深埋地铁车站通风井漏渣法施工过程分析  

Analysis on Slag Leakage Method Construction Process of Ventilation Shaft of Deep Metro Station

作　　者：汪令平 穆鑫浩 程刚 郭志强 张英 WANG Lingping;MU Xinhao;CHENG Gang;GUO Zhiqiang;ZHANG Ying

机构地区：[1]中铁六局集团有限公司,北京100036 [2]重庆大学土木工程学院,重庆400045

出　　处：《公路交通技术》2018年第2期91-96,共6页Technology of Highway and Transport

摘　　要：为了了解在建重庆市轨道交通10号线红土地车站通风井施工过程中围岩受力和位移变化情况,利用Midas-GTS(NX)建立超深地铁车站通风结构-风井和通风道交叉段三维有限元计算模型,分析风井漏渣法施工对风井和通风道交叉段围岩稳定性的影响。分析结果表明,漏渣竖井的开挖对交叉段隧道围岩的位移和支护结构的应力有较大影响,施工过程中应加强监测,避免拱脚和拱肩出现挤压破坏以及隧底出现拉裂破坏。To know about the stress and displacement changes of surrounding rocks during the construction process of ventilation shaft of the Hongtudi Station of Rail Traffic Line 10,Chongqing Metro,which is under construction,the Midas-GTS(NX)is used to build the three-dimensional finite element calculation model for the intersection part between ventilation structure-ventilation shaft and the ventilating duct of super deep metro station to analyze on influence of slag leakage method construction of ventilation shaft on the stability of surrounding rocks in the intersection part between ventilation shaft and ventilating duct.The results show that excavation of slag leakage vertical shaft has significant influence on displacement of tunnel surrounding rocks in the intersection part and the stress of supporting structure.During the process of construction,it is necessary to strengthen monitoring so as to avoid crushing failure of skew back and spandrel as well as tensile breakage of tunnel bottom.

关 键 词：深埋地铁车站 通风结构 通风井 漏渣法施工 数值模拟 

分 类 号：U455[建筑科学—桥梁与隧道工程]