黄骅裂谷盆地第三系深层水成因

在阐述盆地地质和含水系统、水文地质期、水压系统的定位基础上，通过建立数学模型，采用反演法、地静压力法，模拟计算了各研究层在各研究时期的砂、泥岩恢复厚度、压出水量、水交替强度。计算表明各研究层在各研究时期的压挤式水交替强度均小于1，累加值Es^2、Es^1、Ed层的大于1，Ng、Nm层的小于1；Ed层渗入水交替强度为0．44。各研究层在各研究时期渗流场的高水压带位置和流动态势具有相似性，并均以离心型流动为主要特征。水的初始与现代化学及其演化研究表明，6个研究层段均起始于不同浓度的同生沉积成因水，除Eκ^1层局部水的现代浓度比初始浓度显著降低，朝稀释淡化、反向变质的方向演化外，其他5个层段水的现代浓度比初始浓度均呈不同程度的增高，朝浓缩盐化、正向变质的地球化学方向发展，最终演化成为不同浓度的后生沉积成因水。

Tertiary Deep Water Genesis in Huanghua Rift Basin

This paper makes a quantitative study, in terms of the geologic setting and characteristics of aqueous system, partition of hydrogeological stage and types of hydraulic pressure system in Huanghua rift basin, of the recovery thickness of sandstone and mudstone, of the extrude output of water and of the intensity of groundwater exchange on each interested layer in its different periods by means of inversion and geostatic pressure and the established mathematical model. The results indicate that the intensities of sedimentary water exchange on each investigated layer in its different periods are less than 1. The cumulative values of the intensities are more than 1 in Es 2, Es 1, Ed, and less than 1 in Ng, Nm. The infiltration groundwater exchange intensity is 0.44 in Ed. Each investigated layer in its different periods is similar to each other in terms of both the location of high-pressure belt and the flow characteristics in the groundwater flow field. In addition, their major characteristics are centrifugal flow. The study of the initial and modern hydrochemistry and of their evolution shows that the groundwater in the six layers is all of the syndeposit origin in different concentrations. Comparing the modern groundwater concentration with the initial one, except for part of the water in Ek 1 layer that remarkably decrease and evolve toward the diluent and reverse metamorphic process, the concentration of groundwater in other five layers increase in different degrees and evolve toward the concentrated sallification and forward metamorphic process. Finally, they all turn into the water of the deuterogenous sedimentary origin in different concentrations.