邻近发电洞影响下大水头导流泄洪洞安全状态评价  

Safety Evaluation of High-Head Diversion Tunnels Influenced by Adjacent Power Tunnels

作　　者：于茂 隋世军[1] YU Mao;SUI Shijun(China Water Resources Beifang Investigation,Design and Research Co.Ltd.,Tianjin 300222)

机构地区：[1]中水北方勘测设计研究有限责任公司,天津300222

出　　处：《水利水电工程设计》2025年第2期20-25,共6页Design of Water Resources & Hydroelectric Engineering

基　　金：国家重点研发计划项目(2022YFC3005605)。

摘　　要：导流泄洪洞在水利枢纽工程中承担施工期导流和运行期泄洪的重要任务,是保障水库防洪任务正常发挥的重要建筑物。但在枢纽工程设计中,导流泄洪洞常常与其他相关建筑物存在交叉或邻近关系,往往对隧洞围岩和衬砌结构稳定造成不同程度的影响。依托工程实例,采用非线性有限元方法,对受邻近水力发电洞影响的大水头导流泄洪洞围岩和衬砌进行变形和应力状态的影响分析,对隧洞支护体系进行了系统安全评价,为隧洞的施工运行期安全运行提供重要保证,也为类似工程的设计提供参考。Diversion tunnel is a crucial component in water conservancy projects,serving the dual functions of water diversion during construction and flood discharge during operation.It plays an essential role in ensuring the flood control capabilities of reservoirs.However,in many cases,diversion tunnels intersect with or are situated near other structures,which can significantly impact the stability of surrounding rock masses and tunnel lining structures.This study,based on a specific engineering case,utilizes a nonlinear finite element method to analyze the deformation and stress conditions of the surrounding rock and lining in a high-head diversion tunnel influenced by adjacent hydraulic power tunnels.A systematic safety evaluation of the tunnel support system is conducted,providing crucial assurances for the safe operation of the tunnel during both construction and operation phases.The findings provide valuable insights and references for the design and safety evaluation of similar projects.

关 键 词：导流泄洪洞 大水头 邻近影响 衬砌结构 安全评价 

分 类 号：TV551[水利工程—水利水电工程]