设垃圾坝填埋场平移破坏可靠度分析

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Abstract The stability of the landfill with an engineered berm against translational failure is studied by considering the randomness of the physical and mechanical parameters of the solid waste. Under the conditions of the trapezoidal three wedge method and reliability analysis method being used to the landfill with an engineered berm，the reliability index is calculated by the first order second moment method，considering the unit weight，internal friction angle，and cohesion of solid waste as random variables subjected to independent normal distribution. The results show that the requirement of safety factor with different failure modes is not the same so as to make the reliability index get to 3.0. Also，combining the safety factor with the reliability index can better assess the slope stability of the landfill with an engineered berm.

Key words： soil mechanics reliability index landfill translational failure engineered berm first order second moment method

Received: 31 May 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/Isl/2713

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