The calculated results indicate that the initial settlement of soil after blasting is small, which is approximately accordant to the experimental results.
计算结果表明,爆炸后初始时刻淤泥表面沉降量很小,这与实验研究结果基本吻合。
3
Because of the weak borehole sealing and inadequate use of the initial free face, the higher investment and unsatisfactory blasting effect still exist in the mine tunnel excavation blasting.