深厚湿陷性黄土地基干灰场设计分析

黄土湿陷会导致坝基沉陷、坝体开裂等严重影响灰场坝体运行的病害。本文通过分析对黄土产生湿陷的内、外因素分析，认为产生湿陷性的内因是黄土的结构性，外因是浸水与压力，通过一定的排水措施和防水措施可以避免黄土地基浸水湿陷。同时结合实际工程，阐述了在深厚湿陷性黄土地基上设计干灰场的思路，给今后相同地质条件的下相似工程的设计提供有意的参考和借鉴。

Design of dry ash yard on collapse loess with large thickness

With the increasing of water content, the collapse loess foundation will settle greatly, and the cracks generate, what is harmful to the operation of ash yard. This paper analyzes the influencing factors of collapse loess, it shows that two necessary factors for the loess to collapse, one is the structure of loess, the other is the water and confining stresses. So water preventing can protect the loess against collapse. With an actual project, this paper illustrates the design schedule of dry ash yard on collapse loess with large thickness, and it is helpful to the design of similar project with the same geological condition.