| 应力历史对弱透水层参数影响试验研究 |
| |
| 引用本文： | 李兆峰,戴云峰,周志芳,张博然,周翠英.应力历史对弱透水层参数影响试验研究[J].水文地质工程地质,2017,0(5):14-14. |
| |
| 作者姓名： | 李兆峰 戴云峰 周志芳 张博然 周翠英 |
| |
| 作者单位： | 1.成都理工大学环境与土木工程学院，四川 成都610059；2.中山大学工学院，广东 广州510275；3.南京水利科学研究院水文水资源与水利工程科学国家重点实验室，江苏 南京210029；4.河海大学地球科学与工程学院，江苏 南京211100 |
| |
| 基金项目： | 国家自然科学基金项目(4170225、41572209、51709186)；中国博士后科学基金资助项目（2017M611863） |
| |
| 摘 要： | 弱透水层储存的地下水是地下水资源的重要组成部分，弱透水层水文地质参数对地下水资源管理与评价以及地面沉降等具有重要意义。通过室内试验对定降深条件下弱透水层水流运移规律进行了研究，并探讨了弱透水层释水过程中的变形规律和释水规律。试验结果表明，在相邻含水层定降深条件下，弱透水层固结变形滞后于相邻含水层的降深变化，且变形速度逐渐变小并趋于零。基于室内试验，利用配线法求得弱透水层不同应力状态下的水文地质参数，对比分析，大变形和小变形试验中土层的渗透系数变化不大，但贮水率明显变小，土层的固结系数变大。因此，土层的应力历史对土层的渗透系数影响不大，而对贮水率有较大的影响。
|
| 关 键 词： | 弱透水层 应力历史 滞后变形 水力参数 |
| 收稿时间： | 2016-06-14 |
| 修稿时间： | 2016-09-15 |
An experimental study of the influence of stress history on parameters of an aquitard |
| |
| LI Zhaofeng,Dai Yunfeng,ZHOU Zhifang,ZHANG Boran,ZHOU Cuiying.An experimental study of the influence of stress history on parameters of an aquitard[J].Hydrogeology and Engineering Geology,2017,0(5):14-14. |
| |
| Authors: | LI Zhaofeng Dai Yunfeng ZHOU Zhifang ZHANG Boran ZHOU Cuiying |
| |
| Affiliation: | 1.College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, Sichuan610059, China; 2.School of Engineering, Sun Yat-sen University, Guangzhou, Guangdong510275, China; 3.State Key Laboratory of Hydrology-water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, Jiangsu210029, China;4.School of Earth Science and Engineering, Hohai University, Nanjing, Jiangsu211100, China |
| |
| Abstract: | The water in aquitards is an important part of groundwater resources. It is of important significance to determine hydrogeological parameters of an aquitard for the management and evaluation of groundwater resources and for land subsidence. This paper examined the law of the water flow in the aquitard with laboratory test and discussed the law of depletion and deformation of the aquitard when water is released from the aquitard. The results show that the consolidation of the aquitard lags behind the drawdown change of the adjacent aquifer. The deformation rate of the aquitard becomes smaller and tends to zeros under the condition of a constant drawdown of the adjacent aquifer. Based on the results of the laboratory test, the hydrogeological parameters of the aquitard were calculated by using the type curve method under different stress histories. The results suggest that the coefficient of permeability changes little, the specific storativity changes greatly and the consolidation coefficient of the soil layer becomes larger in the large deformation and small deformation tests. The small deformation test is carried out on the basis of the large deformation test of the soil layer. The stress history of the soil layer has little effect on the coefficient of permeability of the soil layer, but has a great influence on the specific storativity. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《水文地质工程地质》浏览原始摘要信息 |
|
点击此处可从《水文地质工程地质》下载全文 |
|
