山东煤炭科技2024，Vol.42Issue(3)：16-19,4.DOI:10.3969/j.issn.1005-2801.2024.03.004
近距离煤层综采工作面过上覆采空区煤柱技术研究
Research on Technology of Close Distance Coal Seam Fully Mechanized Mining Face Passing Through Overlying Goaf Coal Pillar
郭兴川 1郑文贤2
作者信息
- 1. 山西省能源发展中心,山西 太原 030012
- 2. 西山煤电(集团)有限责任公司,山西 太原 030200
- 折叠
摘要
Abstract
In view of the safety issue of dynamic load mine pressure occurring when the 14307 fully mechanized mining face close distance underlying coal seam passes through the overlying goaf leftover coal pillars of Xiqu Mine in Xishan Coal Electricity,through applying hydraulic fracturing technology,a certain number of boreholes in the surrounding rock of the high stress area roadway are set up.Under the action of hydraulic fracturing,the residual coal pillars are destroyed in advance,reducing the pressure bearing capacity of the coal pillars boundaries.In addition,various methods such as online monitoring of the roof,observation of the roadway surrounding rock,anchor rod(cable)dynamometer observation and so on are used to guide and verify on site,effectively solving the problem of dynamic pressure accidents that are prone to occur when close distance coal seam fully mechanized mining faces passing through overlying goaf coal pillars.关键词
近距离煤层/采空区/遗留煤柱/矿压显现/水力压裂Key words
close distance coal seam/goaf/leftover coal pillar/mine pressure behavior/hydraulic fracturing分类
矿业与冶金引用本文复制引用
郭兴川,郑文贤..近距离煤层综采工作面过上覆采空区煤柱技术研究[J].山东煤炭科技,2024,42(3):16-19,4.
