地下水压缩开采对沧州市地面沉降的控制效果预测  

Control effect prediction of land subsidence in Cangzhou by using groundwater reduction exploitation

作　　者：骆祖江[1] 胡颖 陈卓 田小伟[2] Luo Zujiang;Hu Ying;Chen Zhuo;Tian Xiaowei(School of Earth Sciences and Engineering, Hohai University, Nanfing 211100, China;The 4th Hydrogeology Group of Hebei Bureau of Geological Development, Cangzhou 061000, China)

机构地区：[1]河海大学地球科学与工程学院,南京211100 [2]河北省地矿局第四水文工程地质大队,河北沧州061000

出　　处：《工程勘察》2018年第5期31-38,78,共9页Geotechnical Investigation & Surveying

基　　金：河北省重大科研项目(CZCG2012055)

摘　　要：为了准确探究地下水压缩开采对沧州市地面沉降的控制效应,在结合研究区工程地质和水文地质条件的基础上,以比奥固结理论为基础,建立了沧州市地下水开采与地面沉降的三维全耦合数学模型,对模型进行识别、验证从而提高其预测模拟的准确性。分别在现状开采和压缩开采条件下,预测了从2015年12月31日至2030年12月31日逐年的地下水流场的变化特征和地面沉降的变化趋势,结果表明:至2030年12月31日,现状开采条件下,沧州市累计最大地面沉降量为431.37mm,最大沉降速率为28.76mm/a;压缩开采条件下,沧州市累计最大地面沉降量为267.45mm,最大沉降速率为17.83mm/a,沧州市地面沉降得到有效控制。In order to explore the control effect of groundwater reduction exploitation on land subsidence in Cangzhou accurately,combined with the geological and hydrogeological conditions of the study area and based on the Biot＇s consolidation theory, the three-dimensional full coupling mathematic model is established and applied to the study of land subsidence in Cangzhou of Hebei Province to improve the accuracy of model＇s prediction simulation from identifying and validating. Respectively from the current exploitation and reduction exploitation conditions,the change characteristics of groundwater flow field and the variation trend of the land subsidence year by year from December 31,2015 to December 31,2030 are predicted. The results indicate that,on December 31,2030,under the current exploitation condition,the maximum cumulative land subsidence in Cangzhou area will be 431. 37 mm and the maximum subsidence rate will be 28. 76 mm/a; while under the reduction exploitation,the maximum cumulative land subsidence in the area will be 267. 45 mm and the maximum subsidence rate will be 17. 83 mm/a,the land subsidence in Cangzhou will be effectively controlled.

关 键 词：压缩开采 比奥固结理论 耦合 地面沉降 

分 类 号：TU433[建筑科学—岩土工程]