岩土力学2017，Vol.38Issue(5)：1359-1364,6.DOI:10.16285/j.rsm.2017.05.017
一种长期观测资料确定弱透水层参数的方法
A method for estimating aquitard parameters using long-term monitoring data
摘要
Abstract
Aquitards are an important part of an aquifer system.Hydraulic properties of an aquitard,such as hydraulic conductivity and specific storage must be determined before the investigation of strata deformation and groundwater depletion.Based on the proposed one-dimensional schematic diagram of an aquifer system,a dimensionless analytical solution for flow in the aquitard is derived under the boundary condition of drawdown in adjacent aquifers showing a linear increase with time.The dissipation process of time-lag drawdown in the aquitard is analyzed.The type curve of cumulative aquitard compaction versus time is derived based on the mass balance equation of water.A new type curve method is further derived for estimating the hydraulic conductivity and specific storage of the aquitard.The type curve method reflects the time-lag drainage within the aquitard.This method is tested by a field application to the Shanghai aquifer system to obtain the hydraulic parameters of the second aquitard at the f10-7 extensometer site.Field test results show that the hydraulic conductivity and specific storage are 4.26 ×10-10 m/s and 2.22 ×10-4 m-1,respectively.For an aquifer system with long-term observed water level and deformation data,the new type curve method can be used to some extent.关键词
弱透水层/水力参数/解析解/配线法Key words
aquitard/hydraulic parameters/analytical solution/type curve method分类
建筑与水利引用本文复制引用
庄超,周志芳,韩江波..一种长期观测资料确定弱透水层参数的方法[J].岩土力学,2017,38(5):1359-1364,6.基金项目
国家自然科学基金资助项目(No.41572209) （No.41572209）
国家重点研发计划项目(No.2016YFC0402803) （No.2016YFC0402803）
中央高校基本科研业务费专项资金资助项目(No.2017B40514).This work was supported by the National Natural Science Foundation of China (41572209),the National Key Research and Development Program of China (2016YFC0402803) and the Fundamental Research Funds for Central Universities (2017B40514). （No.2017B40514）
