高寒区混凝土坝长间歇薄层浇筑越冬保温方法  

Over-winter insulation method for long interval thin placing layer of concrete dam in alpine region

作　　者：张国新[1] 刘茂军 李松辉[1] 王程鹏 张龑[1] 张晓光 

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]丰满大坝重建工程建设局,吉林吉林132108

出　　处：《水利水电技术》2016年第6期25-28,共4页Water Resources and Hydropower Engineering

基　　金：国家"973"计划课题(2013CB035904;2013CB036406);国家"十二五"科技支撑计划课题(SQ2013BAJY4138B02);中国水科院科研专项1513

摘　　要：以地处东北严寒地区某混凝土坝施工为例,针对高寒地区的气候特点提出了一种混凝土越冬保温的新方法——借助于天然降雪或人工降雪的保温方法,即首先在越冬层面覆盖较少的保温被,然后覆盖一定厚度的雪层。给出了混凝土越冬保温的计算方法并通过计算论证了保温效果的显著性,可大大节省工程投资,为高寒地区混凝土坝施工越冬保温提供借鉴。By taking the costruction of a concrete dam in an alpine region of the northest China as the study case, a new method of over-winter concrete insuhion for the climate features of alpine region, i.e. a method by means of naural snow or the artificial snow, is proposed herein, by which the over-winter concrete placing layer is to be covered by less insulation quilt at first, and then is to be covered by a snow layer with a certain thickness. The calculation method for the over-winter insulation of concrete is finally given out and the significance of the insulation effect is verified through the relevent calculation ; which can not only largely save project investment, but can also provide a paradigm in the sector for the over-winter insulation for the construction of con- crete dam in alpine region.

关 键 词：高寒地区 混凝土坝施工 防裂 越冬保温 

分 类 号：TV544.921[水利工程—水利水电工程]