loosening blasting

• 松动爆破

loosening blasting的用法和样例：

例句

1. The design methods and measures of safety protection of weakly loose blasting are introduced with field cases.
   摘要通过工程实例，介绍了微弱松动爆破的设计方法及安全防护措施。
2. The in-seam distressing entry layout is combined with concussion blasting technique,so that the tailentry in soft rocks can be effectively maintained.
   首次提出了应用本煤层布置卸压巷并结合松动爆破技术解决沿空软岩巷道有效维护的难题。