Zhengzhou Design and Research Institute Company Limited of Coal Industry

为解决瓦斯涌出量小的矿井瓦斯灾害事故频发的问题,通过对义棠煤业瓦斯治理现状进行分析,采用瓦斯地质理论对局部煤层瓦斯异常涌出的原因进行研究,认为地质构造作用使地层受到揉皱破碎,致使顶板灰岩裂隙发育,大量游离态瓦斯贮存在裂隙中;在采掘活动扰动灰岩裂隙发育区时,游离态瓦斯集中释放造成局部瓦斯异常涌出。据此分析了瓦斯生成条件、瓦斯存储条件、瓦斯盖层条件对瓦斯涌出量的影响,并提出采用施工前探钻孔、煤层及煤层与顶板结合部位施工抽采钻孔、采用均压通风、增加工作面风量、加强矿井机电设备管理等措施防止煤与瓦斯突出事故的发生。

In order to solve gas disasters frequently occurred in coal mines with low gas emission, with the analysis conducted on gas control status of Yitang Coal Industry, the gas geological theory was applied to study the causes of the gas abnormal emission from local seam. The study held that the geological structure role coul d make the strata affected with crumpled broken, thus could make cracking development of the roof limestone and could make a large amount of free state gas stored i n the cracks. In the cracking development zone of the limestone affected by the mining and excavation activities, a centralized emission of free state gas would cause a local gas abnormal emission. Therefore, the paper analyzed the gas generation condition, gas storage condition and gas cap rock condition affected to the gas emissio n quantity.The advance exploration borehole, gas drainage borehole drilled at the seam and seam with roof jointed location, pressure balancing ventilation, increased V entilation of the coal mining face, enhanced management of the mine electric and mechanical equipment and others measures were applied to prevent the coal and gas accident occurred.

国家自然科学基金资助项目(50904024)；