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| REALIZATION OF AUTOMATED SEARCHING BY GIS FOR MOST DANGEROUS SLIP SURFACE OF RESERVOIR BANK SLOPE
BASED ON SWEDISH SLICE METHOD |
| WANG Xiaodong1，2，3，DAI Fuchu1，HUANG Zhiquan3 |
| (1. Institute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029，China；2. University of Chinese Academy of Sciences，Beijing 100049，China；3. Institute of Resources and Environment，North China University of Water Resources and Electric Power，Zhengzhou，Henan 450011，China) |
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Abstract In the stability analysis of cohesive soil slope，the procedures based on Swedish slice method are usually defected by low automation and poor visualization. Because part of reservoir bank slope is submerged in the water，failure is more likely to occur. Based on the high-resolution digital elevation model(DEM)，applied geographic information system(GIS) component development technology，the paper suggests a new method to evaluate the stability of reservoir bank slope through computing the minimum safety factor and drawing the most dangerous slip surface. It has three advantages compared to the traditional method：(1) The profile can be extracted by drawing a line section on the DEM，also the information of multi-layers can be drawn with high degree of automation；(2) Slice parameters can be set in different values，which is beneficial to compare the test result；(3) The process and result of stability analysis can be expressed visually，hence the errors can be easily found.
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2014, Vol. 33 
