【摘要】 对铁炉港大型采石场深孔台阶爆破穿爆参数第一阶段试验的84次爆破作业进行初步统计分析,得出爆堆石料、弃渣、剥采比随爆堆装运过程的关系曲线,初步确定可行的钻爆参数及装药结构,同时强调要降低Ⅲ类岩爆破作业后的剥采比非常困难。更多还原

【Abstract】 Based on statistic and analysis of borehole explosive parameters in 84 times explosion implementation in phase Ⅰ of Tielu Harbour large-scale tone quarry, the relationship among the explosive pile stones, abandoned residue and overburden ratio accompanied the embarkation process is obtained the workable borehole explosion quantity and the structure of filling percussion powder are determined, simultaneosly it is very hard to decrease the overhurden ratio of Ⅲ sort rock after explosion.更多还原