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Abstract There are some controversies on the selection of stability calculation methods when preparing for the new specification of waste dump. We evaluate the accuracy and applicability of 7 limit equilibrium methods by using the difference percentage and standard deviation of safety factors in waste dump slope stability analysis. Combined with previous research，the application of limit equilibrium method in waste dump slope analysis is described. Ordinary method has a poor accuracy. The accuracy is larger than 30% and the standard deviation is large when dealing with ground water problem. Its calculation result can be used as a lower limit. Bishop method has an accuracy of 3.7% and good standard deviation，although only satisfying moment equilibrium. For the simple algorithm，it is recommended as a basic method. The correct values can be obtained from methods satisfying force and moment equilibrium，which applies to a variety of conditions.
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Received: 31 May 2011
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2011, Vol. 30 
