水文地质工程地质2018，Vol.45Issue(2)：159-164,6.DOI:10.16030/j.cnki.issn.1000-3665.2018.02.24
天津滨海新区抽水引起地面沉降现场试验研究
In-situ tests of land subsidence caused by pumping in the Tianjin Binhai New Area
摘要
Abstract
In-situ test of land subsidence caused by pumping in an confined aquifer was carried out at the new eco-city service center in the Tianjin Binhai New Area.The vibrating wire type pore water pressure sensor and multi-marks data taker system in one hole were used to monitor the changes in pore water pressure and subsidence in real time.The deformation properties of soil and the law of stratified settlement were analyzed.The test results show that the deformation of the clay layer obviously lags behind the change in water level in the confined aquifer,which has mainly the plastic deformation and creep phenomenon.The sand layer has not only elastic deformation,but also some plastic deformation and creep.The short-term extraction of groundwater will make the settlement of soils overly the confined aquifer and gradually increase from top to bottom near the pumping well,and the maximum settlement occurs at the top of the soil layer which has an obvious change in pore water pressure.关键词
地面沉降/一孔多标数据采集器/孔隙水压力/蠕变变形/分层沉降Key words
land subsidence/multi-marks data taker system in one hole/pore water pressure/creep deformation/stratified settlement分类
天文与地球科学引用本文复制引用
主灿,张云,何国峰,孙铁..天津滨海新区抽水引起地面沉降现场试验研究[J].水文地质工程地质,2018,45(2):159-164,6.基金项目
国家科技支撑计划资助项目(2013BAJ09B04) （2013BAJ09B04）
国家自然科学基金面上项目(41572250) （41572250）
