of;
Energy;
and;
Safety;
Engineering,;
Hunan;
University;
of;
Science;
and;
Technology,;
Xiangtan;
411201,;
China;
Provincial;
Key;
Laboratory;
of;
Safe;
Mining;
Techniques;
of;
Coal;
Mines;
(Hunan;
University;
of;
Science;
and;
Technology),;
Xiangtan;
411201,;
China;