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陇东白垩系盆地地处甘肃省陇东黄土高原地区。盆地内蕴藏有丰富的地下水资源,然在特定的地理环境及地质构造背景条件下,地下水化学特征变化复杂。对陇东白垩系盆地保安群地下水的水化学特征进行分析研究,得出:盆地内划分的白垩系三层含水岩组水化学特征及分布规律各具特征,整个盆地内地下水水化学场存在一个大致以马莲河为中心、由周边向中部的水平分带,TDS从盆地东西两侧向中心由低渐高;而垂直分带规律则根据水动力特征,分为水交替强烈带、水交替缓慢带和水交替极缓慢带,各带的水化学特征也不相同。
Longdong Cretaceous basin is located in Gansu Longdong Loess Plateau. There are abundant groundwater resources in the basin. However, the chemical characteristics of groundwater are complicated to change under the conditions of specific geographical environment and geological structure. Based on the analysis of the hydrochemical characteristics of the groundwater in the Baoan colony in the Eastern Gansu Cretaceous, it is concluded that the hydrochemical characteristics and distribution of the Cretaceous three-layer aquifer in the basin have their own characteristics. There is one Roughly centered on the Malian River and zonally distributed from the periphery to the central part of the basin. The TDS changes from low to high at both sides of the basin from the east to the west of the basin. The vertical zoning law is divided into strong alternating water zones and alternating water slowly zones Alternating very slowly with water, the water chemistry of each zone is not the same.