土体渗透性影响因素--以普定陈旗堡为例  

The influence factors of soil permeability in Chenqibao village of Puding County

作　　者：陈明珠[1] 阎长虹[1] 王玉英[1] 詹启伟[1] 郭军辉[1] 郑军[1] 陈喜[2] 

机构地区：[1]南京大学地球科学系,南京210093 [2]河海大学水文水资源及水利工程科学国家重点实验室,南京210098

出　　处：《水文地质工程地质》2008年第4期66-70,共5页Hydrogeology & Engineering Geology

基　　金：国家重大基础研究(973)项目(2006CB403204)

摘　　要：贵州是我国西南典型岩溶发育地区,平坦地形及谷地等地段第四系分布广泛,但其厚度不大且变化甚剧。该地区土壤瘠薄、土体流失严重,生态环境脆弱,导致这一地区快速石漠化。本文以贵州普定县陈旗堡这一小型水文地质单元为例,选取典型试验点,取样并进行现场及室内试验,研究岩溶地区土体物质成分、物理力学性质及土壤渗透特性。文中最后分析了土体成因、矿物成分对渗透性的影响,得出该地区粉质粘土渗透系数与孔隙比的数学关系,以期为水土保持、生态环境治理提供理论支持。Guizhou Province is one of the provinces with typical karst. The Quaternary is widely distributed in the surface of the fiat terrain and valley while the thickness variates strongly. The soil is infertile and the soil erosion is serious, which leads to the rapid rock desertification and fragile ecological environment in this region. Takes the small hydrogeological unit in Chenqibao village of Puding Country as an example, there are sampled soil on typical test points, and then, did field and indoor tests. The authers studied the material composition , the basic physico-mechanical properties and permeability of the soil. In the end, we got the permeability coefficient, and also analyzed the origin and the minerals of soil, the permeability coefficient. Meanwhile, we gains the relationship between the permeability coefficient and void ratio of the soil in this region. This work provides theoretical data supporting soil and water conservation and the ecological environment treatment.

关 键 词：普定县陈旗堡 石漠化 物质成分 渗透系数 

分 类 号：P642.116[天文地球—工程地质学] TU411.4[天文地球—地质矿产勘探]