为掌握风氧化作用下巷道变形特征和失稳机理,根据工程实测和室内岩石力学实验,确定围岩风氧化程度评价指标体系。通过相似模拟实验确定了不同风氧化程度巷道围岩相似模拟配比;自研相似模拟实验平台,采用数字散斑、声发射测试等手段,分析不同风氧化实验条件下巷道变形特征、宏细观破坏情况。通过实验模拟分析,得出不同类型风氧化顶板变形演化过程及宏观破坏特征。实验结果可为风氧化复杂条件下巷道稳定性研究提供理论和实验基础。

In order to understand the deformation characteristics and instability mechanism of tunnels under theaction of wind oxidation,this study establishes an evaluation index system for the degree of rock wind oxidationbased onengineeringmeasurements andlaboratoryrockmechanicsexperiments.Similarsimulationexperiments are conducted to determine the simulation ratios of tunnel surrounding rocks with different degreesof wind oxidation.A self - developed similar simulation experimental platform is methods such as digitalspeckle pattern interferometry and acoustic emission testing are employed to analyze the deformation characteristics and macro- and micro-failure conditions of tunnels under different wind oxidation experimental conditions.Through experimental simulation analysis,the evolution process of roof deformation and macroscopic failure characteristics under different types of wind oxidation are obtained.The experimental results can provide atheoretical and experimental basis for the study of tunnel stability under complex conditions of wind oxidation.