冻土爆破的实践与认识

PRACTICES AND UNDERSTANDINGS ON BLASTING OF FROZEN GROUND

本文通过某冻土爆破实例 ,介绍对比了冻土不同成孔方法的优缺点 ,总结了不同冻深条件下爆破参数的确定和选取原则 ,特别对冻土中爆破地震的强烈反应作了调查和研究 ,并在改进爆破技术的基础上 ,使冻土爆破地震大大降低 。

Based on the practical example on blasting of certain frozen ground,the advantages and disadvantages of different methods for drilling the blast hole in frozen ground are introduced.The principles for determining and selecting the blasting parameters under different conditions of frozen depth are summarized.Especially,the intensive seismic response during the balsting fo forzen ground has been investigated and studied.Furthermore,on the basis of improving the blasting technique,the seismic vibration due to the blasting of frozen ground may be reduced greatly,and the efeective control of seismic vibration harms due to blasting may be obtained.