WO2016112749A1 - 充填墙体自消除的无煤柱沿空留巷方法 - Google Patents
充填墙体自消除的无煤柱沿空留巷方法 Download PDFInfo
- Publication number
- WO2016112749A1 WO2016112749A1 PCT/CN2015/095905 CN2015095905W WO2016112749A1 WO 2016112749 A1 WO2016112749 A1 WO 2016112749A1 CN 2015095905 W CN2015095905 W CN 2015095905W WO 2016112749 A1 WO2016112749 A1 WO 2016112749A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wall
- filling
- coal
- mining
- filling wall
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003379 elimination reaction Methods 0.000 title abstract description 7
- 238000005065 mining Methods 0.000 claims abstract description 64
- 239000003245 coal Substances 0.000 claims abstract description 63
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 12
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000003763 carbonization Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000008092 positive effect Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 238000013022 venting Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
- E21F15/04—Stowing mats; Goaf wire netting; Partition walls
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Definitions
- the invention relates to the technology of retaining lanes along the air, in particular to a method for retaining lanes without coal pillars which is suitable for the self-removal of the filling wall in the field of roadway supporting engineering.
- the existing roadway retaining technology can cancel the coal pillar between the working faces, but leaves a filling wall with the same length as the working surface.
- the width of the filling wall is about 0.5 to 1.5 times that of the mining height. . That is to say, the current technology of retaining lanes along the air is to replace the tens of meters of coal pillars with a filling wall of several meters wide. Since the strength of the filling wall is higher than that of the coal body, the concentrated stress on the filling wall is stronger than that of the same size coal body. Although the width of the filling wall is small, it is still affected by the falling angle of the rock layer. A large range of stress concentration areas are generated in the rock formation, which is not conducive to the safe mining of adjacent coal seams. In order to avoid the influence of the stress concentration zone, large coal pillars have to be left in the mining of adjacent layers, resulting in a serious waste of resources.
- the technical difficulty of deep coal mining is increased due to the increase of ground stress.
- a simple coal seam is first selected for mining, and the pressure relief of adjacent coal seam is realized by the technology of no coal pillars along the goaf to reduce the adjacent complex coal seam.
- the difficulty of mining As the depth of coal mining in China continues to increase, the technology of retaining roadway along the coal-free column has increasingly demonstrated its remarkable technical advantages.
- the existing roadway retaining method has largely restricted the pressure relief range of the close coal seam group protective layer mining, which hindered the The development of continuous pressure relief mining technology.
- the object of the present invention is to overcome the deficiencies in the prior art, and to provide an air-filled roadway method for self-eliminating a filling wall without a coal pillar and a rock pillar.
- the method for retaining the wall of the non-coal pillar without self-removing of the filling wall of the present invention comprises the following steps:
- step a to mason the next filling wall until the mining section of the upper section ends mining, masonry When the next wall is filled, the flexible molded bags are tightly connected;
- the remaining roadway along the empty space is used as a mining roadway for the coal mining face of the lower section.
- the flexible die bag behind the goaf of the coal mining face of the lower section is cut, so that The flexible mold bag loses the sealing and restraining effect on the filling wall;
- step c as the coal mining work in the lower section advances forward, until the mining of the lower section coal mining face ends;
- the width of the filling wall is 0.5 to 1.5 times of the average mining height of the working surface, and the height is equal to the mining height, and the length of each wall is 1.8 to 3.0 m.
- the ventilating tube comprises a vent tube, the front end of the vent tube is a threaded tube, and the rear end is a threaded sleeve that can cooperate with the front end.
- the vent tube is provided with a plurality of cross-disposed venting branch tubes, a surface of the vent tube and the venting branch tube. There are a plurality of vent holes respectively.
- the carbon dioxide injected into the filling wall is dry or water vapor containing carbon dioxide gas.
- the present invention Since the above technical solution is adopted, the present invention has the following advantages compared with the prior art:
- the sealing condition of the flexible mold bag can avoid the weathering effect of the filling wall, and can fully exert the high support performance of the wall of the high water material.
- the carbon dioxide is injected through the ventilation pipe to promote the rapid carbonization and decomposition of the filling wall from the inside, so that the filling wall can be self-erased, and the stress concentration caused by the filling of the wall is avoided, and the upper and lower adjacent
- the effect of sufficient pressure relief of coal seams has a positive effect on the maintenance of mining space, gas drainage and prevention of power disasters.
- Figure 1 is a schematic view of an empty roadway of the present invention.
- Figure 2 is a schematic view showing the structure of the vent pipe of the present invention.
- the roadway wall of the present invention has a self-eliminating coal pillar-free roadway method, and when the upper coal mining face 1 is mined, along the edge of the goaf 2, to the flexible mold bag. 3 pumping high-water material, constructing a wall-filling wall 4, and pre-positioning the vent pipe 6 in the filling wall 4, mining the coal mining face 7 in the lower section, the coal working face 7 behind The flexible mold bag 3 is cut, and after the completion of the mining, carbon dioxide is injected into the vent pipe 6, which causes the carbonization reaction of the filling wall to be broken and decomposed, thereby realizing the self-elimination of the wall along the roadway.
- the specific implementation steps are as follows:
- a flexible mould bag 3 is placed along the edge of the goaf 2 to pump the high water material into the flexible mould In the bag 3, a wall is filled into the wall 4, so that the roadway behind the coal mining face 1 of the upper section is formed along the empty roadway 5.
- the impermeable film is pre-packaged in the filling wall 4.
- the vent pipe 6 includes a vent pipe 6-1, the front end of the vent pipe 6-1 is a threaded pipe 6-2, and the rear end is a threaded sleeve 6-5 that can be engaged with the front end, and the vent pipe 6
- the upper spacer package has a plurality of venting branch pipes 6-4 arranged at an intersection, and the surfaces of the vent pipe 6-1 and the venting branch pipe 6-4 are respectively provided with a plurality of vent holes 6-3.
- step b masonry the next filling wall 4, until the upper section of the coal mining face 1
- the flexible molding bags 3 are tightly connected, and the ventilation pipes 6 in the multi-filled wall 4 are screwed together to form a ventilation pipe, and the filling wall is formed.
- the width of the body 4 is 0.5 to 1.5 times the average height of the working face, and the height is equal to the height of the mining.
- the length of each wall 4 is 1.8 to 3.0 m.
- the remaining roadway 5 is used as a mining roadway of the lower section coal mining face 7, and when the coal mining face of the lower section is mined, the flexible mould bag behind the goaf of the lower section coal mining face 7 3 cutting, so that the flexible mold bag 3 loses the sealing and restraining effect on the filling wall 4;
- step c repeats multiple times until the mining section 7 of the lower section ends.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
Claims (4)
- 一种充填墙体自消除的无煤柱沿空留巷方法,其特征是包括如下步骤:a.开采上区段采煤工作面(1)的过程中,在位于上区段采煤工作面(1)的后方,沿着采空区(2)的边缘安置柔性模袋(3),将高水材料泵入柔性模袋(3)内,砌筑成一垛充填墙体(4),使上区段采煤工作面(1)后方的巷道形成沿空留巷(5),砌筑过程中,在充填墙体(4)内预置包有防渗薄膜的通风管(6);b.随着上区段采煤工作面(1)向前推进并在其后方形成足够的充填空间时,重复步骤a,砌筑下一垛充填墙体(4),直至上区段采煤工作面(1)回采结束,砌筑下一垛充填墙体(4)时,使柔性模袋(3)之间紧密连接;c.将沿空留巷(5)作为下区段采煤工作面(7)的一条回采巷道,开采下区段采煤工作面(7)时,将下区段采煤工作面(7)采空区后方的柔性模袋(3)割破,使柔性模袋(3)失去对充填墙体(4)的封闭和约束作用;d.随着下区段采煤工作面(7)向前推进,重复步骤c,直至下区段采煤工作面(7)回采结束;e.通过通气管(6)向充填墙体(4)内注入二氧化碳,促使充填墙体(4)发生碳化反应并破碎分解,实现充填墙体(4)的自消除。
- 根据权利要求1所述的充填墙体自消除的无煤柱沿空留巷方法,其特征是:所述的充填墙体(4)宽度为工作面平均采高的0.5~1.5倍,高度与采高相等,每垛墙体的长度为1.8~3.0m。
- 根据权利要求1所述的充填墙体自消除的无煤柱沿空留巷方法,其特征是:所述的通风管(6)包括通气管(6-1),通气管(6-1)的前端为螺纹管(6-2),后端为可与前端配合的螺纹套管(6-5),通气管(6-1)上间隔套装有多个交叉布置的通气支管(6-4),通气管(6-1)和通气支管(6-4)的表面分别开有多个通气孔(6-3)。
- 根据权利要求1所述的充填墙体自消除的无煤柱沿空留巷方法,其特征是:所述向充填墙体(4)内注入的二氧化碳为干燥的或者带有水汽的二氧化碳气体。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2015377002A AU2015377002B2 (en) | 2015-01-14 | 2015-11-30 | Non-coal-pillar gob-side entry retaining method having filling-wall self-elimination |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510018347.3 | 2015-01-14 | ||
CN201510018347.3A CN104727847B (zh) | 2015-01-14 | 2015-01-14 | 充填墙体自消除的无煤柱沿空留巷方法 |
Publications (1)
Publication Number | Publication Date |
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WO2016112749A1 true WO2016112749A1 (zh) | 2016-07-21 |
Family
ID=53452187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2015/095905 WO2016112749A1 (zh) | 2015-01-14 | 2015-11-30 | 充填墙体自消除的无煤柱沿空留巷方法 |
Country Status (3)
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CN (1) | CN104727847B (zh) |
AU (1) | AU2015377002B2 (zh) |
WO (1) | WO2016112749A1 (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105114080A (zh) * | 2015-08-11 | 2015-12-02 | 冀中能源峰峰集团有限公司 | 一种保护层及无人化薄煤层开采方法 |
CN105350966B (zh) * | 2015-10-29 | 2017-08-22 | 中国矿业大学(北京) | 留煤柱开采下保护层实现上被保护层连续卸压的方法 |
CN107503790B (zh) * | 2017-08-06 | 2018-03-30 | 陕西富源煤业有限责任公司 | 快速回采综采面瓦斯综合抽放布置治理方法 |
CN109236354B (zh) * | 2018-10-23 | 2019-10-29 | 煤科集团沈阳研究院有限公司 | 一种基于沿空留巷瓦斯治理的面式抽采方法 |
CN112796757A (zh) * | 2021-01-26 | 2021-05-14 | 扬州中矿建筑新材料科技有限公司 | 一种高水充填材料巷旁充填沿空留巷的方法 |
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-
2015
- 2015-01-14 CN CN201510018347.3A patent/CN104727847B/zh active Active
- 2015-11-30 WO PCT/CN2015/095905 patent/WO2016112749A1/zh active Application Filing
- 2015-11-30 AU AU2015377002A patent/AU2015377002B2/en not_active Ceased
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US4174135A (en) * | 1978-04-10 | 1979-11-13 | Bechtel International Corporation | Underground formed wall single-entry mining method |
WO2002033221A2 (en) * | 2000-08-15 | 2002-04-25 | Sean Philip Brennan | Explosion proof walls |
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Also Published As
Publication number | Publication date |
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AU2015377002B2 (en) | 2016-09-29 |
AU2015377002A1 (en) | 2016-09-01 |
CN104727847B (zh) | 2016-11-02 |
CN104727847A (zh) | 2015-06-24 |
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