软弱围岩隧道三台阶预留核心土带仰拱一次开挖工法定额测定研究  

Study on Quota Determination of One-time Excavation Method of Three-bench Reserved Core Soil Belt Inverted Arch in Weak Surrounding Rock Tunnel

作　　者：李准 LI Zhun(China Railway Eryuan Engineering Group Co.LTD,Chengdu 610031,China)

机构地区：[1]中铁二院工程集团有限公司,成都610031

出　　处：《铁路工程技术与经济》2024年第2期46-51,共6页Railway Engineering Technology and Economy

摘　　要：在软弱围岩隧道施工过程中,合理确定隧道开挖施工技术及投资是铁路建设者需要关注的重点问题之一。本文选取玉磨铁路立新隧道和月牙田隧道相关工点进行现场调研和数据统计,采用写实统计法和现场测定法,分析工法方案和要求,收集测定现场工料机组成及费用情况,并与正常施工条件下的数据进行对比分析,提出三台阶预留核心土带仰拱一次开挖工法定额。为铁路相关部门下一阶段造价标准修订补充、完善隧道工程的预算定额体系、促进我国铁路投资控制良性发展提供了技术支撑。In the construction process of weak surrounding rock tunnel,reasonable determination of tunnel excavation construction technology and investment is one of the key issues that railway builders need to pay attention to.In this paper,the relevant construction sites of Lixin Tunnel and Yueyatian Tunnel of Yumo Railway are selected for on-site investigation and data statistics.The realistic statistical method and on-site measurement method are used to analyze the scheme and requirements of the construction method,collect and measure the composition and cost of the on-site materials and machines,and compare and analyze the data under normal construction conditions.The three-step reserved core soil zone inverted arch excavation method quota is proposed.It provides technical support for the revision and supplement of the next stage cost standards of railway related departments,the improvement of the budget quota system of tunnel engineering,and the promotion of the healthy development of China's railway investment control.

关 键 词：铁路工程 软弱围岩隧道 三台阶预留核心土带仰拱一次开挖 施工组织模型 定额测定 

分 类 号：TU723.3[建筑科学—建筑技术科学]