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| 含水层压密引起其特征参数变化的实验 | |
| 引用本文： | 陈荣波,束龙仓,鲁程鹏,李伟.含水层压密引起其特征参数变化的实验[J].吉林大学学报(地球科学版),2013,43(6):1958. |
| 作者姓名： | 陈荣波 束龙仓 鲁程鹏 李伟 |
| 作者单位： | 1.河海大学水文水资源与水利工程科学国家重点实验室,南京210098; 2.中国水电顾问集团昆明勘测设计研究院，昆明650051; 3.江苏省地质调查研究院,南京210018 |
| 基金项目： | 国家自然科学基金;国家自然科学基金;高等学校博士学科点专项科研基金;中国地调局项目 |
| 摘 要： | 水文地质参数在含水层压密过程中不断变化，这是诸多地面沉降模型实际应用中的难点之一。就含水层压密对水文地质参数的影响开展了初步的实验，结果表明，压密前后含水层的渗透系数和给水度发生了较大的变化。其中：渗透系数随模拟含水层介质压密过程的变化几乎呈线性的减小趋势，线性拟合决定系数为0.959 2~0.997 1；给水度随着含水层的压实而表现出下降的趋势较为复杂，随介质类型的不同而有差异。渗透系数和给水度的下降速度在不同介质中也有一定的差异。在本研究的实验模型尺度下，给水度和渗透系数呈现一定的线性正相关关系，一次线性相关函数斜率为0.001 3~0.005 1，截距为0.011 6~0.038 1，基本相近且在相同数量级。 |
| 关 键 词： | 地面沉降 含水层压密 渗透系数 给水度 砂柱试验 |
| 收稿时间： | 2013-01-15 |
Experimental Study on the Characteristic Parameters Variation of the Aquifer Caused by Aquifer Compaction |
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| Chen Rongbo,Shu Longcang,Lu Chengpeng,Li Wei.Experimental Study on the Characteristic Parameters Variation of the Aquifer Caused by Aquifer Compaction[J].Journal of Jilin Unviersity:Earth Science Edition,2013,43(6):1958. | |
| Authors: | Chen Rongbo Shu Longcang Lu Chengpeng Li Wei |
| Institution: | 1.State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering, Hohai University, Nanjing210098,China; 2.Kunming Hydroelectric Investigation, Design and Research Institute,China Hydropower Engineering Consulting Group Co., Kunming650051,China; 3.Geological Survey of Jiangsu Province, Nanjing210018,China |
| Abstract: | Land subsidence, accompanied by the aquifer media compaction process, is a large global sphere of influence and multiple geological disasters, which is one of the key triggers that lead to hydrogeological parameter spatial variability and loss. And this variability is the real application bottlenecks to many land subsidence model. Based on the above, the authors designed a preliminary experiment on the impact of aquifer characteristics parameter caused by land subsidence. The results indicated that aquifer hydrogeological parameters, especially hydraulic conductivity and specific yield, changed significantly before and after compaction process. Hydraulic conductivity showed near-linear decreasing trend with R2 between 0.959 2 and 0.997 1 as the aquifer media compaction process, while specific yield was in significant differences on complex decline trend besides the sharp decreasing process. Hydro-geological characteristics showed dramatic variability because of the aquifer media characteristics and its scale effects. There were certain linear features between hydraulic conductivity and specific yield in the case of model test scale,with linear correlation function slope of 0.001 3-0.005 1 and intercept of 0.011 6-0.038 1,which were basically similar and in the same order of magnitude. |
| Keywords: | land subsidence aquifer compaction permeability coefficient specific yield sand column test |
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