| 基于泉流量过程线的管道流与裂隙流识别 |
| |
| 引用本文： | 柯婷婷,束龙仓.基于泉流量过程线的管道流与裂隙流识别[J].中国岩溶,2015,34(5). |
| |
| 作者姓名： | 柯婷婷 束龙仓 |
| |
| 作者单位： | 江苏省地质勘查技术院,河海大学水文水资源与水利工程科学国家重点实验室 |
| |
| 摘 要： | 岩溶含水系统存在不规则的裂隙网络和管道结构,由于贮水空间的差异,导致水流运移的多变性和水动力参数的复杂难测。基于泉流量过程线的分析技术能够很好地识别岩溶系统中的管道流和裂隙流。文章将泉流量分为3个组成部分:前期蓄水量、快速径流和慢速径流,其中快速径流和慢速径流视为两线性并联水库,建立了前期降雨和瞬时单位线之间的识别函数,识别降雨在岩溶不同空隙类型中的水量分配系数,并将该函数模型应用到后寨地下河岩溶小流域。模拟结果表明,上游到下游前期蓄水量呈增加趋势,而水量进入管道中的分配系数分别为0.84,0.6以及0.48,呈现递减趋势,说明岩溶裂隙结构越往下游越发育。模型计算出的泉流量曲线与实测值相比,NSE达到90%以上,模拟效果理想。
|
| 关 键 词： | 岩溶含水系统 泉流量过程线 管道流 裂隙数流 识别函 |
A quantitative approach to distinct baseflow and quickflow based on the spring hydrograph analysis |
| |
| KE Ting-ting and SHU Long-cang.A quantitative approach to distinct baseflow and quickflow based on the spring hydrograph analysis[J].Carsologica Sinica,2015,34(5). |
| |
| Authors: | KE Ting-ting and SHU Long-cang |
| |
| Institution: | Geological Exploration Technology Institute of Jiangsu Province and State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering, Hohai University |
| |
| Abstract: | The spring hydrograph is composed of the cumulative rainfall, baseflow, and quick flow based on the characteristic of the karstic aquifer. A linear convolution integral model is applied to distinguish the quick flow and slow flow component of a karst spring hydrograph. Different from the traditional unit hydrograph methods, the two parallel reservoirs are used to derive the unit response functions for quick and slow components of spring hydrograph. The method also provides an estimation of the parptitioning coefficient assigned to the reservoirs. The work is demonstrated by a case application to the Houzhai underground river in southwestern of China. The result shows that the proportion of conduit flow is smaller from the upstream to the downstream. However, this approach is not established in the large basin or the long- term forecast of the spring discharge. |
| |
| Keywords: | karstic aquifer spring hydrograph baseflow quickflow composite function |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国岩溶》浏览原始摘要信息 |
| 点击此处可从《中国岩溶》下载免费的PDF全文 |
|
