Safety Evaluation of High-Speed Train by the Effect of Mine Blasting

초록

Recently Honam high-speed railroad line is constructed in southern part of Korea. This line is for next generation HST named HEMU-430X. But there is a limestone mine near Honam HSR line and this mine will make a process to dig a passageway under Honam line. In this case, safety of railroad system and stability of mine are crucial problems on both sides. By measuring mine blasting vibration and calculating regression equation, effect of mine blasting to train running is investigated quantitatively. Applying 0.5kine (cm/sec) as a management specification, safe region of mine blasting is defined. Train induced vibration is also investigated to evaluate stability of mine. Comparing results of vibration propagation properties, location and shape of a passageway is determined in this study.