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Underground water multi-target calculation method based on land subsidence substitution model

A technology for land subsidence and model substitution, which is applied in computing, instrumentation, data processing applications, etc., can solve the problems of high cost of optimization calculation and large amount of calculation of regional models, and achieves the goal of improving evaluation accuracy, improving convergence, and improving solution efficiency. Effect

Active Publication Date: 2018-06-08
HOHAI UNIV
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Problems solved by technology

Considering the parameter complexity of the land subsidence model and the large amount of calculation of the regional model, a large number of calls to the numerical model in the optimization will generate thousands of times the amount of calculation, and even create a calculation bottleneck, resulting in high optimization calculation costs

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  • Underground water multi-target calculation method based on land subsidence substitution model
  • Underground water multi-target calculation method based on land subsidence substitution model
  • Underground water multi-target calculation method based on land subsidence substitution model

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0044] The present invention constructs the groundwater multi-objective calculation method SUB-KELM&SMOMA based on the KELM self-adaptive surrogate model, which is composed of objective function evaluation and multi-objective evolution based on the land subsidence surrogate model, and through an ideal groundwater exploitation scheme optimization considering the land subsidence constraint Examples are verified. This method first uses the SUB-WT module in the land subsidence simulation program (Modular Three-dimensional Finite-difference Ground-water Flow Model, MODFLOW2005) to establish a groundwater ground subsidence coupling model in the simulation area, and uses the KELM method to train the ground subsidence substitute model SUB-KELM . Then, by coupling NSGAII with SUB-KELM, NSGAII introduces the Gaussian perturbation neighborhood search strateg...

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Abstract

The invention belongs to the field of hydrology and water resources and discloses a land subsidence region underground water simulation-optimization calculation solving technology based on an adaptivesubstitution model, namely an underground water multi-target calculation model (SUB-KELM&SMOMA) based on a land subsidence substitution model. According to the technology, a land subsidence simulation subprogram SUB-WT in an underground water simulation program MODFLOW-2005 is adopted to simulate the land subsidence process, and an extreme learning machine method KELM is adopted to train the landsubsidence substitution model; a broad, stable and effective optimization algorithm NSGAII is adopted for an optimization model; and in order to improve the precision of value prediction of dominantindividuals, a neighborhood search method and an adaptive KELM method are adopted to train the land subsidence model. SUB-KELM&SMOMA is the first to consider the problem of a large-scale calculation bottleneck of the land subsidence model, the proposed land subsidence substitution model is coupled to an optimization solving model based on an evolution algorithm, and therefore a fixed technical method system can be provided for realizing the two core projects of reasonable development and utilization of underground water resources in a land subsidence region and land subsidence control and disaster reduction.

Description

technical field [0001] The invention relates to a groundwater multi-objective calculation method based on a land subsidence substitute model, belonging to the fields of hydrology and water resources. Background technique [0002] The scientific calculation of groundwater resources in land subsidence areas is an important resource and environmental issue. It involves two core issues: the rational development and utilization of groundwater resources and the prevention and control of land subsidence. The contradiction between subsidence prevention and groundwater exploitation has become a difficult problem for geo-environmental workers to solve, and a fixed technical method system has not yet been formed. [0003] The simulation-optimization method is an effective technology to solve the problem of groundwater resource management and disaster prevention and control optimization in land subsidence areas. This method system couples the coupled model of regional groundwater and l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/06315G06Q50/06
Inventor 杨蕴王锦国周志芳
Owner HOHAI UNIV
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