Gas overflowed in wood road 413 of this mine is through the link - roadway caused by goaf gas discrarging.

该矿413机巷后路瓦斯超限是采空区瓦斯通过联络巷泄漏所致。

youdao

Gas overflowed in wood road 413 of this mine is through the link - roadway caused by goaf gas discrarging.

该矿413机巷后路瓦斯超限是采空区瓦斯通过联络巷泄漏所致。

youdao