爆破卸压技术防治冲击地压的应用与检验

Inspection and application of blasting and pressure released technology to mine pressure bump prevention and control

为进一步改善爆破卸压预防冲击地压过程中卸压前后信息识别、提取困难及卸压效率低的现状,基于能量释放的电磁辐射原理,针对杨村煤矿冲击地压特点,结合该矿工程地质概况及爆破参数,阐述利用电磁辐射法对卸压爆破进行监测,通过现场试验与电磁辐射强度、脉冲数指标的监测分析,得出爆破卸压前后的电磁辐射规律及各指标变化规律。结果表明:电磁辐射指标尤其是强度指标可以有效反馈爆破卸压前后的弹性能变化规律,该指标对爆破卸压地点及爆破强度的确定具有指导作用,现场工程实践取得良好的检验效果。

In order to further improve the information identification and pick up difficulties before and after the pressure released during the mine pressure bump prevention and control process with the blasting pressure releasing and the status of the low pressure releasing efficiency,based on the electromagnetic radiation principle of the energy released,according to the mine pressure bump features of Yangcun Mine,in combination with the mine engineering geological conditions and the blasting parameters,the electromagnetic radiation method was applied to monitor and measure the pressure released with the blasting. With the site test and the monitoring and measuring on the electrom agnetic radiation strength and pulse number index,the electromagnetic radiation law and each index variation law before and after the blasting pressure released were obtained. The results showed that the electromagnetic radiation index,especially the strength index could effectively feed back the variation law of the elastic energy before and after the blasting pressure released and the index could have the guidance function to set up the blasting pressure released location and the blasting strength. The site engineering practices obtained excellent inspection effect.