SELECTION OF LIMIT EQUILIBRIUM METHODS IN THE DESIGN SPECIFITION FOR WASTE DUMP OF METAL MINE
LI Xiaochun1,REN Wei1,WANG Shaoquan2,WANG Haibin1,CUI Yinxiang1
(1. State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei 430071,China;2. Northern Engineering and Technology Corporation,Metallurgical Corporation of China,Anshan,Liaoning 114009,China)
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.
李小春1,任 伟1,王少泉2,汪海滨1,崔银祥1. 论金属矿山排土场设计规范中边坡极限平衡计算方法的选取[J]. 岩石力学与工程学报, 2011, 30(S2): 4136-4142.
LI Xiaochun1,REN Wei1,WANG Shaoquan2,WANG Haibin1,CUI Yinxiang1. SELECTION OF LIMIT EQUILIBRIUM METHODS IN THE DESIGN SPECIFITION FOR WASTE DUMP OF METAL MINE. , 2011, 30(S2): 4136-4142.
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