摘要
盾构隧道施工中,开挖面稳定是保证掘进顺利进行的关键,本文利用能够考虑大变形破坏的拉格朗日有限差分计算程序,对砂土地层盾构施工中的开挖面稳定问题进行了数值模拟,并与前人离心试验研究结果进行了比较分析,证明了数值模拟在研究盾构隧道开挖面稳定方面的可行性及其具有的优势,为盾构隧道施工中开挖面稳定问题研究提供建议。
The face stability is a key operation during shield tunnel excavating, the study of stability of tunnel face takes a major role in the design of such kind of underground structures and many researches have carried out in recent years. Comparing with results from analytical, centrifugal-model test could give much more reasonable results, thus it is used widely. In this paper, a three dimension fast lagrangian differential finite element method which can reflect the large strain of material is employed to study the face stability of shield tunnel in cohesionless soil. The comparison of result from numerical computer with that from centrifuge test shows that numerical simulating method can be used to study face stability.
出处
《矿山压力与顶板管理》
北大核心
2005年第1期27-30,共4页
Ground Pressure and Strata Control
