CN101915099A - Bidirectional U-shaped coal-mining method of thick coal bed by gateway layout along stability layer - Google Patents

Bidirectional U-shaped coal-mining method of thick coal bed by gateway layout along stability layer Download PDF

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Publication number
CN101915099A
CN101915099A CN 201010244055 CN201010244055A CN101915099A CN 101915099 A CN101915099 A CN 101915099A CN 201010244055 CN201010244055 CN 201010244055 CN 201010244055 A CN201010244055 A CN 201010244055A CN 101915099 A CN101915099 A CN 101915099A
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China
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along
production
work plane
mining
stabilized zone
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CN 201010244055
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Chinese (zh)
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CN101915099B (en
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康天合
郭灵飞
柴肇云
代金华
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太原理工大学
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Abstract

The invention relates to a bidirectional U-shaped coal-mining method of a thick coal bed by gateway layout along a stability layer. The method comprises the following steps of: firstly, tunneling all gateways of a mine along the stability layer so that top plates of the tunnels form the stability layer of the coal bed; and arranging actual mining gateways along the stability layer so that working surfaces form a bidirectional U shape along the lengths and the advancing directions, wherein a three-section actual mining process, including sapping, leveling and climbing, is adopted on the actual mining of the working surfaces along the lengths and the advancing directions. The method radically solves the difficulties in tunneling and supporting of gateway layout along soleplate in a thick coal bed in the prior art, lessens the coal pillar loss among adjacent working surfaces and is beneficial to the gas drainage of the working surfaces particularly at an upper corner. The invention is suitable for the fully-mechanized mining with large mining height and the sub-level caving mining of the loose and broken thick coal bed.

Description

High seam is along the two-way concave character type coal-mining method in stabilized zone cloth lane
Technical field
The present invention relates to a kind of high seam coal-mining method, specifically is the two-way concave character type coal-mining method of a kind of soft broken high seam along stabilized zone cloth lane.
Background technology
Existing underground longwall mining method for extraction is three kinds of separate zone production, top coal caving and big mining and high comprehensive minings.Separate zone production is used comparatively extensive before the eighties in 20th century, but because its tunnelling amount is big, and work efficiency is low, cost of production height and lower leaf exploitation are subjected to tunnelling difficulty, goaf ponding, gas and coal spontaneous ignition etc. to have a strong impact on less application.Big mining and high comprehensive mining and top coal caving are the main method of thick coal-layer mining.In existing big mining and high comprehensive mining and top coal caving, the tunnel of crossheading and open-off cut etc. up and down of stope arranges that along seat earth the open defect that this layout exists is: when the underseam soft broken, tunnelling and supporting be difficulty very; Along with the increase of coal seam thickness, require to stay the section coal pillar width of establishing to increase.In addition, when crossheading up and down when seat earth is arranged, be unfavorable for the particularly discharging of its upper corner gas of work plane.
At the problems referred to above, prior art adopts pre-grouting, advance pipe canopy and advance anchor bolt control boring head top board to emit leakage, but has a strong impact on tunnelling speed, and to the control poor effect of roadway surrounding rock stability.
Summary of the invention
Based on above-mentioned the deficiencies in the prior art, the present invention discloses two-way " recessed " font coal-mining method of a kind of high seam along stabilized zone cloth lane, arrange the difficulty of tunnel in tunnelling and supporting to overcome thick seam large mining high comprehensive mining and top coal caving along seat earth, reduce the section coal pillar loss, help particularly its upper corner drawing-off gas of work plane.
To achieve these goals, the technical solution used in the present invention is two-way " recessed " font coal-mining method of a kind of high seam along stabilized zone cloth lane, and this method comprises roadway arrangement and process for stoping.It is characterized in that:
A, the main tunnel of mine comprise that development work, preparatory working and stope drift active workings are all along coal seam stabilized zone layout, to realize the stability of tunnelling and supporting.
B, stope form two-way " recessed " font and arrange.In the face length direction, crossheading and work plane two ends are arranged in stabilized zone up and down, and the work plane middle part is arranged along seat earth, connects three sections up and down in face length direction with becoming the ramp, and " recessed " font that forms on the face length direction is arranged; In advance of the face direction, open-off cut is arranged in stabilized zone with the equipment return channel that stops adopting the line place, the back production section is arranged along seat earth in the middle of the work plane, and with three sections up and down of θ=15 ° change slope angle connection advance of the face direction, " recessed " font that forms on the advance of the face direction is arranged.
C, all form the syllogic process for stoping in face length direction and direction of propulsion, promptly in the face length direction, the work plane two ends is along the stabilized zone back production, and the work plane middle part adopts to become three sections up and down in sloping back production section connection face length direction along the seat earth back production.In advance of the face direction, in first exploiting field section, work plane (except the two ends) begins the incision back production from stabilized zone, until seat earth, and work plane incision angle θ=15 °; At middle back production section, work plane (except the two ends) is along the seat earth back production; In last exploiting field section, work plane (except the two ends) is from the seat earth back production of swashing, until stabilized zone, and swash angle θ=15 ° of work plane.
D, when intake intersects with the return aircourse, return airway point out frankly top board the transportation lane on graded crossing.
Stabilized zone of the present invention is meant that compressive strength is big in the high seam, the layer position that crack agensis or dirt band thickness are bigger; Described change ramp is played slope section at work plane and is designed to every joint chute and raises 3 °, and shared five joint chutes are raised to 15 °, keep then laying N joint chute with 15 ° of base plates, re-lay 5 joints subsequently and fall crossheadings after rise, and every joint falls 3 ° after rise, falls after rise to parallel with seat earth.If seat earth to the height of crossheading base plate is H, every joint chute is long to be A, and then N is:
Compared with prior art, advantage applies of the present invention exists:
1, compare along the seat earth layout with existing mine laneway, high seam of the present invention helps the driving and the supporting of mine laneway along the realization of two-way " recessed " font coal-mining method in stabilized zone cloth lane.Mine laneway is arranged in the stabilized zone in coal seam, and making back is complete coal seam or spoil, back can not occur and emit leakage in the process of driving, can accelerate driving speed, and stable because of layer of living in position, tunnel, requires lower to roadway support.
2, put the coal-mining method that carries out back production in the tunnel along base fabric and compare with existing, high seam of the present invention is along two-way " recessed " font coal-mining method in stabilized zone cloth lane, the termination mining height is low up and down with work plane because back is stable, help realizing fender or non chain pillar entryprotection, farthest reduce the loss of section coal pillar, improved the rate of extraction of mine.
3, put the coal-mining method that carries out back production in the tunnel along base fabric and compare with existing, high seam of the present invention is along two-way " recessed " font coal-mining method in stabilized zone cloth lane, on face length direction and direction of propulsion, the syllogic that all forms incision, flattens and swash " recessed " font process for stoping, face up and down trough and equipment return channel are higher than the middle back production section of work plane layer position, help the particularly interior drawing-off gas of its upper corner of work plane.
Description of drawings
Fig. 1 is a top-coal caving face exploitation method system schematic of the present invention;
Fig. 2 is the I-I sectional drawing of Fig. 1 of the present invention;
Fig. 3 is the II-II sectional drawing of Fig. 1 of the present invention.
Among the figure: 1: the return airway of exploiting field; 2: air intake lane, exploiting field; 3: haulage gate; 4: air return way; 5: open-off cut; 6: just adopt stop line; 7: middle back production stop line; 8: the equipment return channel; 9: stabilized zone; 10: seat earth; 11: become ramp I; 12: become ramp II; A: first exploiting field section; B: middle back production section; C: last exploiting field section; D1: become sloping back production section I; D2: become sloping back production section II; E: along end back production section
The specific embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing:
As described in Fig. 1,2 and 3, high seam of the present invention is along two-way " recessed " font top-coal caving face exploitation method system schematic in stabilized zone cloth lane.High seam is as follows along the roadway arrangement and the process for stoping of two-way " recessed " font top-coal caving face mining system in stabilized zone cloth lane:
1, along high seam stabilized zone driving air intake lane, exploiting field 2, exploiting field return airway 1, haulage gate 3, air return way 4, open-off cut 5, the top board that makes these tunnels is a stabilized zone, when air intake lane 2, exploiting field intersects with air return way 4, graded crossing on air return way 4 broken top boards and the air intake lane 2, exploiting field forms the working surface production system.
2, stope forms two-way " recessed " font layout.In the face length direction, haulage gate 3, air return way 4 and work plane two ends are positioned at stabilized zone 9, arrange along seat earth 10 in the middle of the work plane, is connected three sections up and down in face length direction with becoming ramp I 11 and becoming ramp II 12, " recessed " font on the formation face length direction (among Fig. 3 shown in the dotted line) layout; In advance of the face direction, open-off cut 5 is arranged in stabilized zone 9 with the equipment return channel 8 that stops adopting the line place, the back production section B is arranged along seat earth 10 in the middle of the work plane, with three sections up and down of θ=15 ° change slope angle connection advance of the face direction, " recessed " font (shown in Fig. 2 dotted line) that forms on the advance of the face direction is arranged.
3, all form the syllogic process for stoping in face length direction and direction of propulsion.In the face length direction, become sloping back production section I D1, or becoming sloping back production section II D2, along 9 back production of coal seam stabilized zone, incision is along change ramp I 11, or change ramp II 12 back production, until seat earth 10 since a side head for work plane; Along end back production section E, work plane is along seat earth 10 back production; Becoming sloping back production section II D2, or becoming sloping back production section I D1, work plane swashes along change ramp II 12, or becomes ramp I 11 back production, until coal seam stabilized zone 9; The syllogic process for stoping that on the face length direction, form incision, flatten, swashes.In advance of the face direction, at first exploiting field section A, work plane (except the two ends) begins incision back production (incision angle be θ=15 °) from stabilized zone, adopts stop line 6 until just, and this moment, work plane arranged 10 along seat earth; In middle back production section B, work plane (except the two ends) is along the seat earth back production, until middle back production stop line 7; At last exploiting field section C, work plane (except the two ends) back production (angle of swashing be θ=15 °) of swashing is until equipment return channel 8; The syllogic process for stoping that on advance of the face direction, also form incision, flattens, swashes.
4, become ramp I 11 and become ramp II 12 and play the slope section at work plane to be designed to every joint chute and to raise 3 °, be raised to 15 ° by five joint chutes, keep then laying N joint chute, re-lay 5 joints subsequently and fall crossheading after rise with 15 ° of base plates, every joint falls 3 ° after rise, falls after rise to parallel with seat earth 10.
It establishes seat earth to the height of crossheading base plate is H, and every joint chute is long to be A, and then N is:
On the basis of the foregoing description, high seam provided by the invention also is applicable to big mining and high comprehensive mining along two-way " recessed " font coal-mining method in stabilized zone cloth lane.

Claims (2)

1. a high seam comprises roadway arrangement and process for stoping along the two-way concave character type coal-mining method in stabilized zone cloth lane, it is characterized in that:
At first, arrange development work, preparatory working and stope drift active workings along the stabilized zone (9) of mine high seam;
Secondly, the face length direction, haulage gate (3), air return way (4) and work plane two ends are positioned at stabilized zone (9), the work plane middle part is arranged along seat earth (10), be connected three sections up and down in face length direction with change ramp II (12) with becoming ramp I (11), constitute " recessed " font on the face length direction and arrange;
Advance of the face direction, open-off cut (5) is positioned at stabilized zone (9) with the equipment return channel (8) that stops adopting the line place, back production section (B) is arranged along seat earth (10) in the middle of the work plane, with three sections up and down of θ=15 ° change slope angle connection advance of the face direction, formation " recessed " font is arranged on the advance of the face direction;
At last, face length direction, work plane two ends along seat earth (10) back production, are connected three sections up and down in face length direction with becoming sloping back production section I (D1) along stabilized zone (9) back production in the middle of the work plane with the sloping back production section II of change (D2);
Advance of the face direction, in first exploiting field section (A), the work plane except that two ends begins the incision back production from stabilized zone (9), until seat earth (10), work plane incision angle θ=15 °; At middle back production section (B), the work plane except that two ends is along ground coal layer base plate (10) back production; In last exploiting field section (C), work plane is from seat earth (10) back production of swashing, until stabilized zone (9), and the angle of swashing θ=15 °;
All constitute the syllogic process for stoping that " recessed " font is arranged in face length direction and direction of propulsion.
2. method according to claim 1, it is characterized in that becoming ramp I (11) and become ramp II (12) and play the slope section at work plane to be designed to every joint chute and to raise 3 °, shared five joint chutes are raised to 15 °, keep then laying N joint chute with (10) 15 ° of seat earths, re-lay 5 joints subsequently and fall chute after rise, every joint falls 3 ° after rise, falls after rise to parallel with seat earth (10);
It establishes seat earth to the height of crossheading base plate is H, and every joint chute is long to be A, and then N is:
CN2010102440559A 2010-07-31 2010-07-31 Bidirectional U-shaped coal-mining method of thick coal bed by gateway layout along stability layer CN101915099B (en)

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN102383808A (en) * 2011-10-24 2012-03-21 山西晋城无烟煤矿业集团有限责任公司 Optimized laneway arrangement structure for high gas mining work surface
CN102505942A (en) * 2011-11-11 2012-06-20 山西晋城无烟煤矿业集团有限责任公司 Safe and fast driving method for large-section open-off cut time-by-time tunneling
CN102966354A (en) * 2012-11-09 2013-03-13 中国矿业大学(北京) Non-pillar mining method for hard roof coal wall of thick coal seam
CN105134212A (en) * 2015-08-10 2015-12-09 河南理工大学 Method for ensuring fully-mechanized top coal caving recovery rate of three-soft thick coal seam roadway tunneling along top
CN105156116A (en) * 2015-08-28 2015-12-16 贵州盘江精煤股份有限公司 Coal mine stoping roadway designing and constructing method
CN108086978A (en) * 2017-12-18 2018-05-29 太原理工大学 A kind of coal-mining method suitable for deep-well super high seam

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CN1657745A (en) * 2005-03-03 2005-08-24 开滦(集团)有限责任公司 Coal-minin method of high-dipping thick seam
CN1888390A (en) * 2006-07-12 2007-01-03 山西潞安矿业(集团)有限责任公司 High gas yoke thick coal seam quasi-large-scale mining and high comprehensive mining low-level caving technique

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CN1301910A (en) * 1999-12-24 2001-07-04 王世忠 Funnel type coal mining method
RU2235206C1 (en) * 2002-12-17 2004-08-27 ОАО "Научно-исследовательский институт по проблемам КМА им. Л.Д. Шевякова" Method for developing deep-seated mineral deposits
CN1657745A (en) * 2005-03-03 2005-08-24 开滦(集团)有限责任公司 Coal-minin method of high-dipping thick seam
CN1888390A (en) * 2006-07-12 2007-01-03 山西潞安矿业(集团)有限责任公司 High gas yoke thick coal seam quasi-large-scale mining and high comprehensive mining low-level caving technique

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102383808A (en) * 2011-10-24 2012-03-21 山西晋城无烟煤矿业集团有限责任公司 Optimized laneway arrangement structure for high gas mining work surface
CN102505942A (en) * 2011-11-11 2012-06-20 山西晋城无烟煤矿业集团有限责任公司 Safe and fast driving method for large-section open-off cut time-by-time tunneling
CN102966354A (en) * 2012-11-09 2013-03-13 中国矿业大学(北京) Non-pillar mining method for hard roof coal wall of thick coal seam
CN102966354B (en) * 2012-11-09 2014-12-17 中国矿业大学(北京) Non-pillar mining method for hard roof coal wall of thick coal seam
CN105134212A (en) * 2015-08-10 2015-12-09 河南理工大学 Method for ensuring fully-mechanized top coal caving recovery rate of three-soft thick coal seam roadway tunneling along top
CN105156116A (en) * 2015-08-28 2015-12-16 贵州盘江精煤股份有限公司 Coal mine stoping roadway designing and constructing method
CN105156116B (en) * 2015-08-28 2017-09-12 贵州盘江精煤股份有限公司 A kind of stope of coal mines tunnel design and construction method
CN108086978A (en) * 2017-12-18 2018-05-29 太原理工大学 A kind of coal-mining method suitable for deep-well super high seam
CN108086978B (en) * 2017-12-18 2019-12-10 太原理工大学 Coal mining method suitable for deep well extra-thick coal seam

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