[1]王政松.水平岩层隧道底鼓整治及结构参数优化研究[J].高速铁路技术,2025,(02):87-93.[doi:10.12098/j.issn.1674-8247.2025.02.014]
　WANG Zhengsong.Study on Remediation and Structural Parameter Optimization of Tunnel Floor Heave in Horizontal Rock Strata[J].HIGH SPEED RAILWAY TECHNOLOGY,2025,(02):87-93.[doi:10.12098/j.issn.1674-8247.2025.02.014]
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水平岩层隧道底鼓整治及结构参数优化研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
期数:
2025年02期
页码:
87-93
栏目:
研究创新
出版日期:
2025-04-20

文章信息/Info

Title:
Study on Remediation and Structural Parameter Optimization of Tunnel Floor Heave in Horizontal Rock Strata
文章编号:
1674-8247(2025)02-0087-07
作者:
王政松
( 中铁二十三局集团有限公司, 成都 610072)
Author(s):
WANG Zhengsong
(China Railway 23rd Bureau Group Co., Ltd., Chengdu 610072, China)
关键词:
高地应力;  水平岩层;  隧道底鼓;  仰拱曲率;  参数优化
Keywords:
high geo-stress;  horizontal rock stratum;  tunnel floor heave;  invert curvature;  parameter optimization
分类号:
U457+.2
DOI:
10.12098/j.issn.1674-8247.2025.02.014
文献标志码:
A
摘要:
针对某铁路隧道施工期间出现的仰拱隆起开裂问题,开展了现场地应力测试,揭示了仰拱隆起段的地应力主要以垂直于隧道轴向的水平应力为主,地应力为15.24 ～ 21.69 MPa,强度应力比为4.06 ～ 4.30,为高地应力状态。结合地层结构模型,研究了高地应力水平岩层环境下隧道仰拱半径及支护结构参数对仰拱结构受力及变形的影响。综合支护结构安全性和施工便捷性,提出了仰拱隆起段整治方案,确定了相匹配的仰拱曲率及仰拱结构参数; 通过现场力学特性试验,结合后期长期监测数据,进一步验证了仰拱支护优化参数的合理性。
Abstract:
In response to the invert heave and cracking encountered during the construction ofa railway tunnel,in situ geo-stress tests were conducted, and the results revealed that the principal geo-stresses in the heave zone predominantly consist of horizontal stresses perpendicular to the tunnel axis, with magnitudes ranging from 15.24 MPa to 21.69 MPa and a strength-to-stress ratio of 4.06 to 4.30, indicative of a high geo-stress environment. Combining this with a stratum structure model, the influence of tunnel invert radius and support structure parameters on the invert's structural loading and deformation was investigated under conditions of high geo-stress horizontal rock strata. Considering both the safety of the support structure and the convenience of construction, a remediation scheme for the invert heave section was proposed, a compatible invert curvature and associated invert structural parameters were determined. The rationality of the optimized invert support parameters was further substantiated through field mechanical property tests and subsequent long-term monitoring data.

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备注/Memo

备注/Memo:
收稿日期:2023-04-24
作者简介:王政松(1973-),男,高级工程师。
更新日期/Last Update: 2025-04-20