新河矿井下向抽采钻孔加压封孔技术研究

On the Technology of Extraction, Borehole, Inflating and Sealing in the Downward-hole of Xinhe Mine

为解决目前抽采钻孔封孔质量差,漏气严重,强度不高等问题,本文通过对加压封孔技术和施工工艺进行研究,确定了加压封孔技术参数和施工工序,现场试验结果表明该技术有效提高封孔质量,为瓦斯抽采、下向孔排水、水力压裂的顺利开展提供保障。

In order to solve the problems of the poor quality, serious air leakage, low intensity of gas drainage borehole and sealing at present, this paper studies the technology of inflating and sealing and the construction technology to determine the parameters and construction process of inflating and sealing technology. Experimental results show that, this technology effectively improves the quality of hole sealing, and provide guarantee for the smooth development in gas extraction, drainage in downward-hole and hydraulic fracturing.