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中文摘要：
利用永久散射体干涉测量（PSInSAR）技术获取北京市地铁一号线传媒大学-八里桥站的沉降速率及演化特征,并采用云模型实现了地面沉降定量信息与定性概念的自然转换,以此评价地面沉降的不均匀性和稳定性,得到以下结论：1）地面沉降在地铁线南北两侧存在较大的不均匀性,且沿地铁线的地面沉降也具有较大的不一致性。整个实验区的沉降速率在0.67~60.91mm/a之间;2）对2010-2012年研究区PS点沉降量的数字特征（Ex,En,He）进行分析表明,三年沉降量、平均沉降水平均较低;沉降量值离散程度较小但在空间分布上仍呈现一定不均匀性;该研究区沉降虽整体处于稳定状态,但稳定性在减弱,沉降有增大的趋势。
英文摘要：
In this paper,permanent scatters interferometry（PSInSAR）technology is used to obtain land subsidence rate and its distribution in Beijing Subway line 1from Communication University to Baliqiao station.By using the method of cloud model,the natural transformation between quantitative information and qualitative conception is achieved,and then the inhomogeneity and stability of land subsidence is evaluated.The results show that：1）Differential land subsidence is occurred in north and south of subway lines,and along it land subsidence also has a large inconsistency.Land subsidence rate ranges from 0.67 mm/a to60.91mm/a;2）The results analyzed by numerical characteristics（Ex,En,He）from 2010 to 2012show that the expectation values of subsidence are small;dispersion degree of subsidence is low and it also shows the unevenness in spatial distribution;the subsidence in the study area is generally stable,but it has a tendency to increase.
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