| 摘要 |
PROBLEM TO BE SOLVED: To provide collapse detection warning equipment of falling-rocks, sediment, etc., which informs emergency matter generation to a driver beforehand when the nature accident is generated wherein falling-rocks and sediment break through a falling-rock protecting fence or a rock net which are installed for generation of falling-rocks and collapse of sediment in the vicinity of the entrance and the exit of an tunnel or a place of obstructed view, and close a road and a railway. SOLUTION: When falling-rocks or the like break through a falling-rock protecting fence 3 or a rock net 15 which are installed at the entrance and the exit of an tunnel 1 or a place of obstructed view, and a road 2 is overlaied, a mesh member 8 which is a movable object to be moved by the falling-rocks or the like is installed. An operating means operating a switch 6 by movement of the movable object, and a warning means generating an alarm to a driver running on the road 2 by operation of the switch 6 are installed.
|
