Skin successful disaster prevention device at the tunnel face

摘要

PROBLEM TO BE SOLVED: To provide a fall-of-rocks disaster prevention device capable of efficiently guarding an operator on a working face with a simple structure.;SOLUTION: A fall-of-rocks disaster prevention device comprises at least two wires and a mat-like impact absorber having a plane area larger than a projection area of an operator.;COPYRIGHT: (C)2012,JPO&INPIT