Intelligent calculation method for hydrogeological parameters of unstable flow pumping test
An unsteady flow and hydrogeological technology, applied in soil material testing, material inspection products, etc., can solve the problems of large wiring errors, low accuracy of hydrogeological differences, etc., to avoid visual errors, high fitting accuracy, The effect of improving calculation accuracy
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example 1
[0163] Example 1. Theis drawdown—time-optimized wiring method
[0164]The standard curve of this method is W(u)-1 / u, and the test curve is s-t, which belongs to the standard single curve wiring method.
[0165] There is a confined aquifer for pumping tests, the top and bottom of the aquifer are absolutely water-proof, and the lateral boundaries are not affected when pumping water, and the steady flow rate of the pumping well is 60m 3 / h, Well No. 14 is a complete pumping well, Wells No. 2, No. 15, No. 16, No. 10 and No. 9 are observation holes, and their observation data are shown in Table 1. The pumping test observation data of No. Drawdown-time alignment method to solve hydrogeological parameters of aquifer.
[0166] Table 1 Observation data of pumping test
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[0168]
[0169] Note: The actual distance between Hole 15 and the pumping well is r=125m, and the distance between Hole 16 and the pumping well is r=140m.
[0170] (1) Parameters input by the standard ...
example 2
[0190] Example 2. Standard curve wiring method of the first type of overcurrent system
[0191] The standard curve of the standard curve wiring method of the first type of leakage system is The test curve is s-t, and the standard curve is the wiring method of the curve family.
[0192] In a certain place, the sand and gravel flow aquifer is recharged by the upper phreatic flow flow, and there is an impermeable silt soil aquitard between the two. A complete well in the overflowing aquifer has been tested for pumping water, and the water inflow from the pumping well is Q=69.1m 3 / h, there is an observation hole 197m away from the pumping well, and the observation data are listed in Table 2 to determine the hydrogeological parameters of the aquifer.
[0193] Table 2 Observation data of pumping test
[0194]
[0195] The learning factor is used to change the particle swarm LnCPSO synchronously to realize the drawdown-time (s-t) actual data curve of the overflow system and ...
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