ケーブルボルトの作用機構と支保効果に関する考察

抄録

The purpose of this paper is to examine the support effect of the cable bolt based on the mechanism that the axial force of the cable bolt is induced according to the relative displacement between the cable bolt and the rock mass. First, a estimation method of the bonding characteristics is proposed, which utilizes the result of in situ pull-out test. Then, the numerical experiments are carried out to understand the support effect of the cable bolt in terms of the frequency of discontinuities. The result of the numerical experiments indicate that the support effect of the cable bolt is more efficiently exhibited in discontinuous rock mass than in continuous rock mass.