Abstract: This paper puts forward a new solution for non-pressure seepage calculation we obtain the following monotone continuous function.f(h₀)=h₂-h₁+h₀ln（h₂-h₀)/(h₁-h₀)-il,(i>0)(1)
f(h'₀)=h₁-h₂+h'₀ln(h₂+h'₀)/(h₁+h'₀))-i'l.(i<0)(2)Furthermore, basing on the function exp.(1) or using the dichotomy we obtain ho or ho'. We present the results of the general program of TI59/58C pocket calculator and calculate three con crete examples.

摘要： 本文建议无压缓变渗流计算的一个新解法。文中得到单调连续函数:f(h₀)=h₂-h₁+h₀ln（h₂-h₀)/(h₁-h₀)-il,(i>0)(1)
f(h'₀)=h₁-h₂+h'₀ln(h₂+h'₀)/(h₁+h'₀))-i'l.(i<0)(2)且根据函数式(1)或(2)用二分法解得h₀或h'₀。