The reason analysis and treatment measures of the big difference between design and construction of curtain grouting per consumption

Abstract

There is a significant discrepancy between the actual and designed unit consumption in curtain grouting construction for water conservancy and hydropower projects, with an observable trend of increasing consumption. The causes of this increase are multifaceted, complex, and variable, primarily influenced by grouting materials, human factors, grouting pressure, and the lithology of the formation being irrigated. However, effective measures can be implemented to control this issue. Over the years, during the revision process of relevant specifications, emphasis has been placed on addressing this concern. Each revision has progressively refined parameters affecting unit consumption, aligning them more closely with actual engineering practices and enhancing operability and implementation. The factors contributing to the significant difference in unit consumption are influencing its increase in curtain grouting. By employing effective control measures and treatment strategies, the designed unit consumption can be made consistent with the actual construction unit consumption, thereby preventing design changes due to increased material costs. The research findings provide valuable reference for similar projects encountering comparable situations.

Keywords

curtain grouting / unit consumptionc / design / construction / difference / reason / treatment measure