CAJ | 학술논문

基于深部巷道破裂围岩强度衰减规律研究成果，选择塑性参数作为损伤因子，根据室内预制初始损伤破裂岩样加卸载及其各级围压下的三轴压缩两试验结果，分别计算不同损伤破碎程度岩样卸载点的塑性参数值(初始损伤因子值)及其剪切强度参数c，φ值，初步建立深部巷道破裂围岩强度衰减模型；通过对初步建立的强度衰减模型中塑性参数的替换推导，建立以塑性参数εps表示的深部巷道破裂围岩强度衰减模型，使其可以直接运用于理论分析和数值模拟；将该模型植入FLAC3D中，结合实际深部巷道工程，对千米深井深部典型变形破坏巷道进行数值模拟分析，将数值模拟结果及相关结论与室内物理模拟和工程现场测试结果进行综合对比分析，验证了所建立模型的合理性。
기우심부항도파렬위암강도쇠감규률연구성과，선택소성삼수작위손상인자，근거실내예제초시손상파렬암양가사재급기각급위압하적삼축압축량시험결과，분별계산불동손상파쇄정도암양사재점적소성삼수치(초시손상인자치)급기전절강도삼수c，φ치，초보건립심부항도파렬위암강도쇠감모형；통과대초보건립적강도쇠감모형중소성삼수적체환추도，건립이소성삼수εps표시적심부항도파렬위암강도쇠감모형，사기가이직접운용우이론분석화수치모의；장해모형식입FLAC3D중，결합실제심부항도공정，대천미심정심부전형변형파배항도진행수치모의분석，장수치모의결과급상관결론여실내물리모의화공정현장측시결과진행종합대비분석，험증료소건립모형적합이성。
Based on the research result of strength degradation law of fractured surrounding rock at post-peak in deep roadway, plastic parameters having been selected as the damage factor, the value of plastic parameters (initial damage factor value) and the shear strength parameters c,φin unloading point of rock samples with different damage degree are calculated respectively according to the results of the interior precast initial damaged rock samples loading-unloading test and triaxial compression test conducted under all levels of confining pressure. The strength degradation model of damaged surround-ing rock in the deep roadway is preliminarily established. Through the replacement and derivation of the plastic parameters in the preliminary established strength degradation model, the final strength degradation model of damaged surrounding rock in the deep roadway, represented by the plastic parameterεps, is established so that it can be directly applied to the theoretical analysis and numerical simulation. When the model is implanted in FLAC3D , and then combined with the actual deep roadway engineering, the numerical simulation analysis is conducted in deep typical deformed and failure roadway in km deep mine. After the comprehensive comparison of numerical simulation results and its related conclusions with interior physical simulation and engineering field test results, the reasonableness of the established model is verified.