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首页> 外文期刊>Natural Hazards >Grout injection into bed separation to control surface subsidence during longwall mining under villages: case study of Liudian coal mine, China
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Grout injection into bed separation to control surface subsidence during longwall mining under villages: case study of Liudian coal mine, China

机译：村庄下长壁开采中向层分离中注浆注浆以控制地表沉陷：以中国六店煤矿为例

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摘要

Surface subsidence can cause many environmental problems and hazards (including loss of land area and damage to buildings), and such hazards are particularly serious in coal mining districts. Injecting grout into the bed separation in the overburden has been proposed as an effective control measure against surface subsidence during longwall mining. However, no field trials of this technique have been implemented in mines under villages in China, and thus, its ability to control subsidence in such areas has yet to be demonstrated. In this study, field trials using this technique were carried out during longwall mining under villages in the Liudian coal mine, China. The maximum surface subsidence observed after the extraction was only 0.298 m, which accounts for 10 % of the mining height and is 79 % less than the predicted subsidence. Moreover, no damage occurred to the village buildings either during or after extraction and these buildings remain stable. Thus, this study represents the first successful attempt to control surface subsidence under villages in China using grout injection during longwall mining
机译：地面沉降会引起许多环境问题和危害（包括土地面积损失和建筑物损坏），这种危害在煤矿区尤为严重。有人建议在上覆岩层的层间注浆中注入水泥浆，以作为防止长壁开采过程中地面沉降的有效控制措施。但是，该技术尚未在中国乡村的矿井中进行现场试验，因此，在这种地区控制沉降的能力尚未得到证实。在这项研究中，使用这种技术的野外试验是在中国六店煤矿村下的长壁开采过程中进行的。开采后观察到的最大地面沉降仅为0.298 m，占开采高度的10％，比预计的沉降低79％。此外，在提取期间或之后，对村舍的建筑物均未造成损坏，并且这些建筑物保持稳定。因此，这项研究代表了在长壁开采过程中使用注浆法控制中国乡村下的地面沉降的首次成功尝试。

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