Earth-rock dam construction material grain composition examination method based on digital image processing

Abstract

The invention discloses an earth-rock dam construction material grain composition examination method based on digital image processing, and relates to the field of dam construction material grain composition. The method comprises the following steps that S1. digital images of grains are acquired; S2. processing, recognition and information extraction and conversion of the digital images are performed and then a composition curve based on image recognition is constructed; S3. a mathematical model is constructed through nonlinear fitting of the composition curve; and S4. a training database of the one-to-one correspondence relationship of the determined image recognition mathematical model parameters and field screening mathematical model parameters is constructed. The beneficial effects of the method are that the learning and training database of the field screening test composition curve data and the image recognition composition curve data of large samples is established to form contrast, then the function relationship between the two is determined based on an intelligent optimization algorithm and error is corrected by using the function relationship so that a set of rapid and accurate dam construction material composition quality examination method is formed.

Description

technical field [0001] The invention relates to the field of particle gradation of dam-building materials, in particular to a method for inspecting particle gradation of earth-rock dam dam-building materials based on digital image processing. Background technique [0002] For earth-rock dams, during the filling process of the dam body, effective control of the quality of dam materials is an important measure to ensure its safe and normal operation during the construction and operation periods, and the particle size distribution of dam materials directly affects its quality. important criteria. In domestic and foreign industry norms, there are clear requirements for the particle size distribution of dam materials, such as SL274-2001 "Code for Design of Roller-Compacted Earth-rock Dams", which requires P5 (with a limit of 5mm for thickness Material) content in 30% to 50%. However, during the construction process, the method for inspecting the particle gradation of dam materi...

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Problems solved by technology

[0012] Aiming at the deficiencies of the prior art, the present invention provides a method for inspecting particle gradation of earth-rock dam materials based on digital image processing, which can effectively solve the problem of extremely low efficiency of the prior art, which seriously affects the construction progress, and its accuracy and reliability degree depends entirely on the operator's level of operation

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