坚硬石灰岩顶板大采高无煤柱沿空留巷围岩结构及变形特征  

Surrounding Rock Structure and Deformation Characteristics of Gob-side Retaining Roadway with Large Mining Height and No Coal Pillar on Hard Limestone Roof

作　　者：范子伟 FAN Ziwei(Shanxi Coal Group Coal Industry Management Co., Ltd. , Taiyuan 030006 ,China)

机构地区：[1]山煤集团煤业管理有限公司,山西太原030006

出　　处：《煤矿现代化》2019年第4期178-180,共3页Coal Mine Modernization

摘　　要：对现阶段坚硬顶板大采高工作面沿空留巷围岩变形较大等问题,针对凌志达煤矿15210大采高工作面,采用理论分析、数值模拟、现场试验分析了沿空留巷顶板岩层大面积来压的原因,并选定了聚能爆破切顶技术基本参数,进行了数值模拟验证,取得了良好的应用效果。In view of the problem of large deformation of surrounding rock in gob-side entry retained in hard roof face with large mining height at present, the reasons for large area weighting of roof rock in gob-side entry retained in 15210 large mining height face of Lingzhida Coal Mine are analyzed by theoretical analysis, numerical simulation and field test, and the basic technical parameters of roof cutting by concentrative blasting are selected. The numerical simulation validates that good application results have been achieved.

关 键 词：坚硬顶板 沿空留巷 围岩变形 

分 类 号：TD32[矿业工程—矿井建设]