摘要
大量开采地下水引发的地面沉降破坏建筑物和生产设施,对人类生活、生产经济产生了巨大的影响。结合准分布式和全分布式光纤监测技术,对盐城市陈家港一个350 m深钻孔进行了两年半的监测,分析了该区域地下含水层水位变动情况及受水位变动影响的地下土层变形特征。监测结果表明:陈家港地层应变变化较为明显的是地表至地下25 m范围内,其余深度土层变形较为稳定;该地地下水呈季节性波动循环,土层变形总体呈现出压缩回弹的循环波动变形;深部含水层变形主要受水位变化影响,浅部含水层变形还受其他因素控制。光纤监测技术为研究地面沉降提供了更精细化的监测手段,对重点层位的控制与治理具有重要意义。
Land subsidence caused by massive exploitation of groundwater destroys buildings and production facilities,which does great harm to human life and economy.Combined with quasi-distributed and fully distributed optical fiber monitoring technologies,a 350 m deep borehole in Chenjiagang of Yancheng City was monitored for two and a half years.The groundwater level changes of aquifers and the deformation characteristics of underground soil layers affected by water level change in this area were analyzed.The monitoring results show that the obvious variation of stratum strain in Chenjiagang is within 25 m from surface to underground,while the deformations of other soil layers are relatively stable.Groundwater in this area shows a seasonal fluctuation cycle,and the deformation of soil layer shows cyclic deformation of compression and spring back.The deformation of deep aquifers is mainly affected by the change of water level,while deformation of shallow aquifers will be affected by other factors.Optical fiber monitoring provides a more refined monitoring means for the study of land subsidence and is of great significance for the control and treatment of key deformation layers.
作者
吴起帆
吴静红
贾立翔
唐柏鉴
龚绪龙
WU Qifan;WU Jinghong;JIA Lixiang;TANG Baijian;GONG Xulong(School of Civil Engineering,SUST,Suzhou 215011,China;Suzhou Nanzee Sensing Technology Co.,Ltd,Suzhou 215123,China;Key Laboratory of Ground Fissures and Geological Disasters,Ministry of Natural Resources,Jiangsu Geological Survey Research Institute,Nanjing 210018,China)
出处
《苏州科技大学学报（工程技术版）》
2021年第2期14-20,共7页
Journal of Suzhou University of Science and Technology（Engineering and Technology Edition）
基金
国家自然科学基金青年科学基金项目(41907232)
江苏省自然科学基金资助项目(BK20180972)。
关键词
地面沉降
变形
孔隙水压力
光纤监测
含水层
land subsidence
deformation
pore water pressure
optical fiber monitoring
aquifer
