渠系建筑物的冻害防治

Prevention and Control of Cold Damage for Canal System

我国北方地区渠系建筑物遭受冻胀破坏的情况相当普遍，其破坏形式有垂直变位和水平变位。产生冻胀的原因可归纳为低温、水份、土质、压力等因素。防治冻害的措施除在结构方面考虑外，主要从消除或消减冻胀的成因方面着手。文章着重介绍了防治冻害的具体措施。

The canal system generally suffers from frozen heaving in China's north. The form of damage mainly is vertical dislocation and horizontal displacement. To sum up, the elements for the heaving are low temperature, moisture, soil quality and pressure etc. To prevent the damage, it must proceed with removing and decreasing the cause of heaving besides some measures of engineering structure. In this paper, the specific measures are emphatically introduced.