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Efecto del lastrado de geófonos en medidas de vibraciones por voladuras

Authors: Gaona Boixader, Roger;

Efecto del lastrado de geófonos en medidas de vibraciones por voladuras

Abstract

El control de vibraciones generadas por voladuras tiene por objeto prevenir y evitar daños a las estructuras y edificaciones cercanas. Para realizar este control se implementan sismógrafos que registran la velocidad pico de partícula (PPV) y las frecuencias dominantes. Para que las medidas registradas por el sismógrafo sean representativas, es muy importante que el geófono se mueva solidariamente con el terreno. Existen diversas recomendaciones para la fijación, definidas por ciertas normativas, manuales o libros. Sin embargo, sucede a menudo que estas condiciones de fijación son difíciles o incluso imposibles de llevar a cabo en la práctica. El objetivo del presente trabajo es estudiar experimentalmente cómo influye en las medidas de velocidad pico de partícula (PPV) y frecuencia, la colocación de un peso extra o lastre sobre un sismógrafo de captador interno para aumentar su acoplamiento con el terreno.

El control de vibracions generades per voladures té per objecte prevenir i evitar danys a les estructures i edificacions properes. Per fer aquest control s'implementen sismògrafs que registren la velocitat pic de partícula (PPV) i les freqüències dominants. Perquè les mesures registrades pel sismògraf siguin representatives, és molt important que el geòfon es mogui solidàriament amb el terreny. Hi ha diverses recomanacions per a la fixació, definides per certes normatives, manuals o llibres. Tanmateix, sovint passa que aquestes condicions de fixació són difícils o fins i tot impossibles de dur a terme a la pràctica. L'objectiu del present treball és estudiar experimentalment com influeix en les mesures de velocitat pic de partícula (PPV) i freqüència, la col·locació d'un pes extra o llast sobre un sismògraf de captador intern per augmentar-ne l'acoblament amb el terreny.

The purpose of monitoring vibrations generated by blasting is to prevent and avoid damage to nearby structures and buildings. To perform this monitoring, seismographs are used to record peak particle velocity (PPV) and dominant frequencies. In order for the measurements recorded by the seismograph to be representative, it is very important that the geophone moves in conjunction with the ground. There are various recommendations for fixing, defined by certain regulations, manuals or books. However, it often happens that these fixing conditions are difficult or even impossible to carry out in practice. The objective of this work is to experimentally study how the placement of an extra weight or ballast on an internal-capture seismograph to increase its coupling with the ground influences peak particle velocity (PPV) and frequency measurements.

Country
Spain
Keywords

sismografos, Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria de mines, Blasting, Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Sismologia, Explosives, vibraciones, geofonos, voladuras, lastre, Voladures (Mineria)

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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