损伤岩石周边控制爆破分析

应用损伤力学的理论与方法，对崩落眼爆破经起光爆层岩石损伤因子与光面爆破参数的关系进行了分析，导出了相应在的光爆参数计算式，并与不考虑岩石损伤的光面爆破参数进行了对比，指出了目前低强度岩石中光爆效果往往较差，原因是没有考虑损伤因子对光面爆破参数的影响，造成炮孔装药过量所致，由此认为研究崩落眼爆破对光爆层岩石的损伤规律及损伤岩石的光面爆破参数计算方法，是未来深入研究岩石学面爆破理论与技术的方向。

Analyses of Controlled Perimeter Blasting in Damaged Rock

The relation between the factor of rock damage induced by production blasting and the parameters of smooth blasting was analyzed by means of the principle and method of damage mechanics. The formulae of determining parameters of smooth blasting were deduced, and the comparison was made between the parameters of smooth blasting with and without taking rock damage into account. Based on the analyses and comparison, the conclusions are reached that the usual bad result of smooth blasting in weak rock is caused by over charge for perimeter holes due to without considering the effect of rock damage on the parameters of smooth blasting. It is expected that the law of rock damage by production blasting and the method of calculating the parameters of smooth blasting in damaged rock will be the research direction and contents of future smooth blasting theory and technology in rock, especially in weak rock.