过断层破碎带瓦斯应力分析及抽放工艺设计

Gas Stress Analysis and Design of Drainage Process in Fault Broken Zone

摘要: 针对李村煤矿1301工作面过断层破碎带瓦斯抽放问题,采用FLAC^3D Extrusion数值分析软件模拟工作面过断层模型,得到了瓦斯应力异常区与覆岩载荷的应力贯通距离为距前方断层20 m处,应在此范围内进行瓦斯超前预抽放。并针对在瓦斯抽放过程中由于断层破碎带内应力较大产生的卡钻、吸钻问题,提出了空压机“孔内高压”抽采工艺,优化了瓦斯超前预抽采方案,提高了瓦斯抽放工效。
- 断层破碎带 /
- 岩涂抹层 /
- LAC^3D数值模拟 /
- 斯抽放 /
- 低风压
Abstract: According to the gas drainage problem of the fault fracture zone in 1301 working face of Licun Coal Mine, the FLAC^3D Extrusion numerical analysis software was used to simulate the working face crossing fault model. The stress penetration distance between the gas stress anomaly zone and the overburden load is 20 m away from the front fault. Gas pre-dumping should be carried out within this range. Aiming at the problem of stuck and suction drilled in the gas drainage process due to the large internal stress of the fracture zone, the extraction technology of “high pressure in hole” with air compressor was proposed, and the gas pre-extraction plan was optimized, and the efficiency of gas drainage was improved.
- fault fracture zone /
- udstone smear /
- LAC^3D numerical simulation /
- as drainage /
- inimum wind pressure

[1]	蔡胜海.FLAC^3D断层模拟中接触面法与弱化法的研究及应用[D].徐州:中国矿业大学,2016.
[2]	鲁义,申宏敏,秦波涛,等.顺层钻孔瓦斯抽采半径及布孔间距研究[J].采矿与安全工程学报,2015(1):156-162.
[3]	肖峻峰,陈洋洋,李平,等.深井高瓦斯工作面“一巷多用”瓦斯治理新模式[J].煤炭学报,2015,40(10):2414.
[4]	边小峰,毕建乙,张辉,等.基于COMSOL的顺层钻孔瓦斯抽采半径技术研究[J].煤炭与化工,2018,41(5):92-97.
[5]	李胜.采煤工作面煤与瓦斯突出危险性智能判识技术[J].中国安全科学学报,2016,26(10):76-81.
[6]	祁和刚.深部高应力巷道综合卸压技术研究与实践[J].采矿与安全工程学报,2016,33(6):1023-1029.
[7]	魏宗勇,李莉,李树刚,等.覆岩采动裂隙中瓦斯运移三维实验台的研制与应用[J].煤矿安全,2015,46(7):5-8.
[8]	周波,程建圣.低透气性突出煤层群瓦斯综合治理技术[J].煤炭工程,2017,49(9):87-90.
[9]	周西华,王鹏辉,门金龙,等.高瓦斯特厚煤层下分层千米钻孔瓦斯抽采技术[J].煤田地质与勘探,2016, 44(4):20-24.
[10]	赵鹏翔,李树刚,刘殿福,等.倾斜综放工作面采动卸压瓦斯高位钻孔抽采技术研究[J].煤炭工程,2017, 49(5):76-79.

1.	衡献伟，付金磊，李青松，左金芳 . 突出煤层微震动态响应与多参量指标预警方法. 湖南科技大学学报(自然科学版). 2022(04): 1-8 . 百度学术
2.	李晋阳. 矿井生产中高位钻孔瓦斯抽放技术应用分析. 能源与节能. 2020(09): 184-185 . 百度学术