本文着重介绍了目前日本采用控制爆破的一些情况。 全文计六部分:一、基本原理;二、TN炸药的特点;三、设计方法;四、安全效果;五、经济效果;六、施工实例。 上期已刊出前四部分,本期继续刊出第五、六部分,供有关同志参考。 This article highlights some of the current situations in Japan where controlled blasting is used. The full text consists of six parts: First, the basic principles; Second, TN explosives characteristics; Third, the design method; Fourth, the safety effect; Fifth, the economic effect; Six, construction examples. The first four issues have been published in the last issue of the current issue of the fifth and sixth sections for reference by the relevant comrades.