| 下向测压钻孔封孔技术研究 |
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| 引用本文： | 王明重,吕 辰,陈 凯.下向测压钻孔封孔技术研究[J].中国安全生产科学技术,2014(4):109-113. |
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| 作者姓名： | 王明重 吕 辰 陈 凯 |
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| 作者单位： | [1]安徽理工大学能源与安全学院,安徽淮南232001 [2]煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001 |
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| 基金项目： | 安徽理工大学科研资助项目（ZZl308） |
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| 摘 要： | 目前复杂煤层赋存条件下下向钻孔测定煤层瓦斯压力普遍面临钻孔封孔效果不理想、煤层瓦斯压力测定失败、钻孔进水损坏压力表等问题。针对此,提出了一种新的测压封孔技术即联合持续增压二级封孔测压技术,阐述了该工艺的基本原理,配制了新型发泡水泥和封孔粘液,并进行了工业性试验。试验结果表明,应用该项技术能够有效地动态封堵发育中的裂隙从而实现准确快速测压。
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| 关 键 词： | 复杂煤层 下向钻孔 封孔 测压 |
Research on sealing technique for determination of gas pressure by downward-hole drilling |
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| WANG Ming-zhong,LV Chen,CHEN Kai.Research on sealing technique for determination of gas pressure by downward-hole drilling[J].Journal of Safety Science and Technology,2014(4):109-113. |
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| Authors: | WANG Ming-zhong LV Chen CHEN Kai |
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| Institution: | 1. Institute of Energy and Safety, Anhui University of Science ＆ Technology, Huainan Anhui 232001, China; 2. High Efficient Coal Mining Key lab of Co-construction of Anhui Province with Ministry of Education ,Huainan Anhui 232001 ,China) |
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| Abstract: | At present, the determination of coal seam gas pressure by drilling downward in complex coal seam occurrence condition is generally faced with problems such as unsatisfactory drilling hole sealing , failure of coal seam gas pressure determination and even damage of pressure gauge due to water in borehole .In this paper , a new pres-sure hole sealing technologya combined supercharging secondary pore pressure sealing technology was put forward , the basic principle of the process was expounded , a new type of foamed cement and sealing hole mucus were then prepared and the industrial test was carried out .Results showed that the new technology can dynamically fix developing fracture effectively so as to realize rapid determination of coal seam gas pressure . |
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| Keywords: | complex coal seam downward-hole drilling sealed drilling measuring pressure |
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