A method for adjusting a rockfill rolling scheme based on the technology of particle grading and visual identification of material composition

Abstract

The invention discloses a method for adjusting a rock-fill rolling scheme based on the technology of particle grading and visual identification of material composition. The steps are as follows: 1, creating a characteristic pattern database of rockfill material: establishing that correspond relationship between the particle color, the texture distribution, the crack size and the lithology categoryand the weathering degree of the rockfill material in a sample image, and providing a database source for subsequent image matching; 2, image acquisition: taking photographs of that rock-fill material to be rolled and collecting images; 3, image recognition and pattern matching: carrying out digital processing on the collected images, and calculating the material gradation according to the gray value of the particle areas of different sizes; extracting material characteristics, and determining the characteristics of material lithology and weathering degree by matching with pattern database; 4, transformation of image recognition results and rolling scheme: firstly, constructing the rolling scheme database, and then, according to the results of image recognition and pattern matching, modifying and adjusting the rolling scheme by comparing with the rolling scheme database. The invention can adjust the rolling scheme and avoid under-pressure phenomenon.

Description

technical field [0001] The invention belongs to the technical field of rockfill dam filling and rolling, and in particular relates to a method for adjusting a rockfill rolling scheme based on particle gradation and material composition visual recognition technology. Background technique [0002] The concrete face rockfill dam scheme is a commonly used dam type for the upper reservoir of the pumped storage power station. Since the compaction effect of the rockfill body is the key factor to control the settlement deformation of the dam body and prevent cracks in the face plate, how to ensure the rolling quality during the filling process is an important technical issue of the entire project. At present, the rolling process of rockfill dams is mostly based on the requirements of the "Code for Construction of Rolled Earth-rock Dams". Before the filling construction, the on-site rockfill rolling test is carried out to determine the corresponding dam body rolling parameters. Once...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In order to overcome the problem of uneven spatial distribution of material characteristics of the rolling surface in the prior art, the present invention provides a method of collecting real-time photos of the working surface during rolling construction, and using image intelligent recognition technology to identify particles ...

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