摘要
由于依据多源数据进行地面不均匀沉降监测,忽略了沉降量与多个影响因子的关系,使得监测结果相对误差较大,因此提出水利工程沿线地下水超采区地面不均匀沉降监测技术。针对地下水超采区域的地形环境进行分析,建立不均匀沉降监测基准网;获取每个监测点的实时数据,设计监测数据处理体系,完成数据的奇异值去除、等时距处理以及去噪处理;运用逐步回归分析原理,提取与地面不均匀沉降有显著关系的影响因子,结合多个影响因子构建地表沉降分析模型;再结合二次抛物线模型,生成地表沉降分布曲线。应用分析结果表明,所提出技术应用后,得出的地面沉降监测结果与实际沉降量相比相对误差总是低于1%,满足工程建设要求。
Based on multi-source data, the monitoring of uneven land settlement ignores the relationship between settlement and various influencing factors, resulting in large relative error of monitoring results. Therefore, the monitoring technology of uneven ground settlement in groundwater overexploitation area along the water conservancy project is proposed. The topographic environment of groundwater overexploitation area is analyzed, and the uneven settlement monitoring benchmark network is established. Obtain the real-time data of each monitoring point, design the monitoring data processing system, and complete the singular value removal, equal time interval processing and denoising of the data. Using the principle of stepwise regression analysis, the influencing factors significantly related to the uneven land subsidence are extracted, and the analysis model of land subsidence is constructed by combining multiple influencing factors. Combined with the quadratic parabola model, the surface settlement distribution curve is generated. The application analysis results show that the relative error of the land settlement monitoring results obtained after the application of the proposed technology is always less than 1% compared with the actual settlement, which meets the requirements of engineering construction.
作者
杨浩
汤树海
YANG Hao;TANG Shu-hai(Lianshui County Water Conservancy Science Research Station,Lianshui 223400,Jiangsu,China)
出处
《水利科技与经济》
2022年第9期50-55,共6页
Water Conservancy Science and Technology and Economy
关键词
水利工程
地下水超采
不均匀沉降
沉降盘
基准点
监测技术
hydraulic engineering
groundwater overexploitation
uneven settlement
settlement tray
datum point
monitoring technology
