Analysis of dynamic characteristics of groundwater due to rainwater collection measures

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Dec.2024, Vol.47 No.12: 1698-1703

DOI: 10.3969/j.issn.1003-5060.2024.12.018

Authors

DU Jingwen $ ^{1} $, LIU Peigui $ ^{2} $, HUANG Jingsheng $ ^{1,3} $, DU Xinlong $ ^{2} $

(1. College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China; 2. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China; 3. Yangtze Institute for Conservation and Development, Hohai University, Nanjing 210098, China)

Abstract and Keywords

Abstract: This study investigates the groundwater dynamics due to two rainwater collection measures including permeable pavement and sunken green space. A primary school in Huaibei Plain is chosen as the study area. A numerical flow model is developed for quantitatively analyzing the responses of the groundwater level and exploitable amount to the two rainwater collection measures under different precipitation frequencies. Results suggest the exploitable amount of groundwater can be increased by 2.78%, 2.79% and 2.81% for the precipitation frequencies of 25%, 50% and 75%, respectively. The rainwater collection measures raise the groundwater level by 0-0.24 m under the average annual rainfall in 2017-2018. The ratio of such an increase to the aquifer thickness falls in the range of 0-0.96%. This study may be of importance in managing the groundwater resources in the study area.

Keywords: numerical model; allowable drawdown; exploitable amount of groundwater; permeable pavement; sunken green space

作者信息

杜静雯 $ ^{1} $，刘佩贵 $ ^{2} $，黄璟胜 $ ^{1,3} $，杜新龙 $ ^{2} $

(1. 河海大学水文水资源学院, 江苏南京 210098; 2. 合肥工业大学土木与水利工程学院, 安徽合肥 230009; 3. 河海大学长江保护与绿色发展研究院, 江苏南京 210098)

摘要和关键词

摘要: 为探究透水铺装和下凹式绿地2种雨水收集措施对周边地下水动态的影响,文章以在淮北平原地区的某所学校为研究对象,通过建立地下水流数值模型,定量分析不同降水频率下,地下水水位和可开采量对2种雨水收集措施的响应程度。结果表明:在雨水收集措施正常运行的情状况下,当降水频率为25%、50%、75%,可使地下水可开采量分别增加2.78%、2.79%、2.81%;基于2017—2018年年平均降雨量,安装雨水收集措施可使地下水水位抬升0~0.24 m,与含水层厚度相比,变化幅度为0~0.96%。该研究结果对增加研究区内地下水资源量具有一定的应用价值。

关键词: 数值模型；允许降深；地下水可开采量；透水铺装；下凹式绿地

Funding

国家自然科学基金资助项目（52079042）；安徽省自然科学基金资助项目（2208085US07）

合肥工业大学学报(自然科学版)

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