轨道交通综合开发的研究框架--首届轨道交通综合开发国际研讨会总结与回顾

[交通会议论文数据库] 卢源

关于全国中心城市汽车维修行业协会工作研讨会活动的思考

[交通会议论文数据库] 薄宏文

摘要:全国中心城市汽车维修行业协会工作研讨会(以下简称中心城市研讨会)至今已成功举办四届.这四届研讨会活动,对于交流汽车维修行业管理经验,加强行管部门与协会的联系,以及促进行业协会发展,都起到了重要作用.本文试图通过对活动开展情况和行业发展形势的分析

地下工程施工风险分析与防控对策

[交通会议论文数据库] 吕波 郭英杰 吴守林

摘要:本文着重论述了地下工程过程中的风险识别、评估与控制技术,以期减小风险事故的发生,避免盲目施工.

加强政社合作推进公共安全治理--2014年应急管理国际研讨会暨首届中国应急管理学会理论研讨会上的主旨演讲

[交通会议论文数据库] 洪毅

珠江新城地下空间开发对下方盾构隧道结构影响的分析评估

[交通会议论文数据库] 刘庭金

摘要:本文以广州珠江新城地下空间开发项目为工程背景,应用三维数值模拟分析手段,针对诱发下方集运系统盾构隧道变形的三个主要影响因素进行了三维数值模拟,分析了该地下空间开发对下方盾构隧道结构的影响,并据此评估了盾构隧道的结构安全性.结合地下空间开发项目工程特点,提出了相应的盾构隧道保护措施和工程建议.

The Calculation of Target Face Pressures for TBMs in Soft and Mixed Ground Conditions

[交通会议论文数据库] J.N Shirlaw Zhen Yan Chun Xiao Xiao

摘要:As part of Contract 855 of the Circle Line in Singapore,two slurry shield TBMs had to be driven from One North to Farrer Road Station,passing through Buona Vista and Holland Village Stations.The tunnels passed directly beneath a number of buildings.The ground consisted of a constantly varying face of mixed soil and rock grades of weathered Jurong Formation(sedimentary rock)and Bukit Timah Granite.The granite over part of the drives had been metamorphosed into massive gneiss.The boundary between the rock and soil weathering grades in the Granite and Gneiss varied,but could be abrupt.The completely weathered(grade Ⅴ)granite or gneiss at the boundary was granular and permeable in nature,while the overlying grade Ⅵ had a low permeability and was cohesive.The tunnelling conditions therefore varied widely.The basis of the face pressure calculations is presented.With the high groundwater levels characteristic of Singapore,there was a very small margin between the minimum pressure required to maintain face stability and the maximum pressure required to control the risk of slurry escape to the surface.

沈阳地铁2号线EPB盾构始发所遇问题及处理

[交通会议论文数据库] 晏立忠

摘要:本文介绍了通过对沈阳地铁2号线奥—会区间土压平衡盾构机始发所遇问题及处理,分析了盾构机被困原因,并提出了有效的处理和预防措施.

Italian Example of Excavation of a tunnel in Asbestos-Bearing Rock Mass and Local Repository for Asbeston Contaminated Muck

[交通会议论文数据库] Alessio C. Kalamaras G. Pelizza S. Peila . Testa C. Carlucci P.L.

摘要:Traces of asbestos-bearing rocks were encountered just before the completion of the excavation of the Cesana tunnel.The type of mineralization is that of amphibolitetremolite.The paper provides an insight into the tunneling technologies defined for reducing the fiber dispersion during the excavation of the last 105m of tunnel,the design of the 300m-long,21m-wide underground cavern for storing the asbestos contaminated muck,as well as the measures defined for reducing the risk of contamination for the working crews.

ICOMOS学术研讨会举行长江大桥申遗提上议程

[交通会议论文数据库] 别鸣

Time-dependent Settlement Varies in Soil around a Slurry Shield

[交通会议论文数据库] Song Zhou Hongjin Jiang

摘要:A large number of real-time data were acquired by high-precision electric-levelmeters which were laid inside M8 Line of Shanghai Metro,when the slurry-shield passed beneath the M8 Line which was situated in an impermeable layer for the Xizang road tunnel project.The settlement's fluctuation which was dependent on the cycle of boring and standstill of shield machine was clearly observed,thus the rule of pore pressures increasing during boring and dissipating during standstill was proved in practice.The article sums up the excavating parameters when the shield crossed the M8 line.Furthermore,seepage and structural coupling numerical simulation method was also applied.