摘要
通过地球物理勘探和地下水动态研究,认为柏乡地裂缝主要是过量开采地下水引起的。过量开采地下水导致了该地区大面积的地面沉降,地层的差异沉降诱发了地裂缝;大量降水造成表层土软化,有些表层土随雨水流入下面的裂缝中,使地裂缝显现出来。
Earth fissures occurs in Hengshui, Baixiang, Wen＇an, Anping, Xianghe and Bazhou in Hebei Province in summer and autumn. The earth fissure at Baixiang at Xingtai is as long as 8km. This paper reveals that the Baixiang earth fissure was caused owing to groundwater overdrafts through general combination of geophysical exploration data and ground water level analysis. Over-extraction of groundwater had resulted in large-area land subsidence in this area. The difference in land subsidence occruing at both sides of the former faults finally conduced earth fissure in Baixiang County. At the same time, when superficial earth being intenerated by large amount of meteoric precipitation in Hebei Plain filtered into earth fissure underlying the land surface following the rain water, the Baixiang earth fissure finally emerged on the land surface.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2010年第2期135-138,共4页
Hydrogeology & Engineering Geology
基金
中国地质调查局地质大调查项目(1212010540906)
关键词
地裂缝
地球物理勘探
地下水动态
earth fissure
geophysical exploration
change in groundwater level
