This dissertation analyses the mining method and roof stability of hard-to-mine orebody. Mining of gently inclined thin and medium thick ore body with unstable roof isregarded as typical hard-to-mine ore body.
顶板不稳定的缓倾斜薄、中厚矿体为典型的难采矿体。
参考来源 - 金厂峪金矿难采矿体采矿过程中的顶板稳定性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
顶板不稳定的缓倾斜薄、中厚矿体为典型的难采矿体。
Mining of gently inclined thin and medium thick ore body with unstable roof isregarded as typical hard-to-mine ore body.
黄狮涝金矿矿体含泥率高，矿岩体松软破碎，属极不稳固的难采矿体。
Huangshilao gold mine belongs to the extra unstable ore deposit of which, the ore? Rock masses are broken and spongy with high soil containing rate.
大岭矿矿床地质及开采技术条件复杂，是国内有色矿山少有的难采矿体。
The geology and mining condition of deposits is complicated in Daling Mine, it is one of most difficulty are bodies for mining in China.
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