各向异性介质中大口径潜水完整井流公式

Di charge formula of big diameter penetrated greundwater well in anisotropic media

在某些渗透系数低的潜水含水层中,大口径井的井径r_w不能概化为零,这就使其井流问题复杂化。本文推导了各向异性介质中大口径潜水完整井流公式,对于相应条件下的井流试验,文中推导的两个公式具有实用价值,在试验现场就可很方便地求出各向异性渗透系数K_x、K_y。

In the low permeable groundwater aquifer, the diameter r_w of big well cannot be simplified as taking to zero.This makes the well discharge problem complicated. This paper derives the discharge formula of big diameter penetrated groundwater well. The two derived formulae have practi al value for well discharge testing under the above—stated conditions. The anisotropic permeability coefficients K_x and K_y can be conveniently obtained in the field of testing.