摘要
针对邢东矿深部巷道变形量较大,常表现为较明显的非对称特征,提出了沿空掘巷非对称支护技术。在邢东矿11216工作面运料巷应用数值模拟软件建立计算模型,验证不同不同锚索布置方式、顶锚杆数量、帮锚杆数量、实体煤帮布置方式、煤柱帮锚索布置方式等不同支护方式的巷道围岩支护效果,从而找到最优支护方案。并依据相应的支护方案在11216工作面运料巷进行了工业性试验。结果表明:试验巷道内,在回采过程中顶板下沉量均能控制在安全范围内,同时两帮的变形量也得到了有效的控制。
Aiming at the large deformation of the deep roadway in Xingdong Mine,which often shows more obvious asymmetric characteristics,asymmetric support technology along the air excavation roadway is proposed.Numerical simulation software was used to establish a calculation model in the 11216 working face freight lane of Xingdong Mine to verify the support effect of different support methods,such as different anchor arrangement,top anchor quantity,gang anchor quantity,solid coal gang arrangement,and coal pillar gang anchor arrangement,so as to find the optimal support scheme.And according to the corresponding support program in the 11216 working face transporting material roadway for industrial test.The results show that in the test tunnel,the amount of roof subsidence can be controlled within the safe range during the mining process,and the deformation of the two gangs is also effectively controlled.
出处
《中国矿山工程》
2024年第3期31-37,共7页
China Mine Engineering
关键词
沿空掘巷
非对称支护
数值模拟
支护参数优化
along-air excavation
asymmetric support
numerical simulation
optimization of support parameters
