松潘高地应力软岩隧道变形预测  

Study on deformation characteristics of surrounding rock under different lateral pressure coefficient of high geostress soft rock tunnel

作　　者：潘卫东[1] 彭均阳 

机构地区：[1]华南理工大学土木与交通学院,广东广州510640

出　　处：《山西建筑》2017年第25期167-169,共3页Shanxi Architecture

摘　　要：以成兰高速铁路松潘隧道高地应力软岩大变形施工段为工程背景,对隧道典型断面D3K246+265的围岩拱顶下沉和水平收敛位移的实际监控量测数据进行回归分析并作曲线拟合,并据此预测围岩的最终变形量,并和断面D3K246+285的最终变形量进行对比验证。结果表明,该种变形预测方法对于赋存在复杂地质环境的高地应力软岩隧道具有较好的可行性,对调整与修正隧道支护设计参数、预留量的大小和保证隧道安全方面具有一定的指导意义。Taking the soft rock huge deformation construction of Songpan tunnel in Cheng-Lan high speed railway as the engineering background,the actual monitoring of tunnel surrounding rock arch typical section D3K246 ＋ 265 settlement and horizontal convergence displacement data measured by regression analysis and curve fitting,and predict the final deformation of surrounding rock,and comparing the results and final the deformation of the cross section D3K246 ＋ 285. The results show that the deformation prediction method for complex geological environment exist high stress soft rock tunnel has good feasibility,to support design parameters,adjustment and correction of tunnel reserved quantity and ensure the safety of the tunnel has a certain significance,the deformation regression analysis method can provide a reference for other similar projects.

关 键 词：软岩隧道 监控量测 变形预测 回归分析 

分 类 号：U456[建筑科学—桥梁与隧道工程]