根据石津灌区特点，从防渗材料、防冻胀处理、伸缩缝等3个方面选取6种不同的渠道防渗衬砌措施，采用动水法开展了渠道防渗效果田间试验，并提出了表征渠道输水损失的计算公式。通过对比分析冻融期前后6种衬砌形式的防渗效果、防冻胀效果、节水效果和投资效益，发现“现浇混凝土+保温板，树脂油膏砂浆填缝”的衬砌形式其单位长度流量损失率为0.0306/km，单位长度投资53.73万元/km，冻融期前后防渗效果没有变化可见，该渠道衬砌形式适用于石津灌区，并可推广至整个华北地区渠道防渗工程应用。

Six types of anti-seepage canal lining forms were selected from the aspects of impervious material, anti-frost heaving, and dilatation joint in the Shijin Irrigation District. Dynamic water method was used to conduct the field tests on the effects of canal anti-seepage, and a calculation formula was proposed to characterize the water loss in canal conveyance. Through the comparisons of the anti-seepage effects, anti-frost heaving effects, water saving effects, and investment benefits of the six lining forms before and after the thaw period, the water loss rate per unit length for the lining form of “cast-in-place concrete plus heated board with resinous balm and mortar” was 0.0306 /km, the investment per unit length was 53.73 million Yuan/km, and the anti-seepage effects kept unchanged before and after the thaw period. In summary, this canal lining form was suitable in the Shijin Irrigation District and may be applied to other anti-seepage engineering projects in North China.

水利部公益性行业科研专项经费项目（201001037）、河北省自然基金项目（E2011204108）、河北省水利厅项目（2011108）