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我国黄土的分布很广,面积约达60万平方公里,其中湿陷性黄土约占四分之三,遍及甘、陕、晋的大部分地区以及豫、宁、冀等部分地区。湿陷性黄土土质大多不均,结构松散,大孔排列杂乱,多虫孔,孔壁有白色碳酸盐粉末状结晶。湿陷性黄土由于其土质的结构特点以及本身的物质成分,在受水浸湿时,土体在上覆土层的自重压力或在附加压力与自重压力的共同作用下,结构迅速破坏而发生显
Loess is widely distributed in China with an area of about 600,000 square kilometers, of which collapsible loess accounts for about three-fourths of the total, covering most parts of Gansu, Shaanxi and Shanxi provinces as well as parts of Henan, Ningxia and Hebei. Collapsible loess soil mostly uneven, loose structure, large holes arranged disorderly, multi-wormhole, pore wall with white carbonate powder crystals. Collapsible loess due to its structural characteristics of the soil and its own material composition, when soaked in water, the soil in the overburden of the weight of self-weight or under the combined effect of additional pressure and gravity pressure, the rapid destruction of the structure and significant