雄安新区地面沉降大型沙槽物理模型试验数据

为了揭示雄安新区地下水开采诱发地面沉降的特征与规律，本项目设计了大型沙槽物理模型试验，通过抽水与回灌模拟水位的变化，并研究抽水和回灌对地面变形的影响。主要数据内容如下：①大型沙槽物理模型试验模拟系统介绍文件，②模型试验的设计图，包括地层的铺设以及监测设备的布置，其中地层的铺设采用研究区真实的地层分布情况。③所用模型土的物理力学试验报告，包括所用土的密度、含水率、粘聚力、摩擦角、颗粒级配、渗透系数等物理力学参数测量值及测量过程。④3次抽水试验的监测数据，包括地表位移、孔隙水压力以及不同位置处土压力的原始监测数据。其中，地表位移采用5G106型接触式位移计进行监测，孔隙水压力采用CYY2型硅压阻式传感器进行监测，土压力采用CYY9土壤压力传感器进行监测。最终，通过大型沙槽物理模型试验，揭示了地下水开采对地面沉降的影响规律并形成了分析报告。数据量为20MB。

To uncover the characteristics and laws of land subsidence induced by groundwater exploitation in Xiong'an New Area, this project designed a large-scale sand tank physical model test, which simulates water level changes through pumping and recharge operations, and investigates the impact of pumping and recharge on ground deformation. The main contents of the dataset are as follows:
1. Introduction document of the large-scale sand tank physical model test simulation system;
2. Design drawings of the model test, including the stratum laying scheme and the layout of monitoring equipment, where the stratum laying adopts the actual stratum distribution of the study area;
3. Physical and mechanical test reports of the model soil, including the measured values and test procedures of physical and mechanical parameters such as soil density, moisture content, cohesion, friction angle, particle size distribution, and permeability coefficient;
4. Monitoring data from three pumping tests, including original monitoring data of surface displacement, pore water pressure, and soil pressure at different locations. Specifically, surface displacement was monitored using a 5G106 contact displacement meter, pore water pressure was monitored using a CYY2 silicon piezoresistive sensor, and soil pressure was monitored using a CYY9 soil pressure sensor.
Finally, through the large-scale sand tank physical model test, the law of the impact of groundwater exploitation on land subsidence was revealed, and an analysis report was formed. The total data volume of the dataset is 20 MB.