采空区瓦斯分布规律的模拟研究

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。

Numerical Simulation of Gob Gas Distribution

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 goaf gas distribution under the condition of U-type ventilation and W-type ventilation on mechanized working mining face,it make goaf gas distribution law come under two different 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 theoretical results,it verify the correctness of the numerical simulation,it provides a theoretical basis for the fully mechanized face prevention and treatment.