| 利用大口径井抽水初期试验数据确定含水层参数 |
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| 引用本文： | 江思珉,周念清,施小清,郑茂辉.利用大口径井抽水初期试验数据确定含水层参数[J].工程勘察,2010(9):32-35. |
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| 作者姓名： | 江思珉 周念清 施小清 郑茂辉 |
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| 作者单位： | 同济大学水利工程系;南京大学水科学系;同济大学上海防灾所; |
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| 基金项目： | 国家自然科学青年基金资助项目(40702037); 同济大学青年优秀人才培养行动计划资助 |
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| 摘 要： | 在满足Theis假设的前提下,Theis公式是非稳定流抽水试验确定含水层参数的基本公式。而大口径开采井抽水初期的降深曲线是偏离Theis标准曲线的,此时要利用大口径井抽水初期试验数据求解含水层参数,可以采用Papadopulos-Cooper公式。针对Papadopulos-Cooper配线法求解过程中存在的主观性强、随意性大等弊端,一种基于Papadopulos-Cooper解析解的迭代近似解法被用于大口径井抽水试验计算。实例计算结果表明,该方法具有较高的求解精度,且解法实现简单,并在一定程度上解决了配线法求解含水层参数时的多解现象。
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| 关 键 词： | 大口径井 抽水试验 Papadopulos-Cooper公式 Theis公式 |
Aquifer parameters determination from early drawdowns in large diameter wells |
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| Jiang Simin,Zhou Nianqing,Shi Xiaoqing,Zhen Maohui.Aquifer parameters determination from early drawdowns in large diameter wells[J].Geotechnical Investigation & Surveying,2010(9):32-35. |
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| Authors: | Jiang Simin Zhou Nianqing Shi Xiaoqing Zhen Maohui |
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| Affiliation: | Jiang Simin1,Zhou Nianqing1,Shi Xiaoqing2,Zhen Maohui3 (1.Department of Hydraulic Engineering,Tongji University,Shanghai 200092,China,2.Department of Hydrosciences,Nanjing University,Nanjing 210093,3.Institute of Disaster Prevention & Relief,China) |
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| Abstract: | Theis formula is the fundamental formula to determine the parameters of the transient flow pumping tests under the conditions that Theis hypotheses are satisfied,But the early drawdowns in large diameter wells are deviating from the type curve.Under this situation,the Papadopulos-Cooper formula can be adopted to analyze the aquifer parameters from drawdowns in large diameter wells.Curve fitting method is the most common method for the analysis of pumping tests,but its main drawback is that curves are often ... |
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| Keywords: | large diameter well pumping test Papadopulos-Cooper formula Theis formula |
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