Discussion on Comprehensive Application of Controlled Blast, Soundless Breaking and Passive Protection Network in Dangerous Rock Elimination

Abstract:

As a main geological hazard, dangerous rock is multiple and frequent phenomenon in the Three Gorges reservoir area, which is divided into falling, overthrowing and sliding unstable. The comprehensive treatment of dangerous rock includes removal, supporting, anchoring, intercepting, sealing, grouting, seepage and protection network. Controlled blast includes cavern controlled blast, deep hole controlled blast, smooth blast, pre-splitting blast, short hole circulation controlled blast, and soundless breaking and protection network, all suitable to dangerous rock elimination. According to the types of dangerous rock, different controlled blast and comprehensive application measures were adopted to protect patent rock and stabilize the rocks for emergent danger elimination.