자유단 공진시험을 이용한 암석의 탄성계수 측정

초록

Dynamic measurements are used rather sparingly to determine the elastic moduli of rock cores and modulus values are not much utilized in design parctice. The reason seems to result from the general perception that values obtained by dynamic measurement are much higher (about 10 times)than those determined satically. This paper presents results from dynamic and static tests on rock cores. The findings are :1) elastic moduli can be consi- stently determined by laboratory seismic testing. 2) nonlear deformation characteristics of rock cores was tentatively proposed with variation in elastic modulus with strain.