河床沉积物竖管试验求参方法应用与评价.

Using the vertical pipe test data of riverbed sediment in the downstream section of the main stream of Hotan River, the paper carried 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 linear 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. [ABSTRACT FROM AUTHOR]