Software engineering Software product Quality Requirements and Evaluation SQuaRE Requirements for quality of Commercial Off The Shelf COTS software product and instructions for testing

pmvwine-3.79.0.25051

通过在龙山矿25051下底抽巷采用低透气性煤层水力冲孔强化抽采优化技术,采用普通穿层钻孔和穿层水力钻孔组合布置设计,瓦斯抽采纯量的4~5倍,延长抽采孔寿命,从而提高了瓦斯抽采率,增大煤层渗透率,扩大钻孔抽采有效影响范围,提高煤层瓦斯抽采效率,缓解龙山煤矿抽、采、掘接替紧张局面,为低透气性煤层开采过程中的瓦斯治理提供技术支撑。