CN108035752A - Coal road based on roof stability pushes up by force wall supporting anchor rod support method - Google Patents
Coal road based on roof stability pushes up by force wall supporting anchor rod support method Download PDFInfo
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- CN108035752A CN108035752A CN201711290734.8A CN201711290734A CN108035752A CN 108035752 A CN108035752 A CN 108035752A CN 201711290734 A CN201711290734 A CN 201711290734A CN 108035752 A CN108035752 A CN 108035752A
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- rock
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- coal
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- 239000003245 coal Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000011435 rock Substances 0.000 claims abstract description 67
- 239000000725 suspension Substances 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 5
- 238000004166 bioassay Methods 0.000 claims description 3
- 238000007619 statistical method Methods 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 238000004873 anchoring Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Structural Engineering (AREA)
- Food Science & Technology (AREA)
- Geochemistry & Mineralogy (AREA)
- Piles And Underground Anchors (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A kind of coal road based on roof stability pushes up by force wall supporting anchor rod support method, suitable for roadway support field.Back is divided into different zones, analyzes the core information of regional, so as to obtain the Rock Mass Integrality of top plate regional；By analyzing each domain test result, judge each region rock mass quality designation of top plate, when rock mass quality designation is more than preset value, then in the region, inside ceiling panel uniform vertical arranges more anchor poles or the single Enhanced support of anchor cable, and uniform vertical arranges more anchor poles in both sides coal side respective range.Suspension roof support array pitch greatly improved in the present invention, saves support time, hence it is evident that improves driving speed；Due to the increase of roofbolt intensity and length, the increase of bolt pretension, so that top plate forms the anchoring rock beam of adequate thickness, so as to improve tunnel overall stability, at the same time by the position transfer of side portion's surge pressure to close to coal wall side so that the relatively low Short bolt of coal side usable intensity is the deformation in portion of controllable side.
Description
Technical field
The present invention relates to a kind of coal roadway support technology, more particularly to the coal road based on roof stability to push up by force wall supporting anchor pole branch
Maintaining method.
Technical background
China's coal-mine passes through the high speed development in more than 40 years, and coal-mining technique realizes modernization and mechanization substantially, and
Tunnel only broken coal in process, coaling realizes mechanization with transporting coal, support process still leans on tactics of human sea.With high-yield and high-efficiency fully mechanized mining
Working face is quickly propelled, it is necessary to dig substantial amounts of tunnel in underground, according to incompletely statistics, state-owned large and medium-sized colliery is newly dug every year
Into tunnel total length be up to 8000km or so, 80% above is tunnel of the digging in coal seam, therefore, the speed of coal roadway tunneling
Coal mine excavation is directly influenced to take over.
In recent years, the extensive application with mechanical equipments such as development machine, continuous milling machine, anchor driving machines in tunnelling construction,
The Mechanization Level of tunnelling obtains a degree of lifting, but far can not meet site requirement, because the supporting in tunnel
Speed does not catch up with driving speed, and the time of suspension roof support accounts for total driving time than great.
The anchor pole rope combined supporting that present coal roadway support uses mostly, although disclosure satisfy that engineering site to a certain extent
Need, but support density is excessive, support process is complicated, and active support intensity is smaller so that roadway deformation amount is larger, hence it is evident that system
About driving speed, and the top plate that happens occasionally is across emitting accident.
The content of the invention
The purpose of the present invention is overcome the shortcomings of in prior art, there is provided a kind of coal road based on roof stability pushes up by force shield
Help anchor rod support method.
To realize above-mentioned technical purpose, the coal road of the invention based on roof stability pushes up by force wall supporting anchor rod support method,
It is as follows including step：Back is divided into different zones, the core-drilling in regional, analyzes the core of regional
Information, so as to obtain the Rock Mass Integrality of top plate regional；
If the region core integrality of detection exceedes preset value, judge this region rock stratum for more complete rock stratum or complete rock
Layer, uniaxial compressive test is carried out to this region core, by analyzing each domain test as a result, judging each region rock-mass quality of top plate
Index, when the region rock mass quality designation of acquisition is more than preset value, then in the region, inside ceiling panel uniform vertical arranges more anchors
Bar or the single Enhanced support of anchor cable, and uniform vertical arranges more anchor poles in both sides coal side respective range.
Detailed step is as follows：
A) back is divided into different zones, the core-drilling in regional, the joint in statistical analysis core
Crack f meters every, utilize formula：Kv=-0.0286f+0.836, obtains rock mass integrity index Kv, so that it is each to obtain top plate
The integrality of region rock mass；
B) as the region core Perfection Index Kv >=0.55 of detection, judge this region rock stratum for more complete rock stratum or complete
Whole rock stratum, by this region, core is processed into standard specimen, and the uniaxial compressive strength σ c of bioassay standard test specimen；
C) according to rock mass quality designation BQ formula：BQ=90+3 σ c+250Kv, calculate roof rock mass quality index BQ, work as top
During plate rock mass quality designation BQ≤451, roof rock mass is judged for soft rock or compared with soft rock, then using conventional bolt-grouting support；
D) as roof rock mass quality index BQ ＞ 451, roof rock mass is judged for hard rock or compared with hard rock, then in the region
Top plate uniform vertical arranges 4~6 anchor poles or the single Enhanced support of anchor cable, the uniform vertical in tunnel both sides coal side respective range
Arrange 3~4 anchor poles.
More than 1600MPa, rock-bolt length is 3.5m~5.0m for the roofbolt or anchor cable tensile strength；The side
For portion's anchor pole tensile strength more than 300MPa, rock-bolt length is 1.2m~2.0m.
The roofbolt or anchor cable need to be arranged vertically, it is allowed to which error is no more than 3 °；Side portion's anchor pole need to hang down
Straight arrangement, it is allowed to which error is no more than 5 °.
The suspension roof support array pitch is 1.5m~2.0m.
The roofbolt or anchor cable pretightning force 180kN~250kN；Portion of the side bolt pretension 60kN~
100kN。
Beneficial effect：
(1) after using the method for protecting support, by traditional supporting array pitch≤1m, directly bring up to more than array pitch 1.5m, significantly carry
High suspension roof support array pitch, saves support time, hence it is evident that improve coal roadway tunneling speed, while tunnel control effect is significantly
Improve, after unification supporting, the construction technology of tunnelling simplifies, and further increases driving speed.
(2) due to the increase of roofbolt intensity and length, the increase of bolt pretension, the sensitivity of anchor pole also can be significantly
Degree improves so that roof strata can realize multi-layer biaxially oriented linkage, so that top plate can form the anchoring rock beam of adequate thickness, improve
Tunnel overall stability.
(3) after top plate forms complete anchoring rock beam, the pressure of coal side can significantly be alleviated, while by side portion's surge pressure
Position transfer to close to coal wall side, so as to promote coal to help the transformation from " branch " to " shield " so that coal helps usable intensity relatively low
Short bolt is the deformation in portion of controllable side, side portion's support speed is so further improved, so as to improve the driving speed in tunnel.
Brief description of the drawings
Fig. 1 is support form and its roadway deformation schematic diagram in the prior art；
The coal road based on roof stability that Fig. 2 is the present invention pushes up by force wall supporting anchor rod support method and its roadway deformation signal
Figure.
In figure：1- tunnels；2- top plates；3- coals are helped；4- bottom plates；5- cracks；6- roofbolts or anchor cable；7- sides portion's anchor pole.
Embodiment
Further explanation is done to the present invention below in conjunction with the accompanying drawings：
As depicted in figs. 1 and 2, a kind of coal road of the invention pushes up by force wall supporting anchor rod support method step and is：By butt entry roof 2
Different zones are divided into, staff drills through 2 core of regional top plate, the core of analysis regional top plate 2 on bottom plate 4
Information, so as to obtain the Rock Mass Integrality of regional top plate 2；
If the region core integrality of detection exceedes preset value, judge this region rock stratum for more complete rock stratum or complete rock
Layer, uniaxial compressive test is carried out to this region core, by analyzing each domain test as a result, judging each region rock mass matter of top plate 2
Figureofmerit, when the region rock mass quality designation of acquisition is more than preset value, then arranges more in 2 uniform vertical of region inside ceiling panel
6 single Enhanced support of anchor pole or anchor cable, and help uniform vertical in 3 respective ranges to arrange more anchor poles 7 in both sides coal.
Detailed step is as follows：
A) 1 top plate 2 of tunnel is divided into different zones, the core-drilling in regional, the section in statistical analysis core
Crack 5 is managed, utilizes formula：Kv=-0.0286f+0.836, it is joint fissure (bar/m) to obtain rock mass integrity index Kv, f, from
And obtain the integrality of top plate regional rock mass；
B) as the region core Perfection Index Kv >=0.55 of detection, judge this region rock stratum for more complete rock stratum or complete
Whole rock stratum, by this region, core is processed into standard specimen, and the uniaxial compressive strength σ c of bioassay standard test specimen；
C) according to rock mass quality designation BQ formula：BQ=90+3 σ c+250Kv, calculate 2 rock mass quality designation BQ of top plate, when
During 2 rock mass quality designation BQ of top plate≤451,2 rock mass of top plate is judged for soft rock or compared with soft rock, then using conventional bolt-grouting support；
D) as 2 rock mass quality designation BQ ＞ 451 of top plate, 2 rock mass of top plate is judged for hard rock or compared with hard rock, then in the region
2 uniform vertical of inside ceiling panel arranges 6 single Enhanced support of more anchor poles or anchor cable, and helps uniformly to hang down in 3 respective ranges in both sides coal
Directly arrange more anchor poles 7,1 both sides coal is helped to be evenly arranged 3~4 anchor poles, 2 anchor pole of top plate in 3 respective ranges in tunnel
Or 6 tensile strength of anchor cable, more than 1600MPa, rock-bolt length is 3.5m~5.0m；7 tensile strength of side portion's anchor pole exceedes
300MPa, rock-bolt length are 1.2m~2.0m, and suspension roof support array pitch is 1.5m~2.0m.
2 anchor pole of top plate or anchor cable 6 need to be arranged vertically, it is allowed to which error is no more than 3 °；Side portion's anchor pole 7 needs
It is arranged vertically, it is allowed to which error is no more than 5 °.
The 6 pretightning force 180kN~250kN of 2 anchor pole of top plate or anchor cable；The 7 pretightning force 60kN of side portion's anchor pole~
100kN。
Claims (6)
1. a kind of coal road based on roof stability pushes up by force wall supporting anchor rod support method, it is characterized in that as follows including step：By lane
Road top plate is divided into different zones, the core-drilling in regional, analyzes the core information of regional, so as to obtain top plate
The Rock Mass Integrality of regional；
If the region core integrality of detection exceedes preset value, this region rock stratum is judged for more complete rock stratum or complete rock stratum,
Uniaxial compressive test is carried out to this region core, by analyzing each domain test as a result, judging that each region rock-mass quality of top plate refers to
Mark, when the region rock mass quality designation of acquisition is more than preset value, then in the region, inside ceiling panel uniform vertical arranges more anchor poles
Or the single Enhanced support of anchor cable, and uniform vertical arranges more anchor poles in both sides coal side respective range.
2. the coal road according to claim 1 based on roof stability pushes up by force wall supporting anchor rod support method, it is characterized in that in detail
Thin step is as follows：
A) back is divided into different zones, the core-drilling in regional, the joint fissure f in statistical analysis core
Every, rice, utilizes formula：Kv=- 0.0286f+0.836, obtains rock mass integrity index Kv, so as to obtain top plate regional rock
The integrality of body；
B) as the region core Perfection Index Kv >=0.55 of detection, judge this region rock stratum for more complete rock stratum or complete rock
Layer, by this region, core is processed into standard specimen, and the uniaxial compressive strength σ c of bioassay standard test specimen；
C) according to rock mass quality designation BQ formula：BQ=90+3 σ c+250Kv, calculate roof rock mass quality index BQ, when top plate rock
During constitution figureofmerit BQ≤451, roof rock mass is judged for soft rock or compared with soft rock, then using conventional bolt-grouting support；
D) as roof rock mass quality index BQ ＞ 451, roof rock mass is judged for hard rock or compared with hard rock, then in the region inside ceiling panel
Uniform vertical arranges 4~6 anchor poles or the single Enhanced support of anchor cable, the uniform vertical arrangement in tunnel both sides coal side respective range
3~4 anchor poles.
3. the coal road according to claim 2 based on roof stability pushes up by force wall supporting anchor rod support method, it is characterized in that：Institute
For the roofbolt or anchor cable tensile strength stated more than 1600MPa, rock-bolt length is 3.5m~5.0m；Portion of the side anchor pole tension
For intensity more than 300MPa, rock-bolt length is 1.2m~2.0m.
4. the coal road according to claim 2 based on roof stability pushes up by force wall supporting anchor rod support method, it is characterized in that：Institute
The roofbolt or anchor cable stated need to be arranged vertically, it is allowed to which error is no more than 3 °；Side portion's anchor pole need to be arranged vertically, it is allowed to
Error is no more than 5 °.
5. the coal road according to claim 2 based on roof stability pushes up by force wall supporting anchor rod support method, it is characterized in that：Institute
The suspension roof support array pitch stated is 1.5m~2.0m.
6. the coal road according to claim 2 based on roof stability pushes up by force wall supporting anchor rod support method, it is characterized in that：Institute
The roofbolt or anchor cable pretightning force 180kN~250kN stated；Portion of the side bolt pretension 60kN~100kN.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711290734.8A CN108035752A (en) | 2017-12-08 | 2017-12-08 | Coal road based on roof stability pushes up by force wall supporting anchor rod support method |
| PCT/CN2018/105350 WO2019109700A1 (en) | 2017-12-08 | 2018-09-13 | Anchor bolting method for enhancing roof stability using reinforced roof and side of coal roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711290734.8A CN108035752A (en) | 2017-12-08 | 2017-12-08 | Coal road based on roof stability pushes up by force wall supporting anchor rod support method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108035752A true CN108035752A (en) | 2018-05-15 |
Family
ID=62096100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711290734.8A Pending CN108035752A (en) | 2017-12-08 | 2017-12-08 | Coal road based on roof stability pushes up by force wall supporting anchor rod support method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108035752A (en) |
| WO (1) | WO2019109700A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109700A1 (en) * | 2017-12-08 | 2019-06-13 | 中国矿业大学 | Anchor bolting method for enhancing roof stability using reinforced roof and side of coal roadway |
| CN111259542A (en) * | 2020-01-15 | 2020-06-09 | 中国矿业大学 | Method for calculating impact resistance of anchoring support of roadway roof |
| CN111707548A (en) * | 2020-06-30 | 2020-09-25 | 中国矿业大学 | Anchor rod support effect evaluation method based on crack and energy evolution |
| CN117145477A (en) * | 2023-10-30 | 2023-12-01 | 华能煤炭技术研究有限公司 | Coal mining method with uniform subsidence of earth surface |
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| CN104806275A (en) * | 2015-02-12 | 2015-07-29 | 中铁工程装备集团有限公司 | Coal roadway rapid support method in unstable surrounding rock condition |
| CN106485031A (en) * | 2016-11-04 | 2017-03-08 | 青岛理工大学 | Optimal design method for reinforcing length of prestressed anchor rod of weathered rock slope |
| CN106570292A (en) * | 2016-11-14 | 2017-04-19 | 中建山东投资有限公司 | Super-large-cross-section tunnel-based surrounding rock classification method |
| CN107067333A (en) * | 2017-01-16 | 2017-08-18 | 长沙矿山研究院有限责任公司 | A kind of high altitudes and cold stability of the high and steep slope monitoring method |
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| CN103225510B (en) * | 2013-03-22 | 2016-05-18 | 上海建科工程咨询有限公司 | A kind of construction method of rock tunnel(ling) machine the risk of tunnel construction map |
| US20180112529A1 (en) * | 2015-04-10 | 2018-04-26 | Fero Group Pty Ltd | Improved Drilling Assembly Comprising a Friction Bolt |
| CN106780284B (en) * | 2016-12-28 | 2023-05-02 | 中铁工程装备集团有限公司 | Tunnel wall surrounding rock integrity information acquisition device and evaluation method |
| CN108035752A (en) * | 2017-12-08 | 2018-05-15 | 中国矿业大学 | Coal road based on roof stability pushes up by force wall supporting anchor rod support method |
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2017
- 2017-12-08 CN CN201711290734.8A patent/CN108035752A/en active Pending
-
2018
- 2018-09-13 WO PCT/CN2018/105350 patent/WO2019109700A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806275A (en) * | 2015-02-12 | 2015-07-29 | 中铁工程装备集团有限公司 | Coal roadway rapid support method in unstable surrounding rock condition |
| CN106485031A (en) * | 2016-11-04 | 2017-03-08 | 青岛理工大学 | Optimal design method for reinforcing length of prestressed anchor rod of weathered rock slope |
| CN106570292A (en) * | 2016-11-14 | 2017-04-19 | 中建山东投资有限公司 | Super-large-cross-section tunnel-based surrounding rock classification method |
| CN107067333A (en) * | 2017-01-16 | 2017-08-18 | 长沙矿山研究院有限责任公司 | A kind of high altitudes and cold stability of the high and steep slope monitoring method |
| CN107288670A (en) * | 2017-08-10 | 2017-10-24 | 中国神华能源股份有限公司 | A kind of method for protecting support that supporting is carried out to tunnel |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109700A1 (en) * | 2017-12-08 | 2019-06-13 | 中国矿业大学 | Anchor bolting method for enhancing roof stability using reinforced roof and side of coal roadway |
| CN111259542A (en) * | 2020-01-15 | 2020-06-09 | 中国矿业大学 | Method for calculating impact resistance of anchoring support of roadway roof |
| CN111259542B (en) * | 2020-01-15 | 2024-03-08 | 中国矿业大学 | Calculation method for impact resistance of tunnel roof anchoring support |
| CN111707548A (en) * | 2020-06-30 | 2020-09-25 | 中国矿业大学 | Anchor rod support effect evaluation method based on crack and energy evolution |
| CN111707548B (en) * | 2020-06-30 | 2021-08-27 | 中国矿业大学 | Anchor rod support effect evaluation method based on crack and energy evolution |
| CN117145477A (en) * | 2023-10-30 | 2023-12-01 | 华能煤炭技术研究有限公司 | Coal mining method with uniform subsidence of earth surface |
| CN117145477B (en) * | 2023-10-30 | 2024-01-30 | 华能煤炭技术研究有限公司 | Coal mining method with uniform subsidence of earth surface |
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| Publication number | Publication date |
|---|---|
| WO2019109700A1 (en) | 2019-06-13 |
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Application publication date: 20180515 |