水工隧洞围岩稳定可靠度计算的智能优化算法及其应用  

An Intelligent Optimization Algorithm for Stability Reliability Calculation of Surrounding Rock of Hydraulic Tunnels and Its Application

作　　者：李梦瑶 王刚[1] 马震岳[1] 康飞[1] LI Meng-yao;WANG Gang;MA Zhen-yue;KANG Fei(School of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学建设工程学院,辽宁大连116024

出　　处：《水电能源科学》2024年第7期142-146,共5页Water Resources and Power

基　　金：国家自然科学基金项目(52079022,51979027);国家重点研发计划(2022YFB4703404)。

摘　　要：深埋水工隧洞围岩稳定的主要表现之一是岩体变形或应变能够控制在允许范围内,而隧洞设计中围岩变形或应变的求解一般可采用收敛约束法,但该方法对围岩变形的求解隐含在非线性方程组中,难以运用传统的可靠度算法进行计算。因此,根据可靠指标的几何涵义,将可靠度计算转化为约束优化问题的求解,提出了基于成吉思汗鲨鱼优化器的深埋水工隧洞围岩稳定可靠度计算方法,并对某深埋水工隧洞进行了验证分析。结果表明,该方法对隐式非线性功能函数的可靠度计算问题具有很好的适用性,在计算效率和计算准确性之间能够达到较好的平衡,可为深埋水工隧洞结构设计和围岩稳定可靠性评价提供技术支撑。One of the manifestations of the stability of the surrounding rock in deep-buried hydraulic tunnels is that the deformation or strain of the rock mass can be controlled within the permissible limits.The convergence-confinement method is used to solve the deformation of surrounding rock,but the deformation solved by this method is implied in the nonlinear equations,which makes it difficult to apply the traditional reliability calculation methods to solve.In this paper,based on the geometric meaning of the reliability index,the reliability calculation problem was transformed into a constrained optimization problem.And then a reliability calculation method based on the Genghis Khan Shark optimizer for the reliability of the stability the surrounding rock of deep-buried hydraulic tunnels was proposed.Through the analysis of a practical deep-buried hydraulic tunnel,the results show that the proposed method has good applicability to the problem of reliability calculation of implicit nonlinear performance functions,and can achieve a good balance between computational efficiency and accuracy.The proposed method can provide a technical support for the structural design of deep-buried hydraulic tunnels and the evaluation of the reliability of the stability of the surrounding rock of tunnels.

关 键 词：水工隧洞 围岩稳定 可靠度 收敛约束法 成吉思汗鲨鱼优化器 

分 类 号：TV672.1[水利工程—水利水电工程]