饱和软基爆炸排水机理的初步研究

本文在现场实验研究的基础上，提出了饱和两相介质在爆炸动载下排水固结机理的一维简化模型。数值计算结果表明在强动载作用下，土层中两相介质由于运动惯性不同，两者会出现分离运动，土体的排水速度与两相介质的运动有关。动载作用后两相介质仍具有较大的惯性，继续排水，这与静载下是不同的。土中孔隙压力的变化与两相介质运动有关，计算值与实测值在量级上有可比性。

RESARCH OF DYNAMIC DRAINING IN SATURATED SOFT SOIL BY BLASTING

In this paper the mechanism of drainage of saturated soil by blasting has been elemcntally.Based on analyzing the experiment results,a one dimension computing model to simulate the movement of water and grain in saturated soft soil under vibration has been presented.Through numeral simulation,it is understood that the movement of water and grain cause draining water from soil or water into soil.The pore water pressure is changed at the same time.The moveing inertia of two phase flow can last a long time after loading which is not same as that under static load.