| 三峡库区泥灰质岩石及其残坡积土化学成分及粘土矿物的定量研究 |
| |
| 引用本文： | 张加桂,曲永新.三峡库区泥灰质岩石及其残坡积土化学成分及粘土矿物的定量研究[J].地质论评,2005,51(2):219-224. |
| |
| 作者姓名： | 张加桂 曲永新 |
| |
| 作者单位： | 1. 中国地质科学院地质力学研究所,北京,100081;中国地质环境监测院,北京,100081
2. 中国科学院地质与地球物理研究所,北京,100029 |
| |
| 基金项目： | 三峡移民开发局基金项目 (编号 970 7,990 4)资助的部分成果。 |
| |
| 摘 要： | 由于二峡库区三叠系巴东组(T2b)泥灰质岩石特殊的化学矿物组成和所处亚热带湿热环境，决定了三峡库区移民迁建场地工程地质环境的复杂性。通过泥灰质岩石及其不同风化岩和残坡积土的化学成分、粘土矿物成分定量研究和扫描电镜观察，揭示了CaCOs溶蚀和粘土矿物富集过程及粘土矿物的复杂成分，发现了风化过程中伊利石()向伊利石／蒙脱石(I／S)混层粘上矿物的转化，解释了岩土工程性质恶化的原因，从而提高了地质研究和地质灾害研究的水平。
|
| 关 键 词： | 泥灰质岩石 粘土矿物 定量研究 化学成分 三峡库区 工程地质环境 扫描电镜观察 岩土工程性质 湿热环境 矿物组成 移民迁建 矿物成分 富集过程 风化过程 灾害研究 地质研究 伊利石 亚热带 三叠系 复杂性 风化岩 蒙脱石 溶蚀 |
A Quantitative Research on the Chemical Composition and Clay Minerals in Marly Stones and Their Residuals in the Three Gorges Reservoir Region |
| |
| ZHANG Jiagui,QU Yongxin Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing, China Institute of Geo-environmental Monitoring,Beijing.A Quantitative Research on the Chemical Composition and Clay Minerals in Marly Stones and Their Residuals in the Three Gorges Reservoir Region[J].Geological Review,2005,51(2):219-224. |
| |
| Authors: | ZHANG Jiagui QU Yongxin Institute of Geomechanics Chinese Academy of Geological Sciences Beijing China Institute of Geo-environmental Monitoring Beijing |
| |
| Institution: | ZHANG Jiagui,QU Yongxin Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing, China Institute of Geo-environmental Monitoring,Beijing, Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing |
| |
| Abstract: | The special chemical and mineral compositions of marly stones of the Triassic Badong Formation (T 2b) and the moist-hot subtropic environment have resulted in the complexity of engineering geological environment of the resettlement site in the Three Gorges Reservoir region. With a quantitative research on the chemical and clay compositions of marly stones, their weathering rocks and residuals, as well as SEM observations, the process of dissolution of CaCO 3 and concentration of clay minerals with complex components has been disclosed, and the conversion of illite (I) to mixed-layer illite/montmorillonite (I/S) discovered, which explain the reason for deterioration of geotechnical properties of the rocks and soils, thereby enhancing the level of geological and geohazards researches. |
| |
| Keywords: | marly stones mixed-layer mineral expansive clay mineral Three Gorges Reservoir region |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地质论评》浏览原始摘要信息 |
| 点击此处可从《地质论评》下载免费的PDF全文 |
