神府煤田煤层自燃研究

根据对神府煤田休罗纪煤层自燃区的详细观察和分析,论述了煤层自燃的特征,确定了煤层自燃的时代,进一步讨论了煤层的自燃机理和最终自燃范围,认为本区煤层自燃主要受古地貌、古气候和低的煤变质程度以及惰质组的高含量等因素的影响,且惰质组是煤层自燃的关键和导火物质。煤层自燃是沿露头和垂直露头两个方向进行的,并最终因煤层上覆岩石垮落、塌陷堵塞了供氧通道而自行熄灭。煤层自燃区主要是沿古冲沟两侧成带状展布。这为生产上查明煤层自燃范围提供了理论和实际依据。

STUDY ON SPONTANEOUS COMBUSTION OF COAL SEAMS IN SHENFU COAL FIELD

The paper describes the characteristics of spontaneous comoustion of coal seams ann also determines it's age, according to the systematic observation and analysis of spontaneous combustion area in ShenFu coal field. The mechanism and area size of spontaneous combustion of coal seams is mainly influenced by the factors of palaeogeomorphology,palaeoclimate, lower metamorphic degree of coal and higher amount of fusinized matter. The fusinized matter is the key and firstly firing substance of spontaneous combustion. The spontaneous combustion of coal seams was carried out along the coal outcrop and across it, and spontaneusly ceased at last because of the space of providing oxide blocked up by the collapse of rocks on the ceal bed. The area of spontaneous combustion is distributed along both sides of the old trench and valley. This provides the theoretical criteria and practical data for the productive department to divide the area of spontaneous combustion of coal seams.