Surface waves play a fundamental role in the propagation of vibrations caused by blasting. Indeed, active and passive surface wave tests, which are widely used techniques in engineering and geophysical exploration to infer model parameters for soils and rocks, can be profitably applied for the prediction of ground motion from blasting supplying relevant information on subsurface mechanical properties and source parameters (patterns of propagation and dominant wavelengths). In this respect, monitoring systems for ground vibrations can be conceived in order to use the collected data also for ground characterization purposes. Moreover, the interpretation of surface wave data can lead to an estimate of shear modulus and damping ratio (quality factor) as a function of depth. This information can be used to build a numerical model to simulate wave propagation and predict ground vibrations evaluating the performances of vibration mitigation systems. For preliminary assessments of ground vibrations induced by blasting, the information from surface wave tests can be used to improve the predictive capability of attenuation relationships. In particular in the present work reference is made to a recently proposed relationship based on energy spreading in the form of Rayleigh wave propagation. Data from a case history will be presented to exemplify the relevant aspects in the proposed methodology.

The role of surface waves in prediction of ground vibrations from blasting / Foti, Sebastiano; Comina, C; Sambuelli, Luigi; Callerio, A; Caleffi, A.. - STAMPA. - (2009), pp. 57-66. (Intervento presentato al convegno Fragblast 9 tenutosi a Granada nel 12-13 September 2009).

The role of surface waves in prediction of ground vibrations from blasting

FOTI, Sebastiano;SAMBUELLI, Luigi;
2009

Abstract

Surface waves play a fundamental role in the propagation of vibrations caused by blasting. Indeed, active and passive surface wave tests, which are widely used techniques in engineering and geophysical exploration to infer model parameters for soils and rocks, can be profitably applied for the prediction of ground motion from blasting supplying relevant information on subsurface mechanical properties and source parameters (patterns of propagation and dominant wavelengths). In this respect, monitoring systems for ground vibrations can be conceived in order to use the collected data also for ground characterization purposes. Moreover, the interpretation of surface wave data can lead to an estimate of shear modulus and damping ratio (quality factor) as a function of depth. This information can be used to build a numerical model to simulate wave propagation and predict ground vibrations evaluating the performances of vibration mitigation systems. For preliminary assessments of ground vibrations induced by blasting, the information from surface wave tests can be used to improve the predictive capability of attenuation relationships. In particular in the present work reference is made to a recently proposed relationship based on energy spreading in the form of Rayleigh wave propagation. Data from a case history will be presented to exemplify the relevant aspects in the proposed methodology.
2009
9780415482950
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2294671
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