从非饱和土力学的角度，土石坝材料的特性-----外文翻译.docVIP

Eduardo E. ALONSO, Rafaela CARDOSO Behavior of materials for earth and rockfill dams: Perspective from unsaturated soil mechanics ? Higher Education Press and Springer-Verlag Berlin Heidelberg 2010 Abstract ：The basis of the design of earth and rockfill dams is focused on ensuring the stability of the structure under a set of conditions expected to occur during its life. Combined mechanical and hydraulic conditions must be considered since pore pressures develop during construction, after impoundment and in drawdown. Other instability phenomena caused by transient flow and internal erosion must be considered. The prediction of the hydromechanical behavior of traditional and non-traditional materials used in the construction of dams is therefore fundamental. The materials used for dam’s construction cover a wide range from clayey materials to rockfill. In a broad sense they are compacted materials and therefore unsaturated materials. A summary of the current level of knowledge on the behavior of raditional materials used in the construction of dams is presented in the paper. Regular compacted materials (with a significant clay fraction), rockfill and ompacted soft rocks are studied with more detail. The latter are non-traditional materials. They are analysed because their use, as well as the use of mixtures of soil and rock, is becoming more necessary for sustainability reasons. Keywords ： ams, unsaturated soil mechanics, suction, rockfill, clayey soil, mixture 1 Introduction The basis of the design of earth and rockfill dams is focused on ensuring the stability of the structure under a set of conditions expected to occur during its life. The stability of the upstream and downstream slopes must be guaranteed at the end of the construction but also during reservoir impoundment and the operational phase, including drawdown and long-term steady state conditions as a limiting case. A fundamental aspect of the analysis is the generation of pore pressures during the co