文档介绍：煤与瓦斯突出机理研究进展
王永祥杜卫新
平顶山工业职业技术学院(河南平顶山 467001)
摘要:随着煤矿开采深度的加大,煤与瓦斯突出这一灾害日益严重,要求对突出机理作深入研究。本文综述了瓦斯作用说,化学本质说,地应力作用说和综合假说。结果指出,进一步的研究应把瓦斯因素、煤的物理力学性质和结构特性的影响结合起来,从时间和空间上分析含瓦斯煤岩的强度、形变、流变、集气性和物理化学性等变化规律,才能最终解决煤与瓦斯突出机理问题,尤其是煤与瓦斯延迟突出机理问题。
关键词:煤与瓦斯突出;机理;地应力;瓦斯
Progress in study on the mechanism of coal and gas outburst
Abstract:With the deepness increase of coal mining, the disaster of coal and gas outburst es increasingly it requires the mechanism of coal and gas outburst to be studied particularly. The current research status of outburst mechanism such as gas effect theory, chemistry essence theory ,ground press effect theory and synthesis theory were summarized in this paper. It is pointed that future research should aim at the following aspects which bining gas factor with physics mechanics and structure properties of coal, analyzing the rule of intension, shape change, flow change, accumulating gas and physical chemistry character of coal and rock holding gas from space and time. The mechanism of coal and gas outburst and delay outburst especially will be accounted for ultimately.
Keywords: coal and gas outburst; mechanism; ground press; gas
1 引言
煤与瓦斯突出是煤矿井下生产过程中发生的一种伴有声响和猛烈力能效应的复杂动力现象,且随开采深度的加大,这一问题日益突出。我国自1988年颁布并执行《防治煤与瓦斯突出细则》以来,经过二十年来的技术攻关及“四位一体”综合防突技术的推广,防治突出的整体水平已得到较大提高。但是,迄今为止,对各种地质及开采条件下突出的机理还未完全掌握,尤其是煤与瓦斯延期突出,因隐蔽性强,影响因素多,机理复杂,对煤矿安全生产危害更大。
2 煤与瓦斯