耗散系统
分离式霍普金森压力棒
消散
岩土工程
巴(单位)
能量(信号处理)
地质学
机械
结构工程
材料科学
工程类
物理
复合材料
应变率
海洋学
热力学
量子力学
作者
Qingwen Li,Chun Lu,Zhili Sui,Liping Wang,Jianghui Dong
标识
DOI:10.1177/1687814019825906
摘要
As one of the dynamic disasters of deep mining, rockburst significantly affects the safety of underground environment especially at great depth. First, the elastic energy and dissipative energy are deduced to characterize rockburst process separately employing the theoretical analysis and test technique. Then, a series of split-Hopkinson pressure bar system tests are conducted. After calculation, the percentage of fractured dissipative energy occupied in total input dynamic energy is obtained. Subsequently, the dynamic mechanical parameters of rock specimens and dynamic impact factors are fitted. Finally, a three-dimensional model is developed using the mechanical property of the host rock, constitutive model, and in situ geostress. The contours of energy and the damage conditions of host rock are predicted, and the tendentiousness of rockburst is estimated.
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