确定含水层参数的全程曲线拟合法  

Whole Curve Matching Method for Aquifer Parameters Determination

作　　者：肖长来[1] 梁秀娟[1] 崔建铭 兰盈盈[1] 张君 李书兰 梁瑞奇 郑策 

机构地区：[1]吉林大学环境与资源学院,吉林长春130026 [2]松原市前郭县水资源管理办公室,吉林松原131200

出　　处：《吉林大学学报（地球科学版）》2005年第6期751-755,共5页Journal of Jilin University：Earth Science Edition

基　　金：中国地质调查局项目(2003104001);吉林省科技攻关项目(20020401);吉林大学创新基金项目(450011022249)

摘　　要：含水层参数的确定是地下水资源评价、数值模拟、开发利用与保护以及科学管理的重要基础,抽水试验法是确定含水层参数的主要方法。根据含水层抽水试验的泰斯(Theis)公式,运用优化理论,结合计算机技术,提出利用抽水试验数据确定含水层参数的全程曲线拟合法。该方法充分考虑抽水过程中水位快速下降段、水位缓慢下降段和水位恢复段的观测资料,满足计算水位与实测水位之间的误差平方和最小、计算的水位过程线与抽水过程的实测曲线最佳拟合。实例研究表明,该方法速度快、精度高、求参结果最优,既适用于承压含水层求参,又可推广到潜水含水层求参。The aquifer＇s parameters determination is an important basis for groundwater resources evaluation, numerical simulation, development and protection as well as scientific management. Pumping test is a main often-used method to determine aquifer＇s parameters. A new method, called whole curve matching method （WCMM）, is presented to determine confined or unconfined aquifer＇s parameters by using optimum theory together with computer technology on the basis of tbeis equation for the pumping test. Fully considering the measured data during the period of rapid and slowly decline of groundwater level and the period of water level recovery in pumping test, this method makes the sum of squares of errors between the measured water level and calculated water level minimum and the calculated water level hydrograph best match the measured water level hydrograph. A case study shows that this method has rapid speed and high accuracy and the results of parameter＇s determination are optimized. This method can be used for both confined aquifer and for unconfined aquifer and it has important practical value for scientific research and engineering practice.

关 键 词：全程曲线拟合法 抽水试验 含水层 含水层参数 泰斯公式 

分 类 号：P641.8[天文地球—地质矿产勘探]