郑州市地面沉降分布特征及机理研究

Study on Distribution Characteristics and Mechanism of Land Subsidence in Zhengzhou City

针对郑州市地面沉降机理研究仍然比较薄弱的问题,本文提出了结合InSAR和水准技术获取郑州市地面沉降分布特征,得出郑州市的地面沉降主要分布在研究区的北部;利用GIS空间分析了地貌单元、地层覆盖、构造以及地下水与地面沉降直接的耦合关系,认为冲积平原的地面沉降最为严重,全新统中段冲积层地面沉降最为严重,老鸭陈断裂以东地面沉降比较严重,中深层地下水开采是郑州市地面沉降的主要原因。

The research on the mechanism of land subsidence in Zhengzhou City is still relatively weak.This paper proposes the combination of InSAR and leveling technology to obtain the distribution characteristics of land subsidence in Zhengzhou City.It is concluded that the land subsidence in Zhengzhou City is mainly distributed in the northern part of the study area.The GIS spatial analysis of the geomorphic unit,stratigraphic coverage,structure and the direct coupling relationship between groundwater and land subsidence It is considered that the ground subsidence of the alluvial plain is the most serious.The ground subsidence of the alluvial strata in the middle part of the Neogene.The ground subsidence is more serious in the east of the Laoyachen fault Middle and deep groundwater exploitation is the main cause of land subsidence in Zhengzhou City.