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首页> 外文会议>International Symposium on Mine Planning and Equipment Selection >Geomechanical research to design the efficient mining used on the deposits in Jiu Valley
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Geomechanical research to design the efficient mining used on the deposits in Jiu Valley

机译：地质力学研究设计九谷矿床上使用的高效采矿

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摘要

For the purpose of increasing the mining efficiency and getting a low cost per ton of extracted coal, the undermining of thick coal beds has been widely used during these last few years. This method provides a growth of the technical and economic indices together with a diminution of the necessary preparatory operations and a diminution of the final costs per ton of extracted coal. The intricate tectonics of the coal deposit in the Jiu Valley makes this coal very difficult to mine by highly efficient mining methods. This complex tectonics is supplemented by the methane emissions, a strong coal tendency to self/ignition, and a diminished stability of roof and floor rocks, aspects that have led to the occurrence of technical accidents. This paper presents the geomechanical characteristics of the surrounding rocks and of coal from beds 3 and 5 as well the geometrical elements of this mining method the height of the coal bed the width of the strip, the method used to remove the coal. There has also been determined coal sliding degree, the angle of coal dislodging, the angle of the natural slope, the length of the caving in and the relation between the length of the caving in and the height of the coal bed.
机译：为了提高采矿效率并获得每吨提取煤的低成本，在过去几年中，厚煤层的破坏已被广泛使用。该方法在减少必要的预备运营和减少每吨提取煤的最终成本的减少，提供技术和经济指数的增长。九谷煤矿矿床的复杂构造，通过高效采矿方法使这座煤炭非常难以挖掘。这种复杂的构造由甲烷排放量补充，煤炭的强烈煤炭倾向，以及屋顶和地板岩石的稳定性，这导致了技术事故的发生。本文介绍了周围岩石和煤层的地质力学特性，也是该采矿方法的几何元素，煤层的高度条带的宽度，用于去除煤的方法。还有确定的煤滑动度，煤的角度脱臼，自然斜坡的角度，洞穴的长度以及煤层的洞穴长度与煤层的高度之间的关系。

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