爆炸挤压粘土密度变化过程的数值模拟

Numerical simulation on variation of density of the soil compacted by explosion

一种新型爆破工艺 ,需要采用不可压缩介质作垫层 ,利用炸药的爆炸作用对粘土进行挤压 ,形成地下空间。为了分析爆炸挤压后土体参数的变化规律 ,建立了爆炸挤压垫层和粘土的力学模型及数值方法。通过计算 ,得到爆炸作用下粘土密度变化的分布和爆炸空腔的发展过程。

There is a new blasting technology which utilizes the explosion effect of the explosive to compact the soil to form the underground space with the non compacted material as the cushion. To analyze the variation of the parameters of the soil, the mechanical model and numerical method of the explosion compacting the cushion and soil are established. The profile of the density variation of the soil under explosion effect and the developing process of the explosion cavity are acquired by simulation.