CN103670470B - Full coal roadway safe and speedy drivage supporting method - Google Patents
Full coal roadway safe and speedy drivage supporting method Download PDFInfo
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- CN103670470B CN103670470B CN201310749203.6A CN201310749203A CN103670470B CN 103670470 B CN103670470 B CN 103670470B CN 201310749203 A CN201310749203 A CN 201310749203A CN 103670470 B CN103670470 B CN 103670470B
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Abstract
The invention provides a full coal roadway safe and speedy drivage supporting method which solves the problem that the existing supporting form and parameter selection are unreasonable. According to the method, a top plate, two side walls and a bottom plate of a roadway are supported and reinforced respectively, wherein the top plate is supported through a combination of anchor rods, iron wire gauze, W-shaped steel bands and anchor cables, the two side walls are supported through a combination of anchor rods and supporting nets, and the bottom plate is reinforced by pouring of concrete layers. According to the method, the reasonable selection and standard design of anchor supporting parameters are researched from the aspect of mutual matching between the anchor rods and matched materials of the anchor rods, between the anchor rods and the anchor rod supporting parameters and between the anchor rod supporting parameters and the roadway mine pressure behavior, and therefore the method lays the good foundation for fully improving the quality of anchor rod supporting and achieving the high yield and high efficiency of mines. According to the method, various supporting and combined supporting forms are adopted, especially the combined supporting of the anchor rods, the anchor cables, the steel bands and the nets is adopted, deformation of surrounding rock is effectively controlled, supporting strength is appropriate and materials are not wasted.
Description
Technical field
The present invention relates to the laneway support method in colliery, specifically a kind of whole enzymatic method Supporting Method for Drifting safely and fast.
Background technology
In recent years, China's coal roadway tunneling outfit and bolt support technology basically form, and design of bolt support for seam gateway technology, digging device and its corollary equipment etc. are rapidly developed.But at present also there are the following problems: bolt support form and Selecting parameter unreasonable, cause two extreme: first supporting intensity is too high, not only wastes support material, and affects driving speed; It two is that supporting intensity is inadequate, can not effective deformation controlling for rock surrounding gateways, occurs roof fall accident.
Summary of the invention
The object of the invention is to solve above-mentioned problems of the prior art, and a kind of whole enzymatic method Supporting Method for Drifting is safely and fast provided.
The present invention is achieved through the following technical solutions:
A kind of whole enzymatic method Supporting Method for Drifting safely and fast, is characterized in that: comprise the supporting to back and roadway's sides;
(1) supporting of back
Uniform fixing some row's anchor pole rows on back, the spacing of adjacent two row's anchor pole rows is 1000mm, often some diameters are drawn together in the package of row's anchor pole is 22mm, length is that the left-handed nothing of 20MnSi of 2400mm is indulged muscle twisted steel anchor rod (20MnSi is constructional materials, 20MnSi is the steel grade of intensity height and good combination property, can be used for structure steel fabrication, builing industry, the making of element part and all kinds of standard component), the spacing that the upper two adjacent left-handed nothings of 20MnSi of same row indulge muscle twisted steel anchor rod is 900mm, the each left-handed nothing of 20MnSi of often arranging in anchor pole row indulges that muscle twisted steel anchor rod is vertical with back to be fixed, the left-handed nothing of 20MnSi is indulged the anchoring of muscle twisted steel anchor rod and is adopted two resin explosive roll anchorings, a specification is K2335, another specification is Z2360, anchorage length is 1200mm, anchored force is not less than 6t, pretightning force is not less than 60KN, often in row's anchor pole row, the left-handed nothing of 20MnSi is indulged muscle twisted steel anchor rod lower end and is jointly fixed with a W steel band of model, and every left-handed nothing of root 20MnSi is indulged between the lower end of muscle twisted steel anchor rod and W steel band of model and is also fixed with the first supporting plate respectively, wherein, W shaped steel belt length be 4700mm, wide be 220mm, thick in 3mm, the first supporting plate long for 150mm, wide be 150mm, thick be 10mm, clamping between two adjacent W steel band of model and back have wire lath, wire lath is that the cold-drawn bar being 6mm by diameter is made, the length of wire lath be 2000mm, wide be 1000mm, grid is 80 × 80mm, adopts the colligation of 14# bifilar galvanized wire firm between two adjacent wire laths,
Back is also fixed with some row's anchor cables, often arrange anchor cable and comprise that two diameters are 17.8mm, length is the anchor cable of 8300mm, the anchor cable row that some anchor cables row is fixed in W steel band of model, have is fixed on the back between adjacent two W steel band of model, the anchor cable row that the anchor cable be fixed in W steel band of model is arranged and is fixed on back is arranged alternately by row, and the spacing of two adjacent row's anchor cables rows are 1500mm; Two anchor cables be fixed in the anchor cable row in W steel band of model are separately fixed at the two ends of W steel band of model and are 900mm with the spacing that the left-handed nothing of adjacent 20MnSi indulges muscle twisted steel anchor rod, two anchor cables be fixed in the anchor cable row on the back between adjacent two W steel band of model be arranged symmetrically with the center line of back and spacing for 2000mm; Be fixed on two anchor cables in W steel band of model tilt towards lane side direction contiguous separately respectively fixing and and angle between back be 60 °; The lower end of every root anchor cable is fixed with the second supporting plate, the second supporting plate long for 300mm, wide be 300mm, thick be 20mm; Anchorage cable anchoring adopts two resin explosive roll anchorings, and specification is K2335, another specification is Z2360, and anchorage length is 1200mm, and anchored force is not less than 6t, and pretightning force is not less than 60KN;
(2) supporting of the left side in tunnel
Help uniform fixing some row's anchor pole rows on a left side, tunnel, the spacing of adjacent two row's anchor pole rows is 1000mm; Often arrange anchor pole package and draw together the right-handed thread resin anchor that some diameters are 22mm, length is 2400mm, the spacing of the upper two adjacent right-handed thread resin anchors of same row is 1000mm, and the right-handed thread resin anchor often arranging top in anchor pole row tilts towards back direction, and fixing and between help with lane angle is 60 °, remaining each right-handed thread resin anchor helps vertical fixing with lane; The anchoring of right-handed thread resin anchor adopts two resin explosive roll anchorings, and specification is K2335, another specification is Z2360, and anchorage length is 1200mm, and anchored force is not less than 6t, and pretightning force is not less than 60KN; The outer end end winding support of every root right-handed thread resin anchor has a plastic-steel supporting plate, the length of plastic-steel supporting plate be 150mm, wide for 150mm, thick be 10mm; Clamping between adjacent two row's anchor poles and the left side in tunnel have a plastic wire, the length of plastic wire be 2000mm, wide be 1000mm, grid is 50 × 50mm, adopts the colligation of 14# bifilar galvanized wire firm between two adjacent plastic wires;
(3) supporting of the right side in tunnel
Help uniform fixing some row's anchor pole rows on the right side, tunnel, the spacing of adjacent two row's anchor pole rows is 1000mm; Often the package of row's anchor pole is drawn together the left-handed nothing that some diameters are 22mm, length is 2200mm and is indulged muscle twisted steel anchor rod, the spacing that the upper two adjacent left-handed nothings of same row indulge muscle twisted steel anchor rod is 1000mm, and a left-handed nothing of often arranging top in anchor pole row is indulged muscle twisted steel anchor rod and tilted towards back direction that fixing and between help with lane angle is 60 °, remaining each left-handed nothing is indulged muscle twisted steel anchor rod and helped vertical fixing with lane; Left-handed nothing is indulged the anchoring of muscle twisted steel anchor rod and is adopted two resin explosive roll anchorings, and specification is K2335, another specification is Z2360, and anchorage length is 1200mm, and anchored force is not less than 6t, and pretightning force is not less than 60KN; The outer end end winding support of every root right-handed thread resin anchor has second supporting plate, the length of the second supporting plate be 150mm, wide for 150mm, thick be 10mm; Clamping between two adjacent row's anchor poles and the right side in tunnel have a wire lath, wire lath is that the cold-drawn bar being 6mm by diameter is made, the length of wire lath be 2000mm, wide be 1000mm, grid is 100 × 100mm, adopts the colligation of 14# bifilar galvanized wire firm between two adjacent wire laths;
(4) supporting of roadway floor
To roadway floor pouring concrete layer, concrete layer thickness is 200mm, and concrete strength is C25.
The main contents of the initial design of its support of anchor pole comprise anchor pole geometric parameter, anchor pole mechanics parameter, boring and Anchorage Parameters, anchor pole arrangement parameter, protecting wire net parameter etc.There is the relation intercoupled between these parameters, change wherein any one parameter and all may make the supporting performance of anchor pole that huge change occurs.The present invention started with from mutual coupling the between anchor pole and supplementary material and Bolting Parameters thereof, between Bolting Parameters with strata behavior analysis of roadway Strata Behavior, the choose reasonable of research Bolting Parameters and Specification Design, thus be fully improve bolt support quality, for the high-yield and high-efficiency realizing mine lays a good foundation.The present invention has been modified into various multiple supporting, combined supporting form by single bolt support form and erection type steel shed support, particularly by anchor pole, anchor cable, steel band, net combined supporting, effectively control the distortion of country rock, supporting intensity is applicable to and does not waste material.Wherein, each parameter in the present invention is optimized by a large amount of theoretical analysis and calculation and numerical simulation calculation.
The inventive method meets the requirement of colliery tunnel support, decreases the cost of roadway support, improves operating efficiency, is conducive to the quick supporting of large section roadway and the High-efficient Production of mine.Every supporting 100m, supporting method of the present invention, compared with existing traditional supporting method, plays 7 anchor cables more, makes a call to 66 anchor poles less, and singles' anchor pole one improves work efficiency about 10%.Meanwhile, the inventive method two helps maximum displacement to decrease 15.6% than existing conventional method, and two help the plastic zone degree of depth to decrease 2.03%.In addition, what the left side of the inventive method tunnel near back production side adopted is glass fibre reinforced plastics rockbolts (right-handed thread resin anchor) and superpolyester fleece, has saved the dismounting time, has been beneficial to the raising of coal cutting effect.
Accompanying drawing explanation
Fig. 1 is the inventive method supporting profile.
Fig. 2 is the inventive method roof timbering plan view.
Fig. 3 is the inventive method left side supporting plan view.
Fig. 4 is the inventive method right side supporting plan view.
In figure: the left-handed nothing of 1-20MnSi indulges muscle twisted steel anchor rod, 2-W steel band of model, 3-first supporting plate, 4-anchor cable, 5-second supporting plate, 6-right-handed thread resin anchor, 7-plastic-steel supporting plate, the left-handed nothing of 8-indulge muscle twisted steel anchor rod, 9-the 3rd supporting plate, 10-concrete layer.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of whole enzymatic method Supporting Method for Drifting safely and fast, comprises the supporting to back and roadway's sides;
(1) supporting of back
As shown in Figure 2, uniform fixing some row's anchor pole rows on back, the spacing of adjacent two row's anchor pole rows is 1000mm; Often the package of row's anchor pole is drawn together the left-handed nothing of 20MnSi that some diameters are 22mm, length is 2400mm and is indulged muscle twisted steel anchor rod 1, the spacing that the upper two adjacent left-handed nothings of 20MnSi of same row indulge muscle twisted steel anchor rod 1 is 900mm, the each left-handed nothing of 20MnSi of often arranging in anchor pole row indulges that muscle twisted steel anchor rod 1 is vertical with back to be fixed, the left-handed nothing of 20MnSi is indulged muscle twisted steel anchor rod 1 anchoring and is adopted two resin explosive roll anchorings, specification is K2335, another specification is Z2360, anchorage length is 1200mm, anchored force is not less than 6t, and pretightning force is not less than 60KN; Often in row's anchor pole row, the left-handed nothing of 20MnSi is indulged muscle twisted steel anchor rod 1 lower end and is jointly fixed with a W steel band of model 2, and every left-handed nothing of root 20MnSi is indulged between the lower end of muscle twisted steel anchor rod 1 and W steel band of model 2 and is also fixed with the first supporting plate 3 respectively, wherein, W steel band of model 2 long for 4700mm, wide be 220mm, thick be 3mm, the first supporting plate 3 long for 150mm, wide be 150mm, thick be 10mm; Clamping between two adjacent W steel band of model 2 and back have wire lath, wire lath is that the cold-drawn bar being 6mm by diameter is made, the length of wire lath be 2000mm, wide be 1000mm, grid is 80 × 80mm, adopts the colligation of 14# bifilar galvanized wire firm between two adjacent wire laths;
Back is also fixed with some row's anchor cables, often arrange anchor cable and comprise the anchor cable 4 that two diameters are 17.8mm, length is 8300mm, the anchor cable row that some anchor cables row is fixed in W steel band of model 2, have is fixed on the back between adjacent two W steel band of model 2, the anchor cable row that the anchor cable be fixed in W steel band of model 2 is arranged and is fixed on back is arranged alternately by row, and the spacing of two adjacent row's anchor cables rows are 1500mm; Two anchor cables 4 be fixed in the anchor cable row in W steel band of model 2 are separately fixed at the two ends of W steel band of model 2 and are 900mm with the spacing that the left-handed nothing of adjacent 20MnSi indulges muscle twisted steel anchor rod 1, two anchor cables 4 be fixed in the anchor cable row on the back between adjacent two W steel band of model 2 be arranged symmetrically with the center line of back and spacing for 2000mm; Be fixed on two anchor cables 4 in W steel band of model 2 tilt towards lane side direction contiguous separately respectively fixing and and angle between back be 60 °; The lower end of every root anchor cable 4 be fixed with the second supporting plate 5, second supporting plate 5 long for 300mm, wide be 300mm, thick be 20mm; Anchor cable 4 anchoring adopts two resin explosive roll anchorings, and specification is K2335, another specification is Z2360, and anchorage length is 1200mm, and anchored force is not less than 6t, and pretightning force is not less than 60KN;
(2) supporting of the left side in tunnel
As shown in Figure 3, help uniform fixing some row's anchor pole rows on a left side, tunnel, the spacing of adjacent two row's anchor pole rows is 1000mm; Often arrange anchor pole package and draw together the right-handed thread resin anchor 6 that some diameters are 22mm, length is 2400mm, the spacing of the upper two adjacent right-handed thread resin anchors 6 of same row is 1000mm, and the right-handed thread resin anchor 6 often arranging top in anchor pole row tilts towards back direction, and fixing and between help with lane angle is 60 °, remaining each right-handed thread resin anchor 6 helps vertical fixing with lane; Right-handed thread resin anchor 6 anchoring adopts two resin explosive roll anchorings, and specification is K2335, another specification is Z2360, and anchorage length is 1200mm, and anchored force is not less than 6t, and pretightning force is not less than 60KN; The outer end end winding support of every root right-handed thread resin anchor 6 has a plastic-steel supporting plate 7, the length of plastic-steel supporting plate 7 be 150mm, wide for 150mm, thick be 10mm; Clamping between adjacent two row's anchor poles and the left side in tunnel have a superpolyester fleece, the fibroreticulate length of superpolyester be 2000mm, wide be 1000mm, grid is 50 × 50mm, adopts the colligation of 14# bifilar galvanized wire firm between two adjacent superpolyester fleeces;
(3) supporting of the right side in tunnel
As shown in Figure 4, help uniform fixing some row's anchor pole rows on the right side, tunnel, the spacing of adjacent two row's anchor pole rows is 1000mm; Often the package of row's anchor pole is drawn together the left-handed nothing that some diameters are 22mm, length is 2200mm and is indulged muscle twisted steel anchor rod 8, the spacing that the upper two adjacent left-handed nothings of same row indulge muscle twisted steel anchor rod 8 is 1000mm, and a left-handed nothing of often arranging top in anchor pole row is indulged muscle twisted steel anchor rod 8 and tilted towards back direction that fixing and between help with lane angle is 60 °, remaining each left-handed nothing is indulged muscle twisted steel anchor rod 8 and helped vertical fixing with lane; Left-handed nothing is indulged muscle twisted steel anchor rod 8 anchoring and is adopted two resin explosive roll anchorings, and specification is K2335, another specification is Z2360, and anchorage length is 1200mm, and anchored force is not less than 6t, and pretightning force is not less than 60KN; The outer end end winding support of every root right-handed thread resin anchor 8 have the length of second supporting plate 9, second supporting plate 9 be 150mm, wide for 150mm, thick be 10mm; Clamping between two adjacent row's anchor poles and the right side in tunnel have a wire lath, wire lath is that the cold-drawn bar being 6mm by diameter is made, the length of wire lath be 2000mm, wide be 1000mm, grid is 100 × 100mm, adopts the colligation of 14# bifilar galvanized wire firm between two adjacent wire laths;
(4) supporting of roadway floor
To roadway floor pouring concrete layer 10, concrete layer thickness is 200mm, and concrete strength is C25.
Claims (1)
1. a whole enzymatic method Supporting Method for Drifting safely and fast, is characterized in that: comprise the supporting to back and roadway's sides;
(1) supporting of back
Uniform fixing some row's anchor pole rows on back, the spacing of adjacent two row's anchor pole rows is 1000mm, often some diameters are drawn together in the package of row's anchor pole is 22mm, length is that the left-handed nothing of 20MnSi of 2400mm indulges muscle twisted steel anchor rod (1), the spacing that the upper two adjacent left-handed nothings of 20MnSi of same row indulge muscle twisted steel anchor rod (1) is 900mm, the each left-handed nothing of 20MnSi of often arranging in anchor pole row indulges that muscle twisted steel anchor rod (1) is vertical with back to be fixed, the left-handed nothing of 20MnSi is indulged muscle twisted steel anchor rod (1) anchoring and is adopted two resin explosive roll anchorings, a specification is K2335, another specification is Z2360, anchorage length is 1200mm, anchored force is not less than 6t, pretightning force is not less than 60KN, often in row's anchor pole row, the left-handed nothing of 20MnSi is indulged muscle twisted steel anchor rod (1) lower end and is jointly fixed with a W steel band of model (2), and every left-handed nothing of root 20MnSi is indulged between the lower end of muscle twisted steel anchor rod (1) and W steel band of model (2) and is also fixed with the first supporting plate (3) respectively, wherein, W steel band of model (2) long for 4700mm, wide be 220mm, thick be 3mm, the first supporting plate (3) long for 150mm, wide be 150mm, thick be 10mm, clamping between two adjacent W steel band of model (2) and back have wire lath, wire lath is that the cold-drawn bar being 6mm by diameter is made, the length of wire lath be 2000mm, wide be 1000mm, grid is 80 × 80mm, adopts the colligation of 14# bifilar galvanized wire firm between two adjacent wire laths,
Back is also fixed with some row's anchor cables, often arrange anchor cable and comprise the anchor cable (4) that two diameters are 17.8mm, length is 8300mm, some anchor cable rows are fixed on W steel band of model (2) anchor cable row that is upper, that have and are fixed on the back between adjacent two W steel band of model (2), the anchor cable row that the anchor cable be fixed in W steel band of model (2) is arranged and is fixed on back is arranged alternately by row, and the spacing of two adjacent row's anchor cables rows are 1500mm; Two anchor cables (4) be fixed in the anchor cable row in W steel band of model (2) are separately fixed at the two ends of W steel band of model (2) and are 900mm with the spacing that the left-handed nothing of adjacent 20MnSi indulges muscle twisted steel anchor rod (1), two anchor cables (4) be fixed in the anchor cable row on the back between adjacent two W steel band of model (2) be arranged symmetrically with the center line of back and spacing for 2000mm; Be fixed on two anchor cables (4) in W steel band of model (2) tilt towards lane side direction contiguous separately respectively fixing and and angle between back be 60 °; The lower end of every root anchor cable (4) is fixed with the second supporting plate (5), the second supporting plate (5) long for 300mm, wide be 300mm, thick be 20mm; Anchor cable (4) anchoring adopts two resin explosive roll anchorings, and specification is K2335, another specification is Z2360, and anchorage length is 1200mm, and anchored force is not less than 6t, and pretightning force is not less than 60KN;
(2) supporting of the left side in tunnel
Help uniform fixing some row's anchor pole rows on a left side, tunnel, the spacing of adjacent two row's anchor pole rows is 1000mm; Often arrange anchor pole package and draw together the right-handed thread resin anchor (6) that some diameters are 22mm, length is 2400mm, the spacing of the upper two adjacent right-handed thread resin anchors (6) of same row is 1000mm, and a right-handed thread resin anchor (6) of often arranging top in anchor pole row is tilted towards back direction, and fixing and between help with lane angle is 60 °, remaining each right-handed thread resin anchor (6) helps vertical fixing with lane; Right-handed thread resin anchor (6) anchoring adopts two resin explosive roll anchorings, and specification is K2335, another specification is Z2360, and anchorage length is 1200mm, and anchored force is not less than 6t, and pretightning force is not less than 60KN; The outer end end winding support of every root right-handed thread resin anchor (6) has a plastic-steel supporting plate (7), the length of plastic-steel supporting plate (7) be 150mm, wide for 150mm, thick be 10mm; Clamping between adjacent two row's anchor poles and the left side in tunnel have a superpolyester fleece, the fibroreticulate length of superpolyester be 2000mm, wide be 1000mm, grid is 50 × 50mm, adopts the colligation of 14# bifilar galvanized wire firm between two adjacent superpolyester fleeces;
(3) supporting of the right side in tunnel
Help uniform fixing some row's anchor pole rows on the right side, tunnel, the spacing of adjacent two row's anchor pole rows is 1000mm; Often the package of row's anchor pole is drawn together the left-handed nothing that some diameters are 22mm, length is 2200mm and is indulged muscle twisted steel anchor rod (8), the spacing that the upper two adjacent left-handed nothings of same row indulge muscle twisted steel anchor rod (8) is 1000mm, and a left-handed nothing of often arranging top in anchor pole row is indulged muscle twisted steel anchor rod (8) and tilted towards back direction that fixing and between help with lane angle is 60 °, remaining each left-handed nothing is indulged muscle twisted steel anchor rod (8) and helped vertical fixing with lane; Left-handed nothing is indulged muscle twisted steel anchor rod (8) anchoring and is adopted two resin explosive roll anchorings, and specification is K2335, another specification is Z2360, and anchorage length is 1200mm, and anchored force is not less than 6t, and pretightning force is not less than 60KN; The outer end end winding support of every root right-handed thread resin anchor (8) has the 3rd supporting plate (9), the length of the 3rd supporting plate (9) be 150mm, wide for 150mm, thick be 10mm; Clamping between two adjacent row's anchor poles and the right side in tunnel have a wire lath, wire lath is that the cold-drawn bar being 6mm by diameter is made, the length of wire lath be 2000mm, wide be 1000mm, grid is 100 × 100mm, adopts the colligation of 14# bifilar galvanized wire firm between two adjacent wire laths;
(4) supporting of roadway floor
To roadway floor pouring concrete layer (10), concrete layer thickness is 200mm, and concrete strength is C25.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105422130A (en) * | 2014-06-08 | 2016-03-23 | 衢州市优德工业设计有限公司 | Method for regulating supporting pressure to carry out roadway surrounding rock supporting |
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| CN104343461A (en) * | 2014-09-10 | 2015-02-11 | 西南交通大学 | Light supporting method applicable to gently-dipping-stratum massive rock tunnel |
| CN104453960B (en) * | 2014-10-01 | 2016-10-05 | 西安科技大学 | Containing sliding deformation laneway support method wrong outside soft dirt band thickness coal seam |
| CN104453957B (en) * | 2014-11-15 | 2016-08-24 | 大同煤矿集团有限责任公司 | Medium-thickness seam roof rock control method |
| 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 |
| CN105604591A (en) * | 2016-03-16 | 2016-05-25 | 重庆工程职业技术学院 | Supporting method and structure for coal seam group |
| CN109322680B (en) * | 2018-11-08 | 2024-10-11 | 杭州图强工程材料有限公司 | Supporting lining and preventing and controlling method |
| CN109736856B (en) * | 2018-12-18 | 2021-02-19 | 天地科技股份有限公司 | Stoping roadway supporting device and supporting method |
| 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 |
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| US6435778B1 (en) * | 2000-03-13 | 2002-08-20 | Triad Support Systems, Inc. | Cable truss system and related method of installation |
| CN1693670A (en) * | 2005-05-19 | 2005-11-09 | 中国矿业大学 | Three-anchor coupling supporting method for high stress tunnel break wall rock |
| RU102228U1 (en) * | 2009-07-28 | 2011-02-20 | Общество с ограниченной ответственностью "Монтажник Распадской" | Mining Anchors |
| CN201560775U (en) * | 2009-09-29 | 2010-08-25 | 山东泰丰矿业集团有限公司 | Temporary support device for coal mine tunneling |
| CN202064981U (en) * | 2011-05-07 | 2011-12-07 | 山西晋城无烟煤矿业集团有限责任公司 | Soft coal layer roadway supporting structure |
| CN102733836B (en) * | 2012-07-05 | 2015-01-28 | 大同煤矿集团有限责任公司 | Roadway support method for fully mechanized caving mining of weak extra-thick coal seam |
| CN102777196A (en) * | 2012-08-09 | 2012-11-14 | 大同煤矿集团有限责任公司 | Complementary supporting method of zoom backstopping roadway |
| CN103470289A (en) * | 2013-09-25 | 2013-12-25 | 大同煤矿集团有限责任公司 | Contiguous coal seam mining support method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422130A (en) * | 2014-06-08 | 2016-03-23 | 衢州市优德工业设计有限公司 | Method for regulating supporting pressure to carry out roadway surrounding rock supporting |
| CN105422130B (en) * | 2014-06-08 | 2017-06-13 | 衢州市优德工业设计有限公司 | It is a kind of to adjust the method that supporting pressure carries out supporting roadway surrounding rock |
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