岩石供試体の縦波伝播速度と一軸圧縮強さとの関係

概要

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The compressional wave velocity, apparent density and uniaxial compressive strength of rock specimens are measured in the laboratory. Numbers of the specimens are about 170, half of them are sandstone and the others sandy shale, tuff, crystalline limestone, granite, andesite, ASO lava etc. When rearranging our experimental results we can take out the following interresting conclusions. In order to evaluate compressive strength from compressional wave velocity, we have need to take off some particular groups of rocks such as crystalline limestone, conglomerate, breccia and spherulitic holohyaline ASO lava. Then, compressional wave velocity V and compressive strength of rock specimens are closely combine each other by following empirical formula. σ_c=43V^<2.23>(1±0.4) The above equation does not be applicable for rock specimens which are weathered and have cracks or anisotropy in surface observation.
一般社団法人日本応用地質学会の論文
1971-09-01