Model test study of stability of large span tunnel under explosive plane wave

XU Jing-mao; GU Jin-cai; CHEN An-min; WANG Tao; ZHANG Xiang-yang

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Model test study of stability of large span tunnel under explosive plane wave

更新时间：2026-06-25

- Model test study of stability of large span tunnel under explosive plane wave
- Vol. 34, Issue S1, (2013)
- 作者机构：
  
  1. 中国科学技术大学近代力学系,合肥,230027
  2. 总参工程兵科研三所,河南,洛阳,471023
- 作者简介：
- 基金信息：
- DOI：
  CLC： U451
- Online First：09 June 2014，
  
  Published：2013
- 稿件说明：
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XU Jing-mao, GU Jin-cai, CHEN An-min, et al. Model test study of stability of large span tunnel under explosive plane wave[J]. 2013, 34(S1).
DOI：

XU Jing-mao, GU Jin-cai, CHEN An-min, et al. Model test study of stability of large span tunnel under explosive plane wave[J]. 2013, 34(S1). DOI：

摘要

通过抗爆模型试验，研究了爆炸平面波作用下大跨度毛洞和锚喷衬砌支护洞室的受力变形和稳定状态。介绍了模型试验原理及方法，根据试验实测数据分析了洞室围岩的受力特征、洞壁的运动变形特征、洞室的破坏形态及承载能力等。研究表明：设计工况和超载工况下，锚喷衬砌支护洞室侧墙部位垂直应力、拱顶加速度正峰值、拱顶位移峰值及残余值、洞壁环向应变峰值均明显小于毛洞；超载试验后，毛洞破坏严重，丧失了承载能力，而锚喷衬砌支护洞室破坏明显轻微，承载能力可提高约60%。

Abstract

Through the anti-explosion model tests

the deformation and steady state of large span unlined tunnel and bolting and shotcrete lining supported tunnel under explosive plane wave are studied. This paper introduces the principle and method of model test. Based on the test data

the stress characteristics of surrounding rock

deformation behavior of tunnel wall

and the fracture morphology as well as bearing capacity of tunnel are analyzed. Research shows that under the design condition and overload condition

when tunnel supported by bolting and shotcrete lining

vertical stress in side wall

acceleration peak value of tunnel vault

peak and residual value of the displacement of tunnel vault

and peak value of hoop strain on tunnel wall are less than unlined tunnel. After overload test

unlined tunnel is damaged badly and loss of bearing capacity; but bolting and shotcrete lining supported tunnel is damaged slightly; the bearing capacity can be increased by 60%.

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