长江三峡工程库区不同成因类型平缓斜坡的稳定性评价
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摘要
影响斜坡稳定性的因素可分为地形地质环境因素、动力环境因素和人类工程经济活动因素等三大类１０余种因素，而不同成因类型斜坡，其空间分布、地表形态特征、松散堆积层岩性、结构以及与下伏基岩的接触界面等因素各具特征。本文在对不同成因类型斜坡的稳定性的影响因素进行敏感性定量分析的基础上，分别给出了稳定性的宏观定性的地质判据，并研究了抗剪强度参数的确定方法和稳定性的定量评价方法。最后还给出了几种易失稳平缓斜坡类型量化评价的实例
The more than 10 factors affecting gentle slope stability can be differentiated into three types (i.e.geology, environment, and human activity), but the geological factors are fundamental. There exist six genesis types of gentle slope with their own geological characteristics in the reservoir area of Three Gorge project. The sensibility of these factors to the stability of the gentle slope were evaluated in detail. On the basis of above study and the investigation in situ, the geological criteria for discriminating the gentle slope stability were given here, and the quantitative methods were applied to evaluating the stability, considering the reservoir impounding, rainfall and maninduced infiltration, and the shear strength of the sliding soil mass in situ. The case studies of some of the gentle slope sensitive to slope failure were also given in this paper.
The more than 10 factors affecting gentle slope stability can be differentiated into three types (i.e.geology, environment, and human activity), but the geological factors are fundamental. There exist six genesis types of gentle slope with their own geological characteristics in the reservoir area of Three Gorge project. The sensibility of these factors to the stability of the gentle slope were evaluated in detail. On the basis of above study and the investigation in situ, the geological criteria for discriminating the gentle slope stability were given here, and the quantitative methods were applied to evaluating the stability, considering the reservoir impounding, rainfall and maninduced infiltration, and the shear strength of the sliding soil mass in situ. The case studies of some of the gentle slope sensitive to slope failure were also given in this paper.
引文
〕田陵君，王兰生，范世凯等主编长江三峡工程库岸稳定性，中国科学技术出版社，1992，4～22，97～1082〕周平根，欧正东，苏白燕古滑坡稳定性评价，环境地质研究（第三辑），地震出版社，1995〔3〕交通部第一铁路设计院主编铁路工程地质手册，人民交通出版社，1975〔4〕〔美〕YangH．Huang著包承钢等译，土坡稳定性分析，清华大学出版社，1988〔5〕QuidoZaruba，VojtechMencl．Landslidesandtheircontrol（2nded．．），ElsevierScientificpublishingCo．，1982〔6〕T．Hartlen，L．V．Beng．Generalreport：Evaluationoflandslidehazard，Proc．Inter．Sym．oflandslides，Lausane，Switzerland，1988
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