机译:定向长钻头组置换高排水巷道抽放瓦斯的机理与试验
College of Resources & Safety Engineering,China University of Mining and Technology(Beijing), Beijing 100083, China;
College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
College of Resources & Safety Engineering,China University of Mining and Technology(Beijing), Beijing 100083, China;
College of Resources & Safety Engineering,China University of Mining and Technology(Beijing), Beijing 100083, China;
College of Resources & Safety Engineering,China University of Mining and Technology(Beijing), Beijing 100083, China;
College of Resources & Safety Engineering,China University of Mining and Technology(Beijing), Beijing 100083, China;