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首页> 美国政府科技报告 >Underwater Subsurface Injected Canal Sealants -- Lower Cost Canal Lining Program and Soil and Moisture Conservation Program
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Underwater Subsurface Injected Canal Sealants -- Lower Cost Canal Lining Program and Soil and Moisture Conservation Program

机译：水下地下注入渠道密封剂 - 低成本运河衬砌计划和土壤和水分保持计划

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摘要

A method of reducing canal seepage by injecting an asphalt emulsion under the soil surface was investigated. This technique is intended for use in unlined canals with water delivery commitments which would not allow dewatering for conventional lining construction. Special equipment for field and laboratory studies was developed. The studies demonstrated that the placement of a continuous membrane of asphalt 6 to 8 in. below the perimeter of an unlined canal is possible. Success of this method is dependent upon soil conditions, physical and chemical characteristics of the sealant material, injection machine design, and injection machine operation. After testing 7 cationic asphalt emulsions, 1 anionic asphalt emulsion, 1 rubberized asphalt emulsion, and 1 gelatinous material, the results indicated that a medium-setting, mixing-grade cationic asphalt emulsion was the most satisfactory for sealing the type of soils used in the study. A brief history of the development of this method dating back to 1964 is presented.

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