Method for determining material composition and skeleton particle size of covering layer based on drilling photographing

A skeleton particle and covering layer technology, applied in particle and sedimentation analysis, particle size analysis, instruments, etc., can solve the problems of overburden drilling and coring and sampling difficulties, poor representativeness, etc., to improve accuracy and solve sampling difficulties. Effect
CN114460076APending Publication Date: 2022-05-10长江三峡勘测研究院有限公司(武汉)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
长江三峡勘测研究院有限公司(武汉)
Publication Date
2022-05-10

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Abstract

The invention discloses a method for determining material composition and skeleton particle size of a covering layer based on drilling photographing. The method comprises the following steps: photographing or shooting in a drilling hole of the covering layer to obtain photographing data of the inner side wall of the drilling hole; selecting a representative hole section or a to-be-interpreted hole section according to shooting data of the inner side wall of the drill hole, and exporting a picture of the representative hole section or the to-be-interpreted hole section to form a to-be-analyzed image map; zooming the to-be-analyzed image map to be equal to the actual drill hole in proportion to form a geological interpretation catalog display map; and according to the geological interpretation catalog display map, analyzing the material composition of the covering layer and the proportion of the area occupied by the particles with various particle sizes in the geological interpretation catalog display map. According to the method for determining the material composition and the skeleton particle size of the covering layer based on drilling photographing, photographing or camera shooting is adopted to obtain the photographing data of the inner side wall of the drilling hole, so that sampling is not needed for determination, the problems that the covering layer drilling coring and sampling are difficult, and the representativeness is poor are solved, and the working efficiency is improved. And the accuracy of identifying the material composition of the covering layer and the skeleton particles is improved.
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Description

technical field

[0001] The invention relates to an overburden borehole recording technology, in particular to a method for determining the material composition of an overburden layer and the size of a skeleton particle based on a photograph of a borehole. Background technique

[0002] The engineering characteristics of the covering layer are mainly determined by its material composition and the size of the skeleton particles. Generally, the fixed particle size of 5mm is used as the boundary particle size, that is, the particles smaller than 5mm are called fine materials, and the particles larger than 5mm are called coarse materials. This requires In the engineering geological survey, the material composition of the overburden and the size of the skeleton grains are accurately recorded.

[0003] The material composition of the traditional overburden layer and the determination of the particle size of the skeleton mainly rely on drilling cores or taking undisturbed samples for...

Claims

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