CN1865660A - Construction method for weakening zone of floor plate wall rock - Google Patents
Construction method for weakening zone of floor plate wall rock Download PDFInfo
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- CN1865660A CN1865660A CN 200610088039 CN200610088039A CN1865660A CN 1865660 A CN1865660 A CN 1865660A CN 200610088039 CN200610088039 CN 200610088039 CN 200610088039 A CN200610088039 A CN 200610088039A CN 1865660 A CN1865660 A CN 1865660A
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- 239000011435 rock Substances 0.000 title claims abstract description 35
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 230000003313 weakening effect Effects 0.000 title claims description 16
- 238000005422 blasting Methods 0.000 claims description 5
- 238000004880 explosion Methods 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims description 2
- 230000005641 tunneling Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 3
- 238000005065 mining Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 2
- 241001282153 Scopelogadus mizolepis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention relates to a construction method in weak wall rock area. Wherein, it arranges stress transfer channel in the channel bottom plate, and loosing explodes at the bottom corner of said stress transfer channel to form one weak wall rock area; via said area, the high developing stress in the upper coal bed can be transmitted into the deep part of wall rock, and the developing stress in the bottom plate can be reduced, to effectively control the bottom drum. The invention has simple process and significant stress reduction effect, with wider application.
Description
Technical field
The present invention relates to a kind of construction method of weakening zone of floor plate wall rock, be particularly useful for controlling coal mine roadway, pucking and the surrouding rock deformation of chamber when influenced by superjacent mining effect or other dynamic pressure is controlled, and also is applicable to the surrouding rock deformation of control in other heavily stressed underground construction.
Background technology
When coal mine roadway is subjected to seam mining and influences,, therefore very easily cause the serious pucking in tunnel in roadway surrounding rock because the mining induced stress that causes generally can reach 2～6 times of the stress of primary rock.Concerning some are equipped with the chamber of big scale fixed equipments, if bigger pucking takes place, will cause the fixed equipment basic slope, influence the use of equipment, bring serious threat to the safety in production of mine.At this class problem, the main at present measure of adopting has: add methods such as anchor pole (rope), floor grouting, concrete anti-arch, joint-cutting, boring at base plate and reinforce or release.Though these methods can obtain the effect of certain control surrouding rock deformation, control pucking effect is relatively poor, especially under the heavily stressed situation that exploitation causes, poorer to the control effect of pucking.
Summary of the invention
Technical problem: the construction method that the purpose of this invention is to provide a kind of weakening zone of floor plate wall rock, digging stress transfer tunnel, both sides under chamber or roadway floor, and carry out loosening blasting at base angle, stress transfer tunnel, make the country rock atenuator region that forms a proper range in the base plate, thereby effectively control the pucking in chamber or tunnel.
Technical scheme: the construction method of a kind of weakening zone of floor plate wall rock of the present invention, at first distance chamber or roadway floor vertically downward the degree of depth be the H value, apart from chamber or the outside L in outer wall both sides, tunnel
1Two stress transfer tunnels of distance digging, the length in stress transfer tunnel is consistent with the length in protection section chamber or tunnel, and chamber or roadway floor distance H vertically downward is 3～5m, the distance L in chamber or tunnel outer wall and stress transfer tunnel, both sides
1Be 0.8～1.5m; Bore respectively in the both sides in every stress transfer tunnel that to become α angle, length with horizon be L
2The big gun hole, the horizontal sextant angle α in the big gun hole that place, the base angle, both sides in stress transfer tunnel is drilled with is 20～40 °, length L
2Being 2～3m, can be one in the big gun hole of stress transfer tunnel two sidetrackings, also can be two, and when the big gun hole was two, big gun hole was located at the place, base angle, and another big gun hole is located at the lane and helps, and apart level height h is 0.5～1m between the two big gun holes; Bore the big gun hole successively along every stress transfer tunnelling direction both sides, the axial distance between the big gun hole is S, and the axial distance S that axially spuds in successively along the stress transfer tunnel between the big gun hole is 0.8～1.5m; In all big gun holes, put explosive and carry out explosion, make the base plate that to protect chamber or tunnel form a weakening zone of floor plate wall rock that comprises stress transfer tunnel and loosening blasting scope, thereby claimed chamber or tunnel are protected in stress low value district.
Beneficial effect: the construction method of a kind of weakening zone of floor plate wall rock of the present invention is best suited under the control mining influence under chamber or the tunnel and other conditions of similarities the pucking control and the surrouding rock deformation of underground construction and controls.By digging stress transfer tunnel in the both sides certain limit under protected chamber or roadway floor; and carry out loosening blasting at base angle, stress transfer tunnel; make the country rock atenuator region that forms a proper range in chamber or the roadway floor; because the existence in this zone; can effectively reduce the intensity that to protect mining induced stress in chamber or the roadway surrounding rock; transmit the intensity of stress when reducing seam mining significantly to chamber group angle; protected chamber is in the relatively low stressed zone; thereby significantly improve surrounding rock of chamber stress distribution situation, reduce surrounding rock of chamber deflection and pucking.This method solves heavily stressed problem from the Stress Control angle, and method is simple, and easy construction is effective, can effectively control heaving of base plate, has practicality widely in the present technique field.
Description of drawings
Fig. 1 is the transverse sectional view of constructing of weakening zone of floor plate wall rock of the present invention.
Fig. 2 be weakening zone of floor plate wall rock of the present invention construct the longitudinal cross-section schematic diagram.
Among the figure: 1-chamber or tunnel, 2-stress transfer tunnel, 3-big gun hole 4-weakening zone of floor plate wall rock
The specific embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are further described:
The construction method of a kind of weakening zone of floor plate wall rock of the present invention, apart from the chamber that will protect or tunnel 1 base plate downward vertically distance H be that horizontal direction driving 2, the two stress transfer tunnels 2, two stress transfer tunnels of 4.0m are respectively apart from protecting chamber outside horizontal range L
1Be 1.0m, two stress transfer tunnels 2 are rectangular cross section, and it is wide to be 3m, and height is 2m, and section also can be circular, arch or trapezoidal.The length that rectangular stress shifts tunnel 2 with to protect chamber length identical, if protect chamber length to be all 40m mutually, then stress transfer tunnel 2 also is 40m.After roadway construction finished, creep into two angle, length L that become 30 ° with horizon respectively in the both sides that every rectangular stress shifts tunnel 2
2For 3, one big gun holes, big gun hole of 2.5m are arranged in place, base angle, tunnel, another big gun hole is arranged in the lane and helps, and two borehole spacing height are 0.8m.Shift 2 tunneling directions, two sidetracking big gun holes 3, tunnel along rectangular stress according to this, spacing distance between the big gun hole 3 is 1.0m, adorns 2 volume aqueous gels then in each big gun hole 3, uses the yellow mud sealing of hole, adopt the forward charging means to carry out explosion successively, finish until whole blast working.So just in the base plate that will protect chamber, formed a country rock atenuator region 4 that comprises stress transfer tunnel 2 and loosening blasting scope.Because the existence in this zone; effectively reduce the intensity that to protect mining induced stress in the surrounding rock of chamber; help the angle to transmit the intensity of stress to chamber or tunnel 1 when reducing seam mining significantly; protected chamber or tunnel 1 are in the relatively low stressed zone; thereby significantly improve chamber or tunnel 1 surrouding rock stress distribution situation; reduce the deflection and the pucking of chamber or tunnel 1 country rock, reach the purpose of effective control chamber pucking.
Claims (5)
1, a kind of construction method of weakening zone of floor plate wall rock is characterized in that:
1) at first distance chamber or tunnel (1) base plate vertically downward the degree of depth be the H value, apart from chamber or tunnel (1) the outside L in outer wall both sides
1Distance digging two stress transfer tunnels (2), the length of stress transfer tunnel (2) is consistent with the length of protection section chamber or tunnel (1);
2) bore respectively in the both sides in every stress transfer tunnel (2) that to become α angle, length with horizon be L
2Big gun hole (3);
3) bore big gun hole (3) successively along tunneling direction both sides, every stress transfer tunnel (2), the axial distance between big gun hole (3) is S;
4) in all big gun holes (3), put explosive and carry out explosion; make the base plate that to protect chamber or tunnel (1) form a weakening zone of floor plate wall rock (4) that comprises stress transfer tunnel and loosening blasting scope, thereby claimed chamber or tunnel (1) are protected in stress low value district.
2. the construction method of weakening zone of floor plate wall rock according to claim 1, it is characterized in that: chamber or tunnel (1) base plate distance H vertically downward is 3～5m, the distance L in chamber or tunnel (1) outer wall and stress transfer tunnel, both sides (2)
1Be 0.8～1.5m.
3. the construction method of weakening zone of floor plate wall rock according to claim 1 and 2 is characterized in that: the horizontal sextant angle α in the big gun hole (3) that the place, base angle, both sides of stress transfer tunnel (2) is drilled with is 20～40 °, length L
2Be 2～3m.
4. the construction method of weakening zone of floor plate wall rock according to claim 1 and 2, it is characterized in that: the big gun hole (3) of (2) two sidetrackings can be one in the stress transfer tunnel, also can be two, when big gun hole (3) are two, a big gun hole (3) is located at the place, base angle, another big gun hole (3) is located at the lane and helps, and apart level height h is 0.5～1m between the two big gun holes (3).
5. the construction method of weakening zone of floor plate wall rock according to claim 1 and 2, it is characterized in that: the axial distance S that axially spuds in successively between the big gun hole (3) along stress transfer tunnel (2) is 0.8～1.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610088039 CN1865660A (en) | 2006-06-16 | 2006-06-16 | Construction method for weakening zone of floor plate wall rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610088039 CN1865660A (en) | 2006-06-16 | 2006-06-16 | Construction method for weakening zone of floor plate wall rock |
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| Publication Number | Publication Date |
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| CN1865660A true CN1865660A (en) | 2006-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610088039 Pending CN1865660A (en) | 2006-06-16 | 2006-06-16 | Construction method for weakening zone of floor plate wall rock |
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| CN (1) | CN1865660A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886545A (en) * | 2010-07-05 | 2010-11-17 | 北京科技大学 | Method for treating bottom heave of soft rock roadway by using micro broken stone pipe cast pile |
| CN101915108A (en) * | 2010-06-22 | 2010-12-15 | 中国矿业大学 | Method for controlling floor heave of dynamic pressure tunnel |
| CN101922902A (en) * | 2009-06-11 | 2010-12-22 | 淮南矿业(集团)有限责任公司 | Method for weakening strength of hard rock |
| CN101936172A (en) * | 2010-08-06 | 2011-01-05 | 中国矿业大学 | Governance method of floor heave of mine roadway during mining |
| CN101737056B (en) * | 2009-12-01 | 2011-08-10 | 中国矿业大学(北京) | Deep stope automatic lane forming method |
| CN102288076A (en) * | 2011-09-02 | 2011-12-21 | 天地科技股份有限公司 | Method for controlling laneway floor heave through deep-hole section blasting |
| CN102518447A (en) * | 2011-11-17 | 2012-06-27 | 山东盛泉矿业有限公司 | Roadway layout method for controlling roadway floor heave |
| CN103291327A (en) * | 2013-05-07 | 2013-09-11 | 中国矿业大学 | Steel pile method for controlling floor heave of gob-side entry retaining |
| CN103982204A (en) * | 2014-05-15 | 2014-08-13 | 攀钢集团工程技术有限公司 | Funneling construction method of high and large chamber |
| WO2016107435A1 (en) * | 2014-12-29 | 2016-07-07 | 中国矿业大学 | Method operating outside of passageway for optimizing passageway regional stress field |
| CN108278940A (en) * | 2018-01-24 | 2018-07-13 | 中国矿业大学 | High stress tunnel country rock liquid phase plasma unloading pressure by blasting method |
| CN109458182A (en) * | 2019-01-08 | 2019-03-12 | 贵州大学 | A kind of control method for Floor Heave in Roadway |
-
2006
- 2006-06-16 CN CN 200610088039 patent/CN1865660A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922902A (en) * | 2009-06-11 | 2010-12-22 | 淮南矿业(集团)有限责任公司 | Method for weakening strength of hard rock |
| CN101922902B (en) * | 2009-06-11 | 2012-12-12 | 淮南矿业(集团)有限责任公司 | Method for weakening strength of hard rock |
| CN101737056B (en) * | 2009-12-01 | 2011-08-10 | 中国矿业大学(北京) | Deep stope automatic lane forming method |
| CN101915108A (en) * | 2010-06-22 | 2010-12-15 | 中国矿业大学 | Method for controlling floor heave of dynamic pressure tunnel |
| CN101886545A (en) * | 2010-07-05 | 2010-11-17 | 北京科技大学 | Method for treating bottom heave of soft rock roadway by using micro broken stone pipe cast pile |
| CN101936172B (en) * | 2010-08-06 | 2012-06-27 | 中国矿业大学 | Governance method of floor heave of mine roadway during mining |
| CN101936172A (en) * | 2010-08-06 | 2011-01-05 | 中国矿业大学 | Governance method of floor heave of mine roadway during mining |
| CN102288076A (en) * | 2011-09-02 | 2011-12-21 | 天地科技股份有限公司 | Method for controlling laneway floor heave through deep-hole section blasting |
| CN102518447B (en) * | 2011-11-17 | 2014-07-30 | 山东盛泉矿业有限公司 | Roadway layout method for controlling roadway floor heave |
| CN102518447A (en) * | 2011-11-17 | 2012-06-27 | 山东盛泉矿业有限公司 | Roadway layout method for controlling roadway floor heave |
| CN103291327A (en) * | 2013-05-07 | 2013-09-11 | 中国矿业大学 | Steel pile method for controlling floor heave of gob-side entry retaining |
| CN103982204A (en) * | 2014-05-15 | 2014-08-13 | 攀钢集团工程技术有限公司 | Funneling construction method of high and large chamber |
| CN103982204B (en) * | 2014-05-15 | 2016-01-06 | 攀钢集团工程技术有限公司 | A kind of funneling construction method of high Large chamber |
| WO2016107435A1 (en) * | 2014-12-29 | 2016-07-07 | 中国矿业大学 | Method operating outside of passageway for optimizing passageway regional stress field |
| CN108278940A (en) * | 2018-01-24 | 2018-07-13 | 中国矿业大学 | High stress tunnel country rock liquid phase plasma unloading pressure by blasting method |
| CN109458182A (en) * | 2019-01-08 | 2019-03-12 | 贵州大学 | A kind of control method for Floor Heave in Roadway |
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