202108

大采深条件下小煤柱沿空掘巷技术研究
发布人:网站管理员 发布时间:2021/8/23 点击次数:102次
  

大采深条件下小煤柱沿空掘巷技术研究
王春进1,冯鑫2,宋刚2,郭宁2,黎勇2
(1. 晋能控股煤业集团沁秀煤业有限公司,山西 晋城 048006;2. 中国矿业大学煤炭资源与安全开采国家重点实验室,
江苏 徐州 221116)
摘要: 以晋能控股煤业集团A 矿5328 工作面提供的地质资料为基础,通过建立上覆岩层结构模型,分析上覆岩层结
构及其稳定性;针对5317 工作面和5328 工作面所留设的小煤柱开掘新巷道形成复杂的应力条件,通过理论分析和软件
模拟得到合理的煤柱尺寸,从而论证了在破碎围岩条件下,小煤柱沿空掘巷技术的可行性以及在这种条件下应留设煤柱
的最小宽度。
关键词: 破碎围岩;小煤柱;沿空掘巷;大采深;数值模拟
中图分类号: TD822+.3     文献标识码: A     文章编号: 2095-0802-(2021)08-0125-05
Study on Technology of Gob Side Entry Driving with Small Coal Pillars under Condition of
Large Mining Depth
WANG Chunjin1, FENG Xin2, SONG Gang2, GUO Ning2, LI Yong2
(1. Qinxiu Coal Industry Co., Ltd., Jinneng Holding Coal Industry Group, Jincheng 048006, Shanxi, China; 2. State Key
Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China)
Abstract: Based on the geological data provided by the 5328 working face of A Mine of Jinneng Holdings Coal Industry Group,
through the establishment of an overlying strata structure model, this paper analyzed the structure and stability of overlying strata,
obtained reasonable coal pillar size through theoretical analysis and software simulation aiming at the complex stress conditions
formed by excavating new roadways with the small coal pillars set in 5317 working face and 5328 working face, thus demonstrating
the feasibility of the technology of gob side entry driving with the small coal pillars under the condition of broken surrounding
rock and the minimum width of coal pillars should be reserved under this condition.

 Key words: broken surrounding rock; small coal pillar; gob side entry driving; large mining depth; numerical simulation