中文摘要：

生态防渗技术在灌区改造建设中的推广应用备受关注。以渠底土工膜防渗＋干垒块挡墙和渠底土工膜防渗＋混凝土结合联锁块护坡2种生态防渗模式作为研究对象，以混凝土防渗和土渠作为对照。从防渗效果、生境变化、施工工艺、投资及管理机制5个方面对这4种渠道进行对比研究，建立起渠道的综合评价指标体系，通过评价，得出渠底土工膜防渗＋干垒块挡墙和渠底土工膜防渗＋混凝土结合联锁块护坡两种生态渠道的综合评价指标数值最高分别为72．55和72．30，其次是混凝土渠道为68．20，最低的为土渠是61．10。

英文摘要：

Ecological seepage control technology has been concerned in the process of construction and transformation in irrigation ar-eas. In this paper, two ecological seepage control mode of the carrel seepage control geomembrane ＋ dry base piece of retaining wall and the canal seepage control geomembrane ＋ concrete interlocking piece of slope protection have been collected as the research ob- ject, and the concrete canal and the earth canal as the control. Through the comparison of five aspects of the anti-seepage effect, hab- itat change, construction technology, investment and management mechanism among the four channels, the study set up the compre- hensive evaluation index system on channel. The evaluation analysis results show that the two ecological channel of the canal seepage control geomembrane ＋ dry base piece of retaining wall and canal seepage control the geomembrane ＋ concrete interlocking piece of slope protection had the highest value of the comprehensive evaluation index, which are 72. 55 and 72.3. The second value is 68. 20 for the concrete channel, and the lowest is 61.10 for earth canal.