Study on Continuous Monitoring Method of High Fill Leakage in Water Diversion Project
In this study,a method suitable for early engineering structure damage warning was proposed for high fill water diversion project.Through the establishment of laboratory test model,an impervious layer was added between the strong permeable layer sand and gravel layer and the weak permeable layer clay layer,and the monitoring data results of infiltration failure under different working conditions were ob-tained by burying heating cables and distributed optical cables in layers.The test results,phenomena and changes of infiltration path after the addition of impervious layer were compared and analyzed,and determined the association between leakage damage and optical fiber monito-ring data.The distributed optical fiber can be used to measure the temperature field distribution of the embankment foundation soil.According to the difference of temperature field distribution,the location where piping may occur and has occurred in the embankment foundation can be determined.Different degrees of leakage damage correspond to different temperature fields,and the larger the seepage flow,the more obvious the difference in temperature fields.
high filldiverting waterseepage failuredistributed optical fibertemperature field
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