挤压破碎带原位岩体高压渗透变形试验方法

High Pressure Seepage Deformation Test of Rock Mass with Crush-caused Fractured Zone

某大型水电工程重力坝坝基为发育规模较大的挤压破碎带,为准确了解挤压带的渗透变形特性,现场模拟电站建成后的水力条件,采用原位高压渗透变形试验,研究挤压破碎带岩体渗透变形破坏形式和程度,确定挤压带的渗透坡降(临界坡降、破坏坡降)及破坏类型。

There was a large developed scale of crush-caused fractured zone in the gravity dam foundation of hydropower station engineering. The actual hydraulic condition was simulated to study the failure model and level of rock mass with crush-caused fractured zone by the in situ high pressure seepage deformation test, in which the seepage gradient, including the critical gradient and the failure gradient, and the failure model were obtained.