北京东部区域地面沉降现状及其发展趋势预测

东部沉降区是北京地面沉降比较严重的沉降区之一.该区域是北京市未来发展的重点地区之一,包括了CBD及其东扩区,通州新城.通过对该区域内大量地面沉降历史观测数据、地下水位历史观测数据以及近几年的监测成果进行整理,分析总结了该区域内地面沉降发生、发展的特点及规律,并建立了适用于不同地层在多层地下水动态变化条件下的地面沉降计算方法,编制了计算程序.分析与计算结果表明:1)研究区的地面沉降总体上呈现自西向东,自北向南发展的趋势,由一个沉降中心逐渐出现多个沉降中心.2)近几年研究区的地面沉降呈现出沉降面积迅速扩大、沉降速率加快的发展趋势.3)未来5年内研究区西部地区地面沉降比较稳定,地面沉降继续向东部与南部移动.

Status and prediction of land subsidence in the eastern part of Beijing

The land subsidence areas located in the eastern part of Beijing is one of the most serious land subsidence areas of Beijing. The region is one of the key areas for urban development, including the CBD, Tongzhou new town. Based on the historically monitored data and the new data a detailed analysis was performed on the history and present situation of the land subsidence in these areas, and a settlement calculation method and computer program for different formations in multi-aquifer exploitation condition were established. The results indicate that the land subsidence center move from the west to the east and from the north to the south, and the amount of the land subsidence funnel is increasing as time progressed in the study area. Moreover, the land subsidence is increasing rapidly, and the scope of land subsidence is expanding in recent years. Finally, the land subsidence center move to the east and south continue, and the land subsidence in the western part of the study area keep a low rate in the next five years.