Research on Construction Technology of Concrete Anti-seepage Wall in the Reinforcement of Xiaohulou Reservoir
During the construction of the hydraulic engineering concrete cut-off wall,due to the lack of analysis of the objective environmental conditions of the reservoir,the impervious performance of the cut-off wall can not meet the needs of the reservoir reinforcement project.Thus,the construction technology of concrete cut-off wall in the reinforcement of Xiaohulou Reservoir is put forward.According to the standards that the water reducing rate should be controlled more than 25％,the air content should be controlled less than 5.0 within 28 days,and the shrinkage rate of concrete should be controlled less than 110.0％,the specific concrete construction should be prepared.Based on the calculation of the actual hydraulic conditions,the concrete parameters of the bottom width of the concrete cut-off wall are determined.Finally,grouting holes are set on the anti-seepage wall frame to carry out grouting construction and complete the construction of the concrete anti-seepage wall.In the test results,the cumulative seepage flow is stable within 10.0 Lu during the test period,and within 1.5 Lu in a single period,which can meet the needs of reservoir reinforcement projects.
reservoir reinforcementconcrete cut-off wallconcrete preparationhydraulic conditionsbottom width of cut-off wallgrouting construction
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