控制爆破技术在地质灾害治理中的应用

Application of Controlled Blasting Technology in Governacing Geological Hazards

在周边环境复杂的条件下,应用控制爆破技术对观音山2处危岩进行排险作业,及时对危岩体进行减载或削坡处理。为了保证山下建筑物和施工的安全,采用松动爆破技术,精心确定爆破设计参数,使用非电导爆管微差起爆网路,严格控制一次起爆装药量,最大程度地减少对危岩的振动和母岩的破坏,并有针对性地采用了开挖防护沟、铺垫缓冲层等多种安全防护措施,安全、高效地消除了这一地质灾害隐患。此工程经验可对类似地质灾害的治理超到一定的借鉴作用。

The technology of controlled blasting was used to relieve two dangerous and unstable rocks in the Guanyinshan under complex environment, and the dangerous rocks were dealed with load shedding or slope cutting timely. In order to ensure the safety of downhill building and construction, the loosing blast technology and precise blasting parameters and Nonel tube delay firing circuit were used together to strictly control the permitted charge amount per delay, to minimize the vibration and the damage of the mother rock. Through some security protection measures of damping ditch and buffer layer,it was safely and efficiently relived, which can provide some reference for similar geological disasters governance.