黄土在我国西北分布很广。黄土的状态具有两大特点:一是孔隙度高,一是含水量低。第一个特点决定着黄土的压缩性大。第二个特点决定着黄土浸水时具有湿陷性。在建筑工程中常常采用黄土做地基。在黄土中建筑建筑物时,决定建筑物稳定性的重要条件之一是黄土的沉降性及湿陷性。研究和预测在黄土上的建筑物可能发生的沉降性及湿陷性,一般是采取原状土通过渗压试验的方法来进行。这种做法往往受到设备及时间上的限制。有时 Loess is widely distributed in northwestern China. Loess status has two major characteristics: First, the porosity is high, first, low water content. The first feature determines the compressibility of the loess. The second characteristic determines that the loess has collapsibility when immersed in water. Loess is often used as a foundation in construction projects. When building buildings in loess, one of the most important conditions that determine the stability of a building is the loess’s subsidence and collapsibility. Research and prediction of subsidence and collapsibility that may occur on loess buildings are generally conducted by means of osmotic pressure testing of undisturbed soil. This practice is often limited by equipment and time. sometimes