|
|
|
| Study on reasonable layout and field monitoring of bottom drainage roadway in high gas mine |
| Wang Wenming 1, He Long 2, Wang Jingyao 2, Tian Wei 2 |
| 1. Shanxi Shouyang Luyang Coal Investment and Management Co., Ltd., Jinzhong 030600, China; 2. Shanxi Shouyang Luyang Maijie Coal Industry Co., Ltd., Jinzhong 030600, China |
|
|
|
|
Abstract In order to solve the problems of gas emission, flow and accumulation caused by working face mining, and reduce the influence of working face mining on the roof and floor of bottom drainage roadway, this paper takes 150505 working face of Maijie Coal Industry as the engineering background, and uses theoretical analysis, numerical simulation and field monitoring methods to study the best layer of bottom drainage roadway in this working face. Through the theory of floor slip line field, the maximum failure depth of the floor is 31.58 m, and the failure depth of the floor is 30.90 m by FLAC3D numerical simulation software. Through the field monitoring, the final change of the displacement of the roof and floor of the roadway is 450 mm, and the shrinkage of the two sides is 370 mm. Finally, it is determined that the best horizon of the bottom drainage roadway is arranged at about 32 m, which can meet the needs of safety production. This study can not only solve the problem of gas emission in the coal mine, but also provide reference for the selection of the bottom drainage roadway with similar geological conditions.
|
|
|
|
|
|
| [ 1 ] 钱鸣高,许家林. 煤炭开采与岩层运动[ J ]. 煤炭学报,2019,44( 4 ):973 - 984.
[ 2 ] 钱鸣高,许家林,王家臣. 再论煤炭的科学开采[ J ]. 煤炭学报,2018,43( 1 ):1 - 13.
[ 3 ] 周雁彬. 浅谈孟津煤矿二1煤工作面底板瓦斯抽放巷的层位选择[ J ]. 科技创新与应用,2012( 32 ):116.
[ 4 ] 牛志清. 穿层钻孔预抽措施中底板岩巷合理布置层位选择研究[ J ]. 山西煤炭,2014,34( 8 ):5 - 7.
[ 5 ] 郭云雷,许彦鹏. 含水围岩条件下底板岩巷合理布置层位研究[ J ]. 中州煤炭,2014( 9 ):35 - 38.
[ 6 ] 杨随木. 义安矿底板抽放巷合理层位数值模拟[ J ]. 煤矿安全,2015,46( 6 ):164 - 166.
[ 7 ] 赵 帅,张志佳. 高瓦斯突出矿井底抽巷一巷多用技术研究与实践[ J ]. 能源与环保,2020,42( 11 ):47 - 50.
[ 8 ] 蒋先统. 浅埋复合关键层工作面底抽巷布置研究[ J ]. 煤炭技术,2017,36( 12 ):53 - 56.
[ 9 ] 程志恒. 底抽巷穿层钻孔封孔深度与布孔间距优化研究[ J ]. 煤炭科学技术,2017,45( 2 ):76 - 82.
[ 10 ] 李永恩. 深部承压水上底抽巷围岩破坏规律及合理位置[ D ]. 北京:中国矿业大学( 北京 ) ,2018.
[ 11 ] 宋洪阳,李 波,秦 坤. 云盖山煤矿底抽巷穿层钻孔抽采有效影响半径研究[ J ]. 能源与环保,2018,40( 12 ):62 - 68.
[ 12 ] 阴永生,年 军,吕晓波. 底抽巷“一巷三用”煤与瓦斯共采技术[ J ]. 煤矿安全,2017,48( 6 ):149 - 151,155.
[ 13 ] 崔玉攀,孙 谦,郭昌贵,等. 糯东煤矿底抽巷快速掘进影响因素分析及实践[ J ]. 能源与环保,2020,42( 8 ):204 - 206,212.
[ 14 ] 涂冬平. 软岩保护层开采底抽巷穿层卸压抽采瓦斯技术研究[ J ]. 能源与环保,2020,42( 10 ):17 - 20.
[ 15 ] 国家煤矿安全监察局. 《防治煤与瓦斯突出细则》读本[ M ]. 北京:煤炭工业出版社,2019.
[ 16 ] 钱鸣高,石平五,许家林. 矿山压力与岩层控制[ M ]. 徐州:中国矿业大学出版社,2010:70 - 84.
[ 17 ] 程 辉,赵洪宝,徐建峰,等. 基于滑移线场理论的巷道底鼓机理与防治技术研究[ J ]. 矿业科学学报,2021,6( 3 ):314 - 322.
[ 18 ] 刘伟韬,穆殿瑞,杨 利,等. 倾斜煤层底板破坏深度计算方法及主控因素敏感性分析[ J ]. 煤炭学报,2017,42( 4 ):849 - 859. |
|
|
|