摘要
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。
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.
作者
卜新峰
王俊智
顾龙龙
李亚哲
BU Xinfeng;WANG Junzhi;GU Longlong;LI Yazhe(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China;Key Laboratory of Water Management and Water Security for Yellow River Basin(Under Construction),Ministry of Water Resources,Zhengzhou 450003,China;College of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450045,China;Henan Yellow River Hydrology Reconnaissance&Design Institute,Zhengzhou 450004,China)
出处
《人民黄河》
CAS
北大核心
2024年第2期118-122,128,共6页
Yellow River
基金
河南省重点研发与推广专项(科技攻关)项目(212102311150)
黄河勘测规划设计研究院有限公司自主研发项目(2020-KY02,2020-KY06)。
关键词
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
standpipe test
streambed sediment
traditional calculation method
straight line graphing method
permeability coefficient
main stream of Hotan River
