地理科学

地理科学 ›› 1998, Vol. 18 ›› Issue (4): 387-392.doi: 10.13249/j.cnki.sgs.1998.04.387

• 研究报道 • 上一篇    

渝东平行岭谷区土壤的蠕移灾害及防治措施

徐茂其1, 张安明1, 管志宇2, 徐维2   

  1. 1. 西南师范大学地理系, 重庆 400715;
    2. 第三军医大学图书馆, 重庆 400038
  • 收稿日期:1997-07-14 修回日期:1997-12-01 出版日期:1998-07-20 发布日期:1998-07-20

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

Xu Maoqi1, Zhang Anming1, Guan Zhiyu2, Xu Wei2   

  1. 1. Geography Department of Southwest China Normal University, Chongqing 400715;
    2. Library of Third Military Medical University, Chongqing 400038
  • Received:1997-07-14 Revised:1997-12-01 Online:1998-07-20 Published:1998-07-20

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摘要： 渝东平行岭谷区土壤的蠕移,主要发生在侏罗系下中统自流井组(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、民房及水利设施等产生严重破坏。分析测定表明研究区的粘性岩土被为低膨胀性粘性土,粘粒矿物以高岭石为主,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、农田基本建设及采用区域环境绿化增强土壤排水能力等方面的防治措施。

Abstract: Soil creep takes place mostly at ZiliuJing group (J1+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.

中图分类号: 

  • P931.1