基于压水试验的杨村煤矿底板断层带渗流性质研究

摘要

In order to study the seepage characteristics of the floor fault zone in Yangcun Mine, water injection test method was used for the measurement of Fault 5 and a number of measured data were obtained. Analysis results showed that the permeability of this fault was bad and its permeation resistance was relatively strong in the original state. Four water injection tests on this fault were carried out, and from the comparison of the permeability changing curves in four water injection tests it was found out that the repeated water injection can lead failure of the fault zone, which in turn improved its permeability. The relation between test pressure and flow rate(p—Q) of F5 fault was a dilation or erosion type, the fissures in this fault zone developed and many filling materials existed in it, so it has stronger resistance to seepage.%为研究杨村煤矿底板断层带的渗流性质，采用现场压水试验方法对底板F5断层进行了测试并获取了大量的实测数据，分析结果表明：该断层在原始状态下渗流能力较差，阻渗性较强。对该断层进行了4次压水试验，对比4次压水试验的渗透系数变化曲线可知，重复压水可导致断层带明显渗透破坏，由此造成其导渗性能的进一步增强；F5断层带两段压渗试验压力和流量关系( p—Q )为扩张或冲蚀型，该断层带裂隙发育，裂隙中间有较多充填物，阻渗能力较好。