In recent years, with the increase of the coal mining depth, intensity, rate and the exploitation scale, coal mining is under the serious threat of groundwater.

近年来，随着煤炭开采深度、开采强度、开采速度、开采规模等不断增加，煤炭开采受地下水威胁、危害日趋严重。

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In recent years, with the increase of the coal mining depth, intensity, rate and the exploitation scale, coal mining is under the serious threat of groundwater.

近年来，随着煤炭开采深度、开采强度、开采速度、开采规模等不断增加，煤炭开采受地下水威胁、危害日趋严重。

youdao