Mining under village in a scientific and rational way is an important issue for boosting economic and social benefits for new and old mining areas;

科学合理地开采村庄下压煤是新老矿区提高经济、社会效益的重要问题，也是煤矿开采技术中探讨的重要理论和实践问题。

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Mining under village in a scientific and rational way is an important issue for boosting economic and social benefits for new and old mining areas;

科学合理地开采村庄下压煤是新老矿区提高经济、社会效益的重要问题，也是煤矿开采技术中探讨的重要理论和实践问题。

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