人民珠江2024，Vol.45Issue(1)：103-113,11.DOI:10.3969/j.issn.1001-9235.2024.01.010
基于GA-GRNN地应力场反演的超长深埋隧洞围岩稳定性研究
Research on Stability of Utralong and Deep-Buried Tunnel Surrounding Rocks Based on GA-GRNN Geostress Field Inversion
摘要
Abstract
According to the geological condition and measured geostress data of the utralong-distance water diversion project,a 3D inversion calculation model of the initial geostress field of the water diversion route was established.The initial geostress field of the water diversion route was exactly simulated through the method of generalized regression neural network(GRNN)optimized by genetic algorithms(GA-GRNN).Based on the initial geostress field,the geostress of the water diversion route was partitioned,and the stability of the tunnel surrounding rocks in typical sections was analyzed.The research results show that the geostress field is bounded by Duolong gully fault belt,and the west of the fault belt is a horizontal tectonic stress area.Extremely high and high geostress areas are distributed in geological structural belts where attention should be paid to rock bursts caused by stress release.The east of the Duolong gully fault belt is the self-weight stress area,and the moderate geostress area is distributed here.The stability of the surrounding rocks here is relatively good.关键词
初始地应力/神经网络/遗传算法/围岩稳定Key words
initial geostress/neural networks/genetic algorithms/stability of surrounding rocks分类
建筑与水利引用本文复制引用
郭冲,王翰盛,邓伟杰,赵顺利,杜卫长..基于GA-GRNN地应力场反演的超长深埋隧洞围岩稳定性研究[J].人民珠江,2024,45(1):103-113,11.基金项目
国家重点研发计划(2019YFC1509905) （2019YFC1509905）
黄河勘测规划设计研究院有限公司自主研究开发项目(2019-ky08) （2019-ky08）
江河工程检验检测有限公司自主研究开发项目(JH-ky04-2022) （JH-ky04-2022）
