The selection of dam site of water conservancy project is not only related to safety,but also affects the later use and sta-ble operation.The analysis of regional velocity and lithology is usually required in the process of selection,where high-precision veloci-ty modeling is critical.Aiming at the selection of water conservancy dam site,a kind of geostatistical modeling method constrained by seismic information was proposed to model the high-precision velocity of dam site area.On this basis,the safety and rationality of dam site selection were analyzed.Through the theory of geostatistics,the regional variability of velocity in dam site area was analyzed,and the sequential gaussian simulation was carried out by using the lateral information of seismic horizon and the longitudinal information of logging data,then the velocity model was established.The modeling results were more in line with the actual situation and can effec-tively reflect the spatial distribution of velocity.Finally,the seismic records were synthesized by the established velocity model,which was in good agreement with the actual seismic records.The results show that the established model can reflect the velocity distribution of the dam site area,and the area conducive to the construction of the dam site can be delineated based on method of this paper,which verifies the feasibility of this method.
关键词
水利坝址区/速度建模/地质统计学/序贯高斯模拟/地震约束
Key words
hydraulic engineering dam site/velocity modeling/geostatistics/sequential Gaussian simulation/seismic constraints
维普
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