作者单位:JIN Zhi-yu,PAN Li-gangt(The 31st Construction Division of Chinese Coal Fifth Construction co. LTD. Handan Hebei 056003, China)靳志宇,潘利刚(中煤第五建设有限公司第三十一工程处,河北 邯郸 056003)WANG Chun-Lei(Zhaolou Cal Mine of Heze Energy Chemical Industry Company of Yah Coal, Yuncheng Shangdong 274701, China)王春雷(兖煤菏泽能化公司赵楼煤矿,山东 郓城 274701)