渝东平行岭谷区土壤的蠕移灾害及防治措施

渝东平行岭谷区土壤的蠕移，主要发生在侏罗系中自统自流井组（Ｊ１－２ｚ）地层中，在水体和重力作用下，风化岩层和上覆土层沿斜坡缓慢向下蠕移，对农地，民房及水利设备等产生严重破坏。分析测定表明研究区的粘性岩土被为低膨胀性粘性土，粘接矿物以高岭石为主，蒙脱石为次，化学成分以ＳｉＯ２胶粒含量最高，最后提出建筑物的地基处理和湿度指标控制，农田基本建设采用区域环境绿化增强土壤排水能力等方面的防治措施。

SOIL CREEP HAZARDS AND PROTECTION MEASURES OF THE PARALLELED RIDGE VALLEY OF EAST CHONGQING CITY

Soil creep takes place mostly at ZiliuJing group (J 1+2z ) of previous and middle Jurassic strata in paralleled ridge valley region of east Chongqing City. Weathering rock stratum and upper soil horizon move slowly downward along the declivity under the water and gravity action. The soil creep damages seriously farmland, road, houses and water conservancy projects. This paper employs electronic microscope, X rays and common titrimetric methods to test and analyse clay mineral type, chemical composition, swelling shrinking ratio and so on. And the clay of researched region is determinded to have lower swelling ratio, and the clay particle mineral is mostly composed by kaolinite, then montmorillonite. Silica oxide colloid content is most in chemical composition. Finally, the paper provides the protection measures of building baseland treatment, humidity index control, farmland capital construction, regional circumstance afforestation and soil draining water capacity etc.