煤矿安全2019，Vol.50Issue(9)：21-24,4.DOI:10.13347/j.cnki.mkaq.2019.09.007
含节理条件下双孔增透裂纹扩展规律的模拟研究
Simulation Study on Propagation Law of Double-hole Permeability Improvement Cracks with Joints
王文才 1王政 1张桉 1李雨萌1
作者信息
- 1. 内蒙古科技大学 矿业研究院,内蒙古 包头 014010
- 折叠
摘要
Abstract
To study the crack propagation laws of high-energy gas impact permeability improvement technology at different hole spacings and joint angles, improve the efficiency of gas extraction in low permeability coal seam, RFPA2D-dynamic numerical calculation is used to establish a double-hole permeability improvement model. The effects of different hole spacings and joint angle on crack propagation in three stages before, during and after permeability improvement impact were analyzed and compared. The results show that the spacing of holes has a great influence on the middle and later stages of permeability improvement impact, and different joint angles have different effects on the direction of crack expansion, the mode of connection between cracks and the degree of joint end damage.关键词
冲击增透/低渗透煤层/抽采效率/双孔间距/节理角度/裂纹扩展Key words
impact permeability enhancement/low permeability coal seam/extraction efficiency/double hole spacing/joint angle/crack propagation分类
矿业与冶金引用本文复制引用
王文才,王政,张桉,李雨萌..含节理条件下双孔增透裂纹扩展规律的模拟研究[J].煤矿安全,2019,50(9):21-24,4.
