Key;
Laboratory;
of;
Coal;
Resources;
and;
Mine;
Safety,;
School;
of;
Safety;
and;
Engineering,;
China;
University;
of;
Mining;
&;
Technology,;
Xuzhou;
221008,;
China;
National;
Machinery;
Import;
&;
Export;
Corporation,;
Beijing;
100037,;
China;
of;
Safety,;
and;
Engineering,;
Xi;
'an;
University;
of;
Science;
and;
Technology,;
Xi'an;
710054,;
China;
Mining;
Group,;
Xuzhou;
221000,;
China;