ZHAO Xiaoping, LI Yusheng, CHEN Xiaobing, LIN Fucai. 2008: NUMERICAL SIMULATION FOR THE PROBLEM OF PROJECT SLOPE TOPPLING DEFORMATION ON THE RIGHT OF A HYDROPOWER STATION DAM ABUTMENT IN LAN-CANG RIVER. JOURNAL OF ENGINEERING GEOLOGY, 16(3): 298-303.
    Citation: ZHAO Xiaoping, LI Yusheng, CHEN Xiaobing, LIN Fucai. 2008: NUMERICAL SIMULATION FOR THE PROBLEM OF PROJECT SLOPE TOPPLING DEFORMATION ON THE RIGHT OF A HYDROPOWER STATION DAM ABUTMENT IN LAN-CANG RIVER. JOURNAL OF ENGINEERING GEOLOGY, 16(3): 298-303.

    NUMERICAL SIMULATION FOR THE PROBLEM OF PROJECT SLOPE TOPPLING DEFORMATION ON THE RIGHT OF A HYDROPOWER STATION DAM ABUTMENT IN LAN-CANG RIVER

    • A hydroelectric power station at Lan-Cang river locates the east brim zone of Qing-Zhang tableland. This site is at alpine canyon, has high tectonic stress circumstance and rock mass unload cranny development, and toppling deformation. They become the most important facts which effect the stability of project slope as rock mass quality, rupture action and seismicty. Deformation discrete element method can be used. This paper develops two discrete element models. One model is a theoretical excavation model and the other is a actual slope excavation model. The results of the theoretical model show that the destroying mechanism is the cutting deformation in ebb toppling deformation, fracturing deformation, strain-shear rupture in the lay of strong toppling rock mass and break rupture in strong rupture rock mass and the deformation range, excavation face, reinforce method and so on. Comparing the results of the project slope excavation model with the results of the site geological investigation show that calculated results and field data are basically similar.
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