摘要
为研究大采高松软煤层的瓦斯治理,以赵庄煤业的3号煤大采高综采工作面为研究对象,针对目前矿井“四大三软、两多一难”的实际情况,实验推进工作面全流程全方位的瓦斯治理技术,通过优化底抽巷道设计,利用底抽巷穿层钻孔、切眼穿透孔、定向长钻孔以及顺层抽采钻孔等实现初采放顶及回采期间工作面瓦斯的综合高效治理,减少重点管控区域的瓦斯积聚现象,同时减少采面及上隅角瓦斯涌出量;在采面回采期间通过定向高低位长钻孔、定向穿层钻孔、架间临时接抽管理等方法,降低采空区瓦斯溢出风险,减少回采生产区域瓦斯量等方式多措并举,实现了采面回采过程中瓦斯治理的全方位立体管控,同时提出了“穿透孔”的概念,不断提高瓦斯治理能力水平,目前采面初采及回采期间瓦斯涌出量均在合理范围内,瓦斯动力现象和瓦斯异常涌出等情况基本消除,确保了采面的安全高效生产。
In order to study the gas treatment of the high-loose coal seam in large-scale mining,taking the No.3 coal mining high-fully mechanized mining face of Zhaozhuang coal industry as the research object,in view of the actual situation of"four major and three soft,two more and one difficult"in the current mine,the experiment promotes the all-round gas treatment technology of the whole process of the working face,and realizes the comprehensive and efficient treatment of gas in the working face during the initial mining and topping and mining by optimizing the design of the bottom pumping roadway,and using the bottom pumping roadway through the bed borehole,the incision hole penetrating hole,the directional long borehole and the bedding extraction borehole,so as to reduce the gas accumula-tion phenomenon in the key control area.At the same time,the amount of gas emitted from the mining face and the upper corner is re-duced.During the mining face mining period,through the directional high and low long drilling,directional through-layer drilling,and temporary inter-rack pumping management,etc.,the risk of gas overflow in the goaf is reduced,and the amount of gas in the mining production area is reduced,so as to realize the all-round three-dimensional control of gas treatment in the process of mining face,and at the same time put forward the concept of"penetrating hole"to continuously improve the level of gas treatment ability.The safe and efficient production of the mining face is ensured.
作者
马伟杰
高宏
MA Weijie;GAO Hong(Zhaozhuang Coal Industry Limited Company of Jinneng Holding EMG,Changzhi 046605,China;CCTEG Shenyang Research Institute,Fushun 113122,China;National Key Laboratory of Coal Mine Disaster Prevention and Control,Fushun 113122,China)
出处
《煤》
2025年第10期6-10,共5页
Coal
基金
国家自然科学基金:煤氧化自燃过程中的相变机理与临界态理论(51774182)。
关键词
高低位定向孔
优化巷道
穿透孔
架间接抽
瓦斯治理
high and low directional holes
roadway optimization
penetrating holes
rack indirect pumping
gas control
