CN109915197A - A kind of method that rock gangway km directional long borehole substitution middle part bottom pumping rock gangway is taken out at bottom - Google Patents

A kind of method that rock gangway km directional long borehole substitution middle part bottom pumping rock gangway is taken out at bottom Download PDF

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Publication number
CN109915197A
CN109915197A CN201910289910.9A CN201910289910A CN109915197A CN 109915197 A CN109915197 A CN 109915197A CN 201910289910 A CN201910289910 A CN 201910289910A CN 109915197 A CN109915197 A CN 109915197A
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China
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rock gangway
taken
crossheading
layer
directional long
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CN201910289910.9A
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Chinese (zh)
Inventor
李宏
邓奇根
赵发军
刘明举
王浩
尹静萍
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Henan University of Technology
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Henan University of Technology
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Abstract

The present invention relates to a kind of bottoms to take out the method that rock gangway is taken out at rock gangway km directional long borehole substitution middle part bottom, it is to utilize high methane, projecting mine, which is generally constructed, has crossheading bottom to take out the form of construction work that rock gangway shielding stope gate road tunnels, the common layer-through drilling of construction of rock gangway, which is taken out, at the crossheading bottom takes out the coal body in front of coal road in advance, before construction the stope gate road and spare face gate road, the construct in advance crossheading bottom take out rock gangway, drill site of constructing in rock gangway is taken out at the crossheading bottom, a layer km directional long borehole is worn in construction in the drill site, the gas of the working face of preparatory extraction top working seam.The invention has the advantages that save working face mining economic cost and time cost, and it is inherently eliminated outburst hazard and gas emission during working face mining, has ensured that mine safety efficiently produces.

Description

A kind of method that rock gangway km directional long borehole substitution middle part bottom pumping rock gangway is taken out at bottom
Technical field
The present invention relates to a kind of coal mine underground coal bed long drilled holes gas pumping methods, the high methane suitable for Gas-bearing Coal Seams With coal and gas outburst mine, the method that rock gangway is taken out at rock gangway km directional long borehole substitution middle part bottom is taken out at specially a kind of bottom.
Background technique
High methane, coal and gas outburst mine are generally rich in the gas amount of high concentration and large volume, are safe working field with "nine squares" Coal body in range takes the pre- extraction of ground drilling, protective coat extracted, the progressive extraction in region, high pumping rock gangway exploitation, bottom pumping The regional gas controls measures such as rock gangway exploitation disappear while pre- exploitation coal body gas bearing capacity and gas pressure is effectively reduced Except coal and gas prominent risk, the safety of personnel when carrying out mining work activities in coal seam is ensured.
Currently, coal and gas outburst mine must be taken corresponding region Firedamp precaution measures, above-mentioned institute by national regulation The pre- extraction of the drilling well mentioned, protective coat extracted, the progressive extraction in region etc. are implemented before being opened up by coal seam, the exploitation of high pumping rock gangway, Rock gangway is taken out to be implemented before roadway opening engineering construction before the developing of safeguard work face safety coal extraction in bottom.Height takes out the main mesh of rock gangway It is to be effectively eliminated set by work face goaf and roof fracture band gas, rock gangway is taken out at bottom when improving working face extraction progress Safety when tunneling in working seam for safeguard work face crossheading is right in advance to layer-through drilling in construction in pumping lane rock gangway The coal road opened up in advance carries out extraction, eliminates its outburst hazard.But part high methane or projecting mine because gas permeability of coal seam is poor, watt The reasons such as this content height, for the safety during the back production of safeguard work face, are still needed in work on the basis of implementing area above measure Make below the middle part coal body of face air entering and returning crossheading, rock gangway is taken out at construction middle part bottom, before guaranteeing working face extraction, in advance to working face Coal body carries out comprehensive pre- pumping.The construction of rock gangway is taken out at this middle part bottom, is constructed in two gate roads to pumping though solving to greatest extent Existing extraction blank area when drilling, construction layer-through drilling the extractions problem such as avoid drilling collapse hole, extraction attenuation coefficient big, but deposit High in construction cost, long in time limit, aggravation coal mine excavation takes out the problems such as linking is nervous.
Summary of the invention
Cause the construction of this coal bed drilling and pore-forming tired to alleviate above-mentioned part high methane, projecting mine because coal seam is soft Difficult, the problems such as gas permeability of coal seam is poor and project amount and throwing caused by rock gangway are taken out in the bottom in the middle part of stope lower part is constructed of having to The huge problem of cost is provided, the present invention provides a kind of bottoms to take out the side that rock gangway is taken out at rock gangway km directional long borehole substitution middle part bottom Method, this method be coal mine underground construction crossheading bottom take out rock gangway shielding stope gate road driving while, it is suitable at this Slot bottom pumping construction of rock gangway is worn a layer km directional long borehole and is taken out in advance to Ileal neobladder coal body in advance, and saving one back production of construction is reached The purpose of rock gangway is taken out at Middle face bottom, which can sufficiently improve the utilization efficiency that rock gangway is taken out at crossheading bottom, fixed with layer km is worn It is taken out to coal body of the long drilled holes to stope is pre- in advance, there is drilling construction progress is fast, hole quality is good, extraction is high-efficient etc. Advantage has weight to the high methane of the soft low air permeability coal seam of partial mining, the efficient extraction of projecting mine gas and prevention and treatment gas Big realistic meaning.
To achieve the goals above, realization that the present invention adopts the following technical solutions: a kind of bottom pumping rock gangway km orientation The method that rock gangway is taken out at long drilled holes substitution middle part bottom is generally to construct to have crossheading bottom to take out rock gangway shielding using high methane, projecting mine It is general to take out construction of rock gangway at the crossheading bottom for the form of construction work of stope gate road and spare face gate road driving Logical layer-through drilling takes out the coal body in front of crossheading coal road in advance, suitable in the construction stope gate road and spare face Before slot tunnel, rock gangway is taken out at the crossheading bottom of constructing in advance, be exactly stope plan driving a gate road and Between one gate road of standby face plan driving adjacent thereto in the rock stratum of middle and lower part, a crossheading bottom of constructing in advance Rock gangway is taken out, is taken out in rock gangway at the crossheading bottom and digs drill site, a layer km directional long borehole is worn in construction in the drill site, is taken out in advance Adopt the gas of the working face of top working seam.
Further, the level course position that rock gangway is taken out at the crossheading bottom is arranged in stope gate road and adjacent thereto Standby face gate road between, crossheading bottom take out rock gangway perpendicular layers position be arranged in below the roadway floor of working seam and away from Roadway floor is not less than the rock stratum position of 5m, and considers that the complexity of rock gangway top plate performance, layer-through drilling of constructing is taken out at crossheading bottom Depending on.
Further, while coal road gas above common layer-through drilling extraction of constructing in rock gangway is taken out at the crossheading bottom, Taking out digging in rock gangway at the crossheading bottom has multiple drill sites, wears layer km with km drilling machine construction in the drill site and orients jumping chisel Hole, the spacing of adjacent drill site are 200 ~ 400m.
Further, the crossheading bottom take out rock gangway in construct wear a layer km directional long borehole, with certain elevation angle by The bottom plate of working seam is constructed to top plate direction, and the main aperture length for wearing layer km directional long borehole is 400 ~ 600m, in each institute A layer km directional long borehole is worn in construction 5 ~ 7 in the drill site stated, and described each wearing a layer km directional long borehole is provided with multiple points Zhi Kong realizes that one is worn layer km directional long borehole multiple and different level course positions, the construction of different vertical layer position in working seam, Pectination is presented in layer km directional long borehole solid of wearing.
Further, layer km directional long borehole of wearing is in the crossheading bottom pumping rock gangway of stope gate road two sides The drill site of interior while opposite construction, stope gate road two sides is synchronous or arranged in succession, layer km of wearing are determined Be 94 ~ 250mm to the diameter of long drilled holes, main aperture along the trend of working seam, branched hole by vertical direction along the main aperture The roof and floor direction of two sides is arranged, and 5 ~ 10m of branched hole horizontal direction dislocation of main aperture two sides.
The working principle of the invention is: mechanics performance determining, numerical value by routine techniques to working seam bottom plate lithology The combined factors such as sunykatuib analysis, the layer-through drilling construction lane Ji Dichou Roof complexity are investigated, and determine that best crossheading bottom is taken out The perpendicular layers position of rock gangway.It wears a layer km directional long borehole construction and combines the existing orientation Trajectory Tracking System of km drilling machine, realize Accurate positionin and coordinate management to the main aperture and branched hole for wearing layer km directional long borehole, and rock gangway is taken out with another crossheading bottom A layer coordinate position for km directional long borehole of wearing combine, realize that two crossheading bottoms are taken out in rock gangways and wear a layer km orientation jumping chisel Hole intersects intercommunication, and combines with common layer-through drilling, realizes that working face is comprehensive, multi-source head solid extraction, so as to substituting work Make Middle face bottom and take out rock gangway, realizes the working face extraction purpose up to standard with safety coal extraction.
Compared with prior art, the present invention has following technical effect that
(1) km can be used while construction of rock gangway and ordi-nary drilling machine layer-through drilling extraction coal road crossheading coal body are taken out in crossheading bottom A wear layer km directional long borehole of the drilling machine construction from bottom plate to top plate direction realizes further advanced pre- pumping, when extending extraction Between.
(2) a layer km directional long borehole is worn by crossheading bottom pumping construction of rock gangway and takes out working face coal body in advance, wear a layer km orientation length Drilling drains residue-discharge convenience from working seam bottom plate to top board construction, is constructed from rock stratum to coal seam direction, and hole quality is good, bores Hole construction efficiency is high.
(3) crossheading bottom takes out construction of rock gangway and wears a layer km directional long borehole, in the lane crossheading Di Chou and wears a layer km orientation length Under drilling construction digging stress influence, working face coal mass relief is anti-reflection, and gas permeability of coal seam significantly increases, and extraction is high-efficient.
(4) the crossheading bottom constructed takes out rock gangway and wears a layer km directional long borehole, and it is same to take out rock gangway at the crossheading bottom of working face two sides Shi Xiangxiang construction, it is cross-shaped in coal seam and reach mutual antireflective effect, realize the extraction all standing of working face coal body, coal body is saturating Gas further increases.
(5) it is effectively mended in the common layer-through drilling that construction of rock gangway is taken out at the crossheading bottom to a layer km directional long borehole is worn It fills, in the case where crossheading bottom takes out rock gangway and wears layer km directional long borehole mining influence, common layer-through drilling extracting result can be further Increase.
In short, the construction of the lane crossheading Di Chou is worn, layer km directional long borehole is pre- in advance to working face to be taken out, and reaches saving construction one The purpose of rock gangway is taken out at bottom in the middle part of working face, and working face mining economic cost, time cost are saved huge, and rank is adopted in the pumping pick of mine Connecing nervous situation can alleviate significantly, while realize the three-dimensional extraction in all directions of working face coal body, fundamentally eliminate working face mining The outburst hazard and gas emission of period, has ensured that mine safety efficiently produces.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is that rock gangway km directional long borehole overlooking structure diagram is taken out at bottom of the present invention.
Fig. 2 is the A-A of Fig. 1 to cross section structure schematic diagram.
In figure: 1- crossheading bottom pumping rock gangway, 2- stope gate road, 3- spare face gate road, 4- wear layer Km directional long borehole, 5- drill site, 6- working seam, the rock stratum 7-, the common layer-through drilling of 8-.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention and the present invention is explicitly described in specific embodiment, herein The description at place is used merely to explain the present invention, but not as a limitation of the invention.Based on the embodiments of the present invention, ability Field technique personnel every other embodiment obtained without making creative work, any modification made, etc. With replacement, improvement etc., should all be included in the protection scope of the present invention.
As shown in Figs. 1-2, the method that rock gangway is taken out at rock gangway km directional long borehole substitution middle part bottom is taken out at a kind of bottom, is to utilize height Gas, projecting mine, which are generally constructed, has crossheading bottom to take out the shielding stope gate road 2 of rock gangway 1 and spare face crossheading lane The form of construction work that road 3 tunnels takes out the common layer-through drilling 8 of constructing of rock gangway 1 at the crossheading bottom and takes out coal body in front of coal road in advance, applying Before stope gate road 2 described in work and spare face gate road 3, rock gangway is taken out at the crossheading bottom of constructing in advance 1, be exactly stope plan driving a gate road and standby face plan adjacent thereto driving one it is suitable Between slot tunnel in the rock stratum of middle and lower part, rock gangway 1 is taken out at crossheading bottom of constructing in advance, takes out in rock gangway 1 and digs at the crossheading bottom Drill site 5, a layer km directional long borehole 4, watt of the working face of preparatory extraction top working seam 6 are worn in construction in the drill site 5 This.
The level course position that rock gangway 1 is taken out at the crossheading bottom is arranged in stope gate road 2 and adjacent thereto spare Between return airway tunnel 3, crossheading bottom is taken out 1 perpendicular layers position of rock gangway and is arranged in below the roadway floor of working seam 6 and away from lane Road bottom plate is not less than 7 position of rock stratum of 5m.
While coal road gas above common 8 extraction of layer-through drilling of constructing in rock gangway 1 is taken out at the crossheading bottom, described suitable Slot bottom, which takes out digging in rock gangway 1, multiple drill sites 5, wears a layer km directional long borehole 4 with km drilling machine construction in the drill site 5, The spacing of adjacent drill site 5 is 300m.
That constructs in the pumping rock gangway 1 of the crossheading bottom wears a layer km directional long borehole 4, with certain elevation angle by working seam 6 bottom plate is constructed to top plate direction, and the main aperture length for wearing layer km directional long borehole 4 is 500m, in each brill A layer km directional long borehole 4 is worn in construction 6 in, and described each wearing a layer km directional long borehole 4 is provided with multiple branched holes, real Existing one is worn layer km directional long borehole 4 multiple and different level course positions, the construction of different vertical layer position in working seam 6, described Wear that layer km directional long borehole 4 is three-dimensional to be presented pectination.
Further, layer km directional long borehole 4 of wearing is in the crossheading bottom pumping rock of 2 two sides of stope gate road It constructing in lane 1 while in opposite directions, the synchronization of drill site 5 of 2 two sides of stope gate road or arranged in succession are described to wear layer thousand The diameter of rice directional long borehole 4 is 200mm, main aperture along the trend of working seam 6, branched hole by vertical direction along the master The roof and floor direction of hole two sides is arranged, and the branched hole horizontal direction dislocation 8m of main aperture two sides.
The working principle of the invention is: by routine techniques to mechanics performance determining, the numerical value of 6 bottom plate lithology of working seam The combined factors such as sunykatuib analysis, the layer-through drilling construction lane Ji Dichou Roof complexity are investigated, and determine that best crossheading bottom is taken out The perpendicular layers position of rock gangway 1.It wears layer construction of km directional long borehole 4 and combines the existing orientation Trajectory Tracking System of km drilling machine, it is real Now to the accurate positionin and coordinate management of the main aperture and branched hole for wearing layer km directional long borehole 4, and taken out with another crossheading bottom A layer coordinate position for km directional long borehole 4 of wearing for rock gangway 1 combines, and realizes that two crossheading bottoms are taken out in rock gangway 1 and wears a layer km Directional long borehole 4 intersects intercommunication, and combines with common layer-through drilling 8, realizes that working face is comprehensive, multi-source head solid extraction, Rock gangway is taken out so as to bottom in the middle part of substitution working face, realizes the working face extraction purpose up to standard with safety coal extraction.
The above is only a preferred embodiment of the present invention, above description is exemplary, and non-exclusive, and It is also not necessarily limited to disclosed embodiment.It should be pointed out that for those skilled in the art, not departing from this hair Under the premise of bright principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as protection model of the invention It encloses.Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the present invention Protection scope within.

Claims (5)

  1. It is to utilize high methane, projecting mine 1. the method that rock gangway is taken out at rock gangway km directional long borehole substitution middle part bottom is taken out at a kind of bottom Generally construction has crossheading bottom to take out rock gangway (1) shielding stope gate road (2) and spare face gate road (3) driving Form of construction work, take out rock gangway (1) construct common layer-through drilling (8) at the crossheading bottom and take out coal body in front of coal road, feature in advance Be: before construction the stope gate road (2) and spare face gate road (3), construct institute in advance It states crossheading bottom and takes out rock gangway (1), taken out in rock gangway (1) at the crossheading bottom and dig drill site (5), layer is worn in construction in the drill site (5) Km directional long borehole (4), the gas of the working face of preparatory extraction top working seam (6).
  2. 2. the method that rock gangway is taken out at rock gangway km directional long borehole substitution middle part bottom, feature are taken out in bottom according to claim 1 Be: the level course position that rock gangway (1) is taken out at the crossheading bottom is arranged in stope gate road (2) and adjacent thereto spare Between Ileal neobladder gate road (3), crossheading bottom is taken out rock gangway (1) perpendicular layers position and is arranged in below the roadway floor of working seam (6) And it is not less than rock stratum (7) position of 5m away from roadway floor.
  3. 3. the method that rock gangway is taken out at rock gangway km directional long borehole substitution middle part bottom, feature are taken out in bottom according to claim 1 It is: while coal road gas above common layer-through drilling (8) extraction of construction in rock gangway (1) is taken out at the crossheading bottom, described The multiple drill sites (5) of digging in rock gangway (1) are taken out at crossheading bottom, wear a layer km orientation length with km drilling machine construction in the drill site (5) It drills (4), the spacing of adjacent drill site (5) is 200 ~ 400m.
  4. 4. the method that rock gangway is taken out at rock gangway km directional long borehole substitution middle part bottom, feature are taken out in bottom according to claim 1 Be: that constructs in crossheading bottom pumping rock gangway (1) wears a layer km directional long borehole (4), with certain elevation angle by mine coal The bottom plate of layer (6) is constructed to top plate direction, the main aperture 400 ~ 600m of length for wearing layer km directional long borehole (4), each A layer km directional long borehole is worn in construction 5 ~ 7 in the drill site (5), and each layer km directional long borehole (4) of wearing is arranged There are multiple branched holes, realizes that is worn layer km directional long borehole (4) multiple and different level course positions, no in working seam (6) It constructs with perpendicular layers position, described wears the three-dimensional presentation pectination of layer km directional long borehole (4).
  5. 5. the method that rock gangway is taken out at rock gangway km directional long borehole substitution middle part bottom is taken out at bottom described according to claim 1 ~ 4, special Sign is: layer km directional long borehole (4) of wearing is in crossheading bottom pumping rock gangway (1) of stope gate road (2) two sides Interior while opposite construction, drill site (5) synchronization of stope gate road (2) two sides or arranged in succession, it is described to wear layer The diameter of km directional long borehole (4) is 94 ~ 250mm, and main aperture is along the trends of working seam (6), branched hole by vertical direction On along the main aperture two sides roof and floor direction arrange, and main aperture two sides branched hole horizontal direction misplace 5 ~ 10m.
CN201910289910.9A 2019-04-11 2019-04-11 A kind of method that rock gangway km directional long borehole substitution middle part bottom pumping rock gangway is taken out at bottom Pending CN109915197A (en)

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CN110306934A (en) * 2019-07-02 2019-10-08 中煤科工集团西安研究院有限公司 The construction method and supporting drilling tool of double branch's top plate major diameter high position directional long boreholes
CN110685734A (en) * 2019-10-24 2020-01-14 中煤科工集团西安研究院有限公司 Panel gas treatment method based on partition step-by-step increasing tree-shaped directional long drilling
CN111101998A (en) * 2020-01-19 2020-05-05 山西晋城无烟煤矿业集团有限责任公司 Method for intercepting gas extracted from directional long drill hole
CN111173555A (en) * 2020-01-07 2020-05-19 山西晋煤集团技术研究院有限责任公司 Drilling and punching integrated construction process for comb-shaped long drilling hole of bottom suction roadway
CN111594258A (en) * 2020-04-29 2020-08-28 中煤科工集团西安研究院有限公司 Technical method for quickly extracting gas to reach standard by using broken soft low-permeability outburst coal seam instead of roadway through holes

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CN110306934A (en) * 2019-07-02 2019-10-08 中煤科工集团西安研究院有限公司 The construction method and supporting drilling tool of double branch's top plate major diameter high position directional long boreholes
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CN110685734B (en) * 2019-10-24 2021-01-29 中煤科工集团西安研究院有限公司 Panel gas treatment method based on partition step-by-step increasing tree-shaped directional long drilling
CN110685734A (en) * 2019-10-24 2020-01-14 中煤科工集团西安研究院有限公司 Panel gas treatment method based on partition step-by-step increasing tree-shaped directional long drilling
CN111173555A (en) * 2020-01-07 2020-05-19 山西晋煤集团技术研究院有限责任公司 Drilling and punching integrated construction process for comb-shaped long drilling hole of bottom suction roadway
CN111101998A (en) * 2020-01-19 2020-05-05 山西晋城无烟煤矿业集团有限责任公司 Method for intercepting gas extracted from directional long drill hole
CN111101998B (en) * 2020-01-19 2021-03-19 山西晋城无烟煤矿业集团有限责任公司 Method for intercepting gas extracted from directional long drill hole
CN111594258A (en) * 2020-04-29 2020-08-28 中煤科工集团西安研究院有限公司 Technical method for quickly extracting gas to reach standard by using broken soft low-permeability outburst coal seam instead of roadway through holes

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Application publication date: 20190621