山东打渔张灌区地下水位高,毛管水上升强烈,水分向冻结面迁移量大,渠道衬砌冻胀破坏严重,因而在进行衬砌渠道防渗的同时,还必须考虑防冻害问题。1985年冬由胜利油田投资,打渔张引黄管理局委托山东水科所进行了这一课题的试验。至1988年春,经过3个冬春的连续观测,按期完成任务,提出了成果。于今年7月在山东东营市通过了鉴定。他们是利用聚苯乙烯板做保温垫层,作为防止衬砌渠道冻胀破坏的措施的有效措施的。采用这一措施,防止了冻胀破 In Shandong Zhangyu catchment, the groundwater level is high, the capillary water rises strongly, the water migration to the frozen surface is large, and the frost heave of the channel lining is seriously damaged. Therefore, while preventing the seepage of lining channels, the problem of frost damage must also be considered. The winter of 1985 by the Shengli Oilfield investment, fishery Zhangyin Bureau of Shandong entrusted entrusted Shandong Water Branch conducted a test of this issue. By the spring of 1988, after three consecutive observations in winter and spring, the mission was completed on schedule and the results were presented. In July this year in Dongying City, Shandong passed the appraisal. They are the use of polystyrene insulation board as a cushion, as a preventive measures to prevent damage to the lining channel frost damage measures. Using this measure to prevent the freezing burst