FALLING OBJECT PREVENTION CONSTRUCTION IN TUNNEL, FALLING OBJECT PREVENTION METHOD, AND FALLING OBJECT PREVENTING MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a falling object prevention construction inside a tunnel capable of preventing the falling of large and small objects with the prevention work carried out easily, a falling object prevention method, and a falling object prevention member.;SOLUTION: They comprise netting attached to the surface of concrete lining already formed inside a tunnel and support members penetrating through concrete lining; and they are the falling body prevention construction having netting and support members for concrete masses placed in the natural ground at the rear of concrete lining, anchor devices for support members having anchor holes attached to the netting in addition to their working methods. The feature of the falling object prevention members is that the support member anchor means having anchoring holes for inserting the support members are attached to the netting at predetermined intervals.;COPYRIGHT: (C)2001,JPO