是以正确的选择和应用液压支架是长壁工作面采煤乐成的先决前提.
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Modern longwall mining employs hydraulic powered supports at the face area.
现代长壁工作面采煤已在挖掘区使用液压支架.
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Today chock-shield support is extensively used to control the superjacent strata of longwall face.
目前,大量的长壁工作面采用支撑 —— 掩护式支架控制上覆岩层.
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Its successful selection and application are the prerequisite for successful longwall mining.
正确、合理地选择液压支架架型是长壁工作面采煤成功的前提和关键.
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The roof slice longwall method increases the work of laying false roof for next slice.
长壁采煤法的采煤工艺具有多重特点:顶分层采煤增加了要为下分层填设假顶的工作.
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随着采深加大、工作面单产的提高及地质条件的变化,潞安矿区综放工作面瓦斯超限频繁,严重制约了综放集约化生产水平进一步提高。
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