通过室内试验利用有机材料、粘性土、和荷兰淤泥改善非饱和砂的表观粘聚力 ,选择五种不同类型的砂、有机材料、黑淤泥、斑脱土和高岭土做为试验材料研究非饱和状态下砂的粘聚征 ,试验结果表明 ,在非饱和状态下 ,砂会表现出一定的粘聚力 ,并且一些材料对非饱和砂的表观粘聚力具有明显的提高 Five different types of sand, organic materials, black silt, bentonite and kaolinite were selected as experimental materials to study the effect of non-saturation by using laboratory tests of organic materials, cohesive soil and Dutch silt to improve the apparent cohesion of unsaturated sands. State sand agglomeration, the test results show that in the unsaturated state, the sand will show some cohesion, and some materials on the apparent cohesion of unsaturated sand has significantly improved