邵阳市区红粘土特征与环境工程地质问题

Characteristics of Red Clay and Problems of Environment and Engineering Geology in the Downtown of Shaoyang City

红粘土系碳酸盐岩的红土化残坡积物，具有独特的结构构造和物理力学性质；并具裂隙发育较强的收缩性，与基岩接触处往往可见土洞存在。人类在红粘土区进行工程──经济活动时，往往引起边坡失稳，地面塌陷、水土流失等环境工程地质问题。本文分析了这些问题产生的原因，提出了防治措施。

Red clay,that is,the eluvial and slope soil,produced by the laterization of carbonate rocks,has its unique texture,structure,physic and mechanical properties,and tbe deveIopment of fractures and strong contraction, Soil caves at the contact zone with the bed rocks are not uncommon,Unstability of slopes,the coL-lapse of ground surface and soilerosion,in other words,the problems of environment and engineering geology re-sult quite often from the human activities of economy and construction projects. After having analyzed the origin of these problems , this paper reconunends the measures to provent and control them.