Laboratory;
of;
lntegrated;
Coal;
Exploitation;
and;
Gas;
Extraction,;
Anhui;
University;
of;
Science;
and;
Technology,;
Huainan;
232001,;
China;
of;
Energy;
and;
Safety,;
Anhui;
University;
of;
science;
and;
Technology,;
Huainan'23"2001,;
China;
Earth;
Science;
and;
Resource;
Ensineering,;
Kenmore;
4069,;
Australia;
of;
Mining;
Engineering,;
Taiyuan;
University;
of;
Science;
and;
Technology,;
Taiyuan;
030024,;
China;
气体扩散; 圆柱形; 煤样品; 误差分析; 逼近; 通用; 时间损失; 数学推导;