| 姚尚文,卢平,余陶.深部高瓦斯低透突出煤层水力化增透技术模拟分析及试验研究[J].安徽建筑大学学报,2021,29(6):8-14 |
| 深部高瓦斯低透突出煤层水力化增透技术模拟分析及试验研究 |
| Simulation Analysis and Experimental Study on the Anti-reflection Technology of Hydraulics in Deep Outburst Coal Seam with High Gas and Low Permeability |
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| DOI： |
| 中文关键词: 瓦斯 水力冲孔 有效抽采半径 透气性系数 抽采瓦斯纯量 |
| 英文关键词: Dabie Mountain area traditional architecture cultural inheritance Liuhuo uprising memorial hall architectural design |
| 基金项目:安徽省重点研究与开发计划项目（1804a0802208） |
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| 中文摘要: |
| 本文以淮南矿区低透气性煤层为试验区，考察钻孔采取水力化措施，形成水力增透理论。水力冲孔后，储层内孔隙压力发生很大变化，导致地应力场的变化，并在钻孔的煤孔段形成较大的圆柱体状的洞穴，煤体卸压范围扩大，裂隙入渗进一步扩大，透气性增强。在对淮南潘二矿 A 组煤工作面进行水力冲孔试验，取得了较好的效果，抽采半径增加 1.25 倍，抽采量增加 2.68 倍，煤体的透气性系数增加到原来的 2.5 倍，衰减系数只有原来的 1/3，降低了煤层的突出危险性，保证了安全生产。 |
| 英文摘要: |
| In this paper，a low permeability coal seam in Huainan mining area is taken as the test area，and the hydraulic antireflection theory is applied to study the borehole. With hydraulic punching，the pore pressure in the reservoir changes greatly，whichleads to the change of geostress field and the formation of a large cylindrical cave in the coal hole section of the borehole. The range ofcoal pressure relief is expanded，and the coal fissure permeability is further promoted，causing the enhancement of air permeability.The hydraulic punching test carried out on the coal working face of group A of Huainan Pan’er coal mine has achieved good results. Asdrainage radius increased 1.25 times and gas drainage flow rate increased 2.68 times，coal permeability increased by 2.5 times，whilethe attenuation coefficient is only 1/3 of the original. The test reduces the risk of outburst coal seam and ensures safe production. |
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