Random structural plane network contained rock mass model 3D printing and mechanical parameter acquisition method

Abstract

The invention provides a random structural plane network contained rock mass model 3D printing and mechanical parameter acquisition method. The method comprises the steps of sampling a natural rock mass containing a random structural plane network, obtaining a three-dimensional space scanning image or a three-dimensional space distribution characteristic of the structural plane network, and obtaining mechanical parameter values of the structural plane network; and taking rock sampled at the same place of the natural rock mass for 3D printing to obtain a copy model, comparing mechanical parameter values of the copy model and the natural rock mass sample, adjusting a printing scheme until the copy model and the natural rock mass sample have similar mechanical properties, printing a plurality of copy models according to the adjusted printing scheme, carrying out various physical and mechanical tests, and obtaining mechanical parameters. According to the method, the natural rock mass structure can be accurately simulated, the mechanical properties of the rock mass containing the random structural plane network can be effectively researched, meanwhile, the random structural plane network of the rock mass can be repeatedly reproduced, multiple groups of tests can be conveniently carried out to obtain different mechanical parameters of the model, and the method has important significance on research on the mechanical property of the rock mass containing the random structural plane network.

Description

technical field

[0001] The invention relates to a 3D printing and mechanical parameter acquisition method of a rock mass model containing a random structural plane network, belonging to the field of rock mechanics. Background technique

[0002] The random structural plane network developed in rock mass significantly affects the mechanical behavior of rock mass, such as deformation and failure, thus endangering the safety and service life of rock mass engineering. It is a practical requirement to carry out the acquisition of mechanical parameter values ​​of rock mass with structural plane network. For this reason, multiple identical rock mass random structural plane network samples that can be tested repeatedly are required. In practice, the geometric characteristics and mechanical properties of the discontinuity network in different locations even in adjacent locations are not the same. Therefore, a technology that can repeatedly reproduce the random discontinuity network of...

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