刘环宇, 李晓, 王思敬, 曾钱帮. 2004: 厚冲积层立井井筒非采动破裂过程的三维耦合数值模拟. 工程地质学报, 12(S1): 529-532.
    引用本文: 刘环宇, 李晓, 王思敬, 曾钱帮. 2004: 厚冲积层立井井筒非采动破裂过程的三维耦合数值模拟. 工程地质学报, 12(S1): 529-532.
    LIU Huanyu, LI Xiao, WANG Sijing, ZENG Qianbang. 2004: THREE-DIMENSIONAL COUPLING, NON-MINING FRACTURING PROCESS NUMERICAL SIMULATION FOR SHAFT IN THICK ALLUVIUM. JOURNAL OF ENGINEERING GEOLOGY, 12(S1): 529-532.
    Citation: LIU Huanyu, LI Xiao, WANG Sijing, ZENG Qianbang. 2004: THREE-DIMENSIONAL COUPLING, NON-MINING FRACTURING PROCESS NUMERICAL SIMULATION FOR SHAFT IN THICK ALLUVIUM. JOURNAL OF ENGINEERING GEOLOGY, 12(S1): 529-532.

    厚冲积层立井井筒非采动破裂过程的三维耦合数值模拟

    THREE-DIMENSIONAL COUPLING, NON-MINING FRACTURING PROCESS NUMERICAL SIMULATION FOR SHAFT IN THICK ALLUVIUM

    • 摘要: 立井井筒破裂时,在底含、基岩、井筒之间包含三个同时发生的变化过程:(1)底含水由基岩向矿井中的渗流;(2)深厚表土底部含水层的失水固结沉降与井壁附加力的产生;(3)立井井筒在附加力的作用下发生变形。本文采用拉格朗日元法对立井井筒的破裂过程进行了数值计算,且设置了界面单元来计算土与井筒之间的相互耦合作用,其计算结果揭示了立井井筒破裂过程中各个影响因素之间的变化规律,对于立井井筒破裂的机理分析及预防治理具有重要意义。

       

      Abstract: When the fracturing of shaft lining happens, three simultaneous changes are involved among the bottom aquifer, the bed rock and the shaft lining, which are the seepage of groundwater in bottom aquifer from the bedrock to the shaft, the consolidation settlement resulted from the lost of groundwater in bottom aquifer and the development of additional force in the shaft lining, and the deformation of shaft lining subjected to the additional force. The fracturing process of shaft lining is numerically simulated by the Lagrangian Element Method, and the interface element is adopted to the coupling of the soil and the shaft lining. The result reveals the changing laws of different factors in the process of shaft-lining fracturing, and would play an impotant role in the fracturing mechanism analysis and prevention and harness for shaft lining.

       

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