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《Chinese Journal of Underground Space and Engineering》 2013-03
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Application of Partition Grading Method to Fractured Rock at the Tibet Rumei Hydropower Station

Luo Shiwei1,Liu Jie2,Xiao Lei2,Hu Jing2,Tang Tiancai2(1.College of Hydraulic Environment Engineering,China Three Gorges University,Yichang,Hubei 443002,China; 2.Key Lab.of Geological Hazards on Three Gorges Reservoir of Ministry of Education,Yichang,Hubei 443002,China)  
On the basis of Rumei hydropower station in Tibet combined with the current research methods of rock parameters,this work makes numerical simulation and partition grading on the fractured rock mass in the underside dam site through the equivalent computing method of numerical simulation of the partition grading fractured rock mass according to the rock mass type,strength and weathering degree,development characteristics and geometric features of the fracture structure surfaces.After comparing these data with calculation results of the geological evaluation system GSI,it comes to a conclusion that the parameter results of fractured rocks from these two methods are basically the same.Although there are differences when analyzing from their own theoretical point of view,it is within the permission range,which shows that the method suggested in this paper is dependable.Additionally the partition grading method of fractured rock mass can simplify numerical model and effectively reduce the computational cost to improve the calculation accuracy and speed.
【Fund】: 国家自然科学基金项目(51009083);; 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室开放研究基金项目(IWHR-SKL-2012221);; 宜昌市科学技术研究与开发项目(A2012-302-03);; 湖北省自然科学基金计划项目(2011CDB182);; 三峡大学硕士论文培优基金(2012PY002 2012PY011)
【CateGory Index】: TV223.1
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