| 王旭东,吕乐,时俊,谭卫佳.抽水试验反演水文地质参数的多线全程加权法[J].水利学报,2020,51(3):276-285 |
| 抽水试验反演水文地质参数的多线全程加权法 |
| Weighted multi-curve fitting method for estimating hydrogeological parameters from pumping test |
| 投稿时间：2019-08-23 |
| DOI：10.13243/j.cnki.slxb.20190599 |
| 中文关键词: 多观测井抽水试验 观测井权重 多线全程加权法 杂交粒子群算法 水文地质参数 |
| 英文关键词: pumping test with multiple monitoring wells weight of monitoring well weighted multi-curve fitting method breedPSO hydrogeological parameters |
| 基金项目:国家自然科学基金项目（41272303） |
|
| 摘要点击次数: 3341 |
| 全文下载次数: 744 |
| 中文摘要: |
| 抽水试验是反演场地水文地质参数的重要依据，针对多观测井全程抽水试验的水文地质参数反演问题，提出了描述观测井数据可靠性的权重概念，构建了利用多个观测井的抽水阶段与水位恢复阶段实测数据、反映观测井数据可靠性的多线全程加权法，并利用遗传算法杂交策略改进的杂交粒子群算法，实现了多线全程加权目标函数的最优求解。在此基础上，以南京江北新区现场抽水试验为背景，基于场地水文地质条件概化的越流承压含水层计算模型，反演了场地含水层的导水系数、贮水系数和越流因数，分析了多观测井抽水试验反演水文地质参数问题引入观测井权重的必要性，验证了多线全程加权法反演水文地质参数的合理性，探讨了杂交粒子群算法求解多线全程加权目标函数的有效性。研究表明，多线全程加权法与杂交粒子群算法结合，为利用多观测井现场抽水试验合理反演水文地质参数提供了一条新的途径。 |
| 英文摘要: |
| Pumping test plays an important role in the estimation of hydrogeological parameters. For hydrogeological parameter estimation from the pumping test with multiple monitoring wells, the concept of weight was proposed which could describe the reliability of data from different monitoring wells. A weighted multi-curve fitting method was introduced which could make full use of the drawdown data from different monitoring wells in the pumping and recovery periods and reflect the reliability of the monitoring data. Subsequently, an improved particle swarm optimization (breedPSO) is used to obtain the optimal solution of the objective function of weighted multi-curve fitting method. The proposed method is applied to estimate the transmissivity, storage coefficient and leakage factor of the leaky confined system in Jiangbei New Area of Nanjing with the hydrogeological model of leaky aquifers. The necessity of incorporating weights of monitoring well into the estimation of hydrogeological parameters was discussed. In addition, the rationality of the weighted multi-curve fitting method and the validity of breedPSO for solving the objective function was analyzed. The results show that the combination of weighted multi-curve fitting method and breedPSO provides a new way to estimate the hydrogeological parameters reasonably from the pumping test with multiple monitoring wells. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |