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首页> 外文期刊>Journal of geophysics and engineering >Mining-induced stress distribution of the working face in a kilometer-deep coal mine-a case study in Tangshan coal mine-a case study in Tangshan coal mine
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Mining-induced stress distribution of the working face in a kilometer-deep coal mine-a case study in Tangshan coal mine-a case study in Tangshan coal mine

机译：一公里深煤矿的采矿诱导的应力分布 - 唐山煤矿的案例研究 - 以唐山煤矿为例

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摘要

Because of the large original stress in deep mining, compared with shallow mining, it is more likely to cause the occurrence of dynamic disasters such as rock burst, coal and gas outburst by the mining-induced stress concentration. Therefore, it is of great significance to master mining-induced stress distribution in deep mining. Mining-induced stress distribution of the working face in a kilometer-deep coal mine has been studied in this paper. The paper presents a study incorporating field monitoring, numerical simulation and theoretical analysis. Through analysis of field measured results, the following conclusions are made. For the area of the working face whose upward side and lateral direction are both unexcavated, the influence scope of advancing abutment pressure is 73 m; for another area whose upward side and lateral direction are both excavated, the influence scope is 64 m; for the area whose upward side is excavated and whose lateral direction is unexcavated, the influence scope is 31 m. Meanwhile, according to roadway displacement deformation monitoring, the influence scopes of advancing abutment pressure of the above areas are respectively 70 m, 68 m and 45 m, consistent with field stress monitoring results. In addition, the results obtained by FLAC(3D) numerical simulation fits relatively well with field measured results. In the end, combining with theoretical analysis, it determines the high stress concentration zone of the working face, provides a decision-making basis for taking advanced pressure relief measures and offers a reference for the safe mining of both follow-up working faces and other working faces with similar conditions.
机译：由于深矿井的巨大压力大，与浅采矿相比，通过采矿诱导的应力浓度，更有可能导致岩爆，煤和气体突出的动态灾害发生。因此，对深处采矿诱导的应力分布具有重要意义。本文研究了一公里深煤矿的采矿诱导的应力分布。本文介绍了一种研究，包括现场监测，数值模拟和理论分析。通过分析现场测量结果，进行了以下结论。对于向上侧和横向方向的工作面的面积既未透露，推进邻接压力的影响范围为73米;对于向上侧和横向挖掘的另一个区域，影响范围为64米;对于向上侧被挖掘并且其横向未被漏出的区域，影响范围为31米。同时，根据道路位移变形监测，上述区域的推进压力的影响范围分别为70米，68米和45米，与现场应力监测结果一致。另外，通过FLAC（3D）数值模拟获得的结果与现场测量结果相比拟合。最后，结合理论分析，它决定了工作面的高应力集中区，为采取先进的压力释放措施提供了决策基础，并为两种后续工作面和其他的安全开采提供了参考工作面部有类似条件。

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