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m值不同,爆破效益明显不同其关系可用下面图形说明,即随着m值的增加,爆破效益S逐渐提高,直至最高(最佳如图1)。这 点以我们对1978年至1981年四年爆破参数统计分析中(见表1)看的比较清楚;从1984年爆破效果分析中也充分说明了这个问题(见表2)。1984年主要从加大m值入手,确定了比较合理的爆破参数(见表3),取得了较好的效果。与1983年相比,矿岩结存量由1983年的一个月增加为二个半月,大块率下降了13T/KT,根底率出现了历史最好水平,在0.83％以下,二次爆破工作量降低下25％,
The different values of m and the obvious difference of blasting effectiveness can be illustrated by the following graph, that is, as the value of m increases, the blasting benefit S gradually increases up to the maximum (best shown in Figure 1). This point is clear from the statistical analysis of the blasting parameters (see Table 1) of the four years from 1978 to 1981; this problem is fully illustrated in the analysis of the blasting effect in 1984 (see Table 2). In 1984, mainly from increasing the m value to determine the more reasonable blasting parameters (see Table 3), and achieved good results. Compared with 1983, the ore rock stock balance increased from one month in 1983 to two and a half months, the bulk rate dropped by 13T / KT, the base rate showed the best in history, below 0.83%, and the secondary blasting workload Lower by 25%