Simulated Annealing Rayleigh Wave Inversion Method Based on Differential Evolution and Block Coordinate Descent

A technology of block coordinate descent and simulated annealing, applied in genetic models, genetic laws, seismology, etc., to achieve the effect of improving prediction accuracy, achieving controllability, and improving stability

Active Publication Date: 2021-05-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0004] The main purpose of the present invention is to provide a simulated annealing Rayleigh wave inversion method that can improve the accuracy and stability of simulated annealing inversion in Rayleigh wave exploration, aiming to solve the above technical problems existing in existing methods

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  • Simulated Annealing Rayleigh Wave Inversion Method Based on Differential Evolution and Block Coordinate Descent
  • Simulated Annealing Rayleigh Wave Inversion Method Based on Differential Evolution and Block Coordinate Descent
  • Simulated Annealing Rayleigh Wave Inversion Method Based on Differential Evolution and Block Coordinate Descent

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[0042]In order to make the objectives, technical solutions and advantages of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It will be appreciated that the specific embodiments described herein are intended to explain the present invention and is not intended to limit the invention.

[0043]Rylebo inversion is a highly nonlinear, multi-mode problem. The annealing algorithm is mainly facing two problems in the Raylebo inversion: First, Ryarebo inversion is a multi-parameter problem. As the number of inversion layers increases, the inversion parameters will be increased, and analog annealing algorithm It is more suitable for solving parameter problems, and when the inversion parameter changes, it will seriously affect the final result. Second, analog annealing is stocked at temperatures, and the search direction is random, and when the algorithm terminates, the inversion may not necessarily ...

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Abstract

The invention discloses an improved simulated annealing Rayleigh wave inversion method based on differential evolution and block coordinate descent. The method firstly constructs the inversion objective function, and then uses the differential evolution algorithm to optimize the parameter model of the inversion objective function to obtain After the optimal individual, the block coordinate descent algorithm is used to perform simulated annealing on each individual, and the obtained new individual is used as the individual of the next generation population. The present invention constructs the inversion objective function, uses the differential evolution algorithm to optimize the inversion objective function, and uses the block coordinate descent method to divide the multi-parameter problem into multiple single-parameter local iterative optimization problems, which can effectively improve the performance of simulated annealing inversion. Accuracy, to achieve the controllability of simulated annealing to the accuracy, thereby improving the stability of simulated annealing, and can be applied to the inversion of actual shallow exploration seismic data to improve the prediction accuracy of near-surface subsurface structures.

Description

Technical field[0001]The present invention relates to a near-surface geophysical exploration technique, which is a high-precision near-surface Rileirebo inversion method, which can be applied to the near-surface speed survey, geotechnical engineering, oil and gas exploration near surface speed analysis, underground engineering detection. .Background technique[0002]Rilei Wave is a wave formed from the free interface when propagating with the horizontal wave vertical components along the free interface, along the free interface. Rylebo is usually propagated along the ground, which is very sensitive to the thickness of the formation (XIA et al, 1999), and has a frequency of resilience (Horse, Youth, 2010), compared to conventional exploration methods, Rui Leibo exploration has the advantages of high resolution, fast detection speed, etc. (Jisheng Wen, 2002). Many scholars have studied Ryarebo, forming a geological structure survey method based on Raylebo, such as Ryori Multi-road analy...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28G06N3/12
CPCG01V1/28G01V1/282G06N3/126
Inventor 王峣钧伍锡军张真梁邢凯胡光岷
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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