Research On The Error-mechanism And Error-Range Of The Rigid Limited Equilibrium Method In The Stability Of Rocks & Soil Slope

The stability of slopes is of great significance in highway, railway, hydro-electrical and mining engineering. As the direct method in Chinese criterions, the Rigid Limited Equilibrium Method has been widely used by engineers. With researching deeply, some geotechnical researcher had been understood that the RLEM which is mobility solving method is inaccurate. Many scholars have done much works in researching on the error-range using the parallel analysis between RLEM and others methods in some huge projects. However, it is not reported about the systemic and numerical analysis of this error range and mechanics mechanism.In this paper, based on the analysis of the RLEM of theory foundation, computing method, preference, applicability, etc, we anatomized the RLEM of three self-deficiencies and six scarcities. Moreover, we adopted the parallel ways of contrasting the RLEM with the FEM and applied it to analyzing the impact of slide block of elasticity and plasticity, slip surface of coefficient and slip bed of elasticity, plasticity upon the stability of slope and in the plain linearity slope, the plainrefracted line slope and the plain arc slope. In addition, we discussed the warp of between the LEM of (Sarma, Janbu, Order, Bishop, Morgenstera-Price, etc) and the FEM of result and the distributing of positive stress and shear stress on the slip surface. Accordingly we introduced the above research to study the stability of slope in the constructing.At the last of this paper, we summarized the deficiencies of simulating pre-stressing anchor and proposed the new and accurate simulating method which is given up the traditional tow points applied forces and applied a point reverse forces, made beam element simulate the anchor bolt, made interface element simulate concrete. In addition, we proposed two simulating methods applied on flock anchors which improved on considering the contribution of anchors' tangent-orientation stiff. One is post-stressing offset method; the other is anchor element method.