高温养护混凝土及衬砌结构力学特征研究现状与分析  

Research Status of Mechanical Properties of Concrete and Lining Structures Cured by High Temperature

作　　者：甘彬霖 冯旭海 宋朝阳 王恒[1,3] 赵玉明 GAN Bin-lin;FENG Xu-hai;SONG Zhao-yang;WANG Heng;ZHAO Yu-ming(Research Institute of Mine Construction,China Coal Research Institute,Beijing 100013,China;Shanghai Research Institute for Intelligent Autonomous Systems,Tongji University,Shanghai 200092,China;National Engineering Research Center of Deep Shaft Construction,Beijing 100013,China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]煤炭科学研究总院建井研究分院,北京100013 [2]同济大学上海自主智能无人系统科学中心,上海200092 [3]矿山深井建设技术国家工程研究中心,北京100013 [4]中国矿业大学深部岩土力学与地下工程国家重点实验室,徐州221116

出　　处：《科学技术与工程》2023年第29期12362-12370,共9页Science Technology and Engineering

基　　金：山东省技术创新项目(202010606024,202010606029)。

摘　　要：随着深部矿井和深长隧道的建设需要,混凝土结构面临着更加复杂的高地温环境。高温养护混凝土水化动力过程和力学特征规律与常温养护存在较大差异。概述了深部矿井和深长隧洞结构面临的高地温环境,分析了高温养护条件下混凝土水化动力过程,对高温养护混凝土力学性能演化机制和改善方法进行了综述;总结了不同高地温环境对衬砌结构黏结性能、温度场分布规律和受力特性的影响规律以及支护体系优化方法。认为高温养护混凝土水化反应机制不明确、温-湿条件耦合影响的非线性、工程研究领域和性能指标的单一性是高温养护混凝土性能演化表征及优化改性研究存在的主要问题。应加强高温养护条件下混凝土水化动力学模型的研究,建立温-湿度耦合养护条件下混凝土性能预测模型,拓展高温养护混凝土应用领域和强度等级的研究,以便更好地为高地温环境深地工程混凝土结构设计和应用提供指导。With the increasing demand for construction of deep mines and deep-long tunnels,concrete structures are faced with a more complex high geothermal environment.The hydration kinetics and mechanical characteristics of concrete cured by high temperature are different from those of normal temperature.The high ground temperature environment of deep mines and deep-long tunnels was summarized.The hydration kinetics of concrete cured by high temperature was analyzed,and also the characteristics of mechanical properties of that concrete and its optimization methods were reviewed.The law of bonding performance,temperature distribution and stress characteristics of lining structures under different high ground temperature environments were summarized,as well as its optimization methods.It is considered that the unclear hydration kinetics of concrete cured by high temperature,the nonlinearity of the coupling effect of temperature and humidity conditions,and the singleness of engineering research fields and performance indicators are the problems existing in the characterization of high temperature curing concrete performance evolution and its optimization research.The research of concrete hydration kinetics cured by high temperature should be strengthened,the prediction model of concrete performance under temperature-humidity coupling curing conditions should be established and perfected,and the application field and strength grade of high temperature curing concrete should be expanded,which of these provide guidance for the design and application of concrete structure in deep ground engineering with high ground temperature.

关 键 词：深地工程 高温养护 水化动力学 力学性能 衬砌结构 

分 类 号：TU528[建筑科学—建筑技术科学]