SEISMIC EFFECTS CAUSED BY DISCHARGED WATER THROUGH THE WATERWORKS

V M Lyatkher,G L Mazhbits,L V Komel’Kov

doi:10.15518/isjaee.2015.01.006

Abstract

The paper discusses the field observation results of the vibration of the spillway dam Zhiguli hydroelectric station, the ground surface and residential buildings located in the surrounding area at various flood discharges and various schemes of flood evacuation. The amplitude of vibration of each section of the dam is directly proportional to the specific consumption of water discharged through the section of the dam and weakly depends on the mode flood evacuation. It is discovered the fact of self-synchronization of the oscillations of the individual sections of the dam. The dam begins to move as a single rigid stamp on the elastic foundation. Oscillations of the ground surface grow sharply at a fixed distance from the dam. The paper presents the results of measurements of the different designs houses vibration at different distances from the dam and the dependence of vibration parameters from the floods skip mode. There are recommendations for reducing houses vibration. The research defines flood parameters, in which homes vibration will exceed health standards.

Highlights

Significant houses vibration in the left region of town Tolliatti (Samara area, Russia), adjacent to the dam Zhigulevskaya HPP on the river Volga (Fig. 1) was found in the spring flood of 1979
It was suggested that vibration of buildings and cracks in the cladding of buildings associated with passage through the hydro system high flooding
The radius of the attenuation vibrations zone from a vibration source is proportional to the size of the stamp, so increasing the current size of the stamp area perceptible vibrations propagating from the hydro system, growing and covering many houses

Summary

G HH I

The amplitude of vibration of each section of the dam is directly proportional to the specific consumption of water discharged through the section of the dam and weakly depends on the mode flood evacuation. It is discovered the fact of self-synchronization of the oscillations of the individual sections of the dam. The paper presents the results of measurements of the different designs houses vibration at different distances from the dam and the dependence of vibration parameters from the floods skip mode.

Introduction

The Vibration of the Dam

Soil Vibration Outside of the Dam

Houses Vibration

Findings

Conclusion