Numerical simulation and experiment analysis on goaf methane drainage of strike high-position tunnel
Numerical simulation and experiment analysis on goaf methane drainage of strike high-position tunnel
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发表时间：
2012
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通讯作者：
M. Chao
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作者：
M. Chao
为了得到理想的走向高位巷道瓦斯抽放参数，根据采空区瓦斯运动的基本方程，利用FLUENT软件进行数值模拟，确定了走向高位巷道的最佳抽放位置。结果表明，综采工作面走向高位巷道的垂直高度应在底板上方20m，距倾斜方向回采的水平距离应为14m，并在张集煤矿1111工作面进行了试验。从试验效果来看，高位走向巷道的垂直高度应在底板以上20m，斜向水平距离应为14m。利用FLUENT数值模拟方法确定的走向高位巷道抽放位置可靠，布置理想的高位巷道具有浓度高、排水量大、抽放稳定等优点，能有效解决综采工作面及上拐角瓦斯超载问题，有利于矿井安全生产，抽放参数可推广到其他类似矿井，具有积极的安全、经济和社会效益。
In order to gain ideal parameters for methane drainage of strike high-position tunnel,based on basic equation in goaf methane movement,the best drainage location was determined by numerical simulation method through FLUENT,which showed that vertical height of strike high-position tunnel should be 20 m above the soleplate in fully mechanized coal mining working face,the horizontal distance of 14 m to the return in incline direction should be adequate,and it was tried in No.1111 working face of Zhangji Coal Mine.From the experiment effect,the drainage location of strike high-position tunnel determined by numerical simulation method through FLUENT was reliable.High-position tunnels of ideal layout have the advantages of high concentration,large capacity and stability drainage,and can effectively solve methane overload problem in fully mechanized coal mining working face and top corner,and are beneficial to safety production for mines.The pumping parameters can be introduced to the other similar mines,and have positive significance in safety,economy and society effect.