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[1]余涛,朱宁波,姚志刚,等.深埋水平岩层隧道开挖稳定性分析及控制*[J].中国安全生产科学技术,2023,19(4):93-99.[doi:10.11731/j.issn.1673-193x.2023.04.013]
　YU Tao,ZHU Ningbo,YAO Zhigang,et al.Stability analysis and control of tunnel excavation in deep buried horizontal stratum[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(4):93-99.[doi:10.11731/j.issn.1673-193x.2023.04.013]
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深埋水平岩层隧道开挖稳定性分析及控制*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
19
期数:
2023年4期
页码:
93-99
栏目:
职业安全卫生管理与技术
出版日期:
2023-04-30

文章信息/Info

Title:
Stability analysis and control of tunnel excavation in deep buried horizontal stratum
文章编号:
1673-193X(2023)-04-0093-07
作者:
余涛; 朱宁波; 姚志刚; 张睿; 张乾; 方勇
（1.西南交通大学 土木工程学院，四川 成都 610031；
2.天津大学 土木工程学院，天津 300352；
3.四川川交路桥有限责任公司，四川 广汉 618300；
4.中铁第四勘察设计院集团有限公司，湖北 武汉 430063)
Author(s):
YU Tao;  ZHU Ningbo;  YAO Zhigang;  ZHANG Rui;  ZHANG Qian;  FANG Yong
(1.School of Civil Engineering,Southwest Jiaotong University,Chengdu Sichuan 610031,China；
2.School of Civil Engineering,Tianjin University,Tianjin 300352,China；
3.Sichuan Chuanjiao Cross Road & Bridge Co.,Ltd.,Guanghan Sichuan 618300,China；
4.China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan Hubei 430063,China)
关键词:
深埋隧道; 水平岩层; 掌子面失稳; 离散元分析; 控制措施
Keywords:
deep buried tunnel;  horizontal stratum;  instability of tunnel face;  discrete element analysis;  control measure
分类号:
X947
DOI:
10.11731/j.issn.1673-193x.2023.04.013
文献标志码:
A
摘要:
针对深埋高地应力水平岩层掌子面开挖稳定性及支护结构失效问题，以大峡谷隧道为工程背景，通过现场测试、室内试验、数值模拟等方法，探究深埋高地应力水平岩层失稳机理及控制措施。研究结果表明：坚硬岩体被节理面切割后，在高地应力作用下容易发生挤压破碎，破碎岩体遇水发生软化，导致掌子面发生大范围塌方，初支和超前支护失效；隧道开挖后岩层发生不均匀沉降，浅部岩层最先发生弯折破坏，层内块体错动滑移，继而向上方岩层发展，并伴随层间分离和层内裂隙发育，最终形成宏观破裂面；提出的台阶法、2 m开挖进尺、砼喷层、双层小导管、提高初支强度的整体优化控制措施，可有效提高现场支护效果。
Abstract:
Aiming at the problems of excavation stability of tunnel face and the failure of supporting structure in deep buried horizontal stratum with high ground stress,based on the engineering background of Daxiagu tunnel,the instability mechanism and control measures of the deep buried horizontal stratum with high ground stress were studied through the field test,laboratory test and numerical simulation methods.The results showed that the hard rock mass cut by the joint plane was prone to occur crushing and breaking under high ground stress,the broken rock mass softened by water led to the large-scale collapse of tunnel face and the failure of primary support and advanced support.After the tunnel excavation,the uneven settlement of stratum occurred,then the shallow stratum suffered tensile and bending failure in the first.The block mass in stratum slipped with dislocation,then developed to the upper stratum,accompanied by interlayer separating and fracture development in stratum,and finally formed a macroscopic fracture plane.The proposed integrated optimization control measures of step method,2 m excavation footage,concrete spray layer,double-layered small pipes and improving primary support strength obtained good on-site support effect.

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相似文献/References:

[1]齐彦萌,张芳源,王巍浩.基于HoekBrown强度准则深埋隧道掌子面稳定性分析*[J].中国安全生产科学技术,2020,16(6):134.[doi:10.11731/j.issn.1673-193x.2020.06.022]
　QI Yanmeng,ZHANG Fangyuan,WANG Weihao.Stability analysis of deepburied tunnel face based on HoekBrown strength criterion[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(4):134.[doi:10.11731/j.issn.1673-193x.2020.06.022]

备注/Memo

备注/Memo:
收稿日期： 2022-09-07
* 基金项目： 四川省杰出青年基金项目(2020JDJQ0032)；国家自然科学基金项目(52078428)
作者简介： 余涛，博士研究生，主要研究方向为隧道围岩稳定性。
通信作者： 方勇，博士，教授，主要研究方向为特殊及复杂山岭隧道施工力学。
更新日期/Last Update: 2023-05-11