【摘要】 为了避免858矿掘进爆破对相邻巷道的振动影响,对该矿巷道掘进爆破的地震波强度进行了监测。通过对监测数据进行萨道夫斯基公式回归,分析计算出适用于当地的K和a值;利用回归得到的萨道夫斯基公式进行计算,得到最大单段装药量与保护岩柱宽度的关系;根据858矿的安全生产设计要求,并考虑推进爆破对相邻巷道的影响,掘进爆破最大单段装药量为35.54kg。更多还原

【Abstract】 In order to avoid the vibration effect of driving blasting on the adjacent roadway in 858 mine, seismic intention of tunnel driving blasting in the mine was monitored.Based on monitoring data,the values of K andαsuitable for local were obtained by using Sadov’s formula to regress;Sadov’s formula from regression was be used in calculating,the relationship between the maximum single-stage charge quantity and the width of protective rock pillar was obtained;according to design requirements of safety production, and considering the effect of driving blasting on the adjacent roadway,the maximum single-stage charge quantity of driving blasting was 35.54kg.更多还原