矿井瓦斯(CMM)抽采与地面开发设计的理论研究与实践

Study on Theory and Practice of CMM Drainage and Surface Development Design

本文从与煤伴生的煤层甲烷赋存的概述入手,分五部分阐述了煤层甲烷在采矿活动影响及矿井通风作用下,在煤层围岩三维坐标空间里随时间变化的运移规律;在此基础上,指出了煤矿井下瓦斯抽采与地面开发设计所遵循的原则,并通过实践加以验证;最后指出,高瓦斯含量(包括煤与瓦斯突出)、低透气性、复合煤层群开采条件的矿区,只要遵循瓦斯在采矿活动、矿井通风负压的影响下的运移规律进行设计,是可以实现矿井瓦斯(CMM)高效抽采与地面开发的。

This paper generally describes the occurrence of coalbed methane （CBM） which is the associated gas of coal resource, and explains in 5 parts the law of motion of CBM which varies with time in 3D coordinates space of coal - enclosing rocks affected by coal mining activities and coal mine ventilation. It also points out the compliance principles when designing underground gas drainage and surface development of CBM, and proves it through practice. Designing gas drainage and development by obeying the law of motion of CBM in coal mine activities with ventilation, eflqcient gas drainage and surface development could be realized in mining areas whose mining conditions include high gas concentration （including coal and gas outburst）, low permeability and compound coal seam groups.