CAJ | 학술논문

根据土压平衡盾构机施工过程中土舱压力监测数据，利用奇异谱分析方法对土舱压力时间序列进行奇异值分解和分组重构处理，并在此基础上利用线性递归关系对其进行数值预测。结果表明奇异谱分析方法能够有效分离出土舱压力时间序列中的主要影响因素，尤其是在微弱周期性成分提取方面效果显著，并能够明显降低土舱压力信号中的噪声干扰作用，提高土舱压力预测的精度和稳定性。将奇异谱分析方法应用于土舱压力序列分析将有助于实现土舱压力的预测性控制。
근거토압평형순구궤시공과정중토창압력감측수거，이용기이보분석방법대토창압력시간서렬진행기이치분해화분조중구처리，병재차기출상이용선성체귀관계대기진행수치예측。결과표명기이보분석방법능구유효분리출토창압력시간서렬중적주요영향인소，우기시재미약주기성성분제취방면효과현저，병능구명현강저토창압력신호중적조성간우작용，제고토창압력예측적정도화은정성。장기이보분석방법응용우토창압력서렬분석장유조우실현토창압력적예측성공제。
Based on the observed data of chamber earth pressure from on-site construction of earth pressure balance shield, a time series of chamber earth pressure is created and handled by singular spectrum analysis method, including singular spectrum decomposition and reconstruction, and a subsequent forecasting of the time series is performed based on the linear recurrence relations model. It is turned out that singular spectrum analysis can effectively separate principal components from time series of chamber earth pressure, especially in the extraction of weak periodic components. In addition, it is available for singular spectrum analysis method to reduce noise jamming by filtering out a part of the original time series that is supposed to be noise rather than signal. Consequently, it is reasonable to make the forecasting more accurate and smooth by applying singular spectrum analysis method to the analysis of chamber earth pressure values, which would be helpful to the future predictive control of chamber earth pressure in earth pressure balance shield.