风化土料修建高坝的可行性

Possibility of Using Weathered Materials to Construct High Dams

本文以自然混合料和一种人工掺配料为代表,简单介绍了龙滩水电站工程风化土料现场碾压试验的部份成果。通过对风化土料力学性质、特别是强度特性的分析,说明风化土料属于砾石土范围,力学性质能满足填筑高土石坝的要求,是一种良好的筑坝材料。建议用指数方程表示抗剪强度,在稳定分析中指数方程的参数可以换算为c,(?)值。

This paper presents briefly part of the field test fill results of the representative naturally-mixed and artificially-mixed weathered materials at longtan hydroelectric project site. Analysis of the mechanical properties, in particular the strength properties of the weathered materials shows that the weathered materials, whose mechanical properties satisfy the requirements for high embankment dams, belong to the type of gravel soil. It is recommended to use an exponential equation to express the shear strength and the parameters of the exponential equation may be transformed into c and values in the stability analysis.