| Summary: | 碩士 === 國立成功大學 === 地球科學系 === 89 === This study intends to analyze the quantitative changes of the intrinsic factors for slope failure development, with an example before and after the 921 Earthquake. According to the results of rock mass classification, and patterns of fractures, this work concludes the effect of the relationship between earthquake and intrinsic factors for slope failure development.
Comparing the variation of rock quality classification data before and after the earthquake, the RQD values are generally decreased after earthquake. It shows that the earthquake shock wave will change the quality of rock mass; especially, the fractures. After earthquake, the number of fractures have been increased, which will cause the failure of slope. The variation of rock mass quality, lithological characteristics, and distance to epicenter are shown to be significant factors for slope failure to occur after the earthquake.
Along the geologically sensitive zone of the slope, earthquake has induced a great deal of slope failure. Among the slopes, the original rock fractures have been greatly affected by the shock wave of the earthquake. Trend and quantity of the intrinsic factors for slope failure have been increased.
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