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针对传统抽水试验和Lugeon压水试验的不足,在同一钻孔内分别进行了分段压水试验和完整井抽水试验,并根据两种试验得到了试验钻孔处渗透系数剖面分布,分析了采用非稳流压力法测量岩体渗透系数的可行性和准确性。结果表明,压水试验与抽水试验的渗透系数并无显著差异,尤其非稳定流压水试验所需的试验时间更短,其所要求的试验条件易于获得,且准确性和可操作性更优。
According to the shortages of traditional pumping test and Lugeon pressure test, the sub-pressure test and the full-well pumping test were carried out respectively in the same borehole. According to the two tests, the distribution of permeability coefficient at the test borehole was obtained. Feasibility and accuracy of measuring rock mass permeability coefficient with unsteady flow pressure method. The results show that there is no significant difference between the permeability coefficient of water pressure test and that of water pumping test. In particular, the test time required for unsteady flow pressure water testing is shorter, the required test conditions are easy to obtain, and the accuracy and operability are better .