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中文摘要：
边坡滑面强度参数的确定是岩土工程领域的难题之一。结合澜沧江古水水电站争岗滑坡堆积体工程地质条件,依据堆积体稳定性受暴雨工况控制的实际情况,对三维滑面及边界条件采用栅格控制和克里格插值法构建了争岗滑坡体的三维滑块模型,并对堆积体的稳定性现状进行合理的假设,利用三维极限平衡方法反算出底滑面综合抗剪强度参数。研究结果表明：该参数可反映滑坡体的总体稳定性及失稳破坏模式,与现场勘察的结果相吻合,证明了反算方法的有效性,在此基础上提出了滑坡堆积体治理的基本思路。相应参数反算方法可为相似工程中参数的确定提供有益参考。
英文摘要：
The determination of strength parameters of slope sliding surface is one of the difficult problems in geotechnical engineering. According to engineering geological condition of Zhenggang landslide deposit body in Gushui Hydropower Station and the fact of slope stability controlled by rainfall conditions,grid control technology and Kriging interpolation method are used to establish 3D model of sliding block models. Then,a reasonable assumption is proposed according to the stability characteristic of landslide deposit body,shear strength parameters are inversely calculated with three-dimensional limit equilibrium methods. It shows that these parameters can reflect the overall stability and landslide failure mode,which are well coincide with field exploration,the effectiveness of back analysis method is also proved. Based on the analysis,the proper management ideas for treatment of landslide deposit body are presented. The inverse calculation method for shear strength parameters can provide useful references to similar projects.
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