Abstract：One of the main geologic disasters，the avalanche of perilous rock has important influence on the loss of lives and economic values. The indirect effects of water in fissures on the dynamic stability are not taken into account in Chinese specifications. Based on the assumptions of solid and fluid mechanics，the coefficient of reflection and transmission of the incident P waves at the interface of solid-liquid was deduced and verified in terms of the energy conservation，and then the hydrodynamic pressure acted on the perilous rock was calculated. The influence of the elastic modulus，density and Poisson?s ratio on the dynamic stability coefficient was studied qualitatively according to the expression of the transmission coefficient. The proposed method has been extensively applied to analyze the stability of unstable toppling rocks at Wanzhou district in Chongqing. The influence of the rainfall intensity and ground motion intensity on the stability of perilous toppling rock was discussed. The dynamic stability coefficient was reduced considering the hydrodynamic pressure in fissures. The reduction was more obvious in the case of rainstorm. It was concluded that the hydrodynamic pressure should be taken into account for the stability analysis of unstable rock in complicated surrounding conditions.
卢国帅. 地震滑坡涌浪下的混凝土重力坝破坏研究[硕士学位论文][D]. 大连：大连理工大学，2014.(LU Guoshuai. Study on damage of concrete gravity dam subjected to combined action of earthquake and slide surge[M. S. Thesis][D]. Dalian：Dalian University of Technology，2014.(in Chinese))
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2016, Vol. 35 
