厚煤层不同开采方法覆岩破坏规律研究 - 安全技术 - 中国煤矿安全网 关键词 厚煤层 开采方法 覆岩破坏高度 [gap=714]Keywords thick coal_seam; mining methods; destruction heights of the cover rocks
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最后对具体的充填开采方法提出了建议。
At last, some Suggestions were raised for the concrete backfill mining.
碎裂——对于现有化石燃料的储存，水力压裂是一个颇有争议的开采方法。
Fracking - Hydraulic fracturing is a controversial method for extracting fossil fuels from hitherto unreachable deposits.
本文所研究的就是巨厚湿陷性黄土层条件下保护地表安全的开采方法。
What this thesis studies is to protect the security mining method under the condition of thickness collapsible loss.
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