近距离煤层采动下底板巷道围岩应力分布与变形破坏特征  

Stress Distribution and Deformation Failure Characteristics of the Floor Roadway Surrounding Rock Under Close Distance Coal Seam Mining

作　　者：谢汉峰 Xie Hanfeng(Linfen Hongda Jincheng Coal Industry,Shanxi Linfen 041000)

机构地区：[1]临汾宏大锦程煤业,山西临汾041000

出　　处：《山东煤炭科技》2023年第8期175-177,共3页Shandong Coal Science and Technology

摘　　要：为揭示近距离煤层采动下底板巷道围岩变形特征,采用理论分析和现场测试的方法,理论计算和现场实测了试验工作面采空区下底板破坏深度,分析了上煤层工作面回采对底板巷道的扰动影响规律,上煤层工作面回采对底板巷道产生扰动影响具有时间性和空间性,可采取超前加强支护或提高工作面推进速度的方法,缓解上煤层工作面回采对底板巷道的扰动影响。In order to reveal the deformation characteristics of the floor roadway surrounding rock under close distance coal seam mining,theoretical analysis and on-site testing methods are used to theoretic calculate and on-site measure the depth of the floor failure under the goaf of the experimental working face.The disturbance impact laws of the upper coal seam working face on the floor roadway are analyzed,and the disturbance impact of the upper coal seam working face mining on the floor roadway is temporality and spatiality,the method of strengthening support in advance or increasing the advancing speed of the working face can be adopted to alleviate the disturbance impact of the upper coal seam working face mining on the floor roadway.

关 键 词：近距离煤层 底板巷道 应力分布 变形破坏 现场测试 

分 类 号：TD322[矿业工程—矿井建设]