长江科学院院报 ›› 2014, Vol. 31 ›› Issue (11): 177-181.DOI: 10.3969/j.issn.1001-5485.2014.11.0342014,31(11):177-181,188

• 工程设计与施工监控 • 上一篇    下一篇

锦屏水电站变形拉裂体施工期安全监测及分析

邓建华1,邱山鸣1,杨弘2   

  1. 1.中国电建集团 中南勘测设计研究院有限公司,长沙 410014;
    2.锦屏建设管理局 雅砻江水电建设开发有限公司,成都 610021
  • 收稿日期:2014-08-01 修回日期:2014-11-05 出版日期:2014-11-01 发布日期:2014-11-05
  • 作者简介:邓建华(1983-),男,湖南郴州人,工程师,硕士,主要从事安全监测方面的工作,(电话)13734941906(电子信箱)114460334@qq.com。

Monitoring and Analysis of Tension-Displaced Rock Mass during the Construction of Jinping Hydropower Station

DENG Jian-hua1,QIU Shan-ming1,YANG Hong2   

  1. 1. Power China Zhongnan Engineering Corporation Limited, Changsha 410014, China;
    2. Jinping Construction Department, Yalongjiang Hydroelectric Development Co., Ltd., Chengdu 610021, China
  • Received:2014-08-01 Revised:2014-11-05 Online:2014-11-01 Published:2014-11-05

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摘要： 锦屏一级水电站左岸边坡是目前水电工程开挖高度最高、开挖规模最大、稳定条件最差的边坡工程之一,其中由几组构造结构面切割成的变形拉裂体对整个边坡的稳定性尤为重要。介绍了拉裂体施工期监测情况,依据监测资料运用了对比法、因素分析法和特征值统计法等,并结合地质条件和施工信息对拉裂体变形在时间演化规律和空间分布特征等进行了综合分析。综合分析表面、浅部及深部的变形监测资料结果表明经开挖支护后变形拉裂体与边坡整体变形特征总体一致,历经6年多的考验,已趋于稳定。

关键词: 变形拉裂体, 施工期监测, 影响因素, 对比分析, 变形特征

Abstract: The left bank excavation slope of Jinping first stage hydropower station is remarkable of its height, scale and bad stability condition. The tension-displaced rock mass is comprised of several structural tectonic structural planes and is critical to the stability of the whole excavation slope. The safety monitoring for the tension-displaced rock mass is introduced. Overall analysis on the time evolution and spatial distribution of the tension-displaced rock mass is conducted by using correlation, factors analysis, and eigenvalues statistics according to geological conditions and construction information. The monitoring data of surface, shallow and deep deformation suggest that the tension-displaced mass is consistent with the overall slope deformation characteristics after excavation and support, and after six years of tests, it has gradually stabilized.

Key words: tension-displaced rock mass, monitoring during construction, influence factors, comparative analysis, deformation features

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