열차진동 측정을 위한 시추공 진동측정장치 개발

초록

A prototype of the borehole seismograph for measuring the ground borne vibration induced by railway traffic is under development at the Korea Railroad Research Institute (KRRI). The new seismograph adopts a gimbal arrangement within high-viscose liquid for improving the accuracy of measurements associated with the tilt of geophone sensor. In order to investigate the performance of the new seismograph, a set of laboratory tests was carried out using the KRRI shake table which allows the train-induced ground borne vibration to be replicated. Current paper describes the design philosophy, and presents the analyses of the measurements obtained from the laboratory tests.