CAJ | 학술논문

目前对TBM滚刀破岩效率评价大多采用量化计算破岩比能（ηse ）的方法，其中岩石破碎体积为影响破岩比能的关键因素，岩石在滚刀作用下的破坏体积与其破坏方式关系密切。为此，结合岩石不同破坏方式，讨论了岩石破碎体积的一种简易实用的计算方法。基于岩石破坏过程中以剪切破坏和张拉破坏为主的特性，提出了以岩石破坏时裂纹长度与剪切面在岩石自由表面投影长度以及滚刀刀刃宽度之间的关系来识别岩石破坏方式，在此基础上计算岩石破碎体积，结合CSM预测模型，推导出一种破岩比能水平量化计算方法。通过实例对该方法进行计算验证，分析了破岩比能（ηse ）与刀间距（S）、刀具磨损量（w ）之间的关系，得出了ηse －S曲线与ηse － w曲线，表明存在最优刀间距，且随着磨损量增大，比能值也将增大。所述的预测模型能够对TBM破岩时刀间距的优化、刀具的更换提供理论依据。
목전대TBM곤도파암효솔평개대다채용양화계산파암비능（ηse ）적방법，기중암석파쇄체적위영향파암비능적관건인소，암석재곤도작용하적파배체적여기파배방식관계밀절。위차，결합암석불동파배방식，토론료암석파쇄체적적일충간역실용적계산방법。기우암석파배과정중이전절파배화장랍파배위주적특성，제출료이암석파배시렬문장도여전절면재암석자유표면투영장도이급곤도도인관도지간적관계래식별암석파배방식，재차기출상계산암석파쇄체적，결합CSM예측모형，추도출일충파암비능수평양화계산방법。통과실례대해방법진행계산험증，분석료파암비능（ηse ）여도간거（S）、도구마손량（w ）지간적관계，득출료ηse －S곡선여ηse － w곡선，표명존재최우도간거，차수착마손량증대，비능치야장증대。소술적예측모형능구대TBM파암시도간거적우화、도구적경환제공이론의거。
To evaluate the efficiency of TBM disc cutters ,the common practice is to calculate the specific energy for rock breaking with the volume of fragmentized rocks as the key influencing indicator .Different fragmentation methods result in varied volumes of fragmentized rocks when adopting TBM disc cutters . Based on the study of different fragmentation mechanism ,such as shear failure ,tensile failure ,compression failure and the combination of multiple failure modes ,a simple method to calculate the volume of fragmentized rocks was put forwarded .Based on the fact that the shear failure and tensile failure are the main forces during the fragmentation ,an identification method of different failure modes was suggested based on the quantitative relationship of the crack length ,the projected length of the shear failure surface and the width of the cutter .And then the volume of fragmentized rocks was calculated to derive a new algorithm that could quantify the specific energy with the help of a CSM model .Finally ,an example was used to prove the feasibility of this method .The relationship between specific energy and the cutter space ,also the relationship between specific energy and the wear condition was analyzed ,from which the ηse - S curve and the ηse -w curve were obtained .This application proves that there is an optimal cutter space ,and the ηse increases with the wear condition .This model could be used to provide a reference for the performance prediction and optimization of TBM disc cutters .