Abstract：In order to reveal laws of air-flowing field and gas-volume-concentration field of the coal left in goaf, numericalsimulation and field measurement were adopt. Through using the interface named UDF, the coal face advancing process was added in CFD calculation model. Based on the moving coordinate, gas percolation model of the left mine in goaf was built. The results of the numerical simulation contains some comparison with the measured results of gas emission of 20130 fully mechanized coal face with U-tube ventilation system in No.10 mine of Pingdingshan Coal Mining Corp. The results showed that high advancing speed of coal face and small air quantity of coal face leaded to high gas-volume-concentration in mining roadways and goaf. The results of numerical simulation was consistent with the measured results, which could be used to reflect the actual situation on site.
刘彦青,张浪,李伟,桑聪,王恩. 移动坐标下采空区流场及遗煤瓦斯浓度场分布[J]. 辽宁工程技术大学学报(自然科学版), 2017, 36(3): 243-248.
LIU Yanqing,ZHANG Lang, LI Wei,SANG Cong,WANG En. Air-flowing field and gas-concentration field of the coal left
in goaf based on the moving coordinate. Journal of LNTU.Natural Science, 2017, 36(3): 243-248.