极软表土层支护技术研究

Support Technology Study of Extremely Soft Topsoil

通过对回风斜井的围岩性质及巷道破坏原因分析,结合数值模拟,提出了U型钢支架与短锚杆全长锚固巷道底角加锚索并喷射混凝土封闭围岩支护治理方案。经实验表明,上述方案的实施取得了良好的支护效果。

Through analyzing the rock properties of return slope of rock and the cause of roadway damage, combined with the numerical simulation, this paper proposed the support governance program of U-shaped steel bracket and short bolt anchoring, roadway corner plus anchor and shotcrete to close rock. The experiments show that the implementation of the program has achieved good supporting effect.