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基于大量地下水位与地面沉降的历史监测数据,对北京东部地面沉降区第四系含水层多年的水位变化特征及其与地面沉降发展的相互关系进行分析。研究表明:1998年以来,研究区第3、4层地下水超采比较严重,是主要的地下水开采层,目前这两层地下水的降落漏斗都在管庄—通州一带;研究区地下水位变化、地下水开采强度的分布以及开采深度的变化都与地面沉降的发展具有较强相关性,地下水的开采是引起该区域地面沉降的重要原因;受地下水开采深度的影响,研究区的地面沉降在逐渐向深部发展,而且深部地层的压缩有逐渐增大的趋势。
Based on the historical monitoring data of a large number of groundwater levels and land subsidence, the paper analyzes the multi-year water level change characteristics of Quaternary aquifer in the ground subsidence area of Beijing and its relationship with land subsidence. The results show that the over-exploitation of groundwater in layers 3 and 4 of the study area is serious since 1998, and is the main underground water exploitation layer. At present, the groundwater funnels of both layers are all located in Guanzhuang-Tongzhou area; the groundwater level changes and groundwater exploitation The distribution of intensity and the variation of mining depth have a strong correlation with the development of land subsidence. The groundwater exploitation is the important reason that causes the land subsidence in this area. Due to the depth of groundwater mining, the land subsidence in the study area gradually develops to the deep , And the compression of deep strata tends to increase gradually.