摘要
结合丽(江)攀(枝花)高速公路狮子石隧道与新庄铁路隧道交叉段施工中发生既有隧道衬砌开裂掉块的工程实际,通过数值模拟与实际影响的综合分析,发现新建公路隧道对既有铁路隧道影响的主要因素是爆破震动的影响,其中既有隧道存在质量缺陷的段落影响程度较重。文章初步提出了既有隧道加固措施和新建隧道处治对策,可为类似工程提供参考。
Based on the actual construction of the Shizishi tunnel on the Lijiang to Panzhihua highway, which crosses over the Xinzhuang railway tunnel, the cracking and spalling of the lining in the railway tunnel was comprehensively analyzed through numerical simulation and observed phenomena. It was determined that the main factor of the newly-built highway tunnel＇s effects on the existing railway tunnel was blasting vibration, especially within the section with poorer quality. The reinforcement measures taken regarding the existing railway tunnel and treatment measures used for the newly-built highway tunnel are presented in this paper as a preliminary reference for similar projects.
出处
《现代隧道技术》
EI
北大核心
2013年第2期139-144,共6页
Modern Tunnelling Technology
关键词
新建公路隧道
上跨交叉
既有铁路隧道
近接施工
爆破震动
New highway tunnel
Upper-cross
Existing railway tunnel
Adjacent construction
Blasting vibration
