A Simple Safety Assessment for Jointed Rock Slope/Tunnel in Mine
A method for evaluation of discontinuous rock slopes/tunnels is proposed. Main features of this method are as follows; 1) stability of triangular pyramid and wedge shaped blocks can be evaluated; 2)three modes of failure, i. e., rockslide, rockfall and toppling are taken into account; 3) stability analysis is based on limit equilibrium theory; 4)friction angle, cohesion and tensile strength of joints are taken into account; 5) pore-water pressure and seismic force can be applied to the block, and 6)conditions of stability of blocks are evaluated with simplified vector formula. The applicability of the proposed evaluation method to the stability assessment of model rock slope as well as real slope is investigated. The stability of a model slope with a large number of joints is also investigated under heavy rain and seismic conditions. As the information about the unstable volume of rock mass and the possibility of rockslide, rockfall or toppling can be obtained, engineers are able to evaluate the risk and narrow down the number of candidates for preferential countermeasure projects.
slope stability rockslide rockfall toppling rock joint
Yashima Atsushi Sawada Kazuhide Sumi Taketomi Kojima Masaki
Department of Civil Engineering, Gifu University, Gifu, 501-1193, Japan River Basin Research Center, Gifu University, 501 -1193, Japan Teikoku Engineering Consultants, Inc. , 502 -0933, Japan
国际会议
The 3rd International Symposium on Modern Mining & Safety Technology Proceedings(第三届现代采矿与安全技术国际学术会议)
辽宁阜新
英文
288-293
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）