基于突变理论与SVCDE的抽蓄电站地下厂房围岩稳定监测  

Stability monitoring of surrounding rock of underground powerhouse for pumped storage power station based on catastrophe theory and SVCDE

作　　者：李本良 王震洲 童涛 黄仕鑫 杨小光 王彦兵 陈曦 肖诗荣[4] LI Benliang;WANG Zhenzhou;TONG Tao;HUANG Shixin;YANG Xiaoguang;WANG Yanbing;CHEN Xi;XIAO Shirong(State Grid Economic and Technological Research Institute Co.,Ltd.,Beijing 102209,China;Hubei Anyuan Safety and Environmental Protection Technology Co.,Ltd.,Wuhan 430040,Hubei,China;State Grid Hubei Electric Power Economic Research Institute,Wuhan 430077,Hubei,China;College of Civil Engineering&Architecture,China Three Gorges University,Yichang 443002,Hubei,China)

机构地区：[1]国网经济技术研究院有限公司,北京102209 [2]湖北安源安全环保科技有限公司,湖北武汉430040 [3]国网湖北省电力有限公司经济技术研究院,湖北武汉430077 [4]三峡大学土木与建筑学院,湖北宜昌443002

出　　处：《水利水电技术(中英文)》2024年第S2期490-496,共7页Water Resources and Hydropower Engineering

基　　金：国家电网公司总部科技项目“抽水蓄能电站地下厂房智能化建造关键技术研究”(5200-202322135A-1-1-ZN)

摘　　要：针对抽蓄电站地下厂房围岩稳定性监测范围广、信息提取不全的问题,提出一种基于突变理论和变尺度复合散布熵(scale-variable composite dispersion entropy, SVCDE)的围岩稳定监测方法。首先,对围岩位移序列进行拟合,推求其非线性动力模型;其次,基于突变理论,建立围岩稳定性判别规则;最后,利用所设计的SVCDE方法,对围岩不同测点变形位移数据进行信息融合,提取整体特征,进而建立一条基于SVCDE的稳定性预警线。试验结果表明,所提方法可实现多通道围岩位移数据信息融合,有效提取变形特征值,进而完成基于SVCDE的围岩稳定性在线监测,对保障厂房施工安全具有重要意义。Aiming at the problems of wide monitoring range and incomplete information extraction of surrounding rock stability of underground powerhouse for pumped storage power station,a stability monitoring method of surrounding rock based on catastrophe theory and scale-variable composite dispersion entropy(SVCDE)is proposed.Firstly,the displacement sequence of surrounding rock is fitted and its nonlinear dynamic model is deduced.Subsequently,to judge the stability of surrounding rock,a corresponding rule is established by the catastrophe theory.Finally,with the developed SVCDE method,the deformation data of different measuring points can be integrated to extract the overall features.On this foundation,a stability early warning line based on SVCDE is established.The corresponding experimental result indicate that the developed method contributes to the integration of multi-channel data and the extraction of deformation characteristics,and realizes the online monitoring of surrounding rock stability based on SVCDE.Consequently,the proposed method is of great significance to ensure the safety for the construction of underground powerhouse.

关 键 词：抽蓄电站 地下厂房 围岩稳定监测 突变理论 SVCDE 

分 类 号：TV734.1[水利工程—水利水电工程]