基于有限层法的承压水开采地面沉降简明分析  

A Simplified Evaluation Approach for Land Subsidence Based on Finite Layer Method of Confined Groundwater Flow

作　　者：徐进[1] 张豪 王斯海 XU Jin;ZHANG Hao;WANG Sihai(School of Civil Engineering,Yantai University,Yantai 264005,China;Architectural Engineering Institute,Jiangsu College of Engineering and Technology,Nantong 226000,China)

机构地区：[1]烟台大学土木工程学院,山东烟台264005 [2]江苏工程职业技术学院建筑工程学院,江苏南通226000

出　　处：《烟台大学学报（自然科学与工程版）》2023年第4期451-456,共6页Journal of Yantai University(Natural Science and Engineering Edition)

基　　金：国家自然科学基金资助项目(41602284);江苏省青蓝工程;南通市科技局计划项目(JCZ20094)。

摘　　要：针对承压含水层地下水开采问题,考虑地下水的非稳定流和不同开采条件的影响,基于地下水流的有限层方法,给出了开采条件下的地下水位降深。结合弹性半空间明德林解和二维卷积公式,建立了承压水开采引起上覆土层地面沉降的计算公式。在此基础上,利用Mathematica实现了地面沉降的简明分析,通过与已有解的对比,验证了所建立计算方法的正确性。通过算例分析进一步详细分析了覆盖层厚度、渗透系数、贮水率、弹性模量等因素对地面沉降发展的影响,探讨了本文方法应用于水平井、群井等复杂抽水问题的适用性。In this study,the pumping-induced drawdown in the confined aquifer,in which the unsteady flow and various types of well screen configurations can be taken into account,is presented based on finite layer method for groundwater flow.Based on the two-dimensional convolution and the classic Mindlin's solution,a simple formula for evaluating subsidence in overlaying soil is derived and a computation program is developed by Mathematica.The validity of the present approach is verified by comparing with existing solutions.The presented results also are used to discuss the influence of overburden thickness,hydraulic conductivity,aquifer specific storage and elastic modulus on land subsidence through numerical examples.The applicability of this method in simulation of horizontal wells and multiple wells pumping systems is also investigated.

关 键 词：地面沉降 承压水 地下水开采 简明计算 二维卷积 

分 类 号：TU43[建筑科学—岩土工程]