板集矿井F34断层导水性及可灌性评价

Evaluation of Water Flowability and Groutability of F_(34) Fault in Banji Mine

断层的渗透性或导水能力对井下巷道的施工速度和施工安全性有显著的影响。在巷道穿越已知的断层之前应尽可能地了解断层的渗透性以及断层获得地下水的补给能力。通过采用抽水和压水试验相结合的方法,从定性和定量两方面,对F34断层的渗透性与导水性进行分析与评价,并通过采用岩石透水率指标,对断层带内岩体的可灌性进行评价。分析计算表明,该断层具备一定的渗透性与导水能力,需要对其进行灌浆处理。

The permeability or water flowability of a fault has significant influences on the construction speed and working security of underground roadways.Accordingly,it is necessary to find out the permeability of the fault and the replenishment ability of the fault obtaining underground water before the roadway is cut through the fault zone.The paper gives the qualitative and quantitative analysis and evaluation on the permeability and water flowability of F34 fault by both pumping test and water pressure test.It also gives the evaluation on the groutability of rock mass of F34 fault with the permeability rate of rock.The analyzed and calculated results showed that the fault has certain permeability and water flowability,so it requires to be treated by grouting.