CN106246202A - A kind of loose weak country rock tunnel combined bolting and shotcrete structure and construction method - Google Patents
A kind of loose weak country rock tunnel combined bolting and shotcrete structure and construction method Download PDFInfo
- Publication number
- CN106246202A CN106246202A CN201610949200.0A CN201610949200A CN106246202A CN 106246202 A CN106246202 A CN 106246202A CN 201610949200 A CN201610949200 A CN 201610949200A CN 106246202 A CN106246202 A CN 106246202A
- Authority
- CN
- China
- Prior art keywords
- country rock
- tunnel
- anchor
- anchor pole
- spray layer
- 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.)
- Pending
Links
- 239000011435 rock Substances 0.000 title claims abstract description 38
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 239000011378 shotcrete Substances 0.000 title claims abstract description 19
- 239000007921 spray Substances 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000004873 anchoring Methods 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 230000008093 supporting effect Effects 0.000 abstract description 10
- 239000003245 coal Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 206010030113 Oedema Diseases 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract description 2
- 244000052769 pathogen Species 0.000 abstract description 2
- 230000001717 pathogenic effect Effects 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000019994 cava Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E21D11/14—Lining predominantly with metal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Landscapes
- 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)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to colliery tunnel support field, a kind of loose weak country rock tunnel combined bolting and shotcrete structure, including flexible spray layer, steel band, anchor pole and anchor cable, described flexible spray layer sprays on top layer, tunnel, described steel band is arranged on described flexible spray layer surface, described anchor pole and anchor cable and through described steel band and flexible spray layer and inserts the inside in described tunnel and fix.Beneficial effect: by spraying flexible spray layer on surface, country rock tunnel, loose weak country rock is made to be bonded to a flexible entirety, prevent installing anchor pole, anchor pole is applied during pretightning force or by ore deposit pressure effect after near anchor pole end wall damage cause supporting to lose efficacy, fill and lead up country rock surface and make country rock surface uniform force, improve supporting construction, and playing closing country rock, the isolation edema due to wind pathogen attenuation to country rock, the coal mine roadway in country rock loose weak uses has good supporting effect.
Description
Technical field
The present invention relates to colliery tunnel support field, specifically a kind of loose weak country rock tunnel combined bolting and shotcrete method.
Background technology
When the coal mine roadway construction anchor pole of country rock very loose weak uses end anchor supporting, anchor pole is being installed, to anchor pole
Easily caving in during applying pretightning force or by country rock near anchor pole end after the pressure effect of ore deposit, anchor pole lost efficacy therewith, and traditional
Iron wire hanging net or bar-mat reinforcement can not effectively solve this problem.
Summary of the invention
The surface, loose weak tunnel that it is an object of the invention to overcome prior art to exist easily caves in and causes anchor pole to lose efficacy
Defect, it is provided that a kind of loose weak country rock tunnel combined bolting and shotcrete structure and construction method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of loose weak country rock tunnel combined bolting and shotcrete knot
Structure, including flexible spray layer, steel band, anchor pole and anchor cable, described flexible spray layer is coated in top layer, tunnel, and described steel band is arranged on institute
State flexible spray layer surface, described anchor pole and anchor cable pass described steel band and flexible spray layer and insert the inside in described tunnel admittedly
Fixed.
Further, described flexible spray layer material is preferably polyimides glue fat material, and thickness is 30-80mm.
As preferably, described anchor pole is left-handed twisted steel anchor rod without longitudinal rib, and described in adjacent two rows, the spacing of anchor pole is little
In 1000mm.The left-handed intensity of twisted steel anchor rod without longitudinal rib is higher.
As preferably, internal logical for improving the anchoring strength between anchor pole and anchor cable, described anchor pole and anchor cable and tunnel
Cross Anchor Agent anchoring.
Further, for the connection of anchor pole, anchor cable and steel band is effectively ensured, it is to avoid get loose, described anchor pole and anchor cable
End is connected with described steel band by pallet.
As preferably, described pallet dimension is 300mm*300mm.
The construction method of above-mentioned loose weak country rock tunnel combined bolting and shotcrete structure, comprises the steps:
(1) roadway construction shapes；(2) surface, tunnel is sprayed flexible spray layer；(3) flexible spray layer formed in step (2)
Surface configuration steel band, and anchor pole of constructing；(4) construction anchor cable.
Further, in step (3), every described anchor pole uses a joint rapid resin Anchor Agent and a joint middling speed resin anchor
Gu agent anchors；In step (4), every described anchor cable uses a joint rapid resin Anchor Agent and a joint middling speed resin anchoring agent anchoring.
As preferably, between described anchor pole and inside, tunnel, anchor force is not less than 100kN, and pretightning force is not less than 80kN.
As preferably, the anchor force between described anchor cable and tunnel is not less than 250kN, and pretightning force is not less than 150kN.
Beneficial effect: by spraying flexible spray layer on surface, country rock tunnel, make loose weak country rock be bonded to a flexibility
Entirety, prevent installing anchor pole, anchor pole is applied during pretightning force or by ore deposit pressure effect after country rock near anchor pole end
Cave in and cause supporting to lose efficacy, fill and lead up country rock surface and make country rock surface uniform force, improve supporting construction, and play closing country rock,
The isolation edema due to wind pathogen attenuation to country rock, the coal mine roadway in country rock loose weak uses has good supporting effect.
Accompanying drawing explanation
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is supporting construction sectional view；
Fig. 2 is another angle sectional view of supporting construction.
Wherein: 1. anchor cable, 2. flexible spray layer, 3. anchor pole, 4. steel band, 5. pallet.
Detailed description of the invention
Embodiment
The construction method of a kind of loose weak country rock tunnel combined bolting and shotcrete structure, comprises the steps: that 1. roadway construction becomes
Shape；2. flexible spray layer 2, in the application as a example by polyimides glue fat material, thickness 30-80mm are sprayed in top layer, tunnel, make tunnel
Country rock top layer is formed flexible overall；3. adding steel band 4, the left-handed twisted steel anchor rod without longitudinal rib of high intensity 3 of constructing, an array pitch is less than
1000 millimeters, deviation ± 100 millimeter；Anchor pole 3 is perpendicular to crag, and deviation is less than 10 °, and anchor pole 3 uses resin anchoring agent to anchor, anchor
Gu power is not less than 100kN, pretightning force is not less than 80kN；4. construction anchor cable 1, anchor cable 1 uses resin anchoring agent to anchor, and anchor force is not
Less than 250kN, anchor pole 3 pretightning force is not less than 150kN, a size of 300 × 300 millimeters of pallet 5.
The supporting construction that said method is formed is as follows: as illustrated in fig. 1 and 2, a kind of loose weak country rock tunnel combined bolting and shotcrete
Structure, including flexible spray layer 2, steel band 4, anchor pole 3 and anchor cable 1, described flexible spray layer 2 sprays on top layer, tunnel, described steel band 4
It is arranged on described flexible spray layer 2 surface, described anchor pole 3 and anchor cable 1 through described in described steel band 4 and flexible spray layer 2 insertion
The inside in tunnel is also anchored by Anchor Agent, and described anchor pole 3 and the end of anchor cable 1 are connected with described steel band 4 by pallet 5,
Described pallet 5 a size of 300mm*300mm.
The flexible spray layer 2 formed enables to loose weak country rock and bonds in a flexible entirety, the most easy to crack, disconnected
Split, it is possible to effectively prevent from caving in.
Should be appreciated that specific embodiment described above is only used for explaining the present invention, be not intended to limit the present invention.By
What the spirit of the present invention was extended out obviously changes or changes among still in protection scope of the present invention.
Claims (10)
1. a loose weak country rock tunnel combined bolting and shotcrete structure, it is characterised in that: include flexible spray layer, steel band, anchor pole and anchor
Rope, described flexible spray layer sprays on top layer, tunnel, and described steel band is arranged on described flexible spray layer surface, described anchor pole and anchor
Rope is through described steel band and flexible spray layer and inserts the inside in described tunnel and fixes.
Loose weak country rock tunnel the most according to claim 1 combined bolting and shotcrete structure, it is characterised in that: described flexible spray
Layer material is polyimides glue fat material, and thickness is 30-80mm.
Loose weak country rock tunnel the most according to claim 1 combined bolting and shotcrete structure, it is characterised in that: described anchor pole is
Left-handed twisted steel anchor rod without longitudinal rib, the spacing of anchor pole described in adjacent two rows is less than 1000mm.
Loose weak country rock tunnel the most according to claim 1 combined bolting and shotcrete structure, it is characterised in that: described anchor pole and
Anchor cable is internal with tunnel to be anchored by Anchor Agent.
Loose weak country rock tunnel the most according to claim 1 combined bolting and shotcrete structure, it is characterised in that: described anchor pole and
The end of anchor cable is connected with described steel band by pallet.
Loose weak country rock tunnel the most according to claim 5 combined bolting and shotcrete structure, it is characterised in that: described pallet chi
Very little for 300mm*300mm.
The construction method of loose weak country rock tunnel combined bolting and shotcrete structure the most according to claims 1 to 6, its feature exists
In: comprise the steps:
(1) roadway construction shapes；(2) surface, tunnel is sprayed flexible spray layer；(3) the flexible spray layer surface formed in step (2)
Steel band, and anchor pole of constructing are set；(4) construction anchor cable.
The construction method of loose weak country rock tunnel the most according to claim 7 combined bolting and shotcrete structure, it is characterised in that: step
Suddenly (3) stream line uses resin anchoring agent anchoring；Step (4) stream line uses resin anchoring agent anchoring.
9., according to the construction method of the loose weak country rock tunnel combined bolting and shotcrete structure described in claim 7 or 8, its feature exists
In: between described anchor pole and inside, tunnel, anchor force is not less than 100kN, and pretightning force is not less than 80kN.
10., according to the construction method of the loose weak country rock tunnel combined bolting and shotcrete structure described in claim 7 or 8, its feature exists
In: the anchor force between described anchor cable and tunnel is not less than 250kN, and pretightning force is not less than 150kN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610949200.0A CN106246202A (en) | 2016-11-01 | 2016-11-01 | A kind of loose weak country rock tunnel combined bolting and shotcrete structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610949200.0A CN106246202A (en) | 2016-11-01 | 2016-11-01 | A kind of loose weak country rock tunnel combined bolting and shotcrete structure and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106246202A true CN106246202A (en) | 2016-12-21 |
Family
ID=57600705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610949200.0A Pending CN106246202A (en) | 2016-11-01 | 2016-11-01 | A kind of loose weak country rock tunnel combined bolting and shotcrete structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106246202A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552731A (en) * | 2019-09-26 | 2019-12-10 | 中国矿业大学 | top coal caving stoping roadway grouting anchor cable supporting structure and advanced supporting method thereof |
| CN114233340A (en) * | 2021-12-14 | 2022-03-25 | 山西潞安环保能源开发股份有限公司漳村煤矿 | Water-leaching-preventing construction method for coal mine underground roadway roof |
| CN114427473A (en) * | 2022-01-24 | 2022-05-03 | 渭南陕煤启辰科技有限公司 | Method for improving support performance of broken surrounding rock anchor rod |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235720A (en) * | 2008-02-29 | 2008-08-06 | 李明远 | Excitated gap decompressed soft rock laneway support technology |
| CN101493011A (en) * | 2008-12-30 | 2009-07-29 | 中国科学院武汉岩土力学研究所 | Soft expansion type wall rock tunnel support method |
| CN103603675A (en) * | 2013-09-20 | 2014-02-26 | 张瀚 | Supporting method of permeable soft broken rock stratum roadway |
| CN104533453A (en) * | 2014-12-12 | 2015-04-22 | 山东科技大学 | Substep dynamic coupling support method for roadway fault fracture zone |
| CN206144571U (en) * | 2016-11-01 | 2017-05-03 | 何双龙 | Loose weak surrounding rock tunnel combined bolting and shotcrete structure |
-
2016
- 2016-11-01 CN CN201610949200.0A patent/CN106246202A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235720A (en) * | 2008-02-29 | 2008-08-06 | 李明远 | Excitated gap decompressed soft rock laneway support technology |
| CN101493011A (en) * | 2008-12-30 | 2009-07-29 | 中国科学院武汉岩土力学研究所 | Soft expansion type wall rock tunnel support method |
| CN103603675A (en) * | 2013-09-20 | 2014-02-26 | 张瀚 | Supporting method of permeable soft broken rock stratum roadway |
| CN104533453A (en) * | 2014-12-12 | 2015-04-22 | 山东科技大学 | Substep dynamic coupling support method for roadway fault fracture zone |
| CN206144571U (en) * | 2016-11-01 | 2017-05-03 | 何双龙 | Loose weak surrounding rock tunnel combined bolting and shotcrete structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552731A (en) * | 2019-09-26 | 2019-12-10 | 中国矿业大学 | top coal caving stoping roadway grouting anchor cable supporting structure and advanced supporting method thereof |
| CN114233340A (en) * | 2021-12-14 | 2022-03-25 | 山西潞安环保能源开发股份有限公司漳村煤矿 | Water-leaching-preventing construction method for coal mine underground roadway roof |
| CN114233340B (en) * | 2021-12-14 | 2024-02-13 | 山西潞安环保能源开发股份有限公司漳村煤矿 | Water spraying prevention construction method for coal mine underground roadway roof |
| CN114427473A (en) * | 2022-01-24 | 2022-05-03 | 渭南陕煤启辰科技有限公司 | Method for improving support performance of broken surrounding rock anchor rod |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161221 |
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| RJ01 | Rejection of invention patent application after publication |