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Method for correcting stratum surface model by utilizing cross-correlation constraint of adjacent stratums

A model correction and cross-correlation technology, applied in the field of geostatistics, to improve the accuracy of modeling

Active Publication Date: 2021-05-14
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, it is necessary to provide a correction method of the stratum level model using the cross-correlation constraints of adjacent strata to solve the problem of how to correct the explicit model without relying on new data

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  • Method for correcting stratum surface model by utilizing cross-correlation constraint of adjacent stratums
  • Method for correcting stratum surface model by utilizing cross-correlation constraint of adjacent stratums
  • Method for correcting stratum surface model by utilizing cross-correlation constraint of adjacent stratums

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Embodiment 1

[0074] The embodiment of the present invention provides a correction method of the stratum layer model using the cross-correlation constraints of adjacent strata, combining figure 1 look, figure 1 It is a schematic flow chart of the correction method of the stratum level model using the cross-correlation constraints of adjacent strata provided by the present invention. The above-mentioned correction method of the stratum level model using the cross-correlation constraints of adjacent strata includes steps S1 to S7, wherein:

[0075] In step S1, the observation sample data and the existing model of the formation interface to be corrected are obtained;

[0076] In step S2, according to the observation samples, the elevation marginal characteristic functions of the stratum boundary to be corrected and the auxiliary stratum boundary are respectively counted, wherein the auxiliary stratum boundary is an adjacent stratum boundary of the stratum boundary to be corrected;

[0077] In...

Embodiment 2

[0194] An embodiment of the present invention provides a stratum layer model correction device using the mutual correlation constraints of adjacent strata, which includes a processor and a memory, and a computer program is stored in the memory. When the computer program is executed by the processor, the above-mentioned utilization of relative Strata-level model correction method with cross-correlation constraints on adjacent strata.

Embodiment 3

[0196] An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method for correcting a stratum layer model using the inter-correlation constraints of adjacent strata as described above is implemented.

[0197] The invention discloses a method for correcting a stratum level model using the mutual correlation constraints of adjacent strata. First, the observation sample data and the existing model of the stratum interface to be corrected are effectively obtained; then, the elevation is determined by using the statistical characteristics of the observation sample data The marginal characteristic function expresses the distribution characteristics of the stratum interface to be corrected and the auxiliary stratum interface; furthermore, the probability density of the existing model of the stratum interface to be corrected is estimated, which is effectively use...

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Abstract

The invention relates to a method for correcting a stratum surface model by utilizing cross-correlation constraint of adjacent stratums. The method comprises the following steps of: counting elevation marginal characteristic functions of a stratum interface to be corrected and an auxiliary stratum interface; estimating the elevation prior probability density corresponding to the stratum interface to be corrected; determining a joint distribution function according to the number of the auxiliary strata, the elevation marginal characteristic functions of the to-be-corrected strata interface and the auxiliary strata interface and the Copula function of the adjacent strata interface; determining a likelihood function corresponding to at least one coordinate point of the stratum interface to be corrected according to the elevation marginal characteristic function and the joint distribution function; according to the likelihood function, performing Bayesian updating on the elevation prior probability density of the stratum interface to be corrected, and determining elevation posterior probability density; and according to the elevation posterior probability density, updating an elevation value in the existing model of the stratum interface to be corrected. According to the method, the complex related structures of the adjacent stratums are described through the Copula method, model correction is carried out through correlation, and the modeling precision of an existing model is improved.

Description

technical field [0001] The invention relates to the technical field of geostatistics, in particular to a method for correcting a stratum level model utilizing mutual correlation constraints of adjacent strata. Background technique [0002] Most urban construction projects are located in areas covered by Quaternary sediments. In order to make scientific and rational use of urban underground space, it is necessary to study the geometric shape and spatial distribution of urban underground sediments. Therefore, the geological structure can be quantitatively described by establishing a stratum structure model. feature. However, in the process of geological survey, due to cost and technical limitations, sometimes the measurement data in some areas will have problems such as sparse sampling and uneven distribution of samples. When constructing a stratigraphic model based on such sample information, it is inevitable that some stratum samples are large and the precision of the strat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F17/18G06F17/15
CPCG06F30/13G06F17/18G06F17/15
Inventor 刘修国花卫华梁栋
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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