School of Resources and Safety Engineering Central South University Changsha 410083 China;
School of Resources and Safety Engineering Central South University Changsha 410083 China;
School of Resources and Safety Engineering Central South University Changsha 410083 China;
School of Resources and Safety Engineering Central South University Changsha 410083 China;
Hubei Sanning Mining Co. Ltd. Yichang 443000 China;
Hubei Sanning Mining Co. Ltd. Yichang 443000 China;