爆破动载作用下中厚水平层状岩小净距重叠隧道合理开挖时序研究
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- 英文论文题名：Study on the Reasonable Excavation Sequence of the Overlapping Tunnels with Small Spacing in the Medium and Thick Layered Rock under the Action of Blasting Dynamic Load
- 论文作者：王明胜 ; 刘大刚
- 英文论文作者：WANG Mingsheng ; LIU Dagang ; China Railway Tunnel Co. ; LTD ; School of Civil Engineering ; Southwest Jiaotong University ; Key Laboratory of Transportation Tunnel Engineering ; Ministry of Education ; Southwest Jiaotong University
- 年：2016
- 作者机构：中铁隧道股份有限公司;西南交通大学土木工程学院;西南交通大学交通隧道工程教育部重点实验室;
- 论文关键词：围岩破坏模式 ; 爆破动载 ; 中厚水平层状岩 ; 小净距重叠隧 ; 开挖时序
- 英文论文关键词：Failure mode of surrounding rock ; Blasting dynamic load ; Medium and thick layered rock ; Small Clear Distance Overlapped tunnel ; Excavation sequence
- 会议召开时间：2016-10-24
- 会议录名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会论文集
- 语种：中文
- 分类号：U455
- 学会代码：OGTY
- 会议名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会
- 会议地点：中国四川成都
- 主办单位：中国土木工程学会隧道及地下工程分会
- 学会名称：中国土木工程学会
- 页数：5
- 文件大小：2071k
- 原文格式：O
- 会议级别：全国
摘要
小净距重叠隧道合理开挖时序对确保施工安全性具有十分重要意义。本文结合施工支护具有滞后性的特点,重点从围岩破坏模式角度出发,研究了爆破动载作用下中厚水平层状岩小净距重叠隧道合理开挖时序问题,通过对围岩岩块脱落、岩层面开裂、岩层面滑移等特征比较分析,给出了先下后上开挖时序较优的研究结论。成果对类似工程具有一定程度的参考和借鉴意义。
The reasonable excavation sequence of overlapping tunnels with small spacing is of great significance to ensure the safety of the construction.In this paper,combined with the construction team and support with hysteresis characteristics,focus on the failure mode of surrounding rock angle of the blasting dynamic load under the action of thick layered rock small spacing overlapped tunnel reasonable excavation sequence,through the comparison and analysis of the characteristics of rock block falling off,cracking of the rock surface,rock level slip,gives the first after excavation is sequential,and the conclusion of the study.The results have a certain degree of reference and reference for similar projects.
The reasonable excavation sequence of overlapping tunnels with small spacing is of great significance to ensure the safety of the construction.In this paper,combined with the construction team and support with hysteresis characteristics,focus on the failure mode of surrounding rock angle of the blasting dynamic load under the action of thick layered rock small spacing overlapped tunnel reasonable excavation sequence,through the comparison and analysis of the characteristics of rock block falling off,cracking of the rock surface,rock level slip,gives the first after excavation is sequential,and the conclusion of the study.The results have a certain degree of reference and reference for similar projects.
引文
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[3]巫德斌.层状岩体边坡工程力学参数研究[D]南京:河海大学博士论文,2004.WU Debin.Study on mechanical parameter of bedded rock mass slope engineering[D].Nanjing:Hohai University,2005.
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[6]耿大新,杨林德,层状岩体的力学特性及数值模拟分析[J].地下空间,2003,12,23(4):80-383.GENG Daxin,YANG Linde.Mechanical characteristics of layered rockmass and numerical modeling[J].Underground Space,2003,23(4):380-383.