地下水流场稳定区动静载荷差异模式下地面沉降响应机理

北京区域地面沉降主要是地下水长期超量开采、高密度城市建筑等静载荷、地下-地表立体交通网络形成的动载荷，共同作用的结果。现阶段，在地下水流场相对稳定区域，城市快速发展过程中急剧增加的动静载荷，是区域地面沉降最为活跃的诱发因素。.针对此问题，选取北京地下水流场相对稳定区域为研究区，分解、量化研究动静载荷差异模式下地面沉降演化特征及其响应机理。融合PS和小基线InSAR技术获取地面形变场时序信息，采用空间数据挖掘方法评价InSAR测量结果的不确定性；综合遥感、GIS空间分析技术，结合区域水文地质条件和不同尺度动静载荷时空差异信息，揭示动静载荷时空差异模式下地面沉降响应机理，为大都市复杂系统下的地面沉降调控提供科学依据与技术方法。

The regional land subsidence in Beijing is caused by long-term excessive exploitation of groundwater, high-density urban buildings(static load)、underground-surface transportation network(dynamic load). At the present stage, in relatively stable groundwater seepage field area, the dynamic and static load increased dramatically in the process of rapid development of the city becomes the most active induced factor for regional land subsidence. .Aiming at this problem, we choose a typical study area in Beijing which the groundwater seepage field is relatively stable, researching land subsidence evolution characteristics and mechanism induced by difference mode of static and dynamic load quantitatively and systematically. By merging PS and small baselines InSAR technology to acquire land deformation field information and using spatial data mining to evaluate uncertainty of InSAR measurement. Then, we apply multisource remote sensing technique, GIS spatial analysis technique, considering regional hydrogeological conditions and difference information of static and dynamic load.At last, land subsidence mechanism induced by different mode of static and dynamic load are revealed. It provides the theoretic basis and technology for controlling of land subsidence under urban complex system.