乐慧琳, 吴继敏, 岳翎, 刘佳明, 朱峰. 2016: 基于正交分析法的含软弱夹层边坡敏感性因素分析. 工程地质学报, 24(s1): 1034-1039. DOI: 10.13544/j.cnki.jeg.2016.s1.149
    引用本文: 乐慧琳, 吴继敏, 岳翎, 刘佳明, 朱峰. 2016: 基于正交分析法的含软弱夹层边坡敏感性因素分析. 工程地质学报, 24(s1): 1034-1039. DOI: 10.13544/j.cnki.jeg.2016.s1.149
    LE Huilin, WU Jimin, YUE Ling, LIU Jiaming, ZHU Feng. 2016: SENSIBILITY ANALYSIS OF INFLUENCING FACTORS OF SLOPE WITH WEAK INTERLAYER BASED ON ORTHOGONAL DESIGN METHOD. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 1034-1039. DOI: 10.13544/j.cnki.jeg.2016.s1.149
    Citation: LE Huilin, WU Jimin, YUE Ling, LIU Jiaming, ZHU Feng. 2016: SENSIBILITY ANALYSIS OF INFLUENCING FACTORS OF SLOPE WITH WEAK INTERLAYER BASED ON ORTHOGONAL DESIGN METHOD. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 1034-1039. DOI: 10.13544/j.cnki.jeg.2016.s1.149

    基于正交分析法的含软弱夹层边坡敏感性因素分析

    SENSIBILITY ANALYSIS OF INFLUENCING FACTORS OF SLOPE WITH WEAK INTERLAYER BASED ON ORTHOGONAL DESIGN METHOD

    • 摘要: 在工程中,软弱夹层的存在对边坡稳定性有重要影响,是边坡发生失稳破坏的重要原因。由于正交试验设计方法在边坡敏感性分析中具有一定优势,将该方法引入到含软弱夹层边坡的敏感性因素分析中。选取了完整岩体即石英砂砾岩黏聚力,内摩擦角,重度,软弱夹层即有泥化现象的石英云母片岩的黏聚力,内摩擦角,重度以及地震加速度这7个因素进行含软弱夹层边坡的敏感性正交试验分析。采用极差法和方差法分析各个参数对边坡稳定性系数的影响,比较分析两种计算方法的结果及两种计算方法的优缺点。结果表明:综合两种方法计算结果,结合实际情况,分析认为对该含软弱夹层的水电站边坡,参数对边坡稳定性影响的排序应为:地震加速度 石英云母片岩内摩擦角 石英云母片岩黏聚力 石英砂砾岩黏聚力,其他3个参数对边坡稳定性影响很小,没有排序的意义。比较两种计算方法的分析结果发现,方差法计算得到的结论更加符合实际情况,更加准确。与方差法相比,虽然极差法计算简单快速,但是计算结果过于粗糙,因此,推荐使用方差法对正交试验结果进行分析。

       

      Abstract: In the engineering, the existence of the weak interlayer has an important influence on the slope stability. Weak interlayer is a vital reason of instability and failure of slope. Since the orthogonal design method has great advantages in the sensitivity analysis of slope stability, the method is applied to the analysis of slope stability with weak interlayer. The cohesion, internal friction angle and unit weight of quartz sand gravel rock, the cohesion, internal friction angle and unit weight of the weak interlayer(Mica-quartzose schist) as well as earthquake acceleration were selected to carry out the stability analysis of the slope with weak interlayer based on the orthogonal design method. The influence of each parameter on the slope stability coefficient was analyzed by range method and variance method, and the results of the two calculation methods and the advantages and disadvantages of the two methods were compared and analyzed. It is found that, combined with the actual situation as well as the results of these two calculation methods, the influence of parameters on the stability of the hydropower station slope with weak interlayer is as follows: earthquake acceleration internal friction angle of the weak interlayer cohesion of the weak interlayer cohesion of quartz sand gravel rock. Three other parameters had litter effect on the stability of the slope, it is unnecessary to rank these three parameters. Compared with the variance method, although the range method is more simple and rapid, the calculation results are too coarse. Therefore, it is recommended to use the variance method to analyze the results of the orthogonal test.

       

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