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基于振荡式微水试验的原理和岩体渗透系数张量的基本表达式,提出单孔分段振荡式微水试验。研发一套由多功能探头、密封阀、操作屏和气压泵等组成的测试设备,在技术上实现了单孔内围岩成像、量测裂隙产状、探测水压和水温变化,并将信息实时传输到上位机数据采集系统。通过采集的试验数据信息和围岩裂隙信息编制参数计算软件,实现了单孔试验确定裂隙渗透系数、岩体渗透系数张量和裂隙贮水率的技术和方法。以实例形式介绍了单孔微水振荡试验现场确定裂隙导水系数、岩体渗透系数张量的具体步骤和方法。
Based on the principle of oscillatory micro-water test and the basic expression of rock mass permeability coefficient tensor, a single-hole sub-oscillatory micro-water test is proposed. Developed a multi-functional probe, the sealing valve, the operating screen and the pressure pump and other components of the test equipment, technology to achieve a single hole in the surrounding rock imaging to measure the occurrence of cracks, water pressure and water temperature changes, and information Real-time transmission to the host computer data acquisition system. Based on the collected experimental data and the information of surrounding rock fracture, parameter calculation software was developed to realize the techniques and methods for determining the fracture permeability coefficient, the permeability coefficient tensor of rock mass and the water storage rate of fractures. The specific steps and methods for determining the coefficient of hydraulic conductivity and the permeability coefficient of rock mass in the single hole micro - water oscillation test are introduced by way of example.