安家岭矿东帮靠界区域爆破方案优化

Optimization of blasting schemes in the boundary area of east slope of Anjialing Mine

为了减少露天开采活动对周边建筑物的损害,实现煤炭资源的安全、绿色、高效开采;提出了将靠界爆破区域划分为5个区域,对各区域爆破参数进行优化设计,根据制定的优化爆破方案,分别计算不同距离的最大质点振速,分析爆破对周边建筑物的影响。结果表明:根据制定的分区优化爆破方案,计算得出的不同距离的最大质点振速均能满足《爆破安全规程》关于一般民用建筑的振动要求,最终可将端帮推进至距离矿界50 m,大大提高了矿山回采率。

In order to reduce the damage of open-pit mining activities to surrounding buildings and realize safe,green and efficient mining of coal resources,the article proposes to divide the blasting area near the boundary into five areas,optimizes the blasting parameters of each area,calculates the maximum particle vibration velocity at different distances according to the optimized blasting scheme,and analyzes the impact of blasting on surrounding buildings.The results show that according to the formulated divisional optimization blasting scheme,the calculated and obtained maximum particle vibration velocities at different distances can meet the vibration requirements of general civil buildings in Blasting Safety Regulations,and finally the end slope can be pushed to a position 50 m away from the mine boundary,which can greatly improve the mining recovery rate.