地面L型井抽采采空区瓦斯适应性及其水平段位置优选
李丹, 苏现波
Adaptability of gas drainage in goaf by surface L-shaped boreholes and location optimization of horizontal section of borehole
煤炭工程 . 2022, (4): 79 -85 .  DOI: 10.11799/ce202204015