基于动力属性的深井灾害防治技术研究与应用

Research and Application on Prevention and Treatment Technology of Deep Mine Disaster Based on Its Dynamic Property

为了有效防治深井动力灾害,基于煤与瓦斯突出、冲击地压等的表现形式,在分析矿井动力灾害发生条件及孕育发展过程的基础上,构建了深井动力灾害属性鉴定体系,分别提出了应力主导型和应力、瓦斯复合型深井动力灾害防治技术,并在千米深井口孜东矿111303首采工作面进行了工程应用。应用效果表明:针对应力主导型深井动力灾害,在抽采达标的基础上确定了深孔静压注水区域防冲措施,区域措施评价指标预抽率达到35%,可解吸瓦斯含量降到3 m3/t以下,含水率增量超过2%,通过采取提高支护加强、控制回采速度、加大两巷超前支护距离和强度等局部措施,有效防止了动力灾害事故发生。

In order to effectively prevent deep mine dynamic disasters, according to the display form of coal and gas outburst and rock burst,the dynamic disaster property identification system was constructed on the foundation of analyzing its occurrence conditions and de-velopment process,the deep mine dynamic disasters attribute identification system was built,the control measures of both the stress leading dynamic disaster and the stress-gas compound disaster in deep mines were put forward,which was applicated in No. 111303 first coal min-ing face in Kouzidong 1 000 m deep shaft.The effect of engineering application showed that regional measure of static pressure water injec-tion was determined on the basis of reaching the drainage standard for its stress leading dynamic disaster condition.The evaluation indexes pre-pumping rate reached to 35%,desorption gas content reduced below 3 m3/t and water content increased more than 2%.The further lo-cal measures were taken,such as increasing support to strengthen,controlling mining speed,increasing the two lane fore poling distance and intensity,and so on.The dynamic disaster was effectively prevented.