WO2015168972A1 - 西部沙漠化矿区浅埋煤层的风积沙空场充填方法 - Google Patents
西部沙漠化矿区浅埋煤层的风积沙空场充填方法 Download PDFInfo
- Publication number
- WO2015168972A1 WO2015168972A1 PCT/CN2014/079202 CN2014079202W WO2015168972A1 WO 2015168972 A1 WO2015168972 A1 WO 2015168972A1 CN 2014079202 W CN2014079202 W CN 2014079202W WO 2015168972 A1 WO2015168972 A1 WO 2015168972A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sand
- coal
- mining
- winch
- filling
- Prior art date
Links
- 239000004576 sand Substances 0.000 title claims abstract description 82
- 238000005065 mining Methods 0.000 title claims abstract description 80
- 239000003245 coal Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 239000011435 rock Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000011105 stabilization Methods 0.000 claims abstract description 6
- 230000000737 periodic effect Effects 0.000 claims abstract 4
- 239000010410 layer Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000002356 single layer Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000009933 burial Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/06—Filling-up mechanically
Definitions
- the invention relates to an aeolian sand empty field filling method for a shallow coal seam in a western desertification mining area, and is particularly suitable for a coal mining face with good self-stabilizing performance of the roof and a certain scale empty field.
- the western desertification mining area has shallow coal seam burial, large mining thickness, thin bedrock thickness, and aeolian sand loose layer thickness as geological structural features, and there are localized thick hydrogeological features of the aquifer in the aeolian sand loose layer.
- Mining under conditions is not only easy to cause overburden damage and surface subsidence, but also easily lead to major water inrush or sand collapse.
- Engineering practice shows that burying water or sand to bury the working face or roadway is one of the main hidden dangers that threaten mine safety.
- Filling mining is the most intuitive and effective method to solve the problems of overburden damage, surface subsidence, water inrush and sand collapse.
- coal-filling mining at home and abroad is mainly divided into three categories according to different filling materials: solid filling technology such as vermiculite, fly ash and loess, paste, paste-like filling technology, high water and super high water material filling technology.
- solid filling technology such as vermiculite, fly ash and loess, paste, paste-like filling technology, high water and super high water material filling technology.
- the object of the present invention is to solve the problems existing in the existing filling technology, and to provide an aeolian sand empty field filling method for a shallow buried coal seam in a western desertification mining area, which utilizes aeolian sand filling to solve overburden damage and surface subsidence. Problems such as water inrush and sand collapse, thereby increasing production efficiency, reducing input equipment, and reducing filling costs.
- the aeolian sand empty field filling method of the shallow buried coal seam in the western desertification mining area of the present invention comprises the following steps: a. determining the technical parameters of the coal mining face and the quicksand well according to the occurrence characteristics of the coal seam and the mining technical conditions; b Distributed fixed-point drilling: Arranging a plurality of quicksand wells leading to the surface at intervals above the coal mining face and the open space formed after mining;
- Quantitative transportation of surface surface Arrange the sand-sand winch around the surface of the sand-sand well, transport the surrounding aeolian sand to the quicksand well, control the flow of the aeolian sand, and ensure the stability and safety of the quick-sand well and its surroundings;
- a movable shuttle leveling system is arranged to assist the filling operation; the movable shuttle
- the flattening system includes a winch winch, a bucket, a pulley and a pulley track.
- the bucket is connected to the sand winch and the pulley respectively through the wire rope.
- the pulley track is placed on the roof of the roadway on both sides of the coal mining face, and the winch is arranged on the floor.
- Orbital riding the winch winch on the winch track, with the coal mining face advancing, controlling the shuttle to reciprocate shuttle movement in the empty field, so that the sand pile formed by the bottom of the flow sand well is evenly leveled, and filled in time After filling the empty field, the winch winch moves closer to the coal mining face along the winch track, and the pulley moves closer to the coal mining face along the pulley track.
- the drilling diameter of the quicksand well is not lower than the equivalent diameter when the aeolian sand falls, the equivalent diameter is 3 ⁇ 4, where 4 is the coal production capacity, the drilling diameter is generally 200 ⁇ 400mm, and the aeolian sand flow is generally 0.04 ⁇ 0.20m 3 /s
- the length of the coal mining face is limited by the amount of the downhole winch winch, not exceeding 100m
- the distance between the empty field and the strike is wider.
- the temporary support is used to increase the strength of the top plate to prolong the self-stabilization time.
- the spacing of the flow sand wells is limited by the capacity of the downhole winch winch, generally not exceeding 100m, not less than 5 ⁇ 15m.
- the invention utilizes the characteristics of small amount of surface drilling to shallow buried coal seam engineering and good self-flow performance of surface aeolian sand, and arranges drilling above the empty field formed after mining coal mining face, directly pouring the aeolian sand into the empty field , to achieve filling.
- the method opens up a new technical approach for green mining in the desertification mining area in western China, which has high production efficiency, low input equipment and low filling cost.
- the movable shuttle leveling system is simple and easy to operate. After the flat sand is accumulated, the high-efficiency filling or partially filling the empty field, the void ratio is low, the compactness is large, and the filling effect is good;
- FIG. 1 is a top plan view showing an aeolian sand empty field filling method for a shallow buried coal seam in a western desertification mining area according to the present invention.
- 2 is a schematic cross-sectional view showing an aeolian sand empty field filling method for a shallow coal seam in a western desertification mining area according to the present invention.
- 3 is a schematic perspective view of an aeolian sand empty field filling method for a shallow buried coal seam in a western desertification mining area according to the present invention.
- a. Determine the technical parameters of the coal mining face 8 and the quicksand well 1 according to the characteristics of the coal seam and the technical conditions of the mining; b. Distributed fixed-point drilling: arranged at intervals above the coal mining face 8 and the empty field 9 formed after mining Construction of multiple quicksand wells to the surface;
- Quantitative transportation of surface surface Arrange the shoal winch around the surface of the quicksand well 1 and transport the surrounding aeolian sand to the quicksand well 1 to control the flow of the aeolian sand and ensure the stability and safety of the quicksand well 1 and its surroundings;
- a movable shuttle leveling system is arranged to assist the filling operation;
- the movable shuttle leveling system comprises a sand winch 2, a bucket 3, a pulley 4, and a pulley track 5,
- the bucket 3 is connected to the sand winch 2 and the pulley 4 via the wire rope respectively, and the pulley track 5 is set on the top plate of the roadway 7 on both sides of the coal mining face 8, the winch track 6 is arranged on the floor, and the winch winch 2 is rided on the winch
- the control bucket 3 reciprocates in the empty field 9, so that the sand pile formed under the streamhole well 1 is evenly leveled, and the empty field 9 is filled in time, filling After the empty field 9, the raking winch 2 moves closer to the coal mining face 8 along the winch track 6, while the pulley 4 moves closer to the coal mining face 8 along the pulley track 5.
- the drilling diameter of the quicksand well 1 is not lower than the equivalent diameter when the aeolian sand falls, and the equivalent diameter is 3 ⁇ 4 ⁇ 3 ⁇ 4 , where the coal production capacity is, the diameter of the drilling is generally 200 ⁇ 400mm, and the flow of the aeolian sand is generally 0.04 ⁇ 0.20. m 3 /s.
- the length of the coal mining face 8 is limited by the amount of the rope capacity of the downhole winch, and generally does not exceed 100 m.
- the temporary support is used to increase the strength of the top plate to prolong the self-stabilization time.
- the spacing of the quicksand wells 1 is limited by the amount of the ropes of the downhole winch, generally not exceeding 100 m and not less than 5 to 15 m.
- the row spacing of the quicksand well 1 is consistent with the self-stabilizing span of the coal mining face 8 in the propulsion direction and the working surface period, generally not exceeding 10 ⁇ 40m, in order to minimize the accumulation of sand in the coal mining
- the carrying distance in the direction of advancement of the working face; wherein: the working face period is determined by the formula L K / ⁇ /( 3 , where: ⁇ is the old top cycle to press the lay length; R T is the old The tensile strength of the top rock layer; the load of the old top rock beam; A is the single layer thickness of the old top rock layer.
- a mine in the west is buried about 65m deep, the aeolian sand loose layer is about 45m thick, the bedrock is about 20m thick, and the coal bulk density y is 1.3t/m 3 .
- the designed mining face 8 has a length L of 90 m and a mining height H of 5.2 m.
- the empty field roof has better self-stability performance.
- the average cycle is 15m, the row spacing is 15m, and the 1-1 is arranged, and a movable shuttle leveling system based on the shoal winch is arranged.
- One shoal winch 2 is arranged on the roadway 7 on both sides of the coal mining face 8, the volume of the bucket 3 is 1.2m 3 , the total number of hoppers 3 is 2, and the capacity of the winch is 100m.
- the average working speed of bucket 3 is 1.2m/s, the daily filling and filling operation time is 0.5d, the coal mining operation time is 0.5d, and the annual working day is 330d.
- a pulley track 5 is erected on the top plate of the roadway 7 on both sides of the coal mining face 8, a winch track 6 is arranged on the floor, and the winch winch 2 is mounted on the winch track 6, with the coal mining face 8 advancing, Control the bucket 3 to reciprocate shuttle movement in the empty field 9, thereby evenly leveling the sand pile formed by the flow of the sand well 1 and filling the empty field 9 in time, after filling the empty field 9, the winch winch 2 along the winch track 6
- the coal working face 8 is moved closer, and the pulley 4 is moved closer to the coal mining face 8 along the pulley track 5.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2014393189A AU2014393189B2 (en) | 2014-05-07 | 2014-06-05 | Method for filling open stope with aeolian sand in shallow coal seam in western desertified mining areas |
RU2016120684A RU2635927C1 (ru) | 2014-05-07 | 2014-06-05 | Способ закладки открытого забоя эоловым песком в угольном пласте неглубокого залегания в западных опустыненных районах горных работ |
ZA2016/03501A ZA201603501B (en) | 2014-05-07 | 2016-05-23 | Method for filling open stope with aeolian sand in shallow coal seam in western desertified mining areas |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410191662.1A CN103939137B (zh) | 2014-05-07 | 2014-05-07 | 西部沙漠化矿区浅埋煤层的风积沙空场充填方法 |
CN201410191662.1 | 2014-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015168972A1 true WO2015168972A1 (zh) | 2015-11-12 |
Family
ID=51186983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2014/079202 WO2015168972A1 (zh) | 2014-05-07 | 2014-06-05 | 西部沙漠化矿区浅埋煤层的风积沙空场充填方法 |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN103939137B (zh) |
AU (1) | AU2014393189B2 (zh) |
RU (1) | RU2635927C1 (zh) |
WO (1) | WO2015168972A1 (zh) |
ZA (1) | ZA201603501B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113187544A (zh) * | 2021-05-28 | 2021-07-30 | 辽宁科技大学 | 一种梁式顶板结构的大型地下空区处理方法 |
Families Citing this family (6)
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CN108104816B (zh) * | 2017-11-27 | 2019-07-05 | 西北矿冶研究院 | 一种急倾斜薄矿体的上向开采方法 |
CN109519218B (zh) * | 2018-10-24 | 2020-10-16 | 新疆大学 | 利用风积沙干式填充网箱承载体充填采空区的方法 |
CN109268063B (zh) * | 2018-10-24 | 2020-10-16 | 新疆大学 | 利用风积沙充填网箱构筑沿空留巷护巷墙体的方法 |
CN109322669B (zh) * | 2018-12-04 | 2021-02-02 | 新疆大学 | 倾斜煤层采空区刚柔条带相间充填无煤柱连续开采法 |
CN110145308B (zh) * | 2019-06-21 | 2021-03-30 | 山东威斯特矿山工程科技股份有限公司 | 近水平特厚煤层集中充填巷分层迈步采充的三下采煤法 |
CN110145360A (zh) * | 2019-06-21 | 2019-08-20 | 山东威斯特矿山工程科技股份有限公司 | 一种巷道智能矸石充填机及充填方法 |
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US4340254A (en) * | 1979-02-14 | 1982-07-20 | Tatabanyai Szenbanyak | Method of mining heavy coal seams in two or more benches |
CN101806059A (zh) * | 2010-04-02 | 2010-08-18 | 中铁二局股份有限公司 | 高速公路下伏采空区地表钻孔注浆投沙工艺 |
CN201635765U (zh) * | 2010-04-02 | 2010-11-17 | 中铁二局股份有限公司 | 用于高速公路下伏采空区的投沙器 |
CN202500606U (zh) * | 2012-01-20 | 2012-10-24 | 山东大学 | 通过地面钻孔向地层空洞内填充骨料的装置 |
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SU960454A1 (ru) * | 1981-02-16 | 1982-09-23 | Предприятие П/Я А-3226 | Способ заполнени подземных пустот сыпучим материалом |
SU1244354A1 (ru) * | 1985-01-17 | 1986-07-15 | Уральский филиал Всесоюзного научно-исследовательского и проектного института галургии | Способ закладки выработанного пространства при камерной системе разработки пологих калийных пластов |
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RU2136886C1 (ru) * | 1997-12-29 | 1999-09-10 | Российский Университет Дружбы Народов | Способ управления неустойчивой кровлей в длинных очистных забоях |
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RU2278273C1 (ru) * | 2004-11-05 | 2006-06-20 | Акционерная компания "АЛРОСА" (Закрытое акционерное общество) | Способ возведения закладочного массива из твердеющих бесклинкерных смесей |
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2014
- 2014-05-07 CN CN201410191662.1A patent/CN103939137B/zh active Active
- 2014-06-05 WO PCT/CN2014/079202 patent/WO2015168972A1/zh active Application Filing
- 2014-06-05 AU AU2014393189A patent/AU2014393189B2/en not_active Ceased
- 2014-06-05 RU RU2016120684A patent/RU2635927C1/ru not_active IP Right Cessation
-
2016
- 2016-05-23 ZA ZA2016/03501A patent/ZA201603501B/en unknown
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US4340254A (en) * | 1979-02-14 | 1982-07-20 | Tatabanyai Szenbanyak | Method of mining heavy coal seams in two or more benches |
CN101806059A (zh) * | 2010-04-02 | 2010-08-18 | 中铁二局股份有限公司 | 高速公路下伏采空区地表钻孔注浆投沙工艺 |
CN201635765U (zh) * | 2010-04-02 | 2010-11-17 | 中铁二局股份有限公司 | 用于高速公路下伏采空区的投沙器 |
CN202500606U (zh) * | 2012-01-20 | 2012-10-24 | 山东大学 | 通过地面钻孔向地层空洞内填充骨料的装置 |
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CN113187544A (zh) * | 2021-05-28 | 2021-07-30 | 辽宁科技大学 | 一种梁式顶板结构的大型地下空区处理方法 |
Also Published As
Publication number | Publication date |
---|---|
RU2635927C1 (ru) | 2017-11-17 |
AU2014393189A1 (en) | 2016-07-14 |
ZA201603501B (en) | 2017-07-26 |
AU2014393189B2 (en) | 2016-12-01 |
CN103939137A (zh) | 2014-07-23 |
CN103939137B (zh) | 2015-12-02 |
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