煤田地质与勘探2023，Vol.51Issue(11)：65-73,9.DOI:10.12363/issn.1001-1986.23.01.0052
基于复杂地质体精细刻画的隧洞涌水量动态预测方法
Dynamic prediction method of tunnel water inflow based on detailed depiction of complex geological bodies
摘要
Abstract
It is a challenge to accurately characterize the irregular geological bodies and underground structures such as inclined faults and inclined tunnels during the numerical simulation of tunnel water inflow prediction,and the prediction generally assumes that the tunnel excavation is completed instantaneously without considering the construction progress.A dynamic prediction method for tunnel water inflow based on precise characterization of complex geometric bodies was proposed by addressing the non-self-intersection and watertight issues required in the coupling process of three-di-mensional(3D)geological models and 3D groundwater numerical models.Specifically,a sealed boundary interface of inclined tunnels,shafts,inclined faults and irregular geological bodies is firstly constructed in 3D geological modeling software.The inclined tunnels and shafts need to be segmented according to the excavation progress,and then a 3D geo-logical model is established.Subsequently,the 3D geological model data is imported into the 3D groundwater simula-tion software,Feflow,in ml file format.Then the fully unstructured grid function of Feflow is used to achieve the fine gridding of the complex geometric bodies.Finally,the tunnel boundary is set as a third type boundary based on the de-tailed gridding of complex geometric body in Feflow.Thus,tunnel water inflow can be predicted dynamically by setting the exchange coefficients and reference water heads with consideration to the tunnel excavation progress and construc-tion techniques(such as grouting,lining,etc.).The method is applied to the calculation of water inflow in inclined tun-nels and shafts in an underground project,with good practical effect.关键词
隧洞涌水量/倾斜断层/三维地质模型/完全非结构化网格/水量动态预测Key words
tunnel water inflow/inclined fault/3D geological model/fully unstructured grids/water inflow dynamic pre-diction分类
天文与地球科学引用本文复制引用
杜亚军,李清波,万伟锋,杨风威,李亚哲,钱会..基于复杂地质体精细刻画的隧洞涌水量动态预测方法[J].煤田地质与勘探,2023,51(11):65-73,9.基金项目
水利部重大科技项目(SKS-2022062) （SKS-2022062）
河南省重点研发与推广专项科技攻关项目(212102311150) （212102311150）
黄河勘测规划设计研究院有限公司自主研发项目(2019BSHZL03,2020-ky02,2020-ky15) （2019BSHZL03,2020-ky02,2020-ky15）
