[1]周小龙,李 澳,冯雪冬.岩溶地区隧道围岩临界防突厚度数值分析[J].武汉工程大学学报,2024,46(04):452-459.[doi:10.19843/j.cnki.CN42-1779/TQ.202310006]
　ZHOU Xiaolong,LI Ao,FENG Xuedong.Numerical analysis of thickness of critical outburst prevention layer of peripheral rock in karst tunnel[J].Journal of Wuhan Institute of Technology,2024,46(04):452-459.[doi:10.19843/j.cnki.CN42-1779/TQ.202310006]

点击复制

岩溶地区隧道围岩临界防突厚度数值分析(/HTML)

分享到：

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:

46

期数:

2024年04期

页码:

452-459

栏目:

资源与土木工程

出版日期:

2024-08-28

文章信息/Info

Title:

Numerical analysis of thickness of critical outburst prevention layer

of peripheral rock in karst tunnel

文章编号:

1674 - 2869（2024）04 - 0452 - 08

作者:

周小龙; 李 澳; 冯雪冬

武汉工程大学土木工程与建筑学院，湖北 武汉 430074

Author(s):

ZHOU Xiaolong;  LI Ao;  FENG Xuedong

School of Civil Engineering and Architecture， Wuhan Institute of Technology， Wuhan 430074，China

关键词:

岩溶隧道; 隧道突水; 临界防突层厚度; 数值模拟

Keywords:

karst tunnel; tunnel water inrush; critical outburst prevention layer thickness; numerical simulation

分类号:

TD823

DOI:

10.19843/j.cnki.CN42-1779/TQ.202310006

文献标志码:

A

摘要:

依托某隧道工程，基于岩溶地区地质特征建立了岩溶隧道围岩结构概化数值模型，分析充水溶洞位于隧道不同位置、各工况下岩溶隧道防突层破坏过程及规律，提出了不同位置下围岩临界防突层厚度。研究结果表明：岩溶的发育规模、岩层厚度、溶洞位置和岩溶水压均为突水灾害发生的主要影响因素；溶洞位于拱腰时，塑性区最大变形发生在岩溶隧道防突岩层中心，从位移、应力和孔隙水压变化规律可知，溶洞位于隧道拱腰时，对隧道围岩稳定性影响较大；由数值模拟结果可知，各工况下未发生塑性贯通区的位置及临界防突层厚度。研究成果可为岩溶区隧道建设及工程施工中的突涌突水灾害预测提供科学依据。

Abstract:

Using a tunnel project， based on the geological characteristics of karst areas， we established a generalized numerical model of the surrounding rock structure of the karst tunnel. Analyzing the failure process and law of the outburst prevention layer of the karst tunnel under different positions and working conditions of the water-filled karst cave， we proposed the thickness of the critical outburst prevention layer of peripheral rock at different positions. The results show that the karst development scale， rock thickness， karst cave location， and karst water pressure are the main factors resulting in water inrush disasters. When the karst cave is located at the arch waist， the maximum deformation of the plastic zone occurs in the center of the outburst prevention rock layer of the karst tunnel. From the variation law of displacement， stress， and pore water pressure， it can be seen that the karst cave has a greater influence on the stability of the surrounding rock of the tunnel when it is located at the arch waist of the tunnel. The numerical simulation results show the locations of the plastic penetration zones and thickness of the critical outburst prevention layers under various working conditions. The research results above provide a scientific basis for prediction of water inrush disasters in tunnels and other engineering construction in karst areas.

备注/Memo

备注/Memo:

收稿日期：2023-10-14

基金项目：武汉工程大学第十四届研究生教育创新基金（CX2022205）

作者简介：李 澳，硕士研究生。Email：18162744094@163.com

*通信作者：周小龙，博士，副教授。Email：zhouxiaolong@wit.edu.cn

引文格式：周小龙，李澳，冯雪冬. 岩溶地区隧道围岩临界防突厚度数值分析［J］. 武汉工程大学学报，2024，46（4）：452-459.

常用功能