Optimum experimental design of a monitoring network for parameter identification at riverbank well fields
Optimum experimental design of a monitoring network for parameter identification at riverbank well fields
复制标题
河岸井场参数识别监测网络优化试验设计
DOI：
10.1016/j.jhydrol.2015.02.004
复制
发表时间：
2015-04
影响因子：
6.4
通讯作者：
V. M. Shestakov
中科院分区：
文献类型：
--
作者：
Wang, Ping;S. P. Pozdniakov;V. M. Shestakov
河流水位的波动和地下水开采的变化往往会破坏河岸井田的稳态水流制度。本文提出了河岸井田渗流过程中的准恒定流动判据。在恒定流的假设下，提出了一种确定河岸渗流过程中河流与水力连通含水层之间关键水力参数(含水层导水率和河床渗透阻力)的解析方法。以俄罗斯库伊别谢夫水库附近河岸井场为例，基于面向模型的方法，设计了一个最优的常规观测网(由监测井的位置和观测制度组成)，以最大限度地减少水力参数估计的不确定性。分析表明，最简单的恒定地下水开采模式的地表水位初始退缩可以用来确定关键的水力参数；根据所设计的监测网络，这些估计参数的误差不超过7%或12%。在比较两种典型监测网点时，A-A观测线在水力参数估计方面优于B-B观测线，A-A观测线穿过供水井中途。研究结果可为河岸井田关键水力参数监测网络的设计和优化提供参考。
A steady-state flow regime in riverbank well fields is often violated by fluctuations in river stages and variations in groundwater extraction. In this study, a criterion of quasi-steady flow during filtration processes at riverbank well fields was introduced. Under the assumption of steady-state flow, an analytical approach for determining the key hydraulic parameters (aquifer transmissivity and riverbed filtration resistance) between a stream and a hydraulically connected aquifer during riverbank filtration was presented. An optimal regular observation network (consisting of the locations of monitoring wells and the observation regime), which is based on the model-oriented approach using an example of a riverbank well field near the Kuybyshev Reservoir, Russia, was designed to minimise the uncertainty in the estimates of hydraulic parameters. The analyses showed that the initial recession in the surface water levels for the simplest constant groundwater withdrawal patterns can be used to determine the key hydraulic parameters; the error in these estimated parameters was less than 7% or 12%, depending on the designed monitoring network. When comparing the two typical monitoring networks, observation line A–A that passes midway through the water supply wells performed better than observation line B–B that passes through the water supply wells when estimating the hydraulic parameters. The results of this study can be used as a reference for designing and optimising a monitoring network that aims to determine the key hydraulic parameters at riverbank well fields.
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影响因子：
6.4
作者：
M. Shanafield;P. Cook
通讯作者：
M. Shanafield;P. Cook
影响因子：
2.4
作者：
C. Doussan;E. Ledoux;M. Detay
通讯作者：
C. Doussan;E. Ledoux;M. Detay
影响因子：
6.4
作者：
Xunhong Chen;Jinxi Song;Wenke Wang
通讯作者：
Xunhong Chen;Jinxi Song;Wenke Wang
DOI：
10.1007/s00254-001-0481-z
发表时间：
2002-03
期刊：
Environmental Geology
影响因子：
--
作者：
V. Shestakov
通讯作者：
V. Shestakov
DOI：
10.1007/s002540000172
发表时间：
2000-11
期刊：
Environmental Geology
影响因子：
--
作者：
Xunhong Chen
通讯作者：
Xunhong Chen