Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Main positions: President of international exchange committee of the Chinese Society of Rock Mechanics and Engineering CSRME
Other Post: Vice President of the Chinese Society of Rock Mechanics and Engineering CSRME
Title of Paper:砂土地层盾构开挖面极限最小支护压力
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Date of Publication:2015-03-15
Journal:东北大学学报(自然科学版)
Included Journals:EI、PKU、ISTIC、CSCD、Scopus
Volume:36
Issue:3
Page Number:433-436
ISSN No.:1005-3026
Key Words:开挖面稳定性;埋深比;极限支护压力;Flac3D;极限平衡理论
Abstract:盾构施工过程中开挖面支护压力控制不当有可能导致周边管线破裂、建筑物倾斜等严重的风险事故.基于Flac3D数值模型及极限平衡模型研究了砂土地层中不同埋深比(C/D)及土层内摩擦角对开挖面失稳模式和极限最小支护压力的影响机制.通过对比分析两种方法,得出现有极限平衡模型由于无法反映开挖面失稳过程中侧压力系数随开挖面位移和埋深动态变化过程,因而与实际极限支护压力存在较大差异.该研究为砂土地层工程实践提供重要的理论依据.
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