水力冲孔卸压增透技术的应用研究

Study on Application of Hydraulic Punching Pressure Relief and Permeability Enhancement Technology

为有效缓解陈四楼煤矿区域瓦斯含量高、存在突出危险等现状,对工作面煤体进行了水力冲孔卸压增透。重点对该煤矿的水力冲孔卸压增透技术试验进行了探讨,得出了试验后的单孔抽采纯量。结果表明,抽采1个月后日抽采纯量从100 m^(3)/d提高到300 m^(3)/d左右,且4个月内冲孔钻孔的抽采体积分数保持稳定在30%以上,有效提升了区域瓦斯抽采效率。

In order to effectively alleviate the present situation of high gas content and outburst danger in Chensilou Coal Mine,the hydraulic punching pressure relief was carried out on the coal body of working face.This paper mainly discussed the experiment of hydraulic punching pressure relief and permeability enhancement technology in the coal mine,and obtained the scalar amount of single hole drainage after the test.The results showed that the daily drainage net volume was increased from 100 m^(3)/d to 300 m^(3)/d after one month,and the drainage volume fraction of punching holes remained stable at more than 30%within 4 months,which effectively improved the regional gas drainage efficiency.