A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Abstract Experiments have been carried out to determine the effect of joints on the propagation of P-waves in specimens of both weak and strong rocks; in particular the effect of normal stress on the transmission of P-waves in jointed rock was studied. These experiments were supported by measurements of seismic wave velocity carried out in tunnels driven in Lower Chalk and Carboniferous strata. The laboratory tests showed that relatively small normal stresses are sufficient to close joints acoustically and this was confirmed by the tunnel site observations. The results show that the interpretation of seismic data for the exploration of engineering sites may be improved by allowing for effects which result in the acoustic closure of joints.
Abstract Experiments have been carried out to determine the effect of joints on the propagation of P-waves in specimens of both weak and strong rocks; in particular the effect of normal stress on the transmission of P-waves in jointed rock was studied. These experiments were supported by measurements of seismic wave velocity carried out in tunnels driven in Lower Chalk and Carboniferous strata. The laboratory tests showed that relatively small normal stresses are sufficient to close joints acoustically and this was confirmed by the tunnel site observations. The results show that the interpretation of seismic data for the exploration of engineering sites may be improved by allowing for effects which result in the acoustic closure of joints.
The transmission of compressional waves in jointed rock
Engineering Geology ; 15 ; 151-161
1979-05-15
11 pages
Article (Journal)
Electronic Resource
English
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