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。
The subsidence is a hazardous geological phenomena in the urban.The causes are complex.Based on the high-precision leveling data observed from 2013to 2017in Haikou,Hainan province,The cumulative changes of the elevation are from-30mm to 10mm and the rates are about-7mm/a^2mm/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.
作者
胡亚轩
胡久常
何照全
郑在壮
HU Ya-xuan;HU Jiu-chang;HE Zhao-quan;ZHENG Zai-zhuang(Second Crust Monitoring and Application Center,China Earthquake Administration,Xi’an 710054,China;Earthquake Administration of Hainan Province,Haikou 570203,China;Seismic Fortification Center of Haikou Municipality,Haikou 570208,China)
出处
《地质灾害与环境保护》
2020年第1期30-34,共5页
Journal of Geological Hazards and Environment Preservation
基金
国家自然科学基金面上项目(41372345)。
关键词
水准观测
地面沉降
地下水
动力学环境
海口
leveling observation
earth surface subsidence
groundwater
geodynamic environment
Haikou
