摘要
根据沪蓉西高速公路龙潭隧道中预埋式多点位移计的现场监测工作实践,提出了多点位移计确定围岩松动圈的现场量测及判别方法,并对开挖后的隧道围岩变形进行了有限元数值模拟。实践证明,根据围岩内变形量与时间的变化关系并结合累积变形量随径向位移的变化规律及测点径向埋设位置,是确定围岩松动圈范围的有效方法。
Based on the practice of the embedded displacement meter in Longtan tunnel, which is located on the HuRongxi express highway, a method of defining the loosen range of surrounding rock with the displacement meter is presented, and the distortion of the surrounding rock with FEM is simulated. Practice proves that the radial displacement which is based on the relationship between distortion value and time of the surrounding rock, combining with rule of accumulative distortion value changing with radial distortion is a feasible and reasonable method to estimate the loosen range of surrounding rock.
出处
《矿冶工程》
CAS
CSCD
北大核心
2006年第1期1-4,共4页
Mining and Metallurgical Engineering
基金
湖南省自然科学基金(03JJY3078
04JJ40032)
湖南省教育厅资助重点科研项目(03A006)
长沙理工大学基金项目(30007)资助课题
关键词
围岩松动圈
量测方法
多点位移计
径向位移
loose range of surrounding rock
measuring method
displacement meter
radial displacement
