@article{:1142, author = {[null, null, null, null, null, null]}, title = { }, publisher = {Journal of Mining and Safety Engineering}, year = {2018}, journal = {Journal of Mining and Safety Engineering}, volume = {35}, number = {6}, eid = {1142}, pages = {1142-1149}, keywords = { }, url = http://ckxb.cumt.edu.cn/EN/abstract/article_1198.shtml }