陕西煤炭2025，Vol.44Issue(8)：17-21,5.DOI:10.20120/j.cnki.issn.1671-749x.2025.0803
巨厚煤层超高压水力割缝卸压增透技术试验研究
Experimental study on ultra-high pressure hydraulic cutting and pressure relief and permeability-enhancing technology in thick coal seams
张世范 1季飞 2鲜旭红 1王宁 1陈玉东1
作者信息
- 1. 窑街煤电集团有限公司,甘肃兰州 730080
- 2. 中煤科工集团重庆研究院有限公司,重庆 400037||煤矿灾害防控全国重点实验室,重庆 400037
- 折叠
摘要
Abstract
In order to achieve efficient gas control in thick and high gas,high geo-stress,and low permeability coal seams,and effectively alleviate the tight situation of"pumping,excavation,and mining"replacement in mines,a test study of ultra-high pressure hydraulic cutting seam pressure relief and permeability-enhancing technology was carried out on the 16219 working face of Jinhe Coal Mine.The test results showed that:For the second layer of coal in the 16219 working face,the maximum cutting seam pressure was 90～100 MPa,the spacing between each cutting seam was 3～5 m,the cutting seam time was maintained for 15～20 minutes,and the average coal output per cutting seam was 0.25～0.41 t.After implemen-ting ultra-high pressure hydraulic cutting,the uniform debris discharge rate in the cutting seam control area was 4.54‰.Be-fore and during cutting,the cutting seam control area had a uniform debris discharge rate of 4.54‰.The maximum energy values are 6.18 × 103 J and 6.00 × 103 J,respectively.The average daily energy events are 0.4 and 1.9,respectively.The average daily energy sizes are 2.88 × 102 J and 5.50 × 102 J,respectively.After cutting,the decrease in the proportion of high-energy events and the increase in the proportion of low-energy events indicate that the use of ultra-high pressure hy-draulic cutting can effectively achieve pressure relief and permeability enhancement in thick coal seams.关键词
巨厚煤层/高瓦斯含量/高地应力/低透气性/超高压水力割缝Key words
thick coal seam/high gas content/high ground stress/low permeability/ultra-high pressure hydraulic cutting分类
矿业与冶金引用本文复制引用
张世范,季飞,鲜旭红,王宁,陈玉东..巨厚煤层超高压水力割缝卸压增透技术试验研究[J].陕西煤炭,2025,44(8):17-21,5.
