中文摘要：

为了解国内外的钻孔封孔现状,探索更为适用的封孔技术、封孔设备以及验证新型封孔设备实际应用效果,对目前国内外常见的封孔技术进行综述,指出各种封孔技术的适用范围及优缺点。在充分分析、研究原有封孔技术的基础上,提出钻屑回填带压注浆封孔技术,并针对钻屑的特点,设计出滤水型钻屑回填带压注浆封孔器,最后,通过现场工程试验对滤水型钻屑回填带压注浆封孔器的实际应用效果进行了检验。结果表明,滤水型钻屑回填带压注浆封孔器可以很好地解决封孔作业时的水灰比问题,在封孔作业中具有很多优势,且现场应用取得了良好的封孔效果,保证了瓦斯抽放作业安全、高效进行。

英文摘要：

In order to understand the present situation of drilling hole sealing at home and abroad,explore more suitable hole sealing technology and hole sealing device,and verify the practical application effect of new hole sealing device,the paper comprehensively discussed the hole sealing technology in China,such as cement mortar hole sealing,high polymer material hole sealing,bursa bag hole sealing and sealing hole opener hole sealing method,put out the advantages,disadvantages,and applicability of each hole sealing technologies. On the basis of fully studied on the original hole sealing technologies,the authors proposed the borehole sealing technology with drilling cuttings backfilled borehole. Based on the characteristics of drilling cuttings,a filtered water type sealing device with pressure grouting by drilling cuttings backfilled borehole were designed;At last,the device practical application of the results were tested. The conclusions showed that the sealing device better solve the problems of water ash ratio in borehole sealing operation with many advantages,and the field application effect is better in borehole sealing,so as to ensure safety and high efficiency of the gas drainage operation.