有一种黄土(湿陷性黄土),它在自重压力与建筑物附加压力的共同作用下,当受水浸湿时,其结构迅速被破坏,强度迅速降低,发生显著下沉。这种黄土在新疆到处可见。 湿陷性黄土属粉土状亚粘土或轻亚粘土,其颗粒大小以0.05—0.01毫米为主,占总重的50—70％,小于0.005毫米的土粒较少,大于0.1毫米的细砂颗粒在5％以内。湿陷性黄土是在干旱气候条件下形成的,含 There is a kind of loess (collapsible loess), which under the joint action of self-weight pressure and additional pressure of the building, when wetted by water, its structure is rapidly destroyed, the strength is rapidly reduced, and a significant sinking takes place. This loess can be seen everywhere in Xinjiang. Collapsible loess is a silty clay or light-loam, with a particle size of 0.05-0.01 mm, accounting for 50-70% of the total weight, less soil particles less than 0.005 mm, fine sand more than 0.1 mm Particles within 5%. Collapsible loess is formed under arid climatic conditions, including