2.  >>  成人高等教育 / 煤矿开采学
 成人高等教育 / 煤矿开采学
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63、（  ）采煤法的实质就是在厚煤层中，沿煤层(或分段)底部布置一个采高2-~3 m长壁工作面，用常规方法进行回采，利用矿山压力的作用或辅以人工松动方法，使支架上方顶煤破碎成散体后由支架后方(或上方)放出，并经由刮板输送机运出工作面。

  • A、

    走向长壁

  • B、

    放顶煤

  • C、

    倾斜长壁

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煤矿开采学
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