基于智能温控的混凝土坝个性化温控优化方法研究  

Intelligent temperature control-based study on individualized optimization scheme for temperature control of concrete dam

作　　者：张磊[1,2,3] 王建[4] 范瑞朋[5] 刘毅[1,2,3] 张国新[1,2,3] ZHANG Lei;WANG Jian;FAN Ruipeng;LIU Yi;ZHANG Guoxin(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Key Laboratory of Construction and Safety of Hydraulic Engineering of Ministry of Water Resources,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Department of Structure and Materials,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Xinjiang Irtysh River Basin Development Administrative Bureau,Urumchi 830002,Xinjiang,China;China Water Resources Beifang Investigation,Design&Research Co.Ltd.,Tianjin 300222,China)

机构地区：[1]中国水利水电科学研究院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水利部水工程建设与安全重点实验室,北京100038 [3]中国水利水电科学研究院结构材料研究所,北京100038 [4]新疆额尔齐斯河流域开发工程建设管理局,新疆乌鲁木齐830002 [5]中水北方勘测设计研究有限责任公司,天津300222

出　　处：《水利水电技术（中英文）》2021年第8期11-16,共6页Water Resources and Hydropower Engineering

基　　金：国家重点研发计划项目(2018YFC0406703);国家自然科学基金资助项目(51779277);中国水科院科研专项(SS0145B712017,SS0145B612017,SS0145B392016);流域水循环模拟与调控国家重点实验室资助项目(SKL2020ZY10,SS0112B102016);中国华能集团科技项目(HNKJ20-H21TB)。

摘　　要：由于以往混凝土坝的温控标准和措施制定主要是从质量角度考虑,对经济方面的考虑涉及不多,因此需要从质量达标和经济最优两方面探讨混凝土坝防裂的个性化温控优化方法。首先,通过建立全环节温控指标关联模型和调控方法,以建立的各环节经济关系模型为约束函数进行多约束求解,实现温控标准的全局优化。然后,将优化的各温控指标以及相应的措施方案纳入到智能温控系统,进行温控施工过程的评价、预警报警和反馈调控。最后,基于提出的智能温控全环节调控方法,对目前正在实施的某工程智能温控系统开展了试验性应用测试。结果表明:(1)应适当提高机口温度,浇筑过程中,应加强仓面喷雾动态控制,以使温度控制的单位成本最低;(2)升温阶段加大通水流量至3 m^(3)/s左右,其控制最高温度成本也较低。此温控防裂设计优化方法与智能温控技术相结合的模式,以达到经济最优和质量达标为总体目标,同工程设计和施工高度融合,非常有利于混凝土坝温控的实施效果。As the previous concrete temperature control criteria and measures are mainly made from the aspect of concrete quality without more considerations on the aspect of economy,an individualized method for the optimization of the temperature control for the crack prevention of concrete dam is discussed herein from the aspects of quality compliance and economic(cost)optimum.Through establishing the relevant whole link temperature control index correlation model and control method,the economic relationship models of all the links are taken as the constraint functions,and then the multi-constraint solution is made to realize the global optimization of the temperature control criteria.Finally,all the optimized temperature indexes as well as the corresponding measures are incorporated into the intelligent temperature control system to carry out the evaluation,early-warning and feedback control of the process of the temperature control construction.Based on the method of the whole link control of the intelligent temperature control proposed herein,a relevant experimental application test is made on the intelligent temperature control system being executed at present for a project.The result shows that the temperature at the outlet of the concrete placer is necessary to be properly raised,while the dynamic control of the spray on the concrete placing face is necessary to be strengthened as well,so as to minimize the unit cost of temperature control.Otherwise,the water cooling flow rate during the temperature-rise period is necessary to be increased to about 3 m^(3)/s,of which the control cost for the maximum temperature is also lower.Through highly integrating the engineering design with construction,this mode of combining the optimization method of the temperature control and crack prevention with the intelligent temperature control technique for achieving the quality compliance and economic(cost)optimum as the general target is quite favorable to the implementation effect of the temperature control of the concrete dam.

关 键 词：混凝土坝 温控防裂 温控标准 智能温控 经济最优 

分 类 号：TV544.91[水利工程—水利水电工程]