Optimization of Laser Irradiation Rock Process Parameters Based on Response Surface Methodology

Abstract

Aiming at the problem that mechanical rock-breaking is difficult when facing complete high-strength surrounding rock, laser irradiation rock can weaken the strength of rock and effectively improve the rock breaking efficiency. In this paper, the optimization of laser irradiation rock process parameters was carried out. The laser irradiation rock test was conducted using the laser irradiation rock test platform under the conditions of different laser power, spot movement speed and spot diameter. The prediction model of the rock uniaxial compression strength was established based on the response surface methodology, and the mapping relationship between laser process parameters and the rock uniaxial compression strength was explored. With the minimization of the rock uniaxial compression strength as the optimization objective, the laser process parameters were optimized, and the feasibility of the optimization method was verified by experiments. The results showed that the minimum rock uniaxial compression strength obtained from the optimized process parameters decreased by 30.32% compared to the initial rock uniaxial compression strength. The prediction model constructed in this paper has good stability, strong generalization ability and prediction accuracy for the prediction of the rock uniaxial compression strength. The results of the study provide a scientific basis and engineering guidance for the selection of laser parameters in laser rock-breaking technology.