Chapter 10 : Groundwater Collection¶

Example 10.1 Page No : 10-14¶

In :

#initialisation of variables
w1 = 1000.	#ft
w2 = 2000.	#ft
r = 700.	#gpm
d = 10.  	#days
q = 2	    #ft
u = 1.87*((3.4*10**-5)/(3.2*10**4))*(d**6/d)	#ft
W = 7.94	#ft
p = 114.6*(7*10**2)*W/(3.2*10**4)	#ft
U = 1.87*((3.4*10**-5)/(3.2*10**4))*(4*d**6/d)	#ft
Wu = 6.55	#ft
P = 114.6*(7*10**2)*Wu/(3.2*10**4)	#ft
R = 54	#ft

#CALCULATIONS
W1 = R+p+P	#ft
D = R+q*p	#ft

#RESULTS
print 'the expected drawndown the first well is pumped at a rate = %.0f ft'%(W1)
print 'the drawdown in each well all the three are pupped at a rate = %.0f ft'%(D)
the expected drawndown the first well is pumped at a rate = 90 ft
the drawdown in each well all the three are pupped at a rate = 94 ft

Example 10.3 Page No : 10-19¶

In :

#initialisation of variables
g = 20	#ft
k = 10**-1	#cm/sec
g1 = 3.28*10**-3	#fps
w = 2	#ft
w1 = 30	#ft

#CALCULATIONS
Q = (1./2)*(g1)*((g**2)-(2**2))/(w1)	#cfs

#RESULTS
print 'the flow into a foot of gallery = %.1e cfs'%(Q)
the flow into a foot of gallery = 2.2e-02 cfs