东欢坨矿副井井架下沉原因分析及防治措施
魏跃东,刘晋虎,刘明
The analysis and prevention measures for the subsidence of Donghuantuo Coal Mine auxiliary shaft headframe
煤炭工程 . 2014, (10): 140 -142 .  DOI: 10.11799/ce201410040