华南花岗岩风化壳岩土特性与崩岗侵蚀关系

Relationship Between Slope Disintegration and Rock soil Characteristics of Granite Weathering Mantle in South China

在野外调查和室内分析的基础上 ,探讨了华南花岗岩风化壳岩土特性与崩岗侵蚀的关系。花岗岩风化壳土体粗粒含量较多 ,结构疏松 ,裂隙发育 ,力学性质受水的影响显著。典型的花岗岩风化壳可划分为 5个基本层次 ,各风化层在粒度、成份和结构等方面存在明显差异 ,表现出相应的物理力学特性 。

Based on field investigation and laboratory analysis including grain size analysis, transmission electron microscopy (TEM), chemical composition and X ray diffraction (XRD), relationships between slope disintegration and rock soil characteristics of granite weathering mantle are discussed. The coarse grains take advantage in the mantle which have a loosen structure with lots of cranny, and its strength are influenced mightily by water. In general, there are 5 layers in typical granite weathering mantle with distinct differences on grain size, chemical composition and structure. Which plays a important role during forming and developing of slope disintegration.