高速远程滑坡裹气流态化动力学特性实验研究

doi:10.13722/j.cnki.jrme.2015.0287

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Abstract In order to reveal the dynamical shearing behaviors of rock avalanche debris under the effect of entrapped gas，an annular shear shell was designed based on the flow characteristics of rock avalanche debris under the effect of entrapped gas. A series of ring shear tests were conducted to record the dynamical shearing values of rock avalanche debris as the variation of gas entrapment. During the motion of debris，the entrapment of gas reduced the dynamical shearing resistance between debris and top disk obviously. The shearing resistance between the debris and top disk fluctuated with time. With the increase of shearing time，the shearing resistance between the debris and top disk increased slightly. And the larger the shearing rate was，the more obvious this trend.

Key words： slope engineering rock avalanches ring shear test quartz grain gas entrapment dynamical shearing resistance

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.0287 OR http://www.rockmech.org/EN/Y2016/V35/I2/268

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