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

Pending Publication Date: 2021-04-23
张勇
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  • Application Information

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Problems solved by technology

[0012] In view of the above-mentioned deficiencies in the prior art, the intelligent calculation method of the hydrogeological parameters of the unsteady flow pumping test provided by the present invention solves the problem in the prior art that the artificial wiring error is large, resulting in a low accuracy rate of the calculated hydrogeological difference

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  • Intelligent calculation method for hydrogeological parameters of unstable flow pumping test
  • Intelligent calculation method for hydrogeological parameters of unstable flow pumping test
  • Intelligent calculation method for hydrogeological parameters of unstable flow pumping test

Examples

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Effect test

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

[0167]

[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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Abstract

The invention discloses an intelligent calculation method for hydrogeological parameters of an unstable flow pumping test, and the method comprises the steps: obtaining observation test data based on the unstable flow water pumping test, and drawing a test curve; constructing a deviation quadratic sum objective function during wiring fitting of the test curve and the standard curve according to a least square method principle; initializing parameters in the intelligent optimization algorithm, solving the minimum value of the wiring deviation square and the target function through the intelligent optimization algorithm, and completing optimal fitting of the test curve and the standard curve; when the standard curve is a single curve, calculating the longitudinal and transverse movement distances of the test curve during optimal fitting, and when the standard curve is a curve cluster, calculating the longitudinal and transverse movement distances of the test curve during optimal fitting and standard curve matching parameters; and when the test curve and the standard curve are subjected to optimal wiring fitting, randomly selecting a matching point, and calculating hydrogeological parameters according to the values of the matching point in the two coordinate systems.

Description

technical field [0001] The invention belongs to the field of calculation of hydrogeological parameters, and in particular relates to an intelligent optimization wiring calculation method for hydrogeological parameters of an unsteady flow pumping test. Background technique [0002] Hydrogeological parameters are very important data for studying groundwater movement. For many years in the field of hydrogeology, pumping test has been regarded as the most effective, reliable and basic method, and it is one of the main field tests required to obtain hydrogeological parameters of aquifers. , divided into steady flow pumping test and unsteady flow pumping test. The steady flow pumping test method is simple and fast, but the shortcoming is that few hydrogeological parameters are obtained, and some important hydrogeological calculations cannot meet the requirements. [0003] To obtain more hydrogeological parameters, unsteady flow pumping tests are required. Unsteady flow pumping te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 张勇
Owner 张勇
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