Stability And Excavate Bearing Process Analysis Of Artificial High Slopes With Goafs

This thesis is one of the original work belonged to one special project organized by the Central South Design Academe, National Electricity Company, which is called"the stability and the excavating timbering of the artificial high slope on the left side of coal seam goaf of the Xiangjiaba Hydropower Plant".This thesis introduces the history and the existing status of the theories and methods about the slope stability analysis. Due to the complex of rocks'instability and their coast mechanisms of distortion, the measure and ways to promote the reinforcement of rocks are different to match the diverse mechanisms. Their stability evaluation is an extremely difficult problem, and the different kinds of slopes should adopt the different analyzing ways that fit for the real situations. For the slope stability problems, many evaluating theories and numerical analyzing techniques have been brought forward in the recent years, which could be categorized into several species including the rigid-body limited equilibrium method, the theory of deformation-body, theory of deformation-seep coupling and other new theories and ways about slope stability analysis. Although various mechanics models have put forward many numerical techniques, the widely used one that is commonly admitted by engineers is the finite element method. Combined the joint elements, on some extent this method could overcome structural surface obstacles described by the mechanics of continuous media such as the joint of canny existing in the inner of rocks. Until now, the finite element method has been widely employed because of the mature of the large-scale construction computing software.The excavation on the left side of Xiangjiaba Hydropower Plant would form the large-scale artificial slope, which refers to the main project near the source of the river and the project of intake sea-route near the mouth of the river, and its height would reach 150 meters. According to the original work on the stability problem of the left side of the river and the elementary analysis on the model of geological mechanism, two section planes of Rock Group T33 and J have been chosen to carry out the stability evaluation (the slope stability analysis utilized the SARMA program), both of which have the different rock characters. When loads are calculated, the internal force, underground water, earthquake force, their combination and measure to deal with anchorage force infliction are also considered. It is predicted that the differential...