| 川滇高原斜坡地带峡谷区岩溶水化学特征及演化规律 |
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| 引用本文： | 史箫笛,康小兵,许模,邓宏科.川滇高原斜坡地带峡谷区岩溶水化学特征及演化规律[J].地质学报,2019,93(11):2975-2984. |
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| 作者姓名： | 史箫笛 康小兵 许模 邓宏科 |
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| 作者单位： | 1) 地质灾害防治与地质环境保护国家重点实验室（成都理工大学)，成都，610059；2) 成都理工大学环境与土木工程学院，成都，610059,1) 地质灾害防治与地质环境保护国家重点实验室（成都理工大学)，成都，610059；2) 成都理工大学环境与土木工程学院，成都，610059,1) 地质灾害防治与地质环境保护国家重点实验室（成都理工大学)，成都，610059；2) 成都理工大学环境与土木工程学院，成都，610059,3) 中铁二院工程集团有限责任公司，成都，610031 |
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| 基金项目： | 本文为国家自然科学基金项目（编号 40672175）和中铁二院工程集团有限责任公司科研项目（编号KYY2017009(17- 17)）资助成果。 |
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| 摘 要： | 岩溶地下水不仅作为重要的生活和生产用水水源，而且作为一种重要的地质营力，对于岩溶演化史具有重要影响，对其进行水化学特征分析及演化规律研究，能够为岩溶水资源及岩溶生态环境保护提供科学依据。以川滇高原斜坡地带峡谷区岩溶地下水为研究对象，结合研究区水文地质条件，对比分析了龙爪坝河岩溶水系统和洛泽河岩溶水系统内地下水化学特征。通过常规地下水化学组分、氢氧同位素分析和水文地球化学反向模拟，识别了地下水化学类型，确定了岩溶水的主要离子来源和补给特征，判别了发生的水岩相互作用过程。研究表明：岩溶地下水以大气降水为补给来源，离子源于岩石风化作用，物质来源为灰岩、白云岩夹灰岩，水岩相互作用均受方解石、白云石和石膏沉淀及溶解作用控制，且龙爪坝河岩溶水系统内矿物饱和指数趋近饱和，岩溶发育趋于停滞，而洛泽河岩溶水系统内矿物饱和指数处于不饱和或饱和的波动态，岩溶仍然发育。
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| 关 键 词： | 斜坡区 同位素 水文地球化学 反向模拟 |
| 收稿时间： | 2019/4/25 0:00:00 |
| 修稿时间： | 2019/6/22 0:00:00 |
Hydrochemical characteristics and evolution laws of karst grounderwater in the slope zone of the canyon area, Sichuan- Yunnan Plateau |
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| SHI Xiaodi,KANG Xiaobing,XU Mo and DENG Hongke.Hydrochemical characteristics and evolution laws of karst grounderwater in the slope zone of the canyon area, Sichuan- Yunnan Plateau[J].Acta Geologica Sinica,2019,93(11):2975-2984. |
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| Authors: | SHI Xiaodi KANG Xiaobing XU Mo and DENG Hongke |
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| Affiliation: | 1) State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), Chengdu, 610059;2) College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, 610059,1) State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), Chengdu, 610059;2) College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, 610059,1) State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), Chengdu, 610059;2) College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, 610059 and 3) China Railway Eryuan Engineering Group Co. Ltd, Chengdu, 610031 |
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| Abstract: | Karst groundwater is not only an important source of water for living and production, but also an important geological force, which has a significant impact on the history of karst evolution. Study on hydrochemical features and evolution laws will provide a scientific basis for karst water resources and karst ecology protection. Taking the karst groundwater in the gorge area of the slope zone of the Sichuan- Yunnan Plateau as the research object, combined with the hydrogeological conditions of the study area, the chemical characteristics of groundwater in the karst water system of the Longzhuaba River and the karst water system of the Luoze River were compared and analyzed. Through the conventional groundwater chemical composition, hydrogen and oxygen isotope analysis and hydrogeochemical reverse simulation, this study indentifed the groundwater chemical types and defined the main ion source and recharge characteristics of karst water and the water- rock interaction process. The research shows that the karst groundwater originates mainly from atmospheric precipitation, ion source from rock weathering, and materials from limestone and dolomite limestone. The water- rock interaction is controlled by mineral calcite, dolomite and gypsum precipitation and dissolution. The mineral saturation index in the karst water system of the Longzhuaba River is close to saturation, and the karst development tends to stagnate. While the mineral saturation index in the karst water system of the Luoze River is in the state of unsaturated to saturated fluctuation, and the karst is still developing. |
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| Keywords: | slope canyon area isotope hydrogeochemistry inverse simulation |
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