论文部分内容阅读
第一讲 概述 煤和瓦斯突出是煤矿井下采掘过程中发生的一种煤和瓦斯的突然运动。在极短的时间内(几秒至几分钟),从煤层内部以极快的速度向采掘空间喷出大量的煤和瓦斯(沼气或二氧化碳,或二者的混合物)充塞巷道,使采掘工作面的煤壁遭受破坏,巷道设施被摧毁,通风系统被破坏,并可能造成瓦斯窒息、瓦斯爆炸和煤流埋人等事故。因此,了解煤和瓦斯突出的基本知识,学习防治的技术措施,对确保安全生产具有十分重要的意义。
Lecture 1 Overview Coal and gas outburst is a sudden movement of coal and gas that occurs during underground coal mining. In a very short period of time (seconds to minutes), large amounts of coal and gas (methane or carbon dioxide, or a mixture of both) are ejected from the inside of the coal seam into the mining space at an extremely fast rate to fill the roadway so that the mining face Of the coal wall was destroyed, the tunnel facilities were destroyed, the ventilation system was destroyed, and may cause gas suffocation, gas explosion and coal burial and other accidents. Therefore, to understand the basic knowledge of coal and gas outburst, to learn the technical measures for prevention and control is of great significance to ensuring safety in production.