建筑物下矿床开 采
coal mining under building, railway and water needs to both ensure safety in production, and recover underground resources reasonably.
“三下”采煤既要保证安全,又要科学合理地索取地下资源。
study on safety pillar for fault protection in strip mining under building
建筑物下条带开采断层保护煤柱留设研究
discussion on feasibility of coal mining under building structures with like gypsum material back filling
似膏体充填建筑物下采煤可行性探讨
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