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博搏夫多利斯克煤田的厚煤层内因火灾的危险性较大,主要因素是:1、煤的吸氧能力强。煤层上分层的煤自然倾向性大。气体特征指数达到 S=31～32,比该煤层其它两个分层高50～100%。煤体构造破碎严重。2、由于开采条件复杂,煤层厚、机采、相邻煤柱不稳定,导致采空区大量丢煤,存在自然危险。3、采空区深部漏风,造成有可能发生危险地带加大。该地带氧含量超过回采工作
The risk of fire in the thick seam of Bopud Dorisk coalfield is greater. The main factors are as follows: 1. The oxygen absorption capacity of coal is strong. Coal stratified coal natural tendency. The gas characteristic index reaches S = 31-32, which is 50-100% higher than the other two strata of the coal seam. Broken coal structure severely. 2, due to complex mining conditions, thick coal seam, machine mining, unstable adjacent coal pillars, resulting in a large number of lost coal mined coal, there is a natural danger. 3, Gob deep air leakage, resulting in danger zone may increase. The area contains more oxygen than the work of mining