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河床沉积物竖管试验求参方法应用与评价

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利用和田河干流下游河段河床沉积物竖管试验数据,开展不同竖管试验求参方法的应用与评价工作,选取HTST01 试验点进行垂向渗透试验,选取HTST02 试验点分别进行水平方向渗透试验和垂向渗透试验,分析传统计算法的渗透系数取值合理性以及其与直线图解法计算结果之间的差异.结果表明:传统计算法获取的各试验工况渗透系数近似服从具有一定偏度和峰度的非标准正态分布,均具有中等变异性;采用算术平均值进行参数取值具有一定的合理性和适用性,而采用随机计算值时参数取值的误差大小具有偶然性和不确定性.直线图解法能够有效避免随机误差的产生,但其获取的计算结果与传统计算法的算术平均值存在一定差异,其相对误差平均值为 10.59%,最大相对误差值超过 27.00%.在竖管试验应用过程中,不应忽视计算方法求参取值合理性的影响.
Application and Evaluation of Parameter Seeking Method for Vertical Pipe Test of River Bed Sediments
Using the vertical pipe test data of riverbed sediment in the downstream section of the main stream of Hotan River,the paper car-ried out the application and evaluation of different vertical pipe test parameter calculation methods.The HTST01 test point was selected for vertical permeability test,and the HTST02 test point was selected for horizontal and vertical permeability tests,respectively.The rationality of the permeability coefficient value obtained by the traditional calculation method and the difference between its calculation results and the line-ar graphical method were analyzed.The results indicate that:the array of permeability coefficients obtained by traditional calculation methods approximately follows a non-standard normal distribution with certain skewness and kurtosis,all of which have moderate variability.The use of arithmetic mean values for parameter values has certain rationality and applicability.When using random calculation values,the error size of parameter values has contingency and uncertainty.The straight line graphical method can effectively avoid the generation of random errors,but the calculation results obtained by it differ from the arithmetic mean of traditional calculation methods to some extent.The average relative error value is 10.59%,and the maximum relative error value exceeds 27.00%.In the application process of vertical pipe tests,the influence of the rationality of parameter values obtained by calculation methods should not be ignored.

standpipe teststreambed sedimenttraditional calculation methodstraight line graphing methodpermeability coefficientmain stream of Hotan River

卜新峰、王俊智、顾龙龙、李亚哲

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黄河勘测规划设计研究院有限公司,河南 郑州 450003

水利部黄河流域水治理与水安全重点实验室(筹),河南 郑州 450003

华北水利水电大学 地球科学与工程学院,河南 郑州 450045

河南黄河水文勘测规划设计院有限公司,河南 郑州 450004

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竖管试验 河床沉积物 传统计算法 直线图解法 渗透系数 和田河干流

河南省重点研发与推广专项(科技攻关)项目黄河勘测规划设计研究院有限公司自主研发项目黄河勘测规划设计研究院有限公司自主研发项目

2121023111502020-KY022020-KY06

2024

人民黄河
水利部黄河水利委员会

人民黄河

CSTPCD北大核心
影响因子:0.494
ISSN:1000-1379
年,卷(期):2024.46(2)
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