钻爆法施工铁路隧道允许超挖值研究  

Research on the allowable overbreak value of railway tunnel construction using drilling and blasting method

作　　者：李一兵 曾红[1] 马跃龙 周中 LI Yibing;ZENG Hong;MA Yuelong;ZHOU Zhong(China Railway no.5 Engineering Group Co.,LTD.,Changsha 410000,China;China Railway Group Limited,Beijing 100000,China)

机构地区：[1]中铁五局集团有限公司,长沙410000 [2]中国中铁股份有限公司,北京100000

出　　处：《铁路工程技术与经济》2023年第4期18-23,共6页Railway Engineering Technology and Economy

基　　金：中国中铁股份有限公司科技研究开发计划重点课题(2022-重点-41)。

摘　　要：长期以来,钻爆法施工铁路隧道超欠挖是铁路建设各方重点关注的问题,合理的超欠挖允许值对铁路隧道工程造价有着重大影响。本文通过采集正常条件下钻爆法施工铁路隧道超欠挖数据,运用误差极限值法进行分析研究,揭示了目前施工技术与装备条件下客观的超欠挖水平,提出超挖允许值建议,为科学确定类似铁路工程隧道超欠挖和工程造价提供借鉴。For a long time,over-excavation and under-excavation in railway tunnel construction using drilling and blasting methods have been a key concern of all railway constructors.A reasonable allowance for over-excavation and under-excavation is of great influences on the cost of railway tunnels.In this article,data of over-excavation and under-excavation in railway tunnel construction using drilling and blasting methods are collected and analyzed using the error limit method,which reveals the actual over-excavation and under-excavation levels under current conditions related to construction technique and equipment.Over-excavation allowances are put forward to provide reference to scientifically conduct similar over-excavation and under-excavation and cost engineering in tunnel works.

关 键 词：钻爆法 铁路隧道 超挖允许值 

分 类 号：U455.41[建筑科学—桥梁与隧道工程]