Study on structural stability of deep buried highway tunnel with underlying coal bed exploiting

LI Xiao-hong; JIN Xiao-guang; WANG Hong-tu; JIANG De-yi

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Study on structural stability of deep buried highway tunnel with underlying coal bed exploiting

更新时间：2026-06-25

- Study on structural stability of deep buried highway tunnel with underlying coal bed exploiting
- Vol. 26, Issue 9, (2005)
- 作者机构：
  
  重庆大学西南资源开发及环境灾害控制工程教育部重点实验室，重庆 400030，2. 重庆大学土木工程学院,重庆,400030
- 作者简介：
- 基金信息：
- DOI：
  CLC： U451
- Online First：30 December 2013，
  
  Published：2005
- 稿件说明：
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LI Xiao-hong, JIN Xiao-guang, WANG Hong-tu, et al. Study on structural stability of deep buried highway tunnel with underlying coal bed exploiting[J]. 2005, 26(9).
DOI：

LI Xiao-hong, JIN Xiao-guang, WANG Hong-tu, et al. Study on structural stability of deep buried highway tunnel with underlying coal bed exploiting[J]. 2005, 26(9). DOI：

摘要

通过3D有限元数值模拟，在分析某深埋隧道煤系地层隧道开挖、初期支护和二次支护动态施工过程的基础上，重点分析了下卧煤层(倾角 =35°，厚度h=2.8 m)按全陷落法分段开采后隧道支护结构的位移、应力特征，得到了下卧煤层经济安全的禁采深度。为复杂地质条件下煤系地层隧道建设和合理开采矿产资源提供了科学依据。

Abstract

Dynamic construction process which consists of excavation

primary lining and secondary lining of deep buried tunnel (depth above the crown of tunnel about 490 m) was analysed in coal measures strata by 3D FEM numerical simulation. Characteristics of the tunnel support structural displacement and stress changes were analysed emphatically when underlying coal bed (dip angle =30°

thickness h=2.8 m) was exploited according to sub-level and full collapse method. Economic and safe prohibiting exploited depth of underlying coal bed is presented. So that a scientific basis for tunnel construction of coal measures strata and reasonable exploiting mineral resources in complex geological conditions is offered.

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