井巷掘进单位炸药消耗量近似计算

The approximation of unit explosiveconsumption for heading advance

掘进井巷炸药消耗量，一般通过查《矿山井巷工程预算定额》表求出，当手中没有资料时，就不能求出单位炸药消耗量，从而影响施工进度。现通过实践，推导出单位炸药消耗量的近似计算公式，与查表求出的数值基本吻合，从而更具有实用性。

Generally the explosive consumption is determined by looking out the table Mine Workings Budget Quota.Here is another approximation formula come from practice to determine the explosive consumption.It is more practical and could be calculated precisely without the table.