4LaGatta M D, Boardman B T, Cooley B H, et al. Geosynthetic Clay Liners subjected to differential settlement[J]. Geotechnical and Geoen-vironental Engineering, ASCE, 1997,123(5) : 402--410.
5Calleros, J. R. The impact on Mexico of the lining of the All-American Canal[J]. Natural Resources Journal, 1991, 31:829--838.
6Ran -- I, Williams. -- J. Delineating ground water recharge from leaking irrigation canal using water chemistry and isotopes[J]. Ground-water. Westerville, Ohio: National Ground Water Association, 2001,39 (3) : 408-- 421.