|
|
|
| Application research on high gas extraction technology in goaf |
| Chen Deshan 1, Zhang Jianjiang 2, Yang Wanxin 1 |
| 1. College of Resource and Environmental Engineering, Lanzhou Petrochemical Polytechnic University, Lanzhou 730207,China; 2. Jingyuan Coal Group Weijiadi Mine, Baiyin 730913, China |
|
|
|
|
Abstract During the mining process of the north 1103 working face of Weijiadi Coal Mine, the gas in the goaf will flood into the working face in large quantities, causing the gas in the upper corner and the return airway to exceed the limit. In order to control the gas in the goaf, the drilling parameters were calculated and the layout scheme was designed. The No.1 and No.2 drilling fields were successively excavated in the return air roadway of the north 1103 working face, and the high-level gas drilling was used to carry out the gas drainage operation and monitor and analyze the gas changes in the upper corner and the return air roadway. The results show that during the extraction of No.1 drilling field, the average gas concentration in the upper corner of the working face is 0.48 %, and the average gas concentration in the return airway is 0.25 %. During the extraction of No.2 drilling field, the average gas concentration in the upper corner of the working face is 0.37 %, and the gas concentration in the return airway is 0.22 %. The average gas concentration is below 0.5 %, and there is no gas overrun. The gas extraction effect is remarkable. The treatment method and design can provide reference for related engineering projects.
|
|
|
|
|
|
| [ 1 ] 郭明杰,郭文兵,赵高博,等.长壁开采覆岩内水平定向长钻孔位置特征与卸压瓦斯抽采机理[J/OL].煤炭学报:1 - 16[2023-01-19].
[ 2 ] 陈功华,魏泽云,梁道富,等. 近距离煤层群高位定向长钻孔瓦斯抽采实践[ J ]. 矿业安全与环保,2019,46( 5 ):66 - 69,74.
[ 3 ] 石 浩. 大直径高位定向长钻孔瓦斯抽采技术及应用[ J ]. 煤炭科学技术,2018,46( 10 ):190 - 195.
[ 4 ] 倪廉钦,高 杰. 上隅角错距式双埋管瓦斯抽采技术参数研究[ J ]. 煤炭工程,2022,54( 5 ):63 - 67.
[ 5 ] 崔鹏飞,陈向军,李新建,等. 成庄矿4321工作面瓦斯治理技术研究[ J ]. 煤炭技术,2022,41( 11 ):143 - 147.
[ 6 ] 贾晓亮. 老厂矿区高位定向长钻孔“以孔代巷”瓦斯抽采技术研究[ J ]. 矿业安全与环保,2021,48( 5 ):103 - 107.
[ 7 ] 许石青,余 婕,田世祥,等. 采空区瓦斯高位定向长钻孔抽采技术研究[J].矿业研究与开发,2021,41( 4 ):27 - 31.
[ 8 ] 林海飞,杨二豪,夏保庆,等. 高瓦斯综采工作面定向钻孔代替尾巷抽采瓦斯技术[ J ]. 煤炭科学技术,2020,48( 1 ):136 - 143.
[ 9 ] 童 碧,许 超,王 鲜,等. 淮南矿区复杂顶板高位定向孔复合排渣钻进技术[ J ]. 煤炭科学技术,2020,48( S1 ):140 - 143.
[ 10 ] 陶云奇,张剑钊,郭明功,等. 采动卸压瓦斯抽采以孔代巷技术研究与工程实践[ J ]. 矿业安全与环保,2022,49( 5 ):43 - 48.
[ 11 ] 陈广金,程志恒,周礼杰,等. 水力耦合条件下近距离煤层采动裂隙动态演化规律探究[ J ]. 煤炭工程,2022,54( 10 ):117 - 123.
[ 12 ] 陈庆发,林开汕,吴家有,等. 顶板诱导崩落工程覆岩裂隙的空间分布规律与共轭现象[ J ]. 中南大学学报(自然科学版),2022,53( 10 ):4 085 - 4 095.
[ 13 ] 冯 捷. 东庞矿采煤工作面高位瓦斯抽采钻孔应用研究[ J ]. 煤炭与化工,2021,44( 3 ):117 - 120.
[ 14 ] 焦彦锦,朱建芳,耿 瑶,等. 采空区覆岩“竖三带”孔隙率三维分布研究[ J ]. 煤矿安全,2021,52( 11 ):159 - 165.
[ 15 ] 赵 杰,刘 健,王新颖,等. 高瓦斯煤层高位钻孔瓦斯抽采技术试验研究[ J ]. 煤炭技术,2012,31( 12 ):72 - 74.
[ 16 ] 赵和平,王向东. 基于“三区联动”的近距离突出煤层群区域瓦斯治理技术体系研究[ J ]. 煤炭技术,2022,41( 9 ):138 - 142.
[ 17 ] 孟宇平. 煤层覆岩“两带”高度探测方法对比[ J ]. 中国煤炭
地质,2022,34( S1 ):67 - 71. |
|
|
|