无底柱分段崩落法中深孔爆破参数试验

Serial Blasting Crate Tests Confirm Medium-length Hole Blasting Parameter of Non-pillar Sublevel Caving Method

在调查程潮铁矿东区的工程地质条件和现有采矿结构参数的基础上,根据利文斯顿爆破能量平衡准则,应用现场系列爆破漏斗试验方法确定了程潮铁矿东区大结构参数条件下无底柱分段崩落法合理的中深孔爆破参数;并根据相关公式应用VB语言开发了计算爆破漏斗体积的可视化程序;试验结果表明1.4—1.7 m的炮孔排距、2.6—3.0 m的孔间距为程潮铁矿合理的中深孔爆破参数。

On the base of researching the engineering geologic condition and existing mining structure parameter and according to Livingston＇s blasting energy balance law, the thesis used the serial blasting crate tests to confirm the reasonable medium-length hole blasting parameter about non-pillar sublevel caving method under the large structure conditions in the east area of Chengchao Iron Mine, and a visible program which was used to calculate the volume of the filler in VB （ visual basic） language was empoldered,the test result shows the 1.4—1.7m burden and the 2.6—3.0 m spacing are the reasonable medium-length hole blasting parameter.