支护应力对巷道围岩临界应力影响的数值模拟研究
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中图分类号：TD322/353 文献标志码：A
DOI：10.13272/j.issn.1671-251x.2025090003
Abstract：The disturbance response instability theory for rock burst derives the theoretical formulasand instabilitycriteriaforrockburstoccurrence.However，theanalytical solutionforthecriticalstressoftheroadway surounding rockdoes notconsider complex geological structures suchas heterogeneous strata，as wellas variable loadingconditions.Toaddress this isse，this study integrated the disturbance response instability theory forrock burst with StrataKing-3D，the paralel computing system for stratum movement.The impact of roadway support stress onthe critical stresswas investigated fromtwo aspects：the simplified homogeneous modeland the practical engineering model （takingaroadway in theLongjiabao coal mineas an example）.Aditionally，the safetyfactor of theroadway in the engineering model was calculated to evaluate the safety of the roadway surrounding rock. Theresults showed that for the homogeneous model， the numericalycalculated value of thecritical stress of the roadway surrounding rock was higher than the theoretically calculated value，which qualitatively agreed with the surveydata from 2Orock burst mines across thecountry.For the practical engineering model，when the support stress was 0.4MPa ，the numerically calculated value of the critical stress of the roadway surrounding rock was 35.61MPa ，which was basically consistent with the current coal seam critical stress （ 36.9MPa ，validating the accuracy of the method combining theoretical and numerical calculations. When the support stress increased to 0.8MPa ，the critical stress reached 44.69MPa ，and the safety factor was 1.05， indicating that the roadway was basically safe. The research findings provide a new method for determining the roadway support stress.
Key words： rock burst; support stress；surrounding rock critical stress； disturbance response instability theory; stratum movement parallel computing; safety factor
0引言
在冲击地压防控中，支护形式按照作用机制可分为主动支护和被动支护[1-2]。（剩余14322字）
