高产高效综采工作面瓦斯涌出特征及规律

Feature and Regular of Gas Emission in High Output and Efficiency Workface

高产高效综采工作面通常瓦斯含量不大,但随着机械化程度的提高,开采强度加大,产量比较集中,采煤生产过程中,单位时间内瓦斯涌出量较大,经常会造成工作面回风隅角和回风巷瓦斯超限。掌握高产高效综采工作面瓦斯的来源构成、瓦斯的涌出特征,为安全生产提供可靠的依据,相应采取不同的办法,处理和解决各地点的瓦斯超限问题。

Gas emission rate usually is low in high output and efficiency workface, but mechanization level is raised,mining strength is heavy, output is also concenfration. Gas emission rate of per unit time is high when mining, it makes gas exceeding limit in reture airflow corner and return airflow roadway of workface. If source constitution and emission feafure of gas are known in high output and efficiency workface, raliable base is provided for safety production,gas exceeding limit problem can be solved with different method in different place.