Numerical simulation-based simulation method for the whole process of grouting dynamics in gobs

Abstract

The invention belongs to the field of goaf grouting visualization simulation. On the basis of a three-dimensional geometrical geological information model, a three-dimensional Bingham fluid mathematical model is established, and the three-dimensional dynamic overall process simulation of storm surge flood routing is realized according to a grouting numerical simulation result. In order to fulfill the aims, the invention adopts the technical scheme that a goaf grouting dynamic overall process simulation method based on numerical simulation comprises the following steps of: (1) establishing a grouting three-dimensional network model which is coupled with the complex stratum information of a goaf; (2) establishing a goaf grouting three-dimensional mathematical model; (3) dynamically simulating the grout flowing of the goaf; (4) performing goaf grouting dynamics calculation; and (5) performing post-processing and visualization output on three-dimensional dynamic overall process simulation. The goaf grouting dynamic overall process simulation method based on the numerical simulation is mainly applicable to the field of goaf grouting in an engineering technology.

Description

technical field [0001] The invention belongs to the field of visual simulation of goaf grouting, and relates to three-dimensional numerical simulation of goaf grouting and a numerical simulation-based three-dimensional dynamic whole-process simulation method of goaf grouting. Specifically, it involves a numerical simulation-based simulation method for the dynamic whole process of goaf grouting. Background technique [0002] Mined-out area refers to the area where the hollow area and its surrounding rock after the mining of the underground solid ore deposit are displaced, cracked, broken and collapsed due to instability, until the surface deformation and damage caused by the overall subsidence and bending of the overlying rock layer or scope. Due to the existence of gobs, the movement and subsidence of the ground surface are accompanied by continuous or discontinuous deformation. Coal mining subsidence damages the environment very seriously. Due to the large-scale and large...

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Problems solved by technology

[0006] In terms of grouting visualization, Xu Jie et al. developed an intelligent grouting recorder, which provides a useful reference for the visualization of the grouting process, but this method is mainly based on experiments and does not involve numerical simulation; Yan Shuwang et al. 3D visualization of the grouting process of soil slope bolt reinforcement, but without numerical simulation, only a schematic effect simulation

[0007] To sum up, the dynamic simulation of the whole process of grouting based on numerical simulation has not been reported yet.

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