| 基于折线滑动面法的土石坝坝坡稳定分析 |
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| 引用本文： | 杨才,丰土根.基于折线滑动面法的土石坝坝坡稳定分析[J].水利与建筑工程学报,2013(3):53-55,69. |
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| 作者姓名： | 杨才 丰土根 |
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| 作者单位： | 河海大学岩土力学与堤坝工程教育部重点实验室;河海大学岩土工程研究所 |
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| 基金项目： | 国家自然科学基金项目(51009054);教育部科学技术研究重点项目(109077);江苏省自然科学基金(BE2010513) |
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| 摘 要： | 采用折线滑动面法,利用visual basic程序语言编制计算程序求解危险工况下的最小稳定安全系数Kc值。经计算,在三种工况下,水位在1/3坝高处、稳定渗流期设计洪水位以及正常蓄水位+地震,Kc值均满足要求。在此基础上,还讨论了上游水位变化对坝坡稳定的影响以及折坡折点位置变化对坝坡稳定的影响,并验证了与文献8]中所述利用公式法计算得出的相关结论一致性,即坝内最小Kcmin值的折面不会通过坝顶平面,只限于坝坡范围内。
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| 关 键 词： | 土石坝 折线法 坝坡稳定分析 计算程序 最小稳定安全系数 |
Stability Analysis for Earth-rock Dam Slope Based on Broken Line Method |
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| YANG Cai,FENG Tu-gen.Stability Analysis for Earth-rock Dam Slope Based on Broken Line Method[J].Journal of Water Resources Architectural Engineering,2013(3):53-55,69. |
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| Authors: | YANG Cai FENG Tu-gen |
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| Affiliation: | 1,2(1.Key Laboratory of Ministry of Water Resource for Geomechanics and Embankment Engineering,Hohai University,Nanjing,Jiangsu 210098,China;2.Research Institute of Geotechnical Engineering,Hohai University,Nanjing,Jiangsu 210098,China) |
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| Abstract: | Based on the broken line method,the Visual Basic programming language is used to compile a program so as to get the value of minimum safety coefficient Kc under risk working conditions.Through calculation,it is found that in three working cases,the water level is in 1/3 of the dam height,and the design flood level in steady seepage stage as well as and the normal storage level and earthquake,and Kc value could meet the requirements of design.Based on this,the influence on the stability of dam slope due to the change of upstream water level and the turning point's position is discussed.At the same time,the conclusion from Literature 8] is tested,in which the formula is used for calculation,and the results are consistent,that is,the bending surface to the Kcmin value could not pass through the dam crest level and just be limited to the range of dam slope. |
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| Keywords: | earth-rock dam broken line method stability analysis of dam slope calculation program minimum safety factor of stability |
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