[1]郦亚军,刘科.高地应力近水平状页岩地层隧底隆起变形分析及设计优化[J].高速铁路技术,2021,12(04):94-102.[doi:10.12098/j.issn.1674-8247.2021.04.019]
　LI Yajun,LIU Ke.Analysis and Design Optimization for Floor Bulging of Tunnels in Near-horizontal Shale Formations with High in-situ Stress[J].HIGH SPEED RAILWAY TECHNOLOGY,2021,12(04):94-102.[doi:10.12098/j.issn.1674-8247.2021.04.019]
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高地应力近水平状页岩地层隧底隆起变形分析及设计优化()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
12卷
期数:
2021年04期
页码:
94-102
栏目:
出版日期:
2021-08-28

文章信息/Info

Title:
Analysis and Design Optimization for Floor Bulging of Tunnels in Near-horizontal Shale Formations with High in-situ Stress
文章编号:
1674—8247(2021)04—0094-09
作者:
郦亚军;  刘科
中铁二院成都勘察设计研究院有限责任公司, 成都 610031
Author(s):
LI Yajun;  LIU Ke
CREEC(Chengdu) Survey, Design and Research Co., Ltd., Chengdu 610031, China
关键词:
高地应力|隧道|平导|隆起变形|设计优化|监测
Keywords:
high in-situ stress|tunnel|parallel heading|bulging|design optimization|monitoring
分类号:
U457+.2
DOI:
10.12098/j.issn.1674-8247.2021.04.019
文献标志码:
A
摘要:
某高速铁路隧道及其平导位于近水平状页岩地层，且靠近新华区域大断裂，平导在施工期间发生多阶段底板上鼓变形、开裂至破坏，在开展地应力测试后结果表明，该区域围岩存在高初始地应力。针对平导底板破坏区域对应的正洞隧道，考虑洞室群效应，采用数值模拟方法从衬砌内轮廓、施工工法、支护结构等进行系统优化，并通过支护变形及应力监测显示，隧道底部隆起变形趋于稳定，结构安全系数满足规范要求。
Abstract:
A high-speed railway tunnel and its parallel headings are located in the near-horizontal shale formation, and close to the major fault in Xinhua Area, resulting to multi-stage floor bulging, cracking and damage to the parallel headings during excavation. The results of in-situ stress test show that there is high initial in-situ stress in the rocks of this area. Taking into account the cavern complex effect, a numerical simulation method is used to optimize the inner contour of lining, construction method, and supporting structure for the main tunnel corresponding to the damaged floor of the parallel headings. The monitoring of supporting deformation and stress shows that the floor bulging of tunnels tends to be stable, and the structural safety factor meets the specification requirements.

备注/Memo

备注/Memo:
作者简介:郦亚军(1978-),男,高级工程师。引文格式:郦亚军, 刘科. 高地应力近水平状页岩地层隧底隆起变形分析及设计优化[J]. 高速铁路技术,2021,12(4):94-102.LI Yajun, LIU Ke. Analysis and Design Optimization for Floor Bulging of Tunnels in Near-horizontal Shale Formations with High in-situ Stress[J]. High Speed Railway Technology, 2021, 12(4):94-102.
更新日期/Last Update: 2021-08-28