of two sides and the middle is adopted.
Description
Technical Field
The invention belongs to the technical field of mining engineering, and particularly relates to a technical method for grouting, reinforcing and plugging broken surrounding rocks of a top wall when the surrounding rock cracks of a coal mine tunnel develop and a top plate is sprayed with water. The method can solve a series of problems of low construction efficiency, frequent equipment transportation, high labor intensity, unreasonable working procedures and the like of the existing method for grouting, reinforcing and plugging the broken surrounding rock of the top wall when the crack of the surrounding rock of the coal mine tunnel develops and the roof is sprayed with water.
Background
The plastic zone is formed in the country rock behind the colliery tunnel tunnelling, when meeting geological structure such as fault, collapse post, the structure can switch on with the roof aquifer, can form tunnel roof trickle phenomenon, can corrode the tunnel and prop up the body, causes and props up the body and breaks, became invalid, produces the potential safety hazard, also can influence equipment safe handling in the tunnel simultaneously to it is current to influence the tunnel. The conventional common grouting mode is to firstly carry out drilling and grouting construction on the roadway wall; after the construction of the roadway side is finished, constructing a drill hole on the top plate in each section and grouting; and then constructing another drill hole on the inner top plate with the same section and grouting, and so on. The method has a series of problems of low construction efficiency, frequent equipment transportation, high labor intensity, unreasonable working procedures and the like. On the basis of guaranteeing the wall rock crack reinforcing shutoff effect, how to improve slip casting efficiency of construction reduces the auxiliary work volume, is the problem that needs to solve urgently.
Disclosure of Invention
The invention provides a coal mine tunnel full-section grouting construction method, aiming at a series of problems of low construction efficiency, frequent equipment transportation, high labor intensity, unreasonable working procedures and the like of the existing method for grouting, reinforcing and plugging the broken surrounding rock of the top wall when the crack of the surrounding rock of the coal mine tunnel develops and the roof is sprayed with water.
The invention adopts the following technical scheme:
a coal mine tunnel full-section grouting construction method comprises the following steps:
firstly, according to arrangement parameters of grouting reinforcement drill holes of surrounding rocks of a coal mine tunnel, when grouting reinforcement drill holes are uniformly distributed on a tunnel side part and a tunnel top plate in one section, performing drilling construction of grouting drill holes of the tunnel side part, performing drilling construction of grouting drill holes of the tunnel top plate, completing all the grouting drill holes in the same section, performing grouting, and then moving a drilling machine to construct a drill hole of the next section;
secondly, after the grouting reinforcement drilling construction of the roadway side part and the roadway top plate of the same section is finished, grouting is carried out on the drill holes in the same section, and firstly, grouting construction is carried out on the drill holes on the two sides of the roadway in the sequence from bottom to top; and then carrying out drilling and grouting construction on the top plate of the roadway, wherein the construction is carried out in the order of two sides and the middle.
The number of the drill holes on the two sides of the roadway is four, the drill holes are symmetrically arranged along the roadway, the two drill holes on the bottom are firstly constructed in grouting construction, and then the two drill holes on the upper side are constructed.
The drilling quantity of tunnel roof is three, arranges along tunnel roof equidistant, and the slip casting construction is under construction two drilling of both sides earlier, the drilling in the middle of the construction again.
The invention has the following beneficial effects:
the invention provides a method for drilling holes by grouting in the same section at one time and accumulating grouting after top supporting, which reduces the amount of auxiliary engineering to the maximum extent and has the crack filling and plugging effect capable of meeting the requirements of surrounding rock reinforcement and water spraying plugging. The method can obviously reduce the labor intensity, greatly improve the grouting construction efficiency, obviously reduce the auxiliary work amount of equipment carrying and the like, provide guarantee for the safe use of the coal mine tunnel, and simultaneously reduce the influence on the tunnel transportation.
Drawings
FIG. 1 is a sequence diagram of hole distribution and grouting construction of a full-section of the invention;
wherein: drilling No. 1-1; drilling No. 2-2; drilling No. 3-3; drilling No. 4-4; drilling No. 5-5; 6-6 drilling; drill holes No. 7-7.
Detailed Description
The invention is further explained with reference to the accompanying drawings.
A coal mine tunnel full-section grouting construction method comprises the following steps:
firstly, according to arrangement parameters of grouting reinforcement drill holes of surrounding rocks of a coal mine tunnel, when grouting reinforcement drill holes are uniformly distributed on a tunnel side part and a tunnel top plate in one section, performing drilling construction of grouting drill holes of the tunnel side part, performing drilling construction of grouting drill holes of the tunnel top plate, completing all the grouting drill holes in the same section, performing grouting, and then moving a drilling machine to construct a drill hole of the next section;
secondly, after the grouting reinforcement drilling construction of the roadway side part and the roadway top plate of the same section is finished, grouting is carried out on the drill holes in the same section, and firstly, grouting construction is carried out on the drill holes on the two sides of the roadway in the sequence from bottom to top; and then carrying out drilling and grouting construction on the top plate of the roadway, wherein the construction is carried out in the order of two sides and the middle.
As shown in the figure, after grouting reinforcement drilling construction of the roadway side part and the roadway top plate of the same section is completed, grouting is performed on the drill holes in the same section. Firstly, grouting construction is carried out on two sides of the drilled holes of the roadway, namely, firstly constructing No. 1 and No. 2 drilled holes and then constructing No. 3 and No. 4 drilled holes in the sequence from bottom to top; and then carrying out drilling and grouting construction on the top plate of the roadway, wherein the sequential construction of firstly constructing the 5 th drilling hole and the 6 th drilling hole and then constructing the 7 th drilling hole is adopted.
Claims (3)
1. A coal mine tunnel full-section grouting construction method is characterized by comprising the following steps: the method comprises the following steps:
firstly, according to arrangement parameters of grouting reinforcement drill holes of surrounding rocks of a coal mine tunnel, when grouting reinforcement drill holes are uniformly distributed on a tunnel side part and a tunnel top plate in one section, performing drilling construction of grouting drill holes of the tunnel side part, performing drilling construction of grouting drill holes of the tunnel top plate, completing all the grouting drill holes in the same section, performing grouting, and then moving a drilling machine to construct a drill hole of the next section;
secondly, after the grouting reinforcement drilling construction of the roadway side part and the roadway top plate of the same section is finished, grouting is carried out on the drill holes in the same section, and firstly, grouting construction is carried out on the drill holes on the two sides of the roadway in the sequence from bottom to top; and then carrying out drilling and grouting construction on the top plate of the roadway, wherein the construction is carried out in the order of two sides and the middle.
2. The coal mine roadway full-section grouting construction method according to claim 1, characterized in that: the number of the drill holes on the two sides of the roadway is four, the drill holes are symmetrically arranged along the roadway, the two drill holes on the bottom are firstly constructed in grouting construction, and then the two drill holes on the upper side are constructed.
3. The coal mine roadway full-section grouting construction method according to claim 1, characterized in that: the drilling quantity of tunnel roof is three, arranges along tunnel roof equidistant, and the slip casting construction is under construction two drilling of both sides earlier, the drilling in the middle of the construction again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011195686.6A CN112360510A (en) | 2020-10-30 | 2020-10-30 | Full-section grouting construction method for coal mine tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011195686.6A CN112360510A (en) | 2020-10-30 | 2020-10-30 | Full-section grouting construction method for coal mine tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112360510A true CN112360510A (en) | 2021-02-12 |
Family
ID=74513989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011195686.6A Withdrawn CN112360510A (en) | 2020-10-30 | 2020-10-30 | Full-section grouting construction method for coal mine tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112360510A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135316A (en) * | 2021-11-22 | 2022-03-04 | 紫金矿业集团股份有限公司 | Multi-directional composite hole nail injection and reinforcement method suitable for tuff roadway |
-
2020
- 2020-10-30 CN CN202011195686.6A patent/CN112360510A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135316A (en) * | 2021-11-22 | 2022-03-04 | 紫金矿业集团股份有限公司 | Multi-directional composite hole nail injection and reinforcement method suitable for tuff roadway |
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Legal Events
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210212 |
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| WW01 | Invention patent application withdrawn after publication |