锦屏一级水电站引渠内侧自然边坡的稳定性 |
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引用本文: | 王东,伍法权,任爱武.锦屏一级水电站引渠内侧自然边坡的稳定性[J].工程地质学报(英文版),2008,16(6):793-797. |
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作者姓名: | 王东 伍法权 任爱武 |
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作者单位: | 中国科学院工程地质力学重点实验室,北京,100029;中交远洲交通科技有限公司,石家庄,050051;中国科学院工程地质力学重点实验室,北京,100029 |
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摘 要: | 层状岩体顺层滑动但却存在反倾的后缘结构面的边坡稳定性研究尚未见到具体讨论。本文采用了数值模拟方法对锦屏一级水电站引渠内侧边坡的稳定性进行了分析,通过结构面参数折减法,求得该边坡稳定性系数为1.191,后端岩体对前端不稳定体不存在推力。通过数值分析方法和极限平衡法对结构面相关参数的敏感性进行了分析对比,对比表明采用参数折减法的数值分析方法结果可靠。本文为类似复杂岩体边坡稳定性判定提供参考。
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关 键 词: | 反倾后缘边坡 参数折减法 |
STABILITY ANALYSIS OF THE SLOPE INSIDE APPROACH CHANNEL AT JINGPING HYDROELECTRIC POWER STATION |
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Institution: | 1.Key Laboratory of Engineering Geo-mechanics, Chinese Academy of Sciences, Beijing |1000292.ChinaRoad Communication Lt.d, |Shijiazhuang |050051 |
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Abstract: | Weak structure face is the key point of rock slope stability.In particular,the anti-dip weak structure face at back edge of the slope can control the stability of that slope.Such problem is complex because the stress applied to the face at the back edge sometimes is not clear.This paper presents a numerical analysis of such a rock slope problem.It is to assess the stability of a rock slope inside the approach channel of Jingping Hydroelectric Power Station.The factor of safety of the rock slope is found to be 1.191.The rearward rock mass is found to have no stress to the front slide block.Both the numerical method and the limit equilibrium method were used to discuss the parametric sensitivity of the weak structure face.The results of the two methods show that the numerical method with strength reduction is suitable to assess the stability of this rock slope. |
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Keywords: | Rock slope Anti-dip weak structure Strength reduction Factor of safety Stability analysis |
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