【作者】 刘环宇； 李晓； 王思敬； 曾钱帮；

【Author】 LIU Huanyu;LI Xiao;WANG Sijing;ZENG Qianbang Hohai University, Nanjing 210098 Institute of Geology & Geophysics, Chinese Academy of Sciences, Beijing 100029

【机构】 河海大学； 中国科学院地质与地球物理研究所；

【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。更多还原

【Abstract】 When the fracturing of shaft lining happens, three simultaneous changes are involved among the bottomaquifer, the bed rock and the shaft lining, which are the seepage of groundwater in bottom aquifer from the bedrockto the shaft, the consolidation settlement resulted from the lost of groundwater in bottom aquifer and the develop-ment of additional force in the shaft lining, and the deformation of shaft lining subjected to the additional force. Thefracturing process of shaft lining is numerically simulated by the Lagrangian Element Method, and the interface ele-ment is adopted to the coupling of the soil and the shaft lining. The result reveals the changing laws of different fac-tors in the process of shaft-lining fracturing, and would play an impotant role in the fracturing mechanism analysisand prevention and harness for shaft lining.更多还原