爆炸引起饱和砂地表沉降的试验研究

通过观察，分析模型试验的现象和结果，讨论了爆炸加密饱和砂的机理，研究了药量与地表下沉量的规律，指出在爆炸加密砂基的问题中比药量不是主要的物理参数。总结出了地表下沉量及爆炸作用范围的计算公式。研究结果表明，爆炸振动引起砂体的破坏与再排列是砂基密实的主要原因。

A laboratory study on surface settlement of saturated sand caused by blasting

The mechanism of blast densfficalion of saturated sand has been discussed by observing and analyzing the phenomena and result of model experiments. It is pointed out that specilic charge's weight is not the main physical parameter in blasting densification of saturated sand, and an empirical formula is giten between surface setilement and blast effective range. The result shows that disruption and rearrngement of sand caused by blasting vibration are the major reason for sand densification.