| 气压式振荡试验确定地层渗透系数适宜性 |
| |
| 引用本文： | 戴云峰,刘九夫,闵星,林锦,韩江波,柳鹏,李兆峰,孙晓敏.气压式振荡试验确定地层渗透系数适宜性[J].水科学进展,2018,29(3):398-406. |
| |
| 作者姓名： | 戴云峰 刘九夫 闵星 林锦 韩江波 柳鹏 李兆峰 孙晓敏 |
| |
| 作者单位： | 1.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; |
| |
| 基金项目： | 国家重点研发计划资助项目（2016YFC0402800）；国家自然科学基金资助项目（51709186）；江苏省基础研究计划（自然科学基金）资助项目（BK20170154） |
| |
| 摘 要： | 为评价滨海地区海（咸）水入侵区不同类型地层渗透性，提出振荡试验适宜模型选择方法。利用Geoprobe系统对不同平面位置地层实施了气压式振荡试验，部分点位进行了分层测试；利用配线法计算地层渗透系数。结果表明:当试验目标层为承压含水层时，利用Butler模型分析欠阻尼振荡试验，KGS模型分析过阻尼振荡试验，均可获得良好的计算结果；当试验目标层为弱透水层时，KGS模型可用于过阻尼振荡试验的数据分析，但计算结果会受到相邻高渗透性含水层以及钻孔编录不准确的影响。地层渗透性等级未知条件下，需根据地层类型、介质岩性、测试井结构和水位恢复过程曲线特征选择适宜的振荡试验分析模型，以准确获取地层渗透系数值。
|
| 关 键 词： | 振荡试验 承压含水层 弱透水层 非完整井 渗透系数 |
| 收稿时间： | 2017-10-17 |
Applicability of the hydraulic conductivity determination of formation by pneumatic slug tests |
| |
| DAI Yunfeng,LIU Jiufu,MIN Xing,LIN Jin,HAN Jiangbo,LIU Peng,LI Zhaofeng,SUN Xiaomin.Applicability of the hydraulic conductivity determination of formation by pneumatic slug tests[J].Advances in Water Science,2018,29(3):398-406. |
| |
| Authors: | DAI Yunfeng LIU Jiufu MIN Xing LIN Jin HAN Jiangbo LIU Peng LI Zhaofeng SUN Xiaomin |
| |
| Affiliation: | 1.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China;2.Groundwater Research Center, Nanjing Hydraulic Research Institute, Nanjing 210029, China;3.College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China |
| |
| Abstract: | To evaluate the permeability of a coastal formation in a seawater (saltwater) intrusion area and to introduce a method to select applicable slug test models, pneumatic slug tests were implemented using a Geoprobe system at different plane positions. Layered slug tests were also performed at several test sites. The matching-type curves method was used to calculate the hydraulic conductivity parameters of formation. The results show that, if the test target formation is a confined aquifer, good results are obtained from the calculations by analyzing either the overdamped oscillation slug tests using the KGS model or the underdamped oscillation slug tests using the Butler model. If the test target formation is an aquitard, the KGS model can be used to analyze the overdamped oscillation slug tests. The calculation results will be affected by the presence of an adjacent aquifer with high hydraulic conductivity and also by the inaccuracy associated with borehole logging. If the conditions of formation have unknown permeability grade, a reasonable slug test solution model must be chosen to calculate the hydraulic conductivity parameters precisely by analyzing concurrently the layer type, the formation type, the test well structure, and the characteristics of the water level recovery. |
| |
| Keywords: | slug tests confined aquifer aquitard partially penetrating well hydraulic conductivity parameter |
|
| 点击此处可从《水科学进展》浏览原始摘要信息 |
|
点击此处可从《水科学进展》下载全文 |
|
