黄河下游灌区混凝土衬砌渠道防冻胀破坏措施研究

黄河下游属季节性冻土地区，由于基土的冻胀变形而引起的衬砌渠道和水工建筑物的冻胀破坏问题普遍存在。开展凌期引黄，由于延长了水利工程在低温下的使用期限，无疑将会使这一问题变得更加严重。为此，选择山东省引黄济青工程、韩墩和潘庄等灌区为典型，开展实地调查、实验、研究衬砌渠道的冻胀破坏问题和保护措施。首先分析了冻胀破坏的内外在机理，分析了造成黄河下游引黄灌区水利工程冻胀破坏的各种影响因素，在此基础上，针对衬砌渠道冻胀破坏的特点，提出不同的保护方案。实践证明，本项研究成果对黄河下游引黄灌区规划、建设、运行管理具有十分重要的应用价值，对广大北方灌区也具有重要参考价值。

Control Measures of Concrete Lined Canal Destroy Caused by Frozen and Expansion in the Irrigated Areas of the Downstream of the Yellow River

The downstream plain of the Yellow River belongs to seasonal frozen land.The problems of lined canal and hydraulic structures destroy caused by frozen foundation deformation happen frequently.The winter water diversion from the Yellow River,due to the lengthening operation term under low temperature,no doubt,deteriorates the problems.Therefore,taking the Project of Yellow River Water Diversion to Qingdao,Handun and Panzhuang Irrigation Areas as examples,through investigation and experiment,the paper studied...