Thesis OPTIMIZACIÓN DE PARÁMETROS PARA LA ADQUISICIÓN DE DATOS MEDIDOS IN SITU POR MEDIO DEL MÉTODO DE ANÁLISIS MULTICANAL DE ONDAS SUPERFICIALES (MASW)
Date
2017
Authors
SUÁREZ GÓMEZ, LUIS ROBERTO
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
En obras de ingeniería civil es fundamental conocer las propiedades geofísicas de los materiales que conforman el subsuelo. Existe un método sísmico llamado Análisis multicanal de ondas superficiales (MASW, Multichannel Analysis of Surface Waves) que se ha utilizado en las últimas décadas para medir y evaluar la velocidad de onda de corte en diferentes sitios.La extracción precisa de un perfil de velocidad de onda de corte es crítica para cualquier método de ondas superficiales. Aunque el método MASW resulta ser eficaz para este propósito, existen parámetros de adquisición de datos que al establecerse correctamente posibilitan la extracción óptima de estos perfiles.Se determinaron los parámetros externos que influyen en la medición, los cuáles fueron: 1) la fuente emisora, 2) distancia de la fuente al receptor más cercano, 3) separación entre los geófonos y 4) longitud del arreglo. Con el objetivo de verificar la influencia de estos parámetros en la resolución de los perfiles obtenidos, se buscaron las diferentes variantes de ellos.Obtenidos los perfiles se realizó un análisis donde se establecen recomendaciones respecto a la configuración de los parámetros óptimos con la finalidad de confeccionar perfiles de velocidad de onda de corte con mayor precisión.
In civil Engineering works It is fundamental to know the geophysical properties of the materials that shape the subsoil. There is a seismic method called Multichannel Analysis of superficial waves (MASW) that has been used in the last decades to measure and evaluate the shear wave velocity in different sites.The accurate extraction of the cutting wave speed profile is critical to any surface wave method. Although, Multichannel Analysis of superficial waves (MASW) method turn out to be effective for this purpose, there are data acquisition parameters which If they are achieve to establish correctly they will possible the optimize extraction of these profiles.The external parameters which influencing the measurement were determined, these are: 1) the offset source, 2) the distance from this source and the nearest receiver, 3) the distance between the geophone and 4) the receiver spread length. To check the influence of these parameters within the resolution of the obtained profiles, the different variants were looked of them.Finally, when the profiles are obtained, the next step is to analyses them and establish recommendations related to the configuration of the ideal parameters, where the main objective will be making the shear wave velocity profiles with greater precision.
In civil Engineering works It is fundamental to know the geophysical properties of the materials that shape the subsoil. There is a seismic method called Multichannel Analysis of superficial waves (MASW) that has been used in the last decades to measure and evaluate the shear wave velocity in different sites.The accurate extraction of the cutting wave speed profile is critical to any surface wave method. Although, Multichannel Analysis of superficial waves (MASW) method turn out to be effective for this purpose, there are data acquisition parameters which If they are achieve to establish correctly they will possible the optimize extraction of these profiles.The external parameters which influencing the measurement were determined, these are: 1) the offset source, 2) the distance from this source and the nearest receiver, 3) the distance between the geophone and 4) the receiver spread length. To check the influence of these parameters within the resolution of the obtained profiles, the different variants were looked of them.Finally, when the profiles are obtained, the next step is to analyses them and establish recommendations related to the configuration of the ideal parameters, where the main objective will be making the shear wave velocity profiles with greater precision.
Description
Catalogado desde la version PDF de la tesis.
Keywords
METODO DE ANALISIS MULTICANAL , ONDAS SUPERFICIALES , PROPIEDADES GEOFISICAS