城郊煤矿二水平煤层底板突水危险性综合评价研究
段李宏, 张金陵
Study on the Risk Assessment of Water Inrush from the Floor of the Second Level Coal Seam in Chengjiao Coal Mine
煤炭工程 . 2021, (1): 128 -132 .  DOI: 10.11799/ce202101027