CN104712348A - Large-mining-height working face gob-side small pillar roadway supporting method under hard immediate roof - Google Patents

Large-mining-height working face gob-side small pillar roadway supporting method under hard immediate roof Download PDF

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Publication number
CN104712348A
CN104712348A CN201410755207.XA CN201410755207A CN104712348A CN 104712348 A CN104712348 A CN 104712348A CN 201410755207 A CN201410755207 A CN 201410755207A CN 104712348 A CN104712348 A CN 104712348A
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China
Prior art keywords
fault block
immediate roof
roof
fender
hard
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Granted
Application number
CN201410755207.XA
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CN104712348B (en
Inventor
蒋金泉
代进
王春耀
崔庆林
郑有雷
孙振中
桂兵
秦广鹏
孟庆新
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Shandong University of Science and Technology
Yanzhou Coal Mining Co Ltd
Yanzhou Coal Industry Co Ltd
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Shandong University of Science and Technology
Yanzhou Coal Industry Co Ltd
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Application filed by Shandong University of Science and Technology, Yanzhou Coal Industry Co Ltd filed Critical Shandong University of Science and Technology
Priority to CN201410755207.XA priority Critical patent/CN104712348B/en
Publication of CN104712348A publication Critical patent/CN104712348A/en
Application granted granted Critical
Publication of CN104712348B publication Critical patent/CN104712348B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts

Abstract

The invention discloses a large-mining-height working face gob-side small pillar roadway supporting method under a hard immediate roof. The method is characterized by comprising the steps that 1, lengthened anchor rods are used for lengthening and anchoring two roadway coal walls; 2, composite supporting is carried out on shoulder roofs close to the two roadway coal walls through shear-resisting anchor rods and shear-resisting anchor ropes, and shear-resisting pipes of the shear-resisting anchor rods and the shear-resisting anchor ropes are used for restraining the shearing force of the surface of the rock stratum of the shoulder roofs or the shearing force between fractures; 3, high-intensity anchor ropes are used in the middle of the roadway to anchor a coal seam roof, a soft rock roof or a composite roof to the hard roof, the bending degree is reduced, and bending failure is prevented. The anchor rods with different properties are used according to the deformation characteristics of different portions, construction is simple and convenient, the construction speed is high, the work efficiency is high, the control effect of the soft rock roof, the composite roof and a breaking roof in the deep mining process is good, the bearing capacity of a supporting structure is high, and the roadway repair rate is low.

Description

Under a kind of hard immediate roof, large-mining-height working surface is along empty fender laneway support method
Technical field
The present invention relates to coal mine roadway safeguard and along empty fender stable problem, under being specifically related to a kind of hard immediate roof, large-mining-height working surface is along empty fender Roadway Support Technology.
Background technology
After upper curtate working face mining, the formation of gob side entry position overburden structure is relevant to the character of roof strata, thickness and mining height.Under the high hard immediate roof condition of thick seam large mining, the structural system that above fender gob side entry top board, often formation fault block A, B, C is as shown in Figure 1 hinged, after fault block B turns round, one end is hinged with fault block A above gob side entry top board, the other end touches cash in goaf, with the fault block C articulated structure in goaf, form relatively stable masonry girder construction.When masonry girder construction and the overburden structure on it keep stablizing, whole roof toad is passed to tunnel entity coal side coal body by top board structure, makes the bearing pressure that its large area subjects high strength, needs its strengthening supporting; When between fault block, articulated structure is damaged, stability along empty fender will be damaged, make gob side entry show as back uneven subsidence, the broken destruction, two of rising of coal column is helped to shift near, Floor Heave in Roadway, need to carry out supporting to along empty fender and upper crucial fault block B thereof, to guarantee gob side entry and stablizing along empty coal column.
Summary of the invention
For solving the problems of the technologies described above, the invention provides one for large-mining-height working surface under hard immediate roof along empty fender laneway support method, stop tight roof fault block on the impact along empty fender stability by comprehensively have employed six each and every one measures, compared with prior art, there is the advantage that supporting intensity is high, supporting effect good, cost is low.
For achieving the above object, the present invention adopts following technological means:
Under a kind of hard immediate roof, large-mining-height working surface is along empty fender laneway support method, it is characterized in that: realized by following steps:
For the articulated structure that fender gob side entry hard immediate roof fault block A, fault block B and fault block C are mutual, with hard immediate roof geosutures---the hinge lines of fault block A and fault block B is that bound pair back load carries out unbalanced support:
The top board that top is protected in construction on the top board of geosutures both sides strengthens anchor pole, makes hard immediate roof fault block and the rock mass of fault block near biting point be triaxial stress state, guarantees fault block B, fault block A keeps stable hinged relationship on geosutures;
At the suspention anchor cable of hard immediate roof geosutures along certain density that empty side top board is constructed, hard immediate roof fault block B above empty fender is suspended in and covers on base object model rock stratum, after preventing articulated structure accidental destruction, fault block B destroys the generation along empty fender;
The combination of steel rope of certain density that hard immediate roof geosutures fault block A entity coal side top board is constructed, is combined into entirety by fault block A hard for entity coal side, avoids geosutures biting point vertical load to the destruction of bending, the absciss layer of fault block A;
Use fender to strengthen anchor pole to give along empty fender, with enough horizontal anchored force, to make hard immediate roof fault block load on it be in balance along all mechanical relationships that empty fender internal crack face is formed;
Use bottom empty fender, locate anchor cable, will be fixed between tight roof and seat earth along empty fender along location, empty fender top anchor cable, balance by the anchored force and the broken horizontal thrust produced that rises of filing gangue in mined-out area of locating anchor cable, prevent from moving in tunnel along empty fender entirety, and produce floor lift in gallery phenomenon;
Adopt the method for lateral wall anchor pole, lateral wall anchor cable coupling supporting, balance the destruction that its high bearing pressure is helped tunnel coal.
Further, protect top anchor pole and use total length bond-anchorage, provide enough first anchor-holds to hard immediate roof.
Further, construct according to the elevation angle along location, empty fender top anchor cable, be deep into hard immediate roof fault block B(8) more than 1m in rock stratum; Bottom empty fender, locate anchor cable adopt angle of depression construction, be deep into more than 1m in floor strata.
Further, the load that bears of anchor cable and support density computational methods are suspended in midair:
Pin joint is the half of fault block B gravity along the load Q that anchor cable in the roadway direction unit length of empty side bears, and is:
In formula: the load that in Q-roadway direction unit length, anchor cable bears, kN/m;
L-upper curtate roof periodic water component, m;
H-hard immediate roof thickness, m;
The body force of γ-hard immediate roof rock stratum, kN/m 3;
S-upper curtate face length, m;
Pin joint, along empty side, guarantees that the cable bolting density that hard immediate roof fault block B stablizes along roadway direction is:
In formula: the load that in-roadway direction unit length, anchor cable bears, kN/m;
the ultimate load of-single anchor cable, kN/m.
Operating principle and the beneficial effect of the invention show:
For the physical condition of the mutual articulated structure of fender gob side entry hard immediate roof fault block A, fault block B and fault block C, with hard immediate roof geosutures (hinge lines of fault block A and fault block B) for bound pair back load carries out unbalanced support.The lateral wall coal body of entity coal side, tunnel is carrying main body, carries the load summation that upper curtate goaf whole overlying rock mechanical balance structure and hard immediate roof fault block are transmitted by pin joint; Tunnel is along the above-mentioned load generally not bearing upper curtate goaf top plate along empty fender of empty side, only have when hard immediate roof fault block is when taking off hinge with the hard immediate roof in entity coal side above back, just bear hard immediate roof fault block transmit fractional load, generally along empty fender only bear upper curtate filing gangue in mined-out area broken swollen time aspect thrust load.
On the top board of geosutures both sides, the top board enhancing anchor pole on top is protected in construction, hard immediate roof fault block and the rock mass of fault block near biting point is made to be triaxial stress state, improve its force environment, improve the intensity that it is anti-extrusion, and then safeguard the stability of the hard immediate roof of gob side entry near geosutures, prevent the hard immediate roof near biting point from being squeezed bad by powerful horizontal compression, guarantee the hinged relationship that two fault blocks keep stable on geosutures.
At the suspention anchor cable of hard immediate roof geosutures along certain density that empty side top board is constructed, hard immediate roof fault block above empty fender is suspended in and covers on base object model rock stratum, after preventing articulated structure accidental destruction, hard immediate roof fault block destroys the generation along empty fender.
The combination of steel rope of certain density that hard immediate roof geosutures entity coal side top board is constructed, is combined into entirety by hard for entity coal side immediate roof, avoids geosutures biting point plummet load to the destruction of bending, the absciss layer of hard immediate roof.
Use fender to strengthen anchor pole to give along empty fender with enough horizontal anchored force, all mechanical relationships that on it, hard immediate roof fault block load is formed on fender body internal crack face are made to be in balance, stop in little coal body and produce the changing of the relative positions between fissure-plane, keep the long-term stability of fender body whereby.Strengthen and along empty fender, there is ability in hard immediate roof fault block hinged instability status lower support hard immediate roof fault block weight 2/3rds on it after bolt anchorage, guarantee when the hard immediate roof of immediate roof fault block hard above empty fender and entity coal side, tunnel surprisingly de-cut with scissors time, can not be damaged because of its overload along empty fender.
Use location anchor cable will be fixed between tight roof and seat earth along empty fender, balance by the anchored force and the broken horizontal thrust produced that rises of filing gangue in mined-out area of locating anchor cable, prevent from moving in tunnel along empty fender entirety, and produce floor lift in gallery phenomenon.Location, top anchor cable is constructed according to the elevation angle, is deep into more than 1m in hard immediate roof fault block rock stratum; Location, bottom anchor cable adopts angle of depression construction, is deep into more than 1m in floor strata.
Upper curtate goaf whole overlying rock mechanical balance structure and hard immediate roof fault block load is born on a large scale for tunnel entity coal lateral wall coal body, the feature that bearing pressure intensity is high, adopt the method for lateral wall anchor pole, lateral wall anchor cable coupling supporting, balance the destruction that its high bearing pressure is helped tunnel coal.
Protect top anchor pole and should use total length bond-anchorage, provide enough first anchor-holds to hard immediate roof.
The load that pin joint outer empty side suspention anchor cable bears and support density are calculated as follows:
Pin joint is the half of fault block B gravity along the load Q that anchor cable in the roadway direction unit length of empty side bears, and is:
In formula: the load that in Q-roadway direction unit length, anchor cable bears, kN/m;
L-upper curtate roof periodic water component, m;
H-hard immediate roof thickness, m;
The body force of γ-hard immediate roof rock stratum, kN/m 3;
S-upper curtate face length, m;
Pin joint, along empty side, guarantees that the cable bolting density that hard immediate roof fault block B stablizes along roadway direction is:
In formula: the load that in-roadway direction unit length, anchor cable bears, kN/m;
the ultimate load of-single anchor cable, kN/m.
Use total length bond-anchorage along in empty fender perpendicular to the enhancing anchor pole of upper, provide enough level just anchor-holds to fender.
Operating principle of the present invention and beneficial effect show:
The main difference of the present invention and traditional laneway support method comprehensively have employed six measures to stop tight roof fault block on the impact along empty fender stability:
One of measure is top board enhancing anchor pole of constructing on the top board of geosutures both sides, the rock mass near hard immediate roof fault block biting point is made to be triaxial stress state, improve its force environment, improve the intensity that it is anti-extrusion, and then safeguard the stability of the hard immediate roof of gob side entry near geosutures, prevent the hard immediate roof near biting point from being squeezed bad by powerful horizontal compression;
Measure two adopts suspention anchor cable in the disrumpent feelings hinged place of hard immediate roof along empty side, is suspended in by the immediate roof fault block above fender and covers in base object model rock stratum, solves hard immediate roof fault block after the unexpected unstability of pin joint to the impact along empty fender stability;
Measure three adopts combination to strengthen anchor cable in the disrumpent feelings pin joint entity coal side of hard immediate roof, solve the problem that absciss layer, bending-buckling occur tight roof fault block under pin joint extruding force and vertical force comprehensive function, protect the stable of the articulated structure between adjacent fault block;
Four of measure adopts fender to strengthen anchor pole, provided enough horizontal anchored force, stop in coal body and produce the changing of the relative positions between fissure-plane along empty fender, avoids coal column to produce destructive brokenly to rise, and keeps it long-term stable;
Measure five uses location anchor cable will be fixed between tight roof and seat earth along empty coal column, prevents from moving in coal column integral level;
Six of measure is the regions being subject to upper curtate goaf whole overlying rock mechanical balance structure and the effect of hard immediate roof fault block load for tunnel entity coal side large area, adopt the coupling supporting of coal side anchor pole and side anchor cable, the destruction that balance high bearing pressure is helped tunnel coal.
By the enforcement of six measures; stable mechanical structure is defined above gob side entry top board; prevent upper curtate goaf top plate fault block on the impact of gob side entry and fender, achieve the unbalanced support of both sides, tunnel top board, protect the stability along empty fender.
Accompanying drawing explanation
Fig. 1 is the invention supporting and protection structure schematic diagram;
1. gob side entry; 2. along empty fender; 3. locate anchor cable bottom fender; 4. goaf; 5. little coal strengthens anchor pole; 6. location, fender top anchor cable; 7. fault block C; 8. fault block B; 9. top board strengthens anchor pole; 10. suspend anchor cable in midair; 11. combination of steel ropes; 12. fault block A; Base object model rock stratum is covered on 13.; 14. lateral wall anchor poles; 15. lateral wall anchor cables; 16. entity coal lateral wall coal bodies.
Detailed description of the invention
The correlation technique content do not addressed below all can adopt or use for reference prior art.
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.
In process of coal mining, the immediate roof on gob side entry 1 can form three fault blocks according to after the position fracture of exploitation: immediate roof fault block A12, immediate roof fault block B8, immediate roof fault block C7; The position relationship of three as shown in Figure 1.
Base object model rock stratum 13 is covered on above immediate roof being.
Upper curtate goaf, hard fault block (immediate roof fault block C7, fault block B8, fault block A12 etc.), on cover base object model rock stratum 13 and form semi-arched masonry beam sillar articulated structure with the top board of entity coal side, tunnel.
Tunnel entity coal lateral wall coal body 16 is the high arch springing of semi-arched masonry beam, the carrying main body of semi-arched masonry beam, carry upper curtate goaf whole on cover the load summation that base object model rock stratum 13 mechanical balance structure and hard immediate roof fault block B8 transmitted by pin joint.
Tunnel 1 is along the above-mentioned load generally not bearing upper curtate goaf top plate along empty fender 2 of empty side, only have when hard immediate roof fault block B8 is when taking off hinge with entity coal side immediate roof fault block A12 above back, just bear the fractional load that hard immediate roof fault block B8 transmits, the filling waste rock generally only bearing goaf 4 along empty fender 2 broken swollen time horizontal thrust load.
Under the hard immediate roof of the invention, large-mining-height working surface is along empty fender laneway support method, adopts following supporting means:
First: for the actual conditions of the hard immediate roof geosutures in upper curtate goaf above gob side entry top board, in gob side entry with hard immediate roof geosutures for bound pair back load carry out unbalanced support, concrete supporting method is as follows:
(1) top board protecting top of constructing on geosutures (immediate roof fault block A12 and immediate roof fault block B8) both sides top board strengthens anchor pole 9.
On the top board of geosutures both sides, the top board enhancing anchor pole 9 on top is protected in construction, improve the stress of top board near immediate roof fault block A12 and immediate roof fault block B8 biting point, the rock mass near biting point is made to be triaxial stress state, geosutures keep stable hinged relationship, maintain the stability of gob side entry top board near geosutures, prevent the top board near biting point from being squeezed bad by powerful horizontal compression, improve its anti-extrusion ability.
(2) in the side of hard immediate roof geosutures, namely at the suspention anchor cable 10 of immediate roof fault block B8 along certain density that empty side top board is constructed, suspention anchor cable 10 penetrate hard immediate roof fault block 8 on cover in base object model rock stratum 13, hard immediate roof fault block B8 above empty fender 2 is suspended in and covers on base object model rock stratum 13, after preventing pin joint accidental destruction, hard immediate roof fault block B8 is to the destruction along empty fender 2.
(3) combination of steel rope 11 of certain density of constructing on hard immediate roof geosutures entity coal side top board, hard for entity coal side immediate roof fault block A12 is combined into entirety, avoids geosutures biting point plummet load to the destruction of bending, the absciss layer of hard immediate roof fault block A12.
The second, safeguard along empty fender 2: fender uses fender strengthen side anchor pole 5.
By safeguarding along empty fender 2, make it have the ability in hinged its weight load 2/3rds of instability status lower support of hard immediate roof fault block B8, object is, when above empty fender 2, hard immediate roof fault block B8 and entity coal side, tunnel hard immediate roof fault block A12 departs from hinged relationship, to be damaged along empty fender 2 because of its overload.
Simultaneously, use fender to strengthen side anchor pole 5 to give along empty fender 2 with enough horizontal anchored force, all mechanical relationships that on it, hard immediate roof fault block 8 load is formed on fender body internal crack face are made to be in balance, stop between fissure-plane and produce the changing of the relative positions, keep the long-term stability along empty fender body 2 whereby.
3rd, locate anchor cable 3 bottom fender, location, fender top anchor cable 6 is separately fixed at along the bottom of empty fender 2 and top between hard immediate roof fault block B 8 and seat earth.
Balancing with locating anchor cable 3, the fender top location anchored force of anchor cable 6 and the broken horizontal thrust produced that rises of goaf 4 filling waste rock bottom fender, preventing from moving in gob side entry 1 along empty fender 2 entirety, and producing floor lift in gallery phenomenon.
4th, 16 large area are helped to be subject to upper curtate goaf whole overlying rock mechanical balance structure and the effect of hard immediate roof fault block load for tunnel entity coal, the feature that bearing pressure intensity is high, adopt the method for lateral wall anchor pole 14, lateral wall anchor cable 15 coupling supporting, balance the destruction that its high bearing pressure is helped tunnel coal.
The load that pin joint outer empty side suspention anchor cable 10 bears and support density are calculated as follows:
Pin joint is the half of fault block B gravity along the load Q that anchor cable in the roadway direction unit length of empty side bears, and is:
In formula: the load that in Q-roadway direction unit length, anchor cable bears, kN/m;
L-upper curtate roof periodic water component, m;
H-hard immediate roof thickness, m;
The body force of γ-hard immediate roof rock stratum, kN/m 3;
S-upper curtate face length, m;
Pin joint, along empty side, guarantees that the cable bolting density that hard immediate roof fault block B stablizes along roadway direction is:
In formula: the load that in-roadway direction unit length, anchor cable bears, kN/m;
the ultimate load of-single anchor cable, kN/m.
The above is only the preferred embodiment of the application, those skilled in the art is understood or realizes the application.To be apparent to one skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (4)

1. under hard immediate roof, large-mining-height working surface, along an empty fender laneway support method, be is characterized in that: realized by following steps:
For fender gob side entry hard immediate roof fault block A(12), fault block B(8) and fault block C(7) mutual articulated structure, with hard immediate roof geosutures---fault block A(12) with fault block B(8) hinge lines be that bound pair back load carries out unbalanced support:
On the top board of geosutures both sides, top board enhancing anchor pole (9) on top is protected in construction, make hard immediate roof fault block (12) and fault block (8) rock mass near biting point be triaxial stress state, guarantee fault block B(8), fault block A(12) on geosutures, keep stable hinged relationship;
At the suspention anchor cable (10) of hard immediate roof geosutures along certain density that empty side top board is constructed, hard immediate roof fault block B(8 along empty fender (2) top) be suspended in and cover on base object model rock stratum (13), fault block B(8 after preventing articulated structure accidental destruction) generation along empty fender (2) is destroyed;
At hard immediate roof geosutures fault block A(12) combination of steel rope (11) of certain density that entity coal side top board is constructed, fault block A(12 by hard for entity coal side) be combined into entirety, avoid geosutures biting point vertical load to fault block A(12) the destruction of bending, absciss layer;
Use fender to strengthen anchor pole (5) to give along empty fender (2), with enough horizontal anchored force, to make hard immediate roof fault block load on it be in balance along all mechanical relationships that empty fender (2) internal crack face is formed;
Use bottom empty fender, locate anchor cable (3), will be fixed between tight roof and seat earth along empty fender (2) along empty location anchor cable, fender top (6), balance by the anchored force and the broken horizontal thrust produced that rises of goaf (4) filling waste rock of locating anchor cable, prevent from moving in tunnel along empty fender (2) entirety, and produce floor lift in gallery phenomenon;
Adopt the method for lateral wall anchor pole (14), lateral wall anchor cable (15) coupling supporting, balance the destruction that its high bearing pressure is helped tunnel coal.
2. under hard immediate roof according to claim 1, large-mining-height working surface, along empty fender laneway support method, is characterized in that: protect top anchor pole (9) and use total length bond-anchorage, provide enough first anchor-holds to hard immediate roof.
3. under hard immediate roof according to claim 1, large-mining-height working surface, along empty fender laneway support method, is characterized in that: along location anchor cable, empty fender top (6) according to elevation angle construction, be deep into hard immediate roof fault block B(8) more than 1m in rock stratum; Bottom empty fender, locate anchor cable (3) adopt angle of depression construction, be deep into more than 1m in floor strata.
4. under hard immediate roof according to claim 1, large-mining-height working surface, along empty fender laneway support method, is characterized in that: the load that suspention anchor cable (10) is born and support density computational methods:
Pin joint is the half of fault block B gravity along the load Q that anchor cable in the roadway direction unit length of empty side bears, and is:
In formula: the load that in Q-roadway direction unit length, anchor cable bears, kN/m;
L-upper curtate roof periodic water component, m;
H-hard immediate roof thickness, m;
The body force of γ-hard immediate roof rock stratum, kN/m 3;
S-upper curtate face length, m;
Pin joint, along empty side, guarantees that the cable bolting density that hard immediate roof fault block B stablizes along roadway direction is:
In formula: the load that in-roadway direction unit length, anchor cable bears, kN/m;
the ultimate load of-single anchor cable, kN/m.
CN201410755207.XA 2014-12-11 2014-12-11 Large-mining-height working surface is along empty fender laneway support method under the hard direct top of one kind Expired - Fee Related CN104712348B (en)

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Publication number Priority date Publication date Assignee Title
CN105317459A (en) * 2015-11-19 2016-02-10 中国矿业大学(北京) Subarea filling method used for controlling large-area falling disaster of hard roof
CN106555602A (en) * 2015-09-24 2017-04-05 新汶矿业集团有限责任公司翟镇煤矿 A kind of colliery compound roof support and control method
CN107023311A (en) * 2017-06-08 2017-08-08 刘冲 Roadway repair method below coal column
CN107725052A (en) * 2017-10-31 2018-02-23 中国中煤能源集团有限公司 One kind, which is adopted, stays integration exploitation gob side entry top plate constant-resistance anchor body beam method for protecting support
WO2020088694A1 (en) * 2019-01-15 2020-05-07 山东科技大学 Quantified design method for coordination and deformation of gob-side entry retaining support system

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CN102661144A (en) * 2012-04-28 2012-09-12 山东科技大学 Method for determining anchoring depth of anchor cable along deep lane wall of empty crossheading entity coal side
CN103244122A (en) * 2013-05-13 2013-08-14 中国矿业大学 Trinity coupling support stability control method for gob-side entry-driving coal pillar
CN103573273A (en) * 2013-11-14 2014-02-12 山东科技大学 Method for suitability evaluation of high-strength material of roadside flexible-strength double-layer composite support in gob-side entry retaining
CN104074520A (en) * 2014-06-25 2014-10-01 中国矿业大学 Method for determining lower open-off cut positions of shallow-buried short-distance goaf-side coal pillars

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Publication number Priority date Publication date Assignee Title
CN101725368A (en) * 2009-11-28 2010-06-09 山东科技大学 Thick seam large mining height working face gob-side entry retaining method
CN102661144A (en) * 2012-04-28 2012-09-12 山东科技大学 Method for determining anchoring depth of anchor cable along deep lane wall of empty crossheading entity coal side
CN103244122A (en) * 2013-05-13 2013-08-14 中国矿业大学 Trinity coupling support stability control method for gob-side entry-driving coal pillar
CN103573273A (en) * 2013-11-14 2014-02-12 山东科技大学 Method for suitability evaluation of high-strength material of roadside flexible-strength double-layer composite support in gob-side entry retaining
CN104074520A (en) * 2014-06-25 2014-10-01 中国矿业大学 Method for determining lower open-off cut positions of shallow-buried short-distance goaf-side coal pillars

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106555602A (en) * 2015-09-24 2017-04-05 新汶矿业集团有限责任公司翟镇煤矿 A kind of colliery compound roof support and control method
CN105317459A (en) * 2015-11-19 2016-02-10 中国矿业大学(北京) Subarea filling method used for controlling large-area falling disaster of hard roof
CN107023311A (en) * 2017-06-08 2017-08-08 刘冲 Roadway repair method below coal column
CN107725052A (en) * 2017-10-31 2018-02-23 中国中煤能源集团有限公司 One kind, which is adopted, stays integration exploitation gob side entry top plate constant-resistance anchor body beam method for protecting support
CN107725052B (en) * 2017-10-31 2019-03-22 中国中煤能源集团有限公司 One kind, which is adopted, stays integration exploitation gob side entry top plate constant-resistance anchor body beam method for protecting support
WO2020088694A1 (en) * 2019-01-15 2020-05-07 山东科技大学 Quantified design method for coordination and deformation of gob-side entry retaining support system

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