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以某隧道工程压水试验为例,利用钻孔压水试验P~Q曲线对岩体裂隙特性进行定性分析。选取该试验孔三段压水试验成果,对岩体裂隙的发育程度、张开度、填充情况及受压情况下裂隙变化状态,进行综合分析与研究,并将分析结果与钻探取芯、波速测试成果进行对比和相互验证。
Taking a water pressure test of a tunnel project as an example, the fracture characteristics of the rock mass are qualitatively analyzed by using the P ~ Q curve of water pressure test in the borehole. The test results of the three-stage water pressure test of the test hole are selected to make a comprehensive analysis and research on the development degree, opening degree and filling status of the rock mass fissure and the change status of the fissure under the compression condition. The results of the analysis are compared with those of the drilling coring, wave velocity test Compare and verify each other.