کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5750358 1619697 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydro-geochemical paths of multi-layer groundwater system in coal mining regions - Using multivariate statistics and geochemical modeling approaches
ترجمه فارسی عنوان
مسیرهای هیدروژئوشیمیایی چند لایه سیستم های آب زیرزمینی در مناطق معدنی زغال سنگ - با استفاده از آمار چند متغیره و روش های مدل سازی ژئوشیمیایی
کلمات کلیدی
محیط آبهای زیرزمینی، فرایندهای هیدروژئوشیمیایی، مناطق ذغال سنگ، آمار چندمتغیره تکامل چند لایه، مدلسازی ژئوشیمیایی معکوس،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی
Groundwater is an important drinking water resource that requires protection in North China. Coal mining industry in the area may influence the water quality evolution. To provide primary characterization of the hydrogeochemical processes and paths that control the water quality evolution, a complex multi-layer groundwater system in a coal mining area is investigated. Multivariate statistical methods involving hierarchical cluster analysis (HCA) and principal component analysis (PCA) are applied, 6 zones and 3 new principal components are classified as major reaction zones and reaction factors. By integrating HCA and PCA with hydrogeochemical correlations analysis, potential phases, reactions and connections between various zones are presented. Carbonates minerals, gypsum, clay minerals as well as atmosphere gases - CO2, H2O and NH3 are recognized as major reactants. Mixtures, evaporation, dissolution/precipitation of minerals and cation exchange are potential reactions. Inverse modeling is finally used, and it verifies the detailed processes and diverse paths. Consequently, 4 major paths are found controlling the variations of groundwater chemical properties. Shallow and deep groundwater is connected primarily by the flow of deep groundwater up through fractures and faults into the shallow aquifers. Mining does not impact the underlying aquifers that represent the most critical groundwater resource. But controls should be taken to block the mixing processes from highly polluted mine water. The paper highlights the complex hydrogeochemical evolution of a multi-layer groundwater system under mining impact, which could be applied to further groundwater quality management in the study area, as well as most of the other coalfields in North China.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volumes 601–602, 1 December 2017, Pages 1-14
نویسندگان
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