新安煤田煤与瓦斯突出特征及控制因素分析

Analysis on coal and gas outburst features and control factors in Xin'an mine

为了掌握煤与瓦斯突出的特征和控制因素,提高煤矿防突工作的针对性,本文通过统计分析了新安煤田内义煤集团的4个煤与瓦斯突出矿井近年来发生的瓦斯动力现象,综合分析得出新安煤田煤与瓦斯突出具有以小型突出为主、突出前有预兆并受作业方式诱导、突出点附近瓦斯质量体积和瓦斯压力高、易发生在掘进工作面和煤层变化带的特征;分析总结了埋藏深度、瓦斯赋存、地质构造、煤层厚度变化、构造软煤、作业工艺是控制新安煤田煤与瓦斯突出的主要因素,为该煤田防治煤与瓦斯突出提供了理论指导.

In order to know the properties and control factors of coal and gas outburst, and ascertain the gas outburst prevention of mines, gas outburst in Xin＇an minefield is of the following properties： diminutive volumes , be foreboding and induced by operation way before outburst, high gas volumes and pressures around outburst location, and be regular in dig operation seam and in variational area of coal seam are obtained, by statistic analysis on gas dynamic phenomenon of four mines in Yima mining corporation, Xin＇an mine. Embedding depth , gas accumulation, geological conformation, variance of coal seam thickness, deformed soft coals and operation technics, which are the main factors to control coal and gas outburst of Xin＇an coalfield are given detailed summrized. It provides theoretical guidance to prevent and control the coal and gas outburst for mines in the mining area.