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利用华北地区承压井水位资料反演含水层体应变
杨柳1, 马建英1, 曹井泉1, 邵永新1, 刘文兵1,2
1.天津市地震局,天津市河西区友谊路19 号300201;2.中国地震局地球物理研究所,北京100081
摘要:
承压井水位的变化反映了含水层孔隙压力的变化,而含水层孔隙压力的变化与含水层所受的压力状态有密切的关系。本文利用华北地区反应固体潮较好的承压井水位资料,通过计算各井孔的潮汐因子并提取有效的水位趋势信息,反演了华北地区现有承压井孔含水层体应变,并绘制了2009 ~ 2012 年半年尺度的等值线图。结果显示,本文计算结果能在一定程度上反映出华北地区深层的应力应变状态。
关键词:  华北地区  水位  潮汐因子  体应变
DOI:
分类号:
基金项目:2013 年度震情跟踪合同制定向工作任务( 2013020307 ) 及2014 年度地震科技星火计划项目(XH14005Y)共同资助
Inversion of the volumetric strain of aquifer according to the tidal effect of groundwater in the North China region
Yang Liu1, Ma Jianying1, Cao Jingquan1, Shao Yongxin1, Liu Wenbing1,2
1.Earthquake Administration of Tianjin Municipality,Tianjin 300201,China;2.Institute of Geophysics,CEA,Beijing 100081,China
Abstract:
The change of the confined aquifer level reflects the pore pressure change,and the pore pressure change of the aquifer is closely related to the aquifer pressure. The paper used the tidal response of the well water level data in the North China region,calculated the tidal factor of each well and extracted the effective water trend information. Then we inverted the volumetric strains of existing confined aquifer well in the North China region,and drew the contour maps on the basis of half a year from 2009 to 2012. Results show that it can reflect the deep state of stress and strain to a certain extent in the North China region.
Key words:  North China region  Water level  Tidal factor  Volumetric strain