作者单位:Wang Lianhe(NO.1 Coal Mine of Huangling Mining Co.Ltd,Yan'an,727307,Shaanxi,China;)王联合(黄陵矿业集团公司一号煤矿 陕西延安 727307)Hou Junfeng(School of Architecture and Civil Engineering,Xi'an University of Science and Technology,Xi'an,710054,Shaanxi,China)侯俊锋(西安科技大学建筑与土木工程学院 陕西西安 710054)