摘要
通过对天津市宁河县1987年至2005年地下水开采量、宁河县县城第Ⅱ和第Ⅲ含水岩组地下水水位埋深变化趋势及其相对于1986年以来的累积沉降量的统计和相关线性分析后发现,天津市宁河县地面沉降的范围、沉降幅度、沉降速率和地下水的开采量有着明显的相关性,地下水的强采区、地下水位降落漏斗的中心区与地面沉降在时间和空间上具有高度的一致性。天津市宁河县地面沉降的发生、发展主要由超量开采地下水所致。
Based on the study of the tendency of the groundwater level c groundwater mining quantity and surface subsidence from 1987 to 2005 and the hange in the Ⅱ and Ⅲ aquifers in Ninghe County, Tianjing, it is suggested that there is a clear relationship between the groundwater mining quantity and the subsidence rate, range and extent. The place where the groundwater pumped strongly is inosculated with the area of the substdence center of the ground water （cone of exhaustion） and the surface subsidence. Therefore, the surface subsidence was mainly caused by the over-pumping groundwater in Ninghe County, Tianjin.
出处
《地质调查与研究》
2008年第1期16-23,共8页
Geological Survey and Research
基金
天津市宁河县综合地质调查项目研究成果(200402010)
关键词
地下水开采
地下水降落漏斗
地面沉降
措施与对策
groundwater mining
cone of exhaustion
surface subsidence
measure and countermeasure
