CAJ | 학술논문

陇东盆地位于鄂尔多斯盆地西南部，形成于白垩世，受后期构造影响，由原生的封闭盆地变成了现今开放的自流水盆地含水系统。根据含水层的时空分布特征，可将陇东盆地分为第四系含水系统和白垩系含水系统两大系统；根据含水介质特征，在平面上可将陇东盆地地下水划分为白垩系碎屑岩类裂隙水、黄土孔隙裂隙水、河谷松散岩类孔隙水三大类型，垂向上黄土、河谷含水系统与白垩系含水系统不同含水岩组在空间上相叠置，其中黄土塬潜水、河谷潜水和白垩系深层承压水是具有供水意义的含水子系统。黄土塬潜水是独立的含水系统，白垩系深层承压水-潜水和河谷潜水形成了河流-盆地循环系统。盆地深层承压水径流缓慢，因此存在的深层淡水资源十分宝贵，可能属于不可再生的。
롱동분지위우악이다사분지서남부，형성우백성세，수후기구조영향，유원생적봉폐분지변성료현금개방적자류수분지함수계통。근거함수층적시공분포특정，가장롱동분지분위제사계함수계통화백성계함수계통량대계통；근거함수개질특정，재평면상가장롱동분지지하수화분위백성계쇄설암류렬극수、황토공극렬극수、하곡송산암류공극수삼대류형，수향상황토、하곡함수계통여백성계함수계통불동함수암조재공간상상첩치，기중황토원잠수、하곡잠수화백성계심층승압수시구유공수의의적함수자계통。황토원잠수시독립적함수계통，백성계심층승압수-잠수화하곡잠수형성료하류-분지순배계통。분지심층승압수경류완만，인차존재적심층담수자원십분보귀，가능속우불가재생적。
Longdong basin,formed in the Cretaceous is located in the southwest of Erdos basin. Controlled by the tectonic evolution,it evolves from a native closed basin to an open artesian basin at present. It can be divided into Quaternary aquifer system and Cretaceous aquifer system by the characteristics of temporal and spatial distribution of aquifer. According to the characteristics of water bearing media,in the plane of Longdong basin groundwater can be divided into three types of Cretaceous clastic rock fissure water,loess pore fissure water and Kotani Matsu rock pore wa-ter. In the vertical direction,the different water bearing formations of valley loess aquifer system and Cretaceous aquifer system are in space super-imposition,of which,the unconfined water of loess tableland and valley and Cretaceous deep confined water are water subsystems with water supply significance. The unconfined water of loess tableland is an independent aqueous system and the Cretaceous deep confined water-unconfined water and valley unconfined water formed the circulatory system of river-basin. The runoff of deep confined water basin is slow,so the existence of deep fresh water resources is very valuable and may belong to non renewable.