PREVENTION OF FALLING STONE, PREVENTION GUARD FENCE FOR SNOWSLIDE, AND POCKET TYPE PREVENTION NET OF FALLING STONE

摘要

PROBLEM TO BE SOLVED: To secure a shock-resistant property by spreading a protection net between posts of a fence body erected on a slope face and laterally stretching ropes to extend the lateral ropes when a specified tension acts between the posts and spreading wire netting on the lateral ropes. SOLUTION: A support rope 61 connected to a shuffle body 54 of a post 5 is fitted to a metal tool 62 of a buffering part and the hook of the metal tool 62 is fixed to the base 63 in an erection part of a fence body. And the fence body is erected on a slope face A. Even when fallen snow slides, it is received by the fence body to prevent a large snowslide. In this time, when a tensile force larger than a specified value acts on lateral ropes 31 of a protection net, the ropes are elongated against the holding force of the metal tool 1 at the buffering part. And when a shock larger than the holding force of the connection metal tool 2 at the crossing part acts on the connection part of the crossing part of the vertical and lateral ropes 31, 32, the crossing connection position is shifted. And further, when an impulse acts on the whole body of the protection net, a support rope 61 is elongated against the holding force of the buffering metal tool 62. In this way, the shock-resistant capacity of the whole body of the snowslide prevension fence is increased and the usability can be increased.