New Technology of Efficient Blasting Rock for Large Section Rock Roadway Drivage in Deep Shaft with Complicated Conditions
Based on the different failure mechanism for shallow and deep rock mass, combined with the test result of ground stress and difficulties of blasting rock in Xinwen mining area, used mines rock mass mechanics and modern blasting theory and actively carried out technical reform, the new forming control technology of directional fracture blasting and control technology of multi-directional fusion blasting and efficient blasting technology of compound cut had been adopted, which produced a set of new efficient blasting rock technology for large section rock roadway drivage in deep shaft with complicated conditions. The engineering practice application results showed that the new efficient blasting rock technology could decrease the numbers of shot holes and explosive material consumption, enhance drivage efficiency and circulation footage, ameliorate integral forming quality of roadway and realize maximum month drilling footage at 146 m, the research achievements can provide reference for deep roadway drivage construction in other mining areas with similar conditions.
W. Zhang et al., "New Technology of Efficient Blasting Rock for Large Section Rock Roadway Drivage in Deep Shaft with Complicated Conditions", Applied Mechanics and Materials, Vols. 94-96, pp. 1766-1770, 2011