摘要
为有效解决2-101工作面运输巷在掘进期间巷道围岩变形量大的问题,通过具体分析锚杆(索)的预应力设计原则,结合工作面的具体地质条件后对巷道合理的支护参数进行数值模拟分析,优化支护方案并进行矿压监测。结果表明,优化支护方案实施后,顶底板的最大移近量为40mm,两帮最大移近量为38mm,保障了巷道围岩的稳定。
In order to effectively solve the problem of large deformation of the surrounding rock of the roadway during the excavation of the 2-101 working face, the paper numerically simulated and analysed reasonable support parameters of roadway based on the concrete analysis of prestressing design principle of the anchor and the specific geological conditions of the working face. Then it optimized the support scheme based on numerical simulation results and conducted mine pressure monitoring according to the numerical simulation results, which ensures the stability of the surrounding rock of the roadway.
作者
席泽
Xi Ze(Fengyu Coal Industry Co., Ltd., Huozhou Coal and Electricity Group, Huozhou, Shanxi 031400)
出处
《江西煤炭科技》
2019年第3期48-50,共3页
Jiangxi Coal Science & Technology
关键词
大采高工作面
运输巷
围岩变形
预应力锚杆
large mining height working face
haulage drifts
surrounding rock deformation
prestressed anchor
