摘要
介绍了前人对复合顶板的众多定义,并结合各定义的总结,给出了一个更为切合实际的复合顶板的概念,根据在复合顶板破坏前及破坏的临界状态顶板各岩层的变形曲率相同,将顶板所受的荷载分配到各岩层中,进而分析复合顶板各岩层的受力状态。结合亭南煤矿204辅助运输巷验证了复合顶板的失稳破坏规律。
The paper gives a more practical concept of composite roof based on the analysis of the concepts of composite roof defined by predecessors. According to the same deformation curvature of rock stratum of composite roof before failure and critical failure, the stress distributions of rock stratum can be analyzed. At last, the instable failure rules of composite roof were verified combined with N0204 auxiliary transportation roadway of Tingnan Coal Mine.
出处
《陕西煤炭》
2014年第5期35-38,共4页
Shaanxi Coal
关键词
煤层巷道
复合顶板
失稳破坏
软弱夹层
coal roadway
composite roof
instable failure
weak interlayer
