煤炭与化工2024，Vol.47Issue(6)：103-106,111,5.DOI:10.19286/j.cnki.cci.2024.06.023
单一低透气性煤层水耦合深孔预裂爆破增透技术研究与应用
Single low permeability coal seam water coupling deep hole pre-splitting blasting
韩希伟 1韩言宁 1杨聿强 1伊嘉辉2
作者信息
- 1. 山东省煤田地质局第一勘探队,山东枣庄 277100||山东省瓦斯防治工程中心,山东枣庄 277100
- 2. 上海应用技术大学,上海 200000
- 折叠
摘要
Abstract
In order to solve the problems of poor gas permeability,difficult extraction and poor antireflection effect of traditional blasting methods in single low permeability coal seam,a method of replacing air decoupling with water coupling charge is proposed.The deep hole pre-splitting blasting model of water coupling charge was established by ANSYS/LS-DYNA software,and the effect of stress wave transmission and crack extension after blasting was analyzed.It was concluded that the water coupling charge method can better transmit the stress wave generated by blasting.The water-coupled deep-hole pre-splitting blasting test was carried out in the 14207 lower bottom drainage roadway of Xinzheng Coal and Electricity Co.,Ltd.in Henan Province.After the blasting cracking,the coal seam gas concentration and the standard gas pure flow were greatly improved.The mutual verification with the numerical simulation results shows that this method can better increase the permeability of the coal seam and improve the difficulty of gas extraction in a single low-permeability coal seam.关键词
低透气性煤层/瓦斯抽采/预裂爆破/数值模拟/水介质Key words
low permeability coal seam/gas extraction/pre-splitting blasting/numerical simulation/water medium分类
矿业与冶金引用本文复制引用
韩希伟,韩言宁,杨聿强,伊嘉辉..单一低透气性煤层水耦合深孔预裂爆破增透技术研究与应用[J].煤炭与化工,2024,47(6):103-106,111,5.
