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本文依据广州抽水蓄能电站地下厂房区4个钻孔不同深度的地应力实测资料,介绍了4个二维和1个三维地应力场的分析成果。通过这些分析计算,对该地区地应力场变化规律、地质构造应力场主压应力方向、地下厂房处地应力状态等有了比较深入的认识。并采用有限元和应力回归分析方法,对自重应力场和地质构造应力场,建立了比较符合实际的力学模型,进行了模拟计算。
In this paper, based on the measured data of 4 different borehole depths in the underground workshop area of Guangzhou Pumped Storage Power Station, the results of 4 2D and 1 3D geostress fields are introduced. Through these analysis and calculation, we have a deeper understanding of the variation rules of the in-situ stress field, the direction of the principal compressive stress in the stress field of the geological tectonics and the stress state of the underground powerhouse. By using finite element method and stress regression analysis, a more realistic mechanical model is established for the self-weighting stress field and the geological tectonic stress field, and the simulation calculation is carried out.