摘要
地面沉降产生的地质环境问题愈发突出,严重制约城市经济发展。针对这一问题,本文以华北平原某地面沉降区为例,利用有限元软件对该地区进行地面沉降数值模拟研究。在对研究区水文地质条件进行调查的基础上,分析地下水水位监测数据,并建立相应的地面沉降力学模型,对该地区地面沉降进行三维应变模拟。研究结果表明:(1)研究区地面沉降主要是由于地下水的过度开采引起的,并且地面沉降量与地下水开采强度整体呈正相关;(2)在过去20 a间,地下水水位下降了10~15 m,地面沉降值在0.1~0.5 m之间,沉降范围半径约18 km。研究结果对于预测该地区地面沉降发展趋势具有一定的参考意义。
The geological environment problems caused by land subsidence are becoming more and more prominent, which seriously restricts the development of urban economy. To solve this problem, taking a plain land subsidence area in North China as an example, this paper uses finite element software to simulate the land subsidence in this area. Based on the investigation of hydrogeological conditions in the study area, the monitoring data of groundwater level are analyzed, and the corresponding mechanical model of land subsidence is established to simulate the three-dimensionalstrain of land subsidence in this area. The results show that:(1) the land subsidence in the study area is mainly caused by the over exploitation of groundwater, and the land subsidence is positively correlated with the overall exploitation intensity of groundwater.(2) In the past 20 years, the groundwater level has decreased by 10~15 m, the value of land subsidence is between 0.1 m and 0.5 m, and the settlement range radius is about 18 km. The research results have certain reference significance for predicting the development trend of land subsidence in this area.
作者
秦壮
QIN Zhuang(Shijiazhuang Hydrological Survey and research center,Hebei province,Shijiazhuang 050000,China)
出处
《地下水》
2022年第6期152-154,共3页
Ground water
关键词
地面沉降
数值模拟
地下水
力学模型
Land subsidence
Numerical simulation
Groundwater
Mechanical model
