基于钻孔电磁辐射法的爆破卸压效果检验方法

A study on testing the effect of blasting releasing pressure based on drilling electromagnetic radiation

分析了煤岩体电磁辐射信号与受载应力的关系,研究了工作面前方煤岩体电磁辐射分布规律,由此提出了爆破卸压效果检验的钻孔电磁辐射法;并通过河南神火集团梁北矿11061工作面薄煤区爆破卸压效果进行了现场验证。研究表明:工作面电磁辐射强度、脉冲与围岩应力状态具有良好的相关性;电磁辐射信号能有效地反映工作面前方煤体应力分布及转移情况;钻孔电磁辐射法能够检验爆破卸压效果,为爆破卸压效果检验提供了一种新的方法。

The relationship between electromagnetic radiation signals of coal and rock and the stress was analyzed, and the regularity of distribution of electromagnetic radiation signals of coal and rock located in the front of working face was discussed, the drilling electromagnetic radiation inspection methods for the effect of burst releasing pressure was proposed and validated by Liangbei Mine 11061 working face thin coal area blasting in Henan Shenhuo Group. Re search shows that the stress state of surrounding rock mass in the working face has good correlation with electromagnet ic radiation intensity, pulse. The electromagnetic radiation signals can respond the coal mining face stress distribution and transferring ahead. Drilling electromagnetic radiation can test the effect of blasting releasing pressure and provide a new method for testing the effect of blasting releasing pressure.