[关键词]
[摘要]
在地下洞室围岩稳定分析计算中,地应力研究区域较大,而测量的已知参数信息量有限,在此基础上进行的数值分析往往与实际存在一定的偏差。根据地应力实测资料及地质构造条件,基于改进的粒子群优化算法,建立了初始地应力场反演模型,反演结果与实测结果吻合较好,为进一步分析厂房区围岩的稳定性提供了参考。
[Key word]
[Abstract]
In the calculation of the stability of surrounding rock in the underground caverns, the study area of underground stress is usually large. However, the information of known parameters is limited; therefore the numerical analysis results on this basis can result in some deviations from the reality. Based on the measured data of underground stress and geological structure, and improved particle swarm optimization algorithm, an inversion model of the initial stress field was developed. The inversion results were in good agreement with the measured results, which can provide reference for the further analysis of the surrounding rock stability in the plant area.
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