摘要
引入三维复杂网络理论,将复杂的群体危岩失稳破坏抽象为复杂网络的崩溃,用复杂网络分析群体危岩的空间结构,通过对复杂网络节点拓扑特性的分析,利用复杂网络的节点重要度概念定义群体危岩中块体的重要性,从而确定出群体危岩的关键块体;建立基于关键块体稳定性系数的群体危岩稳定性的指标,消除主观因素带来的影响,可确定群体性崩塌的起崩位置。基于复杂网络方法和规范推荐的二维极限平衡法的计算结果表明,规范推荐公式的相对误差为128.41%,所提方法的相对误差为9.47%,可更好反应群体危岩主控结构面的三维非贯通特性和周边岩体约束的影响,计算精度明显提高,为实际工程中合理、高效地治理群体危岩提供一种新思路。
the instability failure of rock mass assemblages as a collapse within a complex network,and by analyzing the spatial structure of these assemblages through complex networks,the significance of individual blocks is determined using the concept of node importance from network topology,that can enable the identification of key blocks within the assemblage.A stability index for the entire rock mass is then established based on the stability coefficient of these key blocks,which can minimize the subjective bias and help to identify the initial failure location during a collective collapse.Comparative results between the proposed complex network method and the limit equilibrium method recommended by standards show that the standard method has a relative error of 128.41%,and in contrast,the proposed method achieves a relative error of 9.47%,indicating that the complex network approach can more accurately capture the three-dimensional discontinuous nature of the dominant structural surfaces and the constraints from the surrounding rock mass,leading to notably greater computational accuracy.The study presents a new perspective on the rational and efficient management of dangerous rock mass assemblages in practical engineering applications.
作者
苏国韶
张润寰
刘友能
王钧沐
SU Guoshao;ZHANG Runhuan;LIU Youneng;WANG Junmu(School of Civil and Architectural Engineering,Guangxi University,Nanning 530004,Guangxi,China;Key Laboratory of Engineering Disaster Prevention and Structural Safety of Ministry of Education,Guangxi University,Nanning 530004,Guangxi,China;Guangxi Karst Area Water Security and Intelligent Regulation Engineering Research Center,Guangxi University,Nanning 530004,Guangxi,China)
出处
《水力发电》
2026年第3期21-28,37,共9页
Water Power
基金
国家自然科学基金资助项目(52169021)
广西科技基地和人才专项项目(桂科AD23026203)
中国科学院武汉岩土力学研究所岩土力学与工程安全全国重点实验室开放基金课题(SKLGME-023024)。
关键词
危岩体
岩石崩塌
稳定性分析
关键块体
复杂网络
稳定系数
dangerous rock mass
rockfall
stability analysis
key block
complex network
stability coefficient
