A COAL SEAM GAS DYNAMIC ACTIVITYAND ITS DEGASING APPLICATION NECESSITY

Abstract

Mining and geological conditions of a coal seam occurrence and methods of its development determine the choice of a rational method for gas emission control at an extraction site. The engineering decisions’ effectiveness taken at the mine to prevent dangerous gas situations and to ensure safe mining conditions depends on the coal seam natural properties assessment accuracy. The authors of the article propose a new approach for gas emission control methods rational choice. The approach on increasing the density of the initial mining and geological information is based on the data of geological exploration holes on the seams interpenetration and the obtained regularities on the coal seam gas component realization. As a complex indicator for assessing the natural properties of the seam, the indicator of its gas dynamic activity is taken into account with consideration of the gas contained in coal energy realization. Numerical values of this indicator allow to zonate the seam according to the levels of gasdynamic phenomena (from gas to gasdynamic), and also to calculate the required degassing factor of the developed seam to prevent dangerous level of gas energy realization. It is shown that taking into account the structuring of the rock massif in specific mining- geological and mining-technological conditions, it is possible to determine in advance and more accurately the parameters of the degassing holes of the satellite seams.

Keywords

• УГОЛЬНЫЙ ПЛАСТ
• COAL SEAM
• ГАЗОНОСНОСТЬ
• GAS CONTENT
• ЭНЕРГИЯ ГАЗА
• GAS ENERGY
• ГАЗОДИНАМИЧЕСКАЯ АКТИВНОСТЬ
• GAS-DYNAMIC ACTIVITY
• ДЕГАЗАЦИЯ
• DEGASSING
• ВЫЕМОЧНЫЙ УЧАСТОК
• УПРАВЛЕНИЕ ГАЗОВЫДЕЛЕНИЕМ
• EXTRACTION SECTION