- 责任者：Zhou Xun (School of Water Resources and Environment ; China University of Geosciences ; Beijing 100083 ; China) ; Jiang Changlong
- 刊名：Acta Geoscientica Sinica
- 出版年：2013
- 卷期：34(5)
- 关键词：卤水 ; brines
- 页码：p.610-616
- 图表：18 refs.
- 分类号：1002
- issnNo：ISSN1006-3021
- isbnNo：CN11-3474/P
Subsurface brines （including K-rich brines） in deep-seated aquifers in sedimentary basins lie under the deeply burial and sealing conditions and are lack of recharge. The brines are of extremely high hydraulic heads and are stagnant under natural conditions. Hydraulic connection does not exist between brine-bearing structures. Several parallel brine-bearing formations are superposed upon each other, and no hydraulic connection exists among the formations. The brine-bearing formations are of low porosity and permeability. The brines are mainly concentrated in anticlines, fracture zones and fault zones. The hydrochemical and physical characteristics of the brines are relatively stable during a short period of time. The storage resources of the brines are relatively large and the resources of the brines tend to decease and be exhausted under the condition of exploitation. Current status of the evaluation of subsurface brines in deep-seated aquifers in sedimentary basins and the characteristics of the brines are discussed and summarized in this paper. Some problems related to the evaluation of subsurface brines in deep-seated aquifers are analyzed and described, which include the types of brine resources in deep-seated aquifers and the selection of the corresponding evaluation methods of the brine resources as well as the generalization of the calculation domain, boundary conditions and subdivision of the permeability. The treatment of the effect of the density of the brines, the calculation of the piezometric head and the determination of the predicted drawdown of the hydraulic head for the production wells are also involved. The aim of this paper is to improve the accuracy of the evaluation of subsurface brines in deep-seated aquifers.