摘要
为保证1103运输顺槽沿空留巷期间巷道围岩的稳定,通过分析沿空留巷的结构特征,采用理论分析与数值模拟的方法确定沿空留巷与墙体的参数,结合1103运输顺槽的地质情况,对留巷期间的补强支护方案进行具体设计,并在留巷期间进行矿压观测。结果表明:留巷顶底板的最大移近量为449 mm,两帮的最大移近量为284 mm,保证了沿空留巷围岩的稳定。
In order to ensure the stability of the surrounding rock during the roadway along the 1103 transportation roadway,the structural characteristics of the roadway along the goaf were analyzed.The theoretical analysis and numerical simulation method were used to determine the parameters.The reinforcement support scheme during the roadway was specifically designed,and the mine pressure observation was carried out during the retained roadway.The results showeded that the maximum displacement of the top and bottom of the roadway was 449 mm,and the maximum displacement of the two sides 284 mm,which ensured the stability of the surrounding rock in the roadway.
作者
白志强
Bai Zhiqiang(Shanxi Lu'an Group Puxian Heilong Coal Industry Corporation Ltd.,Linfen 041200,China)
出处
《煤炭与化工》
CAS
2018年第12期29-32,共4页
Coal and Chemical Industry
关键词
沿空留巷
充填体
围岩控制
gob-side entry retaining
filling body
surrounding rock control
