煤炭开采后峰峰矿区奥陶系岩溶水硫酸盐演化过程研究

郝春明; 何培雍; 王 议; 侯双林; 董建芳

doi:10.11932/karst20140406

煤炭开采后峰峰矿区奥陶系岩溶水硫酸盐演化过程研究

doi: 10.11932/karst20140406

1.
中国地质环境监测院
2.
中国地质环境监测院；河北省地质环境监测总站

基金项目: 国家级地质环境监测与预报专项(项目编号：1210800000022-6)；资源城市地下水基础环境状况调查与评估(项目编号：2011A113)

计量
- 文章访问数: 1969
- HTML浏览量: 277
- PDF下载量: 1281
- 被引次数: 0
出版历程
- 发布日期: 2014-12-25

Study on the evolutionary process of sulfate concentration in Ordovician karst water after coal mining in Fengfeng mine

1.
China Institute of Geo-Environment Monitoring
2.
China Institute of Geo-Environment Monitoring；Geological Environment Monitoring Station of Hebei

摘要

摘要: 文章运用水化学和同位素水文学等手段，寻求奥陶系岩溶水硫酸盐演化过程的“指纹”，通过不同含水层间水化学、稳定同位素差异的比对，分析其与上覆含水层间的水力联系和硫动力分馏过程，阐述采矿活动影响下峰峰矿区奥陶系岩溶水硫酸盐的演化过程。研究结果表明：煤矿开采后，峰峰矿区奥陶系岩溶水硫酸盐含量普遍增高，演化特征呈现多样性，存在多种硫动力分馏过程。分馏动力主要来自矿坑水和孔隙水通过导水裂隙的渗漏（越流）补给，以及脱白云石化过程中自身蒸发岩矿物（石膏）的溶解。
- 同位素 /
- 硫酸盐 /
- 水力联系 /
- 岩溶地下水 /
- 采煤活动
Abstract: Increases in the concentration of sulfate in water from an Ordovician karst aquifer following mining activity pose a major hazard to drinking water safety. Therefore, research into the impact of mining activities on the sulfate concentration is very significant. Hydrochemistry, isotope hydrology and other methods were adopted. Hydraulic connection and sulfur kinetic fractionation processes were investigated in order to evaluate sulfate changes in the Ordovician karst aquifer due to mining activity. Fengfeng coal mine is located in the southeast of Taihang Mountain, which is next to Jiu mountain in the west, and North China Plain in the east, with a total area of 340.6 km2. Based on the characteristics of the water bearing rock, aqueous medium and burial conditions, the main aquifers are, Cambrian oolitic limestone karst fracture aquifer, Ordovician fracture karst aquifer, Taiyuan Carboniferous thin limestone fractured aquifer, Permian Shanxi formation sandstone fissure pore aquifer and Quaternary alluvial slope of aeolian sandy soil pore aquifer. The Ordovician fracture karst aquifer is the most important aquifer, with a total area was 2,404 km2 in the mine. The aquifer matrix is composed of brecciated limestone, mottled limestone, limestone and marlite, gypsum, etc, and the total aquifer thickness is 470 to 584 m. The results indicate that the sulfate concentration in the groundwater of the Ordovician karst aquifer increased after mining activities, with different characteristics and sulfur kinetic fractionation process. The main source of kinetic fractionation was groundwater seepage from pits and pore water flowing through fractures, and the ability of minerals in evaporate to dissolve had been enhanced during the de-dolomitization process. The results are useful for evaluating the evolution of sulfate in karst water in areas with similar mining activity, protecting karst water resources, and improving the management of coal resource development.
- isotope /
- sulfate /
- hydraulic connections /
- karst groundwater /
- mining activities

HTML

参考文献(19)

[1]	闫玉梅，秦鹏，吴振岭，等.峰峰矿区煤炭开采对岩溶地下水环境的影响研究［J］.中国矿业，2010，19(12):120-125.
[2]	白喜庆，吴振岭，李连娟，等.邯邢煤矿区矿床水环境问题调查评价［R］.邯郸：中国煤炭地质总局水文地质局，2010.
[3]	吴振岭，白喜庆.峰峰煤矿区岩溶地下水流场演化规律［J］.地下水，2009，31(2):23-27.
[4]	Yang Y C，Shen Z L，Weng D G，et al. Oxygen and Hydrogen Isotopes of Waters in the Ordos Basin，China: Implications for Recharge of Groundwater in the North of Cretaceous Groundwater Basin［J］.Acta Geologica Sinica，2009，83(1):103-113.
[5]	陈陆望，桂和荣，殷晓曦.深层地下水氢氧稳定同位素组成与水循环示踪［J］.煤炭学报，2008，10(33):1107-1111.
[6]	李思亮，刘丛强，陶发祥，等.碳同位素和水化学在示踪贵阳地下水碳的生物地球化学循环及污染中的应用［J］.地球化学，2004，32(2):165-170.
[7]	李义连，王焰新，张江华，等.娘子关泉域奥陶系岩溶水硫酸盐污染的地球化学模拟分析［J］.地球科学：中国地质大学学报，2000，5(25):26-30.
[8]	KU T CW，Walter L M，Coleman M L，et al. Coupling between sulfur recycling and depositional carbonate dissolution: evidence from oxygen and sulfur isotope composition of pore water sulfate，south Florida Platform，U.S.A［J］. Geochimicaet Cosmochimica Acta，1999，63(17): 2529-2546.
[9]	Ian D，Peter F，张慧(译).水文地质学中的环境同位素［M］.郑州：黄河水利出版社，2006.
[10]	桂和荣，陈陆望.矿区地下水水文地球化学演化与识别［M］.北京：地质出版社，2007.
[11]	郝春明，张进德，何培雍，等.采煤影响下峰峰矿区岩溶地下水水动力环境的演变［J］.地球与环境，2014，42(4)：465-471.
[12]	王焰新，高旭波.人类活动影响下娘子关奥陶系岩溶水系统地球化学演化［J］.中国岩溶，2009，28(2):103-110.
[13]	Moncaster S J，Bottrell S H，Tellam J H，et al. Migration and attenuation of agrochemical pollutants: insights from isotopic analysis of groundwater sulphate［J］. Journal of Contaminant Hydrology，2000，43(2):147-163.
[14]	张江华，梁永平，王维泰，等.硫同位素技术在北方岩溶水资源调查中的应用实例［J］.中国岩溶，2009，28(3):235-241.
[15]	朱莉娜，王瑞久，柯昌麟.用环境同位素研究灰场灰水对周围地下水的影响［J］.环境科学研究，2002，15(4):31-34.
[16]	翟立娟，马秀芬，唐燕波，等.我国大型煤炭基地区域含水层保护战略研究［R］.邯郸：中国煤炭地质总局水文地质局，2011:49-70.
[17]	方向清，傅耀军.采煤对峰峰矿区黑龙洞泉奥陶系岩溶水系统影响程度评价［J］.中国煤炭地质，2012，24（3）：25-30.
[18]	吴春勇.鄂尔多斯白垩系盆地地下水水化学演化的同位素示踪研究［M］.吉林大学硕士学位论文，2011.
[19]	万利勤.济南泉域岩溶地下水的示踪研究［D］.中国地质大学（北京）博士学位论文，2008.