论文部分内容阅读
光面爆破和预裂爆破技术在地下工程中已经得到应用,获得了较好的技术经济效果,并在实践中总结出衡量爆破效果的质量检验标准,如超(欠)挖值、炮眼痕迹保存率、两炮衔接台阶的最大尺寸和对围岩破坏深度等。其中有些比较容易测量和分析,而对围岩破坏深度的量测是属于工程围岩内部的质量检验,以往对此项的评定处于定性的分析。为了比较科学的检验爆破对围岩稳定性的影响,冶金部马鞍山矿山研究院与江苏省冶山铁矿合作,对该矿北矿区
Smooth blasting and pre-cracking blasting technology has been applied in underground engineering, get better technical and economic results, and in practice summed up to measure the blasting quality inspection standards, such as ultra (under) the value of digging, preservation of blast marks Rate, the maximum size of the two gun convergence step and the depth of destruction of the surrounding rock. Some of them are relatively easy to measure and analyze, while the measurement of the surrounding rock failure depth belongs to the quality inspection of the surrounding rock of the project. In the past, the evaluation of this item was in a qualitative analysis. In order to compare the impact of scientific test blasting on the stability of surrounding rock, the Ma’anshan Mining Research Institute of the Ministry of Metallurgy cooperated with the Ye Shan Iron Mine in Jiangsu Province,