土工基础

›› 2012, Vol. 26 ›› Issue (5): 75-77.

• 工程实录 • 上一篇    下一篇

构皮滩水电站升船机边坡开挖稳定性分析

 李亚锋1，郭志华2，徐海阳2，冷先伦3   

  1. （1.贵州乌江水电开发有限责任公司构皮滩发电厂，贵州余庆 564408；2.长江勘测规划设计研究院枢纽处，武汉 430010；3.中科院武汉岩土力学研究所岩土力学与工程国家重点实验室，武汉 430071）
  • 收稿日期:2012-07-05 出版日期:2012-10-20 发布日期:2012-10-27
  • 作者简介:李亚锋（1970-），男，工程师，研究方向为工程建设及管理等。

Stability Analysis for the Slope Excavation for a Ship Lift of the Goupitan Hydropower Plant

LI Yafeng1, GUO Zhihua2，XU Haiyang2，LEN Xianlun3   

  1. （1.Goupitan Power Plant (Construction Company), Guizhou Wujiang Hydropower Development Co., Ltd, Yuqing, Guizhou 564408；2.Changjiang Institute of Survey, Planning, Design and Research, Wuhan 430010；3.Institute of Rock and Soil Mechanics, The Chinese Academy of Sciences，National Key Laboratory of Soil Mechanics and Engineering，Wuhan  Hubei 430071，China）
  • Received:2012-07-05 Online:2012-10-20 Published:2012-10-27

摘要： 以现场地质勘查及室内试验研究成果为基础，采用有限元软件模拟了构皮滩水电站第三级升船机边坡的开挖施工过程，通过对比分析三种不同支护开挖方案条件下边坡的变形形态、最大主应力分布及塑性区分布规律，研究了边坡的开挖稳定性，得到以下结论：锚杆和锚索的支护方案能有效控制局部失稳区域的位移变形形态；锚杆和锚索支护方案能有效控制边坡坡面开挖后的拉应力区；锚杆、锚索支护均能有效控制边坡开挖后的塑性区面积及分布；锚杆和锚索同时施加的支护方案能较好的保障第三级升船机边坡的开挖稳定性。

关键词: 构皮滩, 升船机边坡, 边坡稳定, 支护措施, 数值模拟

Abstract: Based on the field geological exploration and the laboratory tests, a finite element analysis for the excavation stability was conducted on the ship lift slope of Goupitan Hydropower Plant. The deformation, the maximum principal stress distribution, and the failure zones of three different excavation schemes were studied. It is found that the deformation, the zones of tensile stress and zones of potential failure can be effectively reduced by the proposed rock anchors. The stability of the ship lift slope can be assured throughout the detailed analyses.

Key words: Goupitan, Ship Lift Slope, Slope Stabilit, Supporting Measures, Numerical Simulation