摘要
针对综采面U型通风上隅角瓦斯经常超限的严重问题,将工作面的通风方式调整为W型通风,分别对综采面U型通风和W型通风条件下采空区瓦斯分布进行了数值模拟研究,得出两种不同通风方式下的采空区瓦斯分布规律。研究结果表明:工作面选用W型方式,在相同的条件下,能更有效地解决上隅角瓦斯超限问题,最后,通过将数值模拟风速值与理论计算风速值进行对比,模拟结果与理论计算结果非常接近,验证了数值模拟的正确性,为综采工作面瓦斯的防治提供了一定的理论依据。
According to the serious problems of U - type ventilation corner gas often overrun on mechanized mining face, it adjusted to the W - type ventilation on the working face, it respectively made numerical simulation of goal gas distribution under the condition of U - type ventilation and W - type ventilation on mechanized working mining face, it make goal gas distribution law come under two differ- ent ventilation modes. Simulation results show that ：the selection of W- type ventilation system can be more effectively addressed on the corner gas gauge problem under the same conditions, the upper part of the upper corner of the gas, Finally, by comparing the numerical simulation of wind speed values with the theoretical calculation of wind speed values, the simulation results are very close with the theo- retical results, it verify the correctness of the numerical simulation,it provides a theoretical basis for the fully mechanized face preven- tion and treatment
出处
《煤》
2012年第10期1-3,29,共4页
Coal
基金
国家自然科学基金(51174079)
关键词
W型通风
采空区
瓦斯运移
数值模拟
W - type ventilation
gob
gas migration
numerical simulation
