提高含水层参数精度的典型时段分段拟合法
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摘要
以山西省娄烦县某承压含水层无观测孔单井抽水试验为例,在全程曲线拟合法求解含水层参数的理论基础上,提出基于水位稳定下降段及水位稳定回升段的典型时段分段拟合法求参,并与常规的Jacob直线图解法、水位恢复法及全程曲线拟合法的求参结果进行对比分析。结果表明:典型时段分段拟合法求解含水层参数一致性好、精度高,得到的含水层导水系数为327.54 m~2/d、贮水系数为0.000 657。试验验证了利用水位稳定时期数据求参的准确性,相比全程曲线拟合法,典型时段分段拟合法具有选用数据少、计算简便等优点。
According to the results of pumping test with no observation hole in confined aquifer in Loufan County of Shanxi Province,typical-time subsection fitting method that relying on steady drawdown data and steady recovery data for water level was firstly proposed to calculateaquifer parameters,on the theoretical basis of whole curve matching method which deduces aquifer parameters. Through comparing with con-ventional methods such as Jacob linear graphic method,water level recovery method and whole curve matching method,it drew the conclu-sion that typical-time subsection fitting method had the advantage of consistency and high accuracy. The results show that the hydraulic con-ductivity coefficient and the storage coefficient can be determined as 327.54 m~2/d and 0.000 657. It further verified the accuracy of parametersolving by using steady period data of water level. Comparing with the whole curve matching method,typical-time subsection fitting methodhas the advantages of selecting fewer data and simple calculation.
According to the results of pumping test with no observation hole in confined aquifer in Loufan County of Shanxi Province,typical-time subsection fitting method that relying on steady drawdown data and steady recovery data for water level was firstly proposed to calculateaquifer parameters,on the theoretical basis of whole curve matching method which deduces aquifer parameters. Through comparing with con-ventional methods such as Jacob linear graphic method,water level recovery method and whole curve matching method,it drew the conclu-sion that typical-time subsection fitting method had the advantage of consistency and high accuracy. The results show that the hydraulic con-ductivity coefficient and the storage coefficient can be determined as 327.54 m~2/d and 0.000 657. It further verified the accuracy of parametersolving by using steady period data of water level. Comparing with the whole curve matching method,typical-time subsection fitting methodhas the advantages of selecting fewer data and simple calculation.
引文
[1]王文科,杨泽元,程东会,等.面向生态的干旱半干旱地区区域地下水资源评价的方法体系[J].吉林大学学报(地球科学版),2011,41(1):159-167.
[2]邱淑伟,梁秀娟,肖长来,等.阶梯状抽水试验水文地质参数确定[J].人民黄河,2015,37(3):72-74.
[3]师永丽,张永波,张志祥.基于AquiferTest与Matlab耦合的水文地质参数求解[J].水电能源科学,2015,33(8):63-66.
[4]SAMANI N,GOHARI-MOGHADAM M,SAFAVI A A,et al.ASimple Neural Network Model for the Determination of AquiferParameters[J].Journal of Hydrology,2007,340:1-11.
[5]中国地质调查局.水文地质手册[M].北京:地质出版社,2014:642-680.
[6]聂庆林,高广东,轩华山,等.抽水试验确定承压含水层参数方法探讨[J].水文地质工程地质,2009,4(2):37-40.
[7]肖有才,靳向红,杨兰和.井损的消除方法及其在抽水试验中的作用[J].工程勘察,2009(11):44-47.
[8]薛禹群.地下水动力学[M].北京:地质出版社,1997:96-98.
[9]肖长来,梁秀娟,崔建铭,等.确定含水层参数的全程曲线拟合法[J].吉林大学学报(地球科学版),2005,35(6):751-755.
[10]赵琳琳,肖长来,陈昌亮,等.基于抽水试验的多种方法确定水文地质参数[J].地下空间与工程学报,2015,11(2):306-309.
[2]邱淑伟,梁秀娟,肖长来,等.阶梯状抽水试验水文地质参数确定[J].人民黄河,2015,37(3):72-74.
[3]师永丽,张永波,张志祥.基于AquiferTest与Matlab耦合的水文地质参数求解[J].水电能源科学,2015,33(8):63-66.
[4]SAMANI N,GOHARI-MOGHADAM M,SAFAVI A A,et al.ASimple Neural Network Model for the Determination of AquiferParameters[J].Journal of Hydrology,2007,340:1-11.
[5]中国地质调查局.水文地质手册[M].北京:地质出版社,2014:642-680.
[6]聂庆林,高广东,轩华山,等.抽水试验确定承压含水层参数方法探讨[J].水文地质工程地质,2009,4(2):37-40.
[7]肖有才,靳向红,杨兰和.井损的消除方法及其在抽水试验中的作用[J].工程勘察,2009(11):44-47.
[8]薛禹群.地下水动力学[M].北京:地质出版社,1997:96-98.
[9]肖长来,梁秀娟,崔建铭,等.确定含水层参数的全程曲线拟合法[J].吉林大学学报(地球科学版),2005,35(6):751-755.
[10]赵琳琳,肖长来,陈昌亮,等.基于抽水试验的多种方法确定水文地质参数[J].地下空间与工程学报,2015,11(2):306-309.