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Prediction of seismically dangerous zones of dams and reservoirs from engineering-seismogeological data
Summary A general prediction of seismically dangerous zones of dams and reservoirs should be given at the initial stages of researches from seismotectonic data (palaeoseismogeological ones included) on the basis of the seismological, geophysical and geological-tectonic data available. Seismogenic morphostructures are singled out and their potential seismicity is determined. Potential seismically dangerous regions of big dams are divided into two zones: first (central) is the zone of possible average-maximum earthquakes with the event probability of 0.01 (one event per 10 000 years) and the second (peripheral) is the zone of maximum earthquakes (able to produce shocks with a force of 7–8 degrees with event probability less than 0.01 at dams and reservoirs). On the basis of these data, the project of detailed complex geologo-geophysical and seismological researches is made up. In the second zone the earthquake epicentres (maximum) are connected with large morphostructures. Therefore, seismotectonic researches should be carried out on the basis of data from the regional network of seismic stations, state geological and geophysical maps, aerial photographs and ERTS-images. In the first zone, a seismic station network is being created. It allows epicentre determinations to be made with an accuracy sufficient to reveal their relationship with concrete seismotectonic structures. Special geophysical prospecting makes it possible to survey the exact location of fault zones, contours of morphostructures, their deep morphology, characteristics of geological bodies for definition (or prediction) of engineering seismogeological objects with anomalous earthquake display (massifs of hyperbasites, laccolites, intrafault blocks, thick strata of friable sediments or zones of intensive deep-seated karst, etc.). As result of seismotectonic researches, seismogenic morphostructures are marked out, their potential seismic activity is determined, seismic activity of their individual parts and regional faults is estimated, the trend (evolution) of seismic process development is determined. Estimation of probability, type and scale of residual and dynamic deformations: seismotectonic (regional, zonal and local), gravitational-seismotectonic and seismogravitational is given. On the basis of seismotectonic data, the probability, site and intensity of “dam” earthquakes are predicted.
Prediction of seismically dangerous zones of dams and reservoirs from engineering-seismogeological data
Summary A general prediction of seismically dangerous zones of dams and reservoirs should be given at the initial stages of researches from seismotectonic data (palaeoseismogeological ones included) on the basis of the seismological, geophysical and geological-tectonic data available. Seismogenic morphostructures are singled out and their potential seismicity is determined. Potential seismically dangerous regions of big dams are divided into two zones: first (central) is the zone of possible average-maximum earthquakes with the event probability of 0.01 (one event per 10 000 years) and the second (peripheral) is the zone of maximum earthquakes (able to produce shocks with a force of 7–8 degrees with event probability less than 0.01 at dams and reservoirs). On the basis of these data, the project of detailed complex geologo-geophysical and seismological researches is made up. In the second zone the earthquake epicentres (maximum) are connected with large morphostructures. Therefore, seismotectonic researches should be carried out on the basis of data from the regional network of seismic stations, state geological and geophysical maps, aerial photographs and ERTS-images. In the first zone, a seismic station network is being created. It allows epicentre determinations to be made with an accuracy sufficient to reveal their relationship with concrete seismotectonic structures. Special geophysical prospecting makes it possible to survey the exact location of fault zones, contours of morphostructures, their deep morphology, characteristics of geological bodies for definition (or prediction) of engineering seismogeological objects with anomalous earthquake display (massifs of hyperbasites, laccolites, intrafault blocks, thick strata of friable sediments or zones of intensive deep-seated karst, etc.). As result of seismotectonic researches, seismogenic morphostructures are marked out, their potential seismic activity is determined, seismic activity of their individual parts and regional faults is estimated, the trend (evolution) of seismic process development is determined. Estimation of probability, type and scale of residual and dynamic deformations: seismotectonic (regional, zonal and local), gravitational-seismotectonic and seismogravitational is given. On the basis of seismotectonic data, the probability, site and intensity of “dam” earthquakes are predicted.
Prediction of seismically dangerous zones of dams and reservoirs from engineering-seismogeological data
Solonenko, V. P. (author)
1979
Article (Journal)
Electronic Resource
English
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
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