Method for 3D printing of similar-goaf simulated building

A technology similar to simulation and 3D printing, applied in 3D modeling, CAD numerical modeling, geometric CAD, etc., can solve problems such as lack, and achieve the effect of realizing structural simulation and solving deformation observation problems.

Active Publication Date: 2021-02-26
NORTH CHINA INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] (2) When making simulation experiments, two heterogeneous materials, architectural simulation materials and geotechnical simulation materials, are produced se

Method used

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  • Method for 3D printing of similar-goaf simulated building
  • Method for 3D printing of similar-goaf simulated building
  • Method for 3D printing of similar-goaf simulated building

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1 influences the mechanical property test of 3D printing specimen

[0058] 1. Test method

[0059] Because the mechanical properties of the printed models obtained by changing the process and parameters under the same 3D printer are also different, so we can get certain rules through experiments. Therefore, under the condition of not changing the 3D printer, test the influence of different parameters on the printing model through orthogonal experiments, so as to find the most suitable parameters.

[0060] 1. Main process parameters of FDM technology

[0061] There are many control factors for the 3D model printed by FDM technology, which more or less affect the mechanical strength and processing time of the printed model. But the most important ones are controlled by the following process parameters, which are: filling rate, printing layer thickness, and printing materials.

[0062] (1) Filling rate: the actual proportion of the filling material to the tot...

Embodiment 2

[0087] Embodiment 2 Development of solid-liquid coupling similar simulation test material

[0088] 1. Design of similar simulation test scheme

[0089] 1. Similar material test selection

[0090] Based on the geological and mining conditions of Yaping Coal Mine, this experiment uses a two-dimensional solid-liquid coupling similar simulation experimental device designed by the School of Safety Engineering, North China Institute of Science and Technology, and builds a similar material model to study the rock formation damage caused by fully mechanized caving mining in Yaping Coal Mine. The law of surface movement.

[0091] According to the main mechanical property parameters of the rock strata in Yaping Coal Mine, river sand is used as aggregate, gypsum and putty powder as cement, and mica sheet as layered material to simulate rock bedding according to the previous experience in proportioning.

[0092] 2. Design and manufacture of similar models

[0093] The design of this em...

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Abstract

The invention discloses a method for 3D printing of a similar-goaf simulated building. The method comprises the steps of calculating mechanical strength similarity ratio of the simulated building to aprototype by similarity criteria; selecting 3D model materials with similar mechanical strength; adjusting parameters influencing the mechanical strength of the materials, and selecting according tothe mechanical strength requirement of the simulated building; performing model construction by applying 3D software; and enabling a 3D printer to print a simulated building model. Mechanical similarity and geometric similarity matching of the building are controlled through 3D printing materials, the filling rate, the printing angle and the like, the deformation observation problem of the buriedstructure is solved, and structural simulation of the multi-storey building is achieved.

Description

technical field [0001] The invention relates to the technical field of preparation of similar simulated buildings in goafs. Specifically, it is a method of 3D printing gobs similar to simulated buildings. Background technique [0002] The land subsidence induced by the large-scale mining of mines leads to the damage of the surface buildings (structures), and even the occurrence of heavy casualties is not uncommon. It is an urgent problem to be solved to ensure the safety of production and life in mining areas by studying the mechanism of mining damage to buildings (structures) caused by mining settlement and mastering the related laws of building damage and surface subsidence. [0003] At present, the simulation experiment of similar materials is one of the important research methods to study this kind of problems. The production principle of this method is that the model is similar to the prototype, and the stress-strain parameters and their distribution laws in the model...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06T17/00G06K9/62B29C64/386B33Y50/00G06F111/10G06F113/10G06F119/14
CPCG06F30/13G06T17/00B29C64/386B33Y50/00G06F2111/10G06F2113/10G06F2119/14G06F18/22
Inventor 易四海景胜强晏涛徐斌贾铮刘英海
Owner NORTH CHINA INST OF SCI & TECH
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