周洪福, 韦玉婷. 2011: 水电工程坝基岩体溶蚀程度对坝体不均匀沉降影响分析. 工程地质学报, 19(1): 122-128.
    引用本文: 周洪福, 韦玉婷. 2011: 水电工程坝基岩体溶蚀程度对坝体不均匀沉降影响分析. 工程地质学报, 19(1): 122-128.
    ZHOU Hongfu, WEI Yuting. 2011: ANALYSIS OF DAM UNEVEN SETTLEMENT DUE TO EXTENT OF ROCK DISSOLUTION IN DAM BASE AT HYDROPOWER PROJECT. JOURNAL OF ENGINEERING GEOLOGY, 19(1): 122-128.
    Citation: ZHOU Hongfu, WEI Yuting. 2011: ANALYSIS OF DAM UNEVEN SETTLEMENT DUE TO EXTENT OF ROCK DISSOLUTION IN DAM BASE AT HYDROPOWER PROJECT. JOURNAL OF ENGINEERING GEOLOGY, 19(1): 122-128.

    水电工程坝基岩体溶蚀程度对坝体不均匀沉降影响分析

    ANALYSIS OF DAM UNEVEN SETTLEMENT DUE TO EXTENT OF ROCK DISSOLUTION IN DAM BASE AT HYDROPOWER PROJECT

    • 摘要: 水电站坝基岩体发生溶蚀以后会对大坝的稳定性带来较大的影响,本文以工程实例为依托,利用三维数值分析技术,分析计算了坝基岩体不同溶蚀程度对坝体不均匀沉降的影响。结果表明:当坝基岩体强烈溶蚀、中等溶蚀、轻微溶蚀以后,坝顶处的最大位移分别达到10cm、5.5cm、4cm。坝基岩体溶蚀程度越高,坝体各处不均匀沉降的程度越严重。在相同的溶蚀程度下,坝踵处的不均匀沉降程度最严重,坝顶处不均匀沉降程度次之,坝趾处不均匀沉降程度相对最小。

       

      Abstract: The stability of dam would reduce after rock dissolution occurs at the dam base.Taking a project for example,this paper analyzes the uneven settlement of dam at different dissolution degrees of dam base rock mass. The paper uses a three-dimensional numerical analysis. The result of calculation can show the following findings: the maximum displacement on dam top will be 10 cm if a strong dissolution occurs at dam base. The maximum displacement on dam top will be 5.5 cm if a middling dissolution occurs at dam base. The maximum displacement on dam top will be 4 cm if a slight dissolution occurs at dam base.The more serious of dam base dissolution,the more serious degree of uneven settlement in dam.At the same degree of dissolution,uneven settlements of the dam heel will be of the most serious,uneven settlement of the dam top will be of middle serious,uneven settlement of the dam toe will be of slight.

       

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