长江科学院院报2025，Vol.42Issue(4)：149-158,10.DOI:10.11988/ckyyb.20231376
地下水封洞库施工期洞室围岩力学参数智能反演
Intelligent Inversion of Mechanical Parameters of Surrounding Rock of Underground Water-Sealed Storage Cavern During Construction
摘要
Abstract
Reasonably and accurately determining the mechanical parameters of surrounding rock is crucial for the stability analysis of surrounding rock and the design of supporting structures during the construction of underground water-sealed storage caverns.Based on the engineering geological characteristics of underground water-sealed stor-age caverns,an intelligent inversion method for the mechanical parameters of surrounding rock during construction is proposed for the equivalent continuous medium model.First,the constitutive model of the cavern rock mass is de-termined via laboratory and numerical tests.Then,the mechanical parameters of the constitutive model are esti-mated using the Hoek-Brown strength criterion and other methods,and the sensitivity of each parameter to the de-formation and relaxation of the surrounding rock is analyzed.Based on these analyses,an orthogonal test scheme for the parameters to be inverted is designed.Finally,an intelligent inversion model for the mechanical parameters of the surrounding rock is constructed using samples obtained from numerical simulations and an evolutionary neural network model.Comprehensively estimating the initial value ranges of the mechanical parameters of the surrounding rock for different classes of rock mass basic quality can avoid large deviations in inversion results caused by the wide optimization range of intelligent algorithms.Sensitivity analysis of the mechanical parameters to the deformation and relaxation of the surrounding rock can reduce the number of inversion parameters.The proposed intelligent in-version method is applied to a typical underground water-sealed storage cavern project in Shandong Province.Re-sults show that the relative errors of the settlement of the peripheral rock vault,the maximum displacement of the cavern circumference,the internal deformation,and the average depth of relaxation are all less than 10％,meeting the precision requirements of engineering applications.Therefore,the proposed intelligent inversion method exhibits high feasibility and reliability through practical application and can serve as a reference for similar projects.关键词
地下水封洞库/围岩稳定性/等效连续介质围岩模型/力学参数/Hoek-Brown强度准则/智能反演/岩体本构模型Key words
underground water-sealed storage cavern/stability of surrounding rock/equivalent continuous medium model for surrounding rock/mechanical parameters/Hoek-Brown strength criterion/intelligent inver-sion/constitutive model for rock mass分类
天文与地球科学引用本文复制引用
曹洋兵,陈可辛,黄月,李尧,张遂,黄真萍..地下水封洞库施工期洞室围岩力学参数智能反演[J].长江科学院院报,2025,42(4):149-158,10.基金项目
福建省自然科学基金项目(2023J01424) （2023J01424）
贵州省高层次创新型人才项目(黔科合平台人才[2020]6019-2号) （黔科合平台人才[2020]6019-2号）
