Predictive model of the dam foundation deformations according to the consolidation model

Abstract

The dam with two culverts on the Vyunka river has been chosen for forecasting calculations. The physical and geographical features of the research area have been explored. The information on the organization of the control system of the hydraulic structure has been studied, the mix of diagnostic indicators of the state of the hydraulic structures substantiation has been carried out. The calculated values of the coefficients of the overall the upstream and downstream slopes stability for the cases considered have exceeded the standard coefficient of stability. The criteria values of the diagnostic indicators at the project stage have been defined by analysing the calculation results with ultimate element technique using the Plaxis 2D program for filtration modes, stress-strain state, strength and stability of hydraulic structures for the main and special combinations of loads. The choice of indicators is based on assessing the possibility of monitoring their values. The influence of the type of damage and destruction of the above elements has different significance on the hydraulic structures’ safety. A predictive model of deformations of the dam base was built according to the consolidation model based on the extrapolation method. The results of the obtained model of research hydraulic stricture are given.

Field studies to determine the deformations of low-pressure hydraulic structures

“…When conducting geodesic measurements, 2N-10L leveling was used, which was designed for leveling in the justification of topographic images, engineering-geodesic research [20]. Nature observations of geodesic methods were conducted to observe the deformation processes and deposition of hydrosystems.…”

“…Deviations from the technology of construction work, as well as violations of the rules of operation of hydrotechnical constructions, can lead to their deposition and silencing. In the practice of construction of hydrotechnics, geodesic methods of determining deformations are adopted: geometric and geostatic leveling -determination of silgears by height; angle and target measurements for determining smooth in the plan [19,20]. Deformation of the structure by height is often manifested in the form of its deposition.…”