| Citation: |
LI Teng，JIANG Yongdong，LIU Huajun，et al. Research on gob-side entry retaining technology inclined fully mechanized mining face with large mining height[J]. Coal Science and Technology，2024，52（S2）：1−9. DOI: 10.12438/cst.2023-1358
|
In order to solve obvious dynamic pressure and support problems of gob-side entry retaining in steeply inclined fully-mechanized mining face with large mining height, taking 31111 fully-mechanized mining face in Shidonggou Coal Mine of Sichuan Coal Group as the research background, through theoretical analysis and field monitoring, the periodic weighting step of 31111 fully mechanized mining face is about 16.4 m, and the influence range of abutment pressure in front of coal wall is about 40 m. The advance support distance of 31111 roadway is defined. Combined with the three-dimensional positioning technology of microseismic monitoring, the range of ' three zones ' ( the influence zone of abutment pressure of coal wall is about 40 m, the separation zone is 122～144 m ) and ' three zones ' ( the caving zone of roof is 0～2 m, the fracture zone is 2～30 m, and the bending subsidence zone is 30～96 m ) of 31111 fully mechanized mining face is obtained, and the periodic fracture law of steeply inclined and large mining height strata and the characteristics of '厂' type moving arch are revealed, which provides data support for subsequent pressure prediction and implementation of gob-side entry retaining. Based on the deformation and pressure distribution law of roadway surrounding rock in the mining process, the method of gob-side entry retaining with bow-shaped flexible shield support + anchor net cable combined support is proposed in the non-fault zone, and the method of gob-side entry retaining with bow-shaped flexible shield support + anchor net cable + gangue cemented filling combined support is proposed in the fault zone. The field engineering practice shows that the method is rigid and flexible, which has a good supporting and shielding effect on the caving gangue in the goaf, ensures the safety of gob-side entry retaining, and realizes the safe and economic mining without coal pillar in the mine.
| [1] |
王家臣. 我国综放开采40年及展望[J]. 煤炭学报,2023,48(1):83−99.
WANG Jiachen. 40 years development and prospect of longwall top coal caving in China[J]. Journal of China Coal Society,2023,48(1):83−99.
|
| [2] |
康红普,张晓,王东攀,等. 无煤柱开采围岩控制技术及应用[J]. 煤炭学报,2022,47(1):16−44.
KANG Hongpu,ZHANG Xiao,WANG Dongpan,et al. Strata control technology and applications of non-pillar coal mining[J]. Journal of China Coal Society,2022,47(1):16−44.
|
| [3] |
柏建彪,张自政,王襄禹,等. 高水材料充填沿空留巷应力控制与围岩强化机理及应用[J]. 煤炭科学技术,2022,50(6):16−28.
BAI Jianbiao,ZHANG Zizheng,WANG Xiangyu,et al. Stress control and surrounding rock strengthening mechanism of gob-side entry retaining with high-water content material filling and its application[J]. Coal Science and Technology,2022,50(6):16−28.
|
| [4] |
郭海军,杜怀龙. 厚煤层沿空留巷柔模混凝土充填体合理宽度确定[J]. 煤炭科学技术,2022,50(S2):105−112.
GUO Haijun,DU Huailong. Determination of reasonable width of flexible formwork concrete filling body for gob-side entry retaining in thick coal seam[J]. Coal Science and Technology,2022,50(S2):105−112.
|
| [5] |
陈勇,柏建彪,朱涛垒,等. 沿空留巷巷旁支护体作用机制及工程应用[J]. 岩土力学,2012,33(5):1427−1432. doi: 10.3969/j.issn.1000-7598.2012.05.023
CHEN Yong,BAI Jianbiao,ZHU Taolei,et al. Mechanisms of roadside support in gob-side entry retaining and its application[J]. Rock and Soil Mechanics,2012,33(5):1427−1432. doi: 10.3969/j.issn.1000-7598.2012.05.023
|
| [6] |
谭云亮,于凤海,宁建国,等. 沿空巷旁支护适应性原理与支护方法[J]. 煤炭学报,2016,41(2):376−382.
TAN Yunliang,YU Fenghai,NING Jianguo,et al. Adaptability theory of roadside support in gob-side entry retaining and its supporting design[J]. Journal of China Coal Society,2016,41(2):376−382.
|
| [7] |
康红普,牛多龙,张镇,等. 深部沿空留巷围岩变形特征与支护技术[J]. 岩石力学与工程学报,2010,29(10):1977−1987.
KANG Hongpu,NIU Duolong,ZHANG Zhen,et al. Deformation characteristics of surrounding rock and supporting technology of gob-side entry retaining in deep coal mine[J]. Chinese Journal of Rock Mechanics and Engineering,2010,29(10):1977−1987.
|
| [8] |
陈勇,柏建彪,王襄禹,等. 沿空留巷巷内支护技术研究与应用[J]. 煤炭学报,2012,37(6):903−910.
CHEN Yong,BAI Jianbiao,WANG Xiangyu,et al. Support technology research and application inside roadway of gob-side entry retaining[J]. Journal of China Coal Society,2012,37(6):903−910.
|
| [9] |
康红普. 我国煤矿巷道围岩控制技术发展70年及展望[J]. 岩石力学与工程学报,2021,40(1):1−30.
KANG Hongpu. Seventy years development and prospects of strata control technologies for coal mine roadways in China[J]. Chinese Journal of Rock Mechanics and Engineering,2021,40(1):1−30.
|
| [10] |
黄旭超. 急倾斜煤层开采应力及裂隙演化规律研究[J]. 煤炭科学技术,2018,46(S1):93−96.
HUANG Xuchao. Study on stress and fracture evolution law of steeply inclined coal seam mining[J]. Coal Science and Technology,2018,46(S1):93−96.
|
| [11] |
王红伟,焦建强,伍永平,等. 急倾斜厚煤层短壁综放采场承载结构泛化特征[J]. 煤炭科学技术,2021,49(11):56−64.
WANG Hongwei,JIAO Jianqiang,WU Yongping,et al. Generalization characteristics of bearing structure in short wall fully-mechanized top-coal caving mining face of steeply inclined thick seam[J]. Coal Science and Technology,2021,49(11):56−64.
|
| [12] |
文志杰,汤建泉,王洪彪. 大采高采场力学模型及支架工作状态研究[J]. 煤炭学报,2011,36(S1):42−46.
WEN Zhijie,TANG Jianquan,WANG Hongbiao. Study on mechanical model and hydraulic support working state in mining stope with large mining height[J]. Journal of China Coal Society,2011,36(S1):42−46.
|
| [13] |
孙秉成,李春阁. 急倾斜特厚煤层复杂结构条件冲击地压防治技术[J]. 煤炭科学技术,2017,45(S1):13−15.
SUN Bingcheng,LI Chunge. Rock burst control technology of steep and extra thick coal seam under complex structure condition[J]. Coal Science and Technology,2017,45(S1):13−15.
|
| [14] |
姚琦,冯涛,廖泽. 急倾斜走向分段充填倾向覆岩破坏特性及移动规律[J]. 煤炭学报,2017,42(12):3096−3105.
YAO Qi,FENG Tao,LIAO Ze. Damage characteristics and movement of inclined strata with sublevel filling along the strike in the steep seam[J]. Journal of China Coal Society,2017,42(12):3096−3105.
|
| [15] |
任超. 大采高综采工作面沿空留巷工艺顶板管控技术分析[J]. 煤炭科学技术,2022,50(S2):97−104.
REN Chao. Technical analysis on roof control of gob-side entry retaining process in fully-mechanized mining face with large mining height[J]. Coal Science and Technology,2022,50(S2):97−104.
|
| [16] |
周思友. 大倾角中厚煤层拱形断面复合沿空留巷技术[J]. 煤炭科学技术,2015,43(S1):67−69.
ZHOU Siyou. Compound gob-side entry retaining technology of large dip angle and thick coal seam with arch section[J]. Coal Science and Technology,2015,43(S1):67−69.
|
| [17] |
唐建新,李霜,候阳阳,等. 急倾斜三软厚煤层留小煤柱沿空护巷技术[J]. 地下空间与工程学报,2022,18(4):1392−1400.
TANG Jianxin,LI Shuang,HOU Yangyang,et al. Gob side entry protection technology of small coal pillar in steeply inclined three-soft thick coal seam[J]. Chinese Journal of Underground Space and Engineering,2022,18(4):1392−1400.
|
| [18] |
杨帆. 急倾斜煤层采动覆岩移动模式及机理研究[D]. 阜新:辽宁工程技术大学,2006.
YANG Fan. Study on movement mode and mechanism of overlying strata in steep seam mining[D]. Fuxin:Liaoning Technical University,2006.
|
| [19] |
蒋金泉. 倾斜煤层采场老顶初次来压步距的计算[J]. 矿山压力与顶板管理,1992,9(1):56−61,102−104.
JIANG Jinquan. Calculation of first weighting interval of main roof in inclined coal seam stope[J]. Ground Pressure and Strata Control,1992,9(1):56−61,102−104.
|
| [20] |
房局. 急倾斜俯伪斜采场顶板破断特征及矿压规律研究[D]. 重庆:重庆大学,2018.
FANG Ju. Study on roof breaking characteristics and ground pressure law of steep and pseudo-inclined stope[D]. Chongqing:Chongqing University,2018.
|
| [21] |
唐建新,胡海,涂兴东,等. 普通混凝土巷旁充填沿空留巷试验[J]. 煤炭学报,2010,35(9):1425−1429.
TANG Jianxin,HU Hai,TU Xingdong,et al. Experimental on roadside packing gob-side entry retaining for ordinary concrete[J]. Journal of China Coal Society,2010,35(9):1425−1429.
|
| [22] |
华心祝. 我国沿空留巷支护技术发展现状及改进建议[J]. 煤炭科学技术,2006,34(12):78−81. doi: 10.3969/j.issn.0253-2336.2006.12.027
HUA Xinzhu. Development status and improved proposals on gob-side entry retaining support technology in China[J]. Coal Science and Technology,2006,34(12):78−81. doi: 10.3969/j.issn.0253-2336.2006.12.027
|
| [23] |
张自政,柏建彪,王卫军,等. 沿空留巷充填区域直接顶受力状态探讨与应用[J]. 煤炭学报,2017,42(8):1960−1970.
ZHANG Zizheng,BAI Jianbiao,WANG Weijun,et al. Study on stress state of immediate roof above backfill area in gob-side entry retaining and its application[J]. Journal of China Coal Society,2017,42(8):1960−1970.
|
| [24] |
张东升,马立强,冯光明,等. 综放巷内充填原位沿空留巷技术[J]. 岩石力学与工程学报,2005,24(7):1164−1168. doi: 10.3321/j.issn:1000-6915.2005.07.013
ZHANG Dongsheng,MA Liqiang,FENG Guangming,et al. The technique of gob-side entry retaining with entry-in packing on its original position in fully-mechanized coalface with top-coal caving[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(7):1164−1168. doi: 10.3321/j.issn:1000-6915.2005.07.013
|
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: