钻爆压抽四位一体技术在单一煤层瓦斯治理中的应用

Application of Four in One Technology of Drilling,Blasting,Pressure and Pumping in Single Coal Seam Gas Control

通过对单一煤层水力压裂穿层定向卸压技术的应用研究,逐步查清该方法不能保证局部顺层抽采瓦斯效果的原因,进一步提出增设措施孔和穿层卸压控制爆破与水力压裂配合的钻爆压抽一体化消突措施,结果表明,该措施可控制水力压裂方向,避免无序压裂,消除了单纯水力压裂技术所造成的应力集中,可使煤(岩)体实现整体卸压,最终消除突出危险性。

The reason why the technology that directional pressure relief by penetrating the layers of hydraulic fracturing in single seam can not ensure the effect of bedding gas extraction was found partly according to applied research.Furtherly a new measure to eliminate conflict was proposed,which included drilling,blasting,pressure and pumping,and this measure would be used with adding holes,controlled blasting through layers relief and hydraulic fracturing.The results show that this integration outburst prevention measure can control the direction of hydraulic fracturing,avoid disorderly fracturing,eliminate the stress concentration resulted by hydraulic fracturing simply,and finally it can eliminate outburst danger.