Simulation modeling method for simulating rock breaking process of laser-assisted tool

Abstract

A simulation modeling method for simulating the rock breaking process of a laser-assisted cutter comprises the following steps: S1, adopting at least one means including but not limited to simulation,testing and theoretical modeling, and obtaining the contour morphology of a slotted hole formed in the surface of rock under the action of laser, wherein the slotted hole comprises a hole and a cutting groove; S2, establishing a hob rock breaking simulation model, wherein the rock simulation model prefabricates a slotted hole with the same contour morphology as the S1; and S3, based on the hob rock breaking simulation model built in the S2, performing hob rock breaking simulation analysis to approximately simulate the laser-assisted tool rock breaking process. The method is easy to implement,easy and convenient to operate and accurate in obtained result, can be used for verifying the feasibility of laser-assisted TBM hob rock breaking, and provides reference for actual engineering application.

Description

technical field [0001] The invention belongs to the intersecting fields of underground space engineering, geotechnical engineering, laser processing engineering and computer-aided engineering, and relates to a simulation modeling method for simulating the process of laser-assisted tool breaking rock (generally referring to rock and soil), in particular to a simulated laser A finite element simulation modeling method for rock breaking process of auxiliary full-face hard rock tunnel boring machine (hereinafter referred to as TBM) disc hob (hereinafter referred to as hob). Background technique [0002] With the advent of many high-efficiency rock-breaking technologies such as high-pressure water jets, microwaves, plasma blasting, and lasers, the above-mentioned rock-breaking technologies are expected to be further extended and applied to existing traditional tunneling equipment and rock-breaking tools to assist the existing The rock-breaking tool (hereinafter referred to as the...

AI Technical Summary

Problems solved by technology

However, in the field of laser-assisted tools, especially hob rock breaking, there are few reports

In particular, because the laser rock breaking process involves issues such as thermal stress coupling, phase transformation, and new substance generation, while the tool rock breaking process involves mechanical stress removal and transient nonlinear deformation, conventional simulation modeling methods are used, and in Under the computing environment provided by the existing large-scale commercial simulation modeling software, it is difficult to simulate the entire process of laser-assisted tool rock breaking, and reflect the macro and micro characteristics and physical and mechanical properties that are completely consistent with the actual situation.

[0005] At present, there is a lack of simulation modeling methods that meet the accuracy of engineering applications and can simulate the rock breaking process of laser-assisted tools

Images