The Most Effective Degasing Methods When Carrying Out Preparatory Coal Minings

Abstract

The article presents the most effective degassing methods when carrying out preparatory workings for coal, provides an analysis of the effectiveness of each degassing method, the conditions for their use to reduce the gas content of the formation, increase the pace of preparatory workings and the safety of mining operations. To reduce the gas content of workings carried out in a coal seam, preliminary degassing of the seam can be used, carried out before the working, or degassing of the coal mass during the working period. The most effective way to reduce methane emission into development workings is preliminary degassing of the coal mass with a period of gas capture before the start of tunneling work in the prepared area of at least 12 months.