机译:特厚煤层巷道和立煤层采空区回顶技术。
School of Mines, China University of Mining&Technology, Xuzhou 221116, China;
School of Mines, China University of Mining&Technology, Xuzhou 221116, China;
School of Mines, China University of Mining&Technology, Xuzhou 221116, China;
School of Mines, China University of Mining&Technology, Xuzhou 221116, China;
School of Mines, China University of Mining&Technology, Xuzhou 221116, China;