三峡工程中陡高边坡圆弧坡面开挖模型  

A Model of Excavation of Steep-high Slope Based on the Arc Slope in the Three Gorges Project

作　　者：韩西安[1] 邱铭铭[2] 刘可佳[3] 陈辉[3] 

机构地区：[1]装备指挥技术学院,基础部,北京,101416 [2]装备指挥技术学院,测量控制系,北京,101416 [3]装备指挥技术学院,电子工程系,北京,101416

出　　处：《装备指挥技术学院学报》2003年第5期97-100,共4页Journal of the Academy of Equipment Command & Technology

摘　　要：研究了三峡工程中永久船闸陡高边坡的开挖方案及山体的稳定性问题,利用刚体平衡法、瑞典条分法对滑体进行受力分析,通过设置多个参变量来搜索山体中可能存在的危险滑动面,提出了使开挖加固总费用达到最小的最优斜面开挖角的优化模型;基于斜面边坡的最优开挖角,建立了圆弧边坡的优化开挖模型;最后在总费用一定的条件下,比较并分析了前后2种边坡安全系数及其分布情况,揭示了圆弧边坡具有更为良好的稳定性.数值结果表明: 圆弧边坡的安全系数分布更为合理, 其边坡的整体稳定性优于斜面边坡.In this paper, the scheme of excavation of the steephigh slope of perpetual shiplocks and the stability of the mountain body in the Three Gorges Project are studied. The methods of rigid body equity and Sweden stripeallocated are used respectively, and the condition of applied forces about the sliding body is analyzed. During the course, several variables are selected to search the latent dangerous gliding sides. At last, an optimal model is established to search for the optimal angle of slant with minimum costs. Furthermore, based on the optimal angle, an arc slope model is built. Safety factor and its distribution between the talus and the arc slope are compared and analyzed. The numerical example indicates that the safety factor of the arc slope is more reasonable and the whole stability of the slope is improved.

关 键 词：三峡工程 陡高边坡 圆弧坡面 开挖模型 最优斜面开挖角 安全系数分布 

分 类 号：TU753.1[建筑科学—建筑技术科学]