基于块系构造的大规模地下爆炸不可逆位移计算方法

Calculation method of irreversible displacement region radius based on block hierarchical structure under large-scale underground explosion

岩体是复杂的等级构造地质体,本文中假设岩体构造符合Sadovsky院士块系构造等级学说,即岩体中存在稳定的不变量λ和μΔ,从而采用简化的分析模型研究构成岩体的岩块在爆炸地冲击扰动作用下的平动和转动,指出Kocharyan激活块体尺度计算式中忽略的条件,重新推导给出了大规模地下爆炸诱发远区局部不可逆位移计算公式。

Rock mass is a geological body with a complex hierarchical structure.Based on Sadovsky's concept of block hierarchy,and considering that there are two stable invariants ofλandμ△existing in rock mass,a simplified analytical model is established to study the space-limited rotation and translation under the effect of blast shock waves.With the neglected conditions of Kocharyan's works in calculating scales of activated blocks,the calculation formula of irreversible deformation region radius under large-scale underground explosion is re-derived.