特厚煤层切顶卸压护巷技术研究

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英文篇名：Research on Cutting Roof and Pressure Relief for Roadway Protection Technology in Extra-thick Coal Seam 作者：马国伟 英文作者：MA Guowei; 关键词：深孔预裂爆破 ; 切顶卸压 ; 两帮变形量 ; 矿压监测 英文关键词：Deep-hole pre-splitting blasting;;Roof-cutting and pressure relief;;Deformation of two side;;Mine pressure monitoring 中文刊名：山西焦煤科技 英文刊名：Shanxi Coking Coal Science & Technology 机构：山西西山晋兴能源有限责任公司斜沟煤矿; 出版日期：2019-01-15 出版单位：山西焦煤科技 年：2019 期：01 语种：中文; 页：10-12 页数：3 CN：14-1311/TD ISSN：1672-0652 分类号：TD322.5

摘要

斜沟煤矿18201工作面采动对+700 m水平南翼3条大巷破坏严重。因此,对18201工作面材料巷实施了切顶卸压技术,根据材料巷顶底板岩性,确定了合理的切顶卸压孔长度及钻孔间距;并利用FLAC3D数值软件模拟对比了切顶及不切顶条件下,辅运大巷的应力分布情况,对+700 m南翼辅运大巷两帮移近量的观测结果表明,该切顶卸压护巷方案较为合理。
        The mining of 18201 working face in Xiegou coal mine seriously damaged 3 roadways of the south wing at +700 m horizontal level. Therefore, the roof-cutting pressure relief technology was applied to the roadway of 18201 working face. The reasonable length and spacing of the drilling holes for roof-cutting and pressure relief were determined according to the lithology of the roadway, FLAC3 D numerical software was introduced for stress distribution comparison under the condition of before and after the roof-cutting. Observation shows that the scheme for roof-cutting and pressure relief is more feasible.

引文

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