摘要
针对哈拉沟煤矿排矸巷复合岩层顶板离层的问题,结合复合梁挠度的相关理论,及相关文献中的复合岩层分析过程,建立复合岩层的弯曲挠度方程。并对其顶板自下而上进行挠度计算。通过计算结果分析,排矸巷复合顶板第1层将发生离层。根据分析结果,提出哈拉沟煤矿22404排矸巷在复合岩层顶板条件下锚杆+锚索+金属网的联合支护方案。数值模拟和现场监测结果证明,该支护方案是合理的。
For Halagou mine conveyor lane compound rock strata of roof abscission layer problem, based on the relevant theory of composite beam deflection, and the compound rock strata in the related literature and analysis process, the bending deflection equation of compound rock strata is established, and the roof of its roof is calculated by deflection. Based on the calculation results, the first layer of gangue lane composite roof will occur. According to the result of analysis, the joint support scheme of rock bolt + anchor cable + metal mesh is put forward in the roof of the compound strata. Numerical simulation and field monitoring results show that the support scheme is reasonable.
作者
石志仁
陈世江
杨志东
郭国潇
SHI Zhi-ren;CHEN Shi-jiang;YANG Zhi-dong;GUO Guo-xiao(Institute of Mining, Inner Mongolia University of Science and Technology, Baotou 014010, China)
出处
《煤炭技术》
CAS
2019年第3期29-31,共3页
Coal Technology
基金
国家自然科学基金资助项目(51564038)
内蒙古自治区自然科学基金项目(2015MS0548)
内蒙古科技大学优秀青年基金(2016YQL04)
关键词
复合岩层顶板
弯曲挠度
离层
联合支护
composite roof
bending deflection
abscission layer
combined support
