爆破漏斗试验确定扇形深孔爆破参数的应用研究

摘要

For the study of the blasting effect of deep-hole sector blasting in soft rock, the method on blasting crater tests for determining deep-hole sector blasting parameters is introduced in particular by the example of a vanadium mine. The minimum resistance line (w)=row spacing (b)=1.8m; the hole-bottom distance (a)= 2.1m; the explosive consumption (q)=1.0kg/m3. The site blasting tests indicate that, the blasting effect is good, and the boulder yield is low, blasting only a slight damage occured to the surrounding rock mass. Therefore, the methods to determine and optimize the blasting parameters has a very good application value.%为研究扇形深孔爆破在软岩中爆破效果，以某钒矿水平深孔阶段矿房法为例，通过理论分析及现场爆破漏斗实验方法确定扇形深孔爆破参数，最小抵抗线w=排距b=1.8m；孔底距a=2.1m；炸药单耗q=1.0kg/m3。经现场爆破试验表明，爆后效果良好，大块率低，对围岩破坏小。因此，该方法对矿山确定及优化爆破参数具有很好的应用价值。