干旱区生态环境知识资源中心(Arid): 宁南清水河盆地地下水循环特征与苦咸水成因

Arid

	宁南清水河盆地地下水循环特征与苦咸水成因
其他题名	A study of the characteristics of groundwater circulation and the formation of bitter and saline groundwater in the Qingshuihe Basin in the southern Ningxia
	李向全 1; 余秋生 1; 侯新伟 2; 张莉 2
ISSN	1000-3665
出版年	2006
卷号	33 期号:1 页码:46-51
中文摘要	奉义以宁南清水河断陷盆地为例，研究西北干旱区储水盆地水循环特征与苦咸水成因机制。通过环境同位素特征分析，水化学模拟计算以及水文地质控制因素分析，阐明研究区地下水主要由大气降水补给形成，地表水难以形成持续性补给源；清水河平原地下水从形成上划分为：浅层现代水、深层古水、混合水。现状开采条件下，浅层现代水与深层占水的定量转化关系为山前洪积扇地下水7．6：2．4，平原下游地下水3，2：6．8，平原丰要开采区地下水5．2：4．8～6．6：3．4；山前洪积扇和冲积平原浅层地下水循环时间为7－28年，下游平原深层地下水循环时间为300年以上，上游冲积平原中深层地下水，总体上介于以上二者之间。各主要开采区，可更新能力在人工开采条件下明显增强，时间为60～75年；研究区苦咸水主要是地下水溶解了含水层介质中大昔的膏盐，矿化度增高所致。
英文摘要	As a case study of a groundwater system in the Qingshuihe Basin in the southern Ningxia, the characteristics of groundwater circulation and the formation of bitter and saline groundwater in the western arid regions in China are analyzed in this paper. The isotopic techniques, geochemistry model and hydrogeology factor analysis have been used in the research. The results show that the groundwater mainly originates from precipitation. Recharge from surface water to the groundwater is very weak. Groundwater in this area can be divided into young shallow groundwater, old deep groundwater and their mixture. Under the present conditions of the groundwater pumping, the flow exchange between the shallow and deep groundwater in the alluvial fan, the lower reach plain and the main groundwater pumping areas are respectively 7.6：2.4, 3.2：6.8 and 5.2 ： 4.8 to 6.6：3.4. The residence time of the shallow groundwater in the alluvial fan and alluvial plain ranges from 7 to 28 years. The residence time of the deep groundwater in the lower reach plain is over 300 years. The renewability of the deep groundwater in the upper reach plain is between the above two kinds of groundwater. Under the present conditions of the groundwater explitation, the renewability of the grourldwater in the main groundwater pumping areas becomes obviously stronger, and its residence time varies from 60 to 75 years. Groundwater salinization in this area is mainly attributed to the dissolution of sulphate and chloride in the aquifer.
中文关键词	地下水 ; 水循环 ; 更新能力 ; 苦咸水 ; 同位素
英文关键词	groundwater groundwater circulation renewability bitter and saline groundwater isotope
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:2239921
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220205
作者单位	1.同济大学地下建筑与工程系, 上海 200092, 中国; 2.中国地质科学院水文地质环境地质研究所, 正定, 河北 050803, 中国
推荐引用方式 GB/T 7714	李向全,余秋生,侯新伟,等. 宁南清水河盆地地下水循环特征与苦咸水成因[J],2006,33(1):46-51.
APA	李向全,余秋生,侯新伟,&张莉.(2006).宁南清水河盆地地下水循环特征与苦咸水成因.,33(1),46-51.
MLA	李向全,et al."宁南清水河盆地地下水循环特征与苦咸水成因".33.1(2006):46-51.