摘要
针对顶板高位定向长钻孔抽采效果不稳定,无法满足工作面瓦斯动态涌出治理需求等问题,为进一步提高钻孔全生命周期抽采效果,提升“以孔代巷”可替性和普适性,以理论分析、数值模拟、现场试验相结合的方法开展研究,通过研究确定了钻孔施工目标层位,得出了钻孔布置层位、抽采参数及回采期间工作面瓦斯涌出的变化规律,分析了顶板高位定向长钻孔有效治理采空区瓦斯的关键影响因素,可为顶板高位定向长钻孔进一步优化设计和提高抽采效果提供参考。
In view of the unstable drainage effect of high-level directional long borehole in roof,it cannot meet the needs of dynamic gas emission control in working face.In order to further improve the extraction effect of the whole life cycle of drilling,and improve the substitutability and universality of"replacing roadways with holes".The research was carried out by combining theoretical analysis,numerical simulation and field test.The target horizon of drilling construction is determined by research.The variation law of borehole arrangement horizon,extraction parameters and gas emission during mining was obtained.The key influencing factors of effective gas control in goaf by high-level directional long borehole are analyzed.It provides a reference for further optimization design and improvement of drainage effect of roof high-level directional long borehole.
作者
杨旭
马凯
Yang Xu;Ma Kai(Shanxi Tiandi Wangpo Coal Co.,Ltd.,Jincheng 048021,China;China Coal Technology and Engineering Group Chongqing Research Institute,Chongqing 400037,China;State Key Laboratory of Gas Disaster Monitoring and Emergency Technology,Chongqing 400037,China)
出处
《能源与环保》
2023年第5期32-37,共6页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
“十三五”国家科技重大专项(2016ZX05043005-003)。
关键词
顶板高位定向长钻孔
采空区
瓦斯治理
以孔代巷
差异化分区布置
动态涌出
high-level directional long borehole on the roof
goaf
gas control
replacing roadways with holes
differentiate zoning arrangement
dynamic emission
