【摘要】 城市地面沉降是一种具有危害性的地质现象,且沉降成因复杂。由海南省海口地区2013～2017年多期精密水准观测资料,获取区域地壳的累积高程变化量及变化速率,分别为-30mm～10mm和-7mm/a～2mm/a。整体表现为西北部下沉和东南部上升,下沉速率较大的点为土中点。分析结果认为区域整体运动特征与动力学环境有关,点位的沉降运动推测与点位的建设环境及含水层水位变化有关。更多还原

【Abstract】 The subsidence is a hazardous geological phenomena in the urban. The causes are complex. Based on the high-precision leveling data observed from 2013 to 2017 in Haikou, Hainan province, The cumulative changes of the elevation are from-30 mm to 10 mm and the rates are about-7 mm/a ～ 2 mm/a. The overall image shows that the leveling sites in the northwest of the area subsided while the sites in the southeast uplifted. The foundation of the sites with bigger subsidence is soil. The conclusion is the regional movement is associated with dynamic environment. The subsidence may be due to the soil foundation and change of the aquifer water level.更多还原