Research progress on permeability improvement mechanisms and technologies of coalbed deep-hole cumul

• 作 者: Deyong Guo Pengfei Lv Jiechao
• 机 构: SchoolofEmergencyManagementandSafetyEngineering,SafetyEngineeringCollege
• 出 处: 国际煤炭科学技术学报:英文版
• 发表日期: 2020年2期
• 关键词: Cumulative blasting Fracturing mechanism Coalbed permeability improvement Permea
• 基金项目: The project was supported by the National Science Foundation of China(41430640,U1704242).

Coalbed gas extraction is an important means of exploiting and utilizing gas resources,as well as a means of preventing coal mine disasters.In view of the low gas extraction rate from coalbeds with high gas content and low permeability,a method of improvi