石棺材崩坡积体下伏岩体力学参数原位试验研究

In-situ Testing of Rock Mass Parameters at Shiguancai Talus Slope

构皮滩水电站石棺材崩坡堆积体厚度大,所处地质条件复杂;该崩坡堆积体的治理效果将直接影响通航建筑物的施工和运行安全。拟采用抗滑桩对该边坡加固处理,因此需了解岩体的变形模量及地基弹性系数等力学参数指标。现场原位试验能简便直观的模拟抗滑桩持力层基岩的受力状态和变形特征,是最直接有效的方法。通过对试验点开展的原位试验,为工程设计提供依据。

The geological conditions at Shiguancai talus slope for Goupitan Hydropower Station Project are complicated in nature.The results of the stability rehabilitation will directly affect the buildings and other structures for the safe operation of the power station as well as the navigational safety.The landslide caisson method was to be implemented as the reinforcement methods.Therefore,the rock mass deformation modulus and the elastic spring coefficient are needed for the caisson design.The in-situ full scale landslide resistant caisson tests are the most reliable way to obtain the design parameters.This paper presents the full scale load test results.