三峡库区滑坡稳定分析中几个问题的研究

自从三峡库区地质灾害二期防治工程进行以来,我们针对滑坡勘查、设计中的一些实际问题开展了研究。主要是关于滑坡滑面的寻找和分析;库区碎石土抗剪强度参数调研和室内中剪试验研究;各种条分法的计算精度分析;库水位变动情况下浸润线的确定及渗流作用下边(滑)坡的稳定分析方法。上述部分研究成果已经纳入某些行业规范和地区规范。

Study on Some Engineering Problems of Slope Stability Analysis in Three Georges Reservoir Zone

With the second phase landslide-hazards mitigating engineering in Three Georges Reservoir Zone, we have studied to some practical problems about the landslide investigation & design. The performances are mainly focused on the following: (1)landslide sliding surface Searching and analysis; (2)the gravel-soil shear strength in Three Georges Reservoir Zone; (3) Computation precision study on limit equilibrium slices method of slope stability analysis; (4) The practical method for determining the phreatic line of slope during reservoir drawdown and the formula of slice method of slope stability analysis expressed by seepage force were proposed. Some conclusions have been adopted by some specification.