关中盆地地下水系统的划分与特征

关中盆地是一个水文地质结构完整、含水系统与水流系统相对独立、水循环开放的地下水系统。通过概述区域水文地质结构和地下水循环特征,依据地下水含水介质的结构组合、分布特征以及地下水循环特征的不同,将关中盆地地下水系统划分为6类: 黄土台塬孔隙-裂隙含水系统、冲积平原孔隙含水系统、山前洪积平原孔隙含水系统、渭北岩溶含水系统、新近系和古近系砂泥岩互层裂隙-孔隙含水系统及基岩裂隙含水系统。文章总结分析了每种含水系统的富水性、补径排、水化学和动态特征,旨在为客观评价关中经济区水资源现状并提出水资源优化配置、开发利用和保护方案提供依据。研究成果对建设优良、宜居的生态环境和经济可持续发展具有积极的意义。

Division and characteristics of groundwater system in Guanzhong Basin

Guanzhong Basin has a groundwater system with complete hydrogeological structure, relatively independent water system and open water cycle. This paper introduces the regional hydrogeological structure and characteristics of groundwater cycle. Based on the textural association and distribution characteristics of groundwater aquatic media and the characteristics of groundwater circulation, the groundwater system in Guanzhong Basin is divided into six categories: pore-fractured water system in loess terrace like plain, pore water system in alluvial plain, pore water system in aggraded flood plain, water system in Weibei karst, Neogene and Paleogene pore-fractured water system in sand and mudstone interbedded fracture, and fracture water system in bedrock. Also the water-richness, bucket diameter, hydrochemistry and dynamic characteristics for each aqueous system are summarized. The purpose of this paper is to provide a basis for the objective evaluation of the current situation of water resources in Guanzhong Economic Zone, and for the optimal allocation of water resources, development and utilization and protection programs, which is of great significance to the construction of good and livable ecological environment and sustainable economic development.