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| MgO微膨胀混凝土筑坝技术述评 | |
| 引用本文： | 李金友,苏怀智,储冬冬.MgO微膨胀混凝土筑坝技术述评[J].水电能源科学,2012,30(6):78-81. |
| 作者姓名： | 李金友 苏怀智 储冬冬 |
| 作者单位： | 1. 河海大学 水文水资源与水利工程科学国家重点实验室,江苏南京210098;河海大学 水利水电学院,江苏南京210098 2. 河海大学 水文水资源与水利工程科学国家重点实验室,江苏南京210098;河海大学 水利水电学院,江苏南京210098;河海大学 水资源高效利用与工程安全国家工程研究中心,江苏南京210098 3. 江苏省水利科学研究院,江苏南京,210017 |
| 基金项目： | 国家自然科学基金资助项目（51179066，51139001，51079086）；新世纪优秀人才支持计划基金资助项目（NCET-10-0359）；国家重点实验室专项经费资助项目（2009586912）；中央高校基本科研业务费专项基金资助项目（2010B01414）；江苏高校优势学科建设工程基金资助项目（水利工程）（YS11001） |
| 摘 要： | 外掺MgO微膨胀混凝土坝体防裂技术可有效补偿坝体在降温期的拉应力。从MgO应力补偿的基本原理出发,介绍了MgO混凝土材料性能、膨胀模型、施工方法及安全监测等方面的研究现状,分析了MgO微膨胀混凝土筑坝技术在推广应用中存在的突出问题,从MgO混凝土高掺量的体积安定性、考虑多因素的精确膨胀模型、外掺MgO与其他温控措施的配套使用等方面探讨了亟待攻克的技术难点和发展方向。 |
| 关 键 词： | MgO混凝土 筑坝工艺 温控措施 防裂技术 综述 |
Review on Dam Construction Technology with MgO Micro-expansion Concrete |
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| LI Jinyou,SU Huaizhi and CHU Dongdong.Review on Dam Construction Technology with MgO Micro-expansion Concrete[J].International Journal Hydroelectric Energy,2012,30(6):78-81. | |
| Authors: | LI Jinyou SU Huaizhi and CHU Dongdong |
| Affiliation: | 1.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210098,China;2.College of Water Conservancy and Hydropower,Hohai University,Nanjing 210098,China;3.National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety,Hohai University,Nanjing 210098,China;4.Jiangsu Hydraulic Research Institute,Nanjing 210017,China) |
| Abstract: | The crack prevention technique of the mixed MgO micro-expansion concrete dam can effectively compensate for the tensile stress during the cooling period.Based on the principle of stress compensation with MgO,current researches on properties of MgO concrete material,expansion models,dam construction method and safety monitoring are presented.At the same time,some key issues are discussed about promoting dam construction technology with MgO micro-expansion concrete.Finally,a number of pressing issues and development direction on dam construction technology are discussed,which includes the aspects of volume stability of high added MgO concrete,accurate expansion model considering multi-factors and combination of conventional temperature control measures with technology of mixed MgO. |
| Keywords: | MgO concrete dam construction technology temperature control measures crack prevention technique review |
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