摘要
天津地区地面沉降多年研究经验表明地下水开采是引起地面沉降的主要原因.针对天津地面沉降隐蔽性且危害较大,尤其为保证生命线工程的安全,需要计算区域地下水开采引起地面沉降的影响距离,从而为压采、减采地下水提供依据.本次针对京津城际线路经过的武清区内地下水开采情况,利用地下水流模拟VISUALMODFLOW软件,建立地下水流场模型,由地下水流场计算不同距离水位值.通过地面沉降分层标数据统计出的比单位变形量计算地下水开采引起的地面沉降量.所谓比单位变形量是指1m厚的地层,在水位下降1m时,引起的地层变形量即地面沉降量.
Many years of research Land subsidence experience has shown that groundwater exploitation is the main reason in Tianjin area. Land subsidence in Tianjin has hidden and the great harm. in particular,to ensure the safety of lifeline engineering,we need to calculate the regional land subsidence caused by groundwater exploitation in the impact of distance,so as to pressure and reducing groundwater mining provide a basis. This paper selected Wuqing district that the route of the Beijing-Tianjin inter-city has through. Using VISUAL MODFLOW groundwater flow simulation software,we have established the exploitation of groundwater flow model. Groundwater flow field is calculation the value of different distances. Ratio unit deformation amount that is land subsidence in a layered statistical is calculated the land subsidence by exploitation ground water. The so-called unit of deformation is more than 1m thick strata,1m drop in water level when the amount of ground deformation caused by the amount of land subsidence.
出处
《河北建筑工程学院学报》
CAS
2011年第4期83-87,共5页
Journal of Hebei Institute of Architecture and Civil Engineering
关键词
数值模拟
地面沉降
影响距离
比单位变形量
Numerical Simulation
Ground Subsidence
Influence Distance
Ratio Unit Deformation Amount
