理论与试验研究

不同位置隐含节理巷道在扰动下的岩爆试验研究

  • 曾国健 ,
  • 李克钢 ,
  • 李明亮 ,
  • 乔志强 ,
  • 甘衍垦
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  • 1.昆明理工大学 国土资源工程学院,昆明 650093;
    2.云南省中-德蓝色矿山与特殊地下空间利用重点实验室,昆明 650093;
    3.广西大学 土木建筑工程学院,南宁 530004
曾国健(1998—),男,贵州安顺人,硕士,主要从事岩石力学方面的研究。E-mail:1690369124@qq.com
李克钢(1978—),男,山西介休人,博士,教授、博士生导师,主要从事岩石力学领域的教学和科研工作。E-mail:106146135@qq.com

收稿日期: 2025-07-24

  网络出版日期: 2026-06-23

基金资助

国家自然科学基金(52364005);云南省重大科技项目(202202AG050014)

Experimental Study on Rockburst of Roadways with Hidden Joints at Different Locations under Disturbance

  • Zeng Guojian ,
  • Li Kegang ,
  • Li Mingliang ,
  • Qiao Zhiqiang ,
  • Gan Yanken
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  • 1. School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China;
    2. Yunnan Key Laboratory of Sino-German Blue Mine and Special Underground Space Utilization, Kunming 650093, P. R. China;
    3. School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, P. R. China

Received date: 2025-07-24

  Online published: 2026-06-23

摘要

为探究动静荷载下节理位置对直墙拱形巷道岩爆影响机制,选云南会泽铅锌矿灰岩,加工成含直墙拱形孔洞的立方体试件。预制节理,使其与直墙洞壁间距为5 mm、10 mm、15 mm、20 mm,设无节理试件对照。利用真三轴岩爆试验系统,开展不同节理位置的巷道岩爆模拟试验,结合视频、声发射监测及分形理论,从岩爆破坏过程、岩爆坑形态、声发射信号及碎屑特征等分析节理位置对岩爆的影响。结果表明:(1)所有试件岩爆破坏阶段相同,含节理试件岩爆坑深度随节理与直墙洞壁间距增大而减小;(2)声发射绝对能量和碎屑分形维数反映岩爆烈度,二者及岩爆烈度均随节理与巷道洞壁距离增大而减小;(3)节理距巷道洞壁越远,岩爆耗能越少,碎屑片状特征越明显。

本文引用格式

曾国健 , 李克钢 , 李明亮 , 乔志强 , 甘衍垦 . 不同位置隐含节理巷道在扰动下的岩爆试验研究[J]. 地下空间与工程学报, 2026 , 22(3) : 837 -849 . DOI: 10.20174/j.JUSE.2026.03.09

Abstract

In order to explore the influence mechanism of joint position on rockburst of straight wall arched roadway under dynamic and static loads, the limestone of Huize Lead-Zinc Mine in Yunnan Province was selected and processed into cube specimens with straight wall arched holes. The joints were prefabricated, and the spacing between the joints and the straight wall was 5 mm, 10 mm, 15 mm, and 20 mm, and the jointless specimens were set as the control. Based on the true triaxial rockburst test system, the rockburst simulation tests of roadways with different joint positions were carried out. Combined with video, acoustic emission monitoring, and fractal theory, the influence of joint position on rockbursts was analyzed from the aspects of rockburst failure process, rockburst pit morphology, acoustic emission signal, and debris characteristics. The results show that: (1) The rockburst failure stage of all specimens were same, and the depth of the rockburst pit decreases with the increase of the distance between the joint and the straight wall. (2) The absolute energy of acoustic emission and the fractal dimension of debris reflect the rockburst intensity. Both of them and the rockburst intensity decrease with the increase of the distance between the joint and the tunnel wall. (3) The farther the joint is from the tunnel wall, the lower the energy consumption of rockburst, and the more obvious the flake characteristics of debris.

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