高寒区混凝土坝长期运行安全监控预警方法  

Safety monitoring and early warning method for long-term operation of concrete dam in alpine region

作　　者：雷峥琦 刘毅 朱振泱[1] 周秋景 LEI Zhengqi;LIU Yi;ZHU Zhenyang;ZHOU Qiujing(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,Beijing 100038,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China)

机构地区：[1]流域水循环模拟与调控国家重点实验室,北京100038 [2]中国水利水电科学研究院,北京100038

出　　处：《水利水电技术（中英文）》2022年第3期70-77,共8页Water Resources and Hydropower Engineering

基　　金：国家重点研发计划项目(2018YFC0406705);国家自然科学基金项目(51779277);中国水科院科研专项(SS0145B612017,SS0145B392016);流域水循环模拟与调控国家重点实验室自主研究课题(SKL2020ZY10)。

摘　　要：高寒区气候条件恶劣,混凝土坝的长期运行面临诸多安全风险。为此,结合高寒区的气象和水文特点,分析了高寒区混凝土坝运行中面临的不利因素,基于安全监测和有限元仿真,构建了高寒区混凝土坝运行期实时仿真系统,实现了大坝中短期变形的高精度预测。在此基础上,基于混凝土表面散热系数反演方法、数学统计模型和非线性有限元安全度理论,依照危害等级,构建了包含坝体表面保温监控、变形异常监控、结构破坏监控的多层级监控预警体系,为进一步构建高寒区混凝土坝运行安全监控系统提供了理论和技术支撑。In combination with the meteorological and hydrological characteristics of alpine region, the unfavorable factors faced by the operation of the concrete dam in alpine region are analyzed herein. Based on safety monitoring and finite element simulation, a real-time simulation system for the operation period of concrete dam in alpine region is built up, and then the high-precision prediction of mid-short term deformation of the dam is realized. On the basis of this, a multi-level monitoring and early warning system including the insulation monitoring of dam surface, deformation anomaly monitoring and structural damage monitoring is established according to the hazard levels with the inversion method of heat dissipation coefficient of concrete surface, mathematical statistical model and nonlinear finite element safety degree theory, which provides a theoretical and technical support for further building up the operation safety monitoring system of concrete dam in alpine region.

关 键 词：高寒复杂条件 混凝土坝 表面保温 实时仿真 安全监控 

分 类 号：TV213.4[水利工程—水文学及水资源]