摘要
顺层岩质边坡的稳定性受到多种因素影响。针对坡脚纵向开挖因素,采用有限差分软件FLAC3D对开挖过程边坡稳定性变化进行数值模拟分析。模拟结果表明,坡脚纵向开挖长度较小时,位移计算收敛;小幅度扩大纵向开挖长度时,由于边坡周围岩体的约束作用,不会发生沿层面的滑动;当开挖长度接近临界值时,边坡位移将由蠕变发展到滑移。计算结果与工程实际吻合较好,可为类似施工建设提供理论参考。
The stability of bedding rock slope is affected by many factors. Regarding the longitudi- nal excavation factors of slope foot, the finite difference software FLAC3D is used to simulate the slope stability in excavation process. The results indicate that the displacement calculation is con- vergent when the longitudinal excavation length of the slope foot is small and that the sliding along the slope will not appear due to the constraint of the surrounding rock when the longitudinal excava- tion length is widened slightly and that the slope displacement will be developed from creep to slip when the excavation length is close to the critical value. This is in good accordance with the engi- neering practice to provide theoretical reference for similar construction.
作者
康海
KANG Hal(China Gezhouba Group Corporation International Ltd. , Beijing 100025, China)
出处
《水利科技与经济》
2017年第5期20-23,共4页
Water Conservancy Science and Technology and Economy
