岩质边坡动力稳定性分析的几个要点

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Abstract Emphasis is put on discussions of three basic problems in dynamic stability analysis of rock slope：(1) mechanical characteristics of fractured rock masses under dynamic loads；(2) dynamic response and safety assessment of slope；(3) safety evaluation of slope reinforcement measures(mainly anchor cables) under dynamic loads. Based on long-term engineering experiences and researches，assessment methods for dynamic stability of slopes are discussed，especially for high rock slopes under seismic and blasting loads. The strength characteristics and research emphasis for rock masses under dynamic loads are summarized and put forward. The dynamic responses of rock slope are analyzed systematically. It is pointed out that the dynamic stability of rock slopes should be assessed from three aspects，i.e. the trend of dynamic factor of safety，the dynamic fracturing and sliding of potential sliding surface，and the particle vibration velocity of key points in slopes. Finally，the security assessment of prestressed anchor cables under dynamic loads is proposed.

Key words： slope engineering rock slope dynamic loads stability prestressed anchor cable

Received: 30 June 2011

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http://www.rockmech.org/EN/Y2012/V31/I5/873

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