山东煤炭科技Issue(4)：163-165,3.DOI:10.3969/j.issn.1005-2801.2015.04.74
定向水力压裂弱化坚硬顶板技术应用研究
Applied research of the directional hydraulic fracturing technology in weakening hard roof
杨胜利1
作者信息
- 1. 山西晋城煤业集团寺河煤矿二号井，山西 晋城 048000
- 折叠
摘要
Abstract
Aiming at the problem of the collapsing dififculty and hanging the big area roof in 15# coal seam hard roof of Sihe Coal Mine No.2 shaft, this paper introduces the drawbacks using the deep hole blasting technology in two entries in past to govern K2 limestone, and points out the difference with the directional hydraulic fracturing technology, through the geological mechanics of surrounding rock test, and put forward reasonable parameters of directional hydraulic fracturing of hard roof weakening of new technologies, and gives the engineering practice in 151305 working face. The practice results indicated that:the expansion radius of the hydraulic fracturing is about 20~25m, sequentially layered roof caving, and achieved signiifcant results.关键词
坚硬顶板/定向水力压裂/扩展半径/顶板弱化Key words
hard roof/directional hydraulic fracturing/expansion radius/roof weakening引用本文复制引用
杨胜利..定向水力压裂弱化坚硬顶板技术应用研究[J].山东煤炭科技,2015,(4):163-165,3.
