统称为粘土的压实的细粒土壤,作为防渗隔离层(permeability barrier)的材料用在许多矿物工程项目中,如尾矿坝、堆浸场、贮存池和土坝等。这些土壤在压实时呈现非常不同的工程特性。本文对细粒土壤的渗透性、塑性以及根据含水量不同的压实性作了评价,同时论述了各类土壤弯曲性的重要性、断裂的机理以及粘土坝体防止从储存场地泄漏污染物的性能的实验判据。 Compacted fine-grained soil, collectively referred to as clay, is used as a material for permeability barriers in many mineral engineering projects, such as tailings dams, heap leaching yards, storage ponds, and earth dams. These soils exhibit very different engineering characteristics in pressing. This paper evaluates the permeability and plasticity of fine-grained soils and the compaction according to the different water content. It also discusses the importance of various types of soil bending, the mechanism of fractures, and the prevention of leakage of pollutants from storage sites by clay dams. Experimental criteria for performance.