作者单位:Liu Zhili(Quanjiahe Coal Mine,Chenghe Mining Group Company,Weinan,715200,Shaanxi,China)刘志利(陕西陕煤澄合矿业有限公司权家河矿 陕西渭南 715200)Yu Yuanxiang(School of Architecture and Civil Engineering,Xi'an University and Technology,Xi'an,710054,Shaanxi,China)于远祥(西安科技大学建筑与土木工程学院 陕西西安 710054)