Coal Geology & Exploration


High salinity groundwater is widely and unevenly distributed in northeast Ningdong Coalfield of Ningxia Hui Autonomous Region, and it varies greatly throughout the coalfield. This paper studies the distribution characteristics and formation mechanism of high salinity groundwater. Firstly, spatial distribution characteristics of high salinity groundwater was researched, and then, Piper trilinear graph, Gibbs graph and ion proportionality coefficient were used to investigate the formation mechanism of high salinity groundwater. The results show that groundwater salinity value varies from 0.30 g/L to 23.56 g/L, and the average value is 5.84 g/L. The proportions of fresh water, brackish water, salt water and salt water are 3.16%, 50.00%, 33.68%, 13.16% respectively. In the horizontal direction, the salinity of bedrock fissure water decreases gradually from east to west, and a high salinity anomaly zone is formed in the south of Yuanyang Lake mining area. In addition, high salinity anomaly zones occur in scattered areas of the west, north and south of the coalfield. The high salinity is related to the dissolution of gypsum, salt rock and pyrite and the long-term retention of groundwater. The mineralization gradually decreases from east to west due to the influence of the Ordos thrust nappe structure. However, Yuanyang Lake mining area is located in the transition zone of the south and north thrust systems of Ordos platform, with relatively complete folds and relatively closed groundwater environment. Thus, groundwater salinity is particularly higher than other area. In the vertical direction, from aquiferⅠ to aquiferⅤ, the groundwater salinity increase gradually. This is mainly related to the slow closure and regeneration of deep groundwater environment. The research will provide theoretical basis for the development and utilization of underground resources in Ningdong Coalfield and similar mining areas.


Ningdong Coalfield, groundwater, high salinity, spatial distribution, formation mechanism




[1] 王双明,杜麟,宋世杰. 黄河流域陕北煤矿区采动地裂缝对土壤可蚀性的影响[J]. 煤炭学报,2021,46(9):3027−3038. WANG Shuangming,DU Lin,SONG Shijie. Influence of mining ground fissures on soil erodibility in northern Shaanxi coal mining area of Yellow River Basin[J]. Journal of China Coal Society,2021,46(9):3027−3038.

[2] 王甜甜. 矿井水中典型重金属形成机理与被动处理技术研究[D]. 北京:煤炭科学研究总院,2020.

WANG Tiantian. Study on formation mechanism and passive treatment technology of typical heavy metals in mine water[D]. Beijing:China Coal Research Institute,2020.

[3] 彭苏萍,毕银丽. 黄河流域煤矿区生态环境修复关键技术与战略思考[J]. 煤炭学报,2020,45(4):1211−1221. PENG Suping,BI Yinli. Strategic consideration and core technology about environmental ecological restoration in coal mine areas in the Yellow River Basin of China[J]. Journal of China Coal Society,2020,45(4):1211−1221.

[4] LIU Zhifei,WEI Yingchun,NING Shuzheng,et al. The differences of element geochemical characteristics of the main coal seams in the Ningdong Coalfield,Ordos Basin[J]. Journal of Geochemical Exploration,2019,202:77−91.

[5] 王琪. 内蒙古河套平原地下咸淡水形成分布规律初步探讨[J]. 内蒙古农业大学学报,2009,30(4):168−171. WANG Qi. Preliminary assessment of formation and distribution of salt–fresh water in the Ordos region of Inner Mongolia[J]. Journal of Inner Mongolia Agricultural University,2009,30(4):168−171.

[6] 吴琼,梁伊,高凡,等. 新疆阿拉尔市苦咸水水化学特征、分布及成因分析[J]. 环境化学,2021,40(3):737−745. WU Qiong,LIANG Yi,GAO Fan,et al. Analysis of chemical characteristics,distribution and cause of formation of brackish water in Alar City,Xinjiang[J]. Environmental Chemistry,2021,40(3):737−745.

[7] 俄有浩,严平,李文赞,等. 中国内陆干旱、半干旱区苦咸水分布特征[J]. 中国沙漠,2014,34(2):565−573. E Youhao,YAN Ping,LI Wenzan,et al. Characteristics and distribution of brackish water in arid and semi−arid interior of China[J]. Journal of Desert Research,2014,34(2):565−573.

[8] 林丽,曾妍妍,周金龙,等. 新疆叶尔羌河流域浅层地下水化学特征及形成机制[J]. 干旱区资源与环境,2020,34(6):146−152. LIN Li,ZENG Yanyan,ZHOU Jinlong,et al. Hydrochemical characteristics and formation mechanism of shallow groundwater in the Yarkant River Basin,Xinjiang[J]. Journal of Arid Land Resources and Environment,2020,34(6):146−152.

[9] 吴丁丁,姚震,贾凤超,等. 新疆哈密盆地地下水水化学特征及成因分析[J]. 干旱区资源与环境,2020,34(7):133−141. WU Dingding,YAO Zhen,JIA Fengchao,et al. Hydro−geochemical characteristics and genetic analysis of groundwater in Hami Basin,Xinjiang[J]. Journal of Arid Land Resources and Environment,2020,34(7):133−141.

[10] 何绪文,胡滇建,胡振玉,等. 煤矿高矿化度矿井水处理技术研究[J]. 煤炭科学技术,2002,30(8):38−41. HE Xuwen,HU Dianjian,HU Zhenyu,et al. Research on technology for high mineralized mine water treatment[J]. Coal Science and Technology,2002,30(8):38−41.

[11] 王菁,孟祥周,陈玲,等. 苦咸水成因及其淡化技术研究进展[J]. 甘肃农业科技,2010(7):39−42. WANG Jing,MENG Xiangzhou,CHEN Ling,et al. Advances in causes of brackish water and desalination technology[J]. Gansu Agricultural Science and Technology,2010(7):39−42.

[12] 靳德武,葛光荣,张全,等. 高矿化度矿井水节能脱盐新技术[J]. 煤炭科学技术,2018,46(9):12−18. JIN Dewu,GE Guangrong,ZHANG Quan,et al. New energy−saving desalination technology of highly−mineralized mine water[J]. Coal Science and Technology,2018,46(9):12−18.

[13] LAUTZ L,HOKE G D,LU Zunli,et al. Using discriminant analysis to determine sources of salinity in shallow groundwater prior to hydraulic fracturing[J]. Environmental Science and Technology,2014,48(16):9061−9069.

[14] 孙月,毛晓敏,杨秀英,等. 西北灌区地下水矿化度变化及其对作物的影响[J]. 农业工程学报,2010,26(2):103−108. SUN Yue,MAO Xiaomin,YANG Xiuying,et al. Variation of groundwater salinity and its influence on crops in irrigation area of northwest China[J]. Transactions of the Chinese Society of Agricultural Engineering,2010,26(2):103−108.

[15] 张人权,梁杏,靳孟贵,等. 水文地质学基础[M]. 北京:地质出版社,2018.

[16] 侯光才,张茂省,刘方,等. 鄂尔多斯盆地地下水勘查研究[M]. 北京:地质出版社,2008.

[17] 胡彩萍,王楠,宋亮,等. 济南西北部碳酸盐岩热储浅埋区热异常机理研究[J]. 地质学报,2019,93(增刊1):178−183. HU Caiping,WANG Nan,SONG Liang,et al. Thermal anomaly mechanism of carbonate rock thermal storage in the shallow buried areas of northwestern Jinan[J]. Acta Geologica Sinica,2019,93(Sup.1):178−183.

[18] 张进,马宗晋,任文军. 鄂尔多斯西缘逆冲褶皱带构造特征及其南北差异的形成机制[J]. 地质学报,2004,78(5):600−611. ZHANG Jin,MA Zongjin,REN Wenjun. Tectonic characteristics of the western Ordos thrust–fold belt and the causes for its north–south segmentation[J]. Acta Geologica Sinica,2004,78(5):600−611.

[19] 曹代勇,徐浩,刘亢,等. 鄂尔多斯盆地西缘煤田构造演化及其控制因素[J]. 地质科学,2015,50(2):410−427. CAO Daiyong,XU Hao,LIU Kang,et al. Coalfield tectonic evolution and its controlling factors at the western margin of Ordos Basin[J]. Chinese Journal of Geology,2015,50(2):410−427.

[20] 马志凯,高科飞,徐浩,等. 宁东地区煤层构造形态空间分析[J]. 中国煤炭地质,2014,26(8):99−103. MA Zhikai,GAO Kefei,XU Hao,et al. Coal seam structural form spatial analysis in eastern Ningxia area[J]. Coal Geology of China,2014,26(8):99−103.

[21] 冯洁. 宁东煤炭资源开采对地下水的影响研究[D]. 西安:西安科技大学,2012.

FENG Jie. Influence of coal mining on the groundwater in eastern Ningxia Hui autonomous region[D]. Xi’an:Xi’an University of Science and Technology,2012.



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