Simulation method and system for simulating numerical model of interbed rock mass and processing terminal

Abstract

The invention belongs to the technical field of interbed rock mass simulation, and discloses a simulation method and system for simulating an interbed rock mass fluid-solid coupling numerical model and a processing terminal. The simulation method comprises the following steps: setting mechanical parameters of entities in a generated spatial range, and generating a wall body; generating spheres, and setting the density; balancing the particles through iterative calculation; importing CAD drawings capable of generating different rock stratum dip angles, layer thickness ratios and layer thicknesses; grouping the particles, so that different layers of the CAD are filled with the particles; deleting the left and right wall bodies; endowing different groups of particles with different parallel bonding parameters, simulating rock mass attributes of different layers, and achieving the purpose of fluid-solid coupling by performing data exchange operation with OpenFoamt. The definition and simulation method of the interbed rock mass can be realized in software. According to the method, particle flow numerical simulation is adopted to analyze interbed rock mass mechanical property response rules and mesoscopic failure characteristics under the action of factors such as a rock mass dip angle, a layer thickness ratio and layer thickness from a mesoscopic perspective.

Description

technical field [0001] The invention belongs to the technical field of interbedded rock mass simulation, and in particular relates to a simulation method, system and processing terminal for simulating a numerical model of interbedded rock mass. Background technique [0002] At present: soft and hard interbedded rock masses mostly exist in tunnels, underground caverns and other fields, which are likely to cause engineering problems such as tunnel collapse and low tunnel excavation efficiency. Compared with homogeneous rock mass, the failure characteristics of soft and hard interbedded rock mass are significantly different, the failure process is more complicated, and it is more difficult to predict its failure precursor information. The three types of geometric characteristic factors such as rock dip angle, rock layer thickness, and weak layer content have a great influence on the delusion of interbedded rock mass. At present, there are few studies on the in-depth analysis o...

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Problems solved by technology

[0004] (1) The existing technology cannot accurately obtain the relevant parameters of the interbedded rock mass

[0005] (2) Geometric characteristic factors of interbedded rock mass in engineering (referring to layer thickness, layer thickness ratio, and rock layer dip angle) are often complex, and there is no effective method to obtain its mechanical properties

[0006] (3) The current research on the mechanical properties of interbedded rock mass mainly includes indoor (physical) experiments, numerical simulations, and indoor experiments. There will be large errors when the rock is thick and the inclination angle is large. During the curing process of the sample, there will be large errors in the curing conditions and curing process. The factors such as temperature and moisture are not easy to control. In the experiment, human error and test equipment Errors, etc. are more complex factors that affect the test results

[0007] (4) Numerical simulation mainly includes finite element, finite difference method, etc. During the simulation process of these methods, the finite element simulation difference is based on the grid, and the unit needs to be prepared artificially, which consumes time and needs to consider the sensitivity of the size

[0011] With the development of my country's rail transit, a large number of soft and hard interbedded rock masses composed of mudstone and sandstone in the tunnel crossing area are widely distributed. Because of their complex mechanical properties, it is easy to cause engineering stability problems such as surface settlement and tunnel collapse. However, at present The mechanical properties and failure mechanism of soft-hard interbedded rock mass are not comprehensive and in-depth

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