ROCK FALL PREVENTION DEVICE AND MANUFACTURING METHOD FOR THE SAME, AND ENERGY CONTROL TYPE ROCK FALL PROTECTIVE NET METHOD

摘要

PROBLEM TO BE SOLVED: To increase the friction force of a buffer wire part while improving assembling property.;SOLUTION: There is provided a buffer implement 11 allowing a buffer wire material part 15 of a rockfall preventing wire material to slide at the occurrence of tension of a predetermined value or more in the rockfall preventing wire material. In the buffer implement 11, first flat plate pieces 25 and second flat plate pieces 26, through which the buffer wire material part 15 penetrates and which are juxtaposed in the lengthwise direction of the buffer wire material part 15 and fixed to the rockfall preventing wire material side, are repeatedly arranged. A first penetration part 41 through which the buffer wire material part 15 penetrates in the first flat plate piece 25 is deviated from a second penetration part 42 through which the buffer wire material part 15 penetrates in the second flat plate piece 26. The buffer wire material part 15 becomes wave-shaped and the buffer wire material part 15 is brought into such a state as if it is bit by corners at contact angles P between parts obliquely upward inclined 15C and the second penetration parts 42.;COPYRIGHT: (C)2012,JPO&INPIT