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[1]张寅,尹立冬,张季平,等.动力扰动下高应力巷道钻孔消能机制的数值研究*[J].中国安全生产科学技术,2023,19(9):61-68.[doi:10.11731/j.issn.1673-193x.2023.09.009]
　ZHANG Yin,YIN Lidong,ZHANG Jiping,et al.Numerical study on energy dissipation mechanism of high stress tunnel borehole under dynamic disturbance[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(9):61-68.[doi:10.11731/j.issn.1673-193x.2023.09.009]
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动力扰动下高应力巷道钻孔消能机制的数值研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
19
期数:
2023年9期
页码:
61-68
栏目:
职业安全卫生管理与技术
出版日期:
2023-09-30

文章信息/Info

Title:
Numerical study on energy dissipation mechanism of high stress tunnel borehole under dynamic disturbance
文章编号:
1673-193X(2023)-09-0061-08
作者:
张寅; 尹立冬; 张季平; 李哲; 杨晨晨; 李家俊
（辽宁工程技术大学 力学与工程学院，辽宁 阜新 123000）
Author(s):
ZHANG Yin;  YIN Lidong;  ZHANG Jiping;  LI Zhe;  YANG Chenchen;  LI Jiajun
(School of Mechanics and Engineering,Liaoning Technical University,Fuxin Liaoning 123000,China)
关键词:
深部巷道; 动力扰动; 钻孔卸压; 数值模拟
Keywords:
deep roadway;  dynamic disturbance;  borehole pressure relief;  numerical simulation
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2023.09.009
文献标志码:
A
摘要:
为了研究动力扰动下深部巷道围岩大直径钻孔的卸压机制，以彬长矿区某矿井冲击地压事故为背景，采用颗粒流软件建立动静载耦合作用下巷道围岩钻孔模型，从细观角度分析钻孔参数对巷道围岩消波耗能的影响规律。研究结果表明：在高应力和动力扰动的耦合作用下，右帮围岩位移峰值随着孔深及钻孔角度的增加呈下降趋势；裂纹始于钻孔端部并向四周扩展，与巷道顶部和左帮钻孔端部裂纹贯通形成应力波衰减区；随着孔深、钻孔角度的增大，总裂纹数量增加，剪切裂纹数量在总裂纹数量中占比相对稳定；钻孔角度增加时，右帮钻孔非迎波侧围岩的力链断裂程度及范围增加，迎波侧力链断裂范围降低；孔深增加时，力链场的分层区及承载区向深部转移。研究结果可为深部巷道卸压及提高围岩稳定性提供参考。
Abstract:
In order to investigate the pressure relief mechanism of large-diameter borehole in deep roadway surrounding rock under dynamic disturbance,taking the rock burst accident of a mine in Binchang mining area as the background,a borehole model of roadway surrounding rock under the coupling effect of dynamic and static load was established by using the particle flow software,and the influence of borehole parameters on wave dissipation and energy dissipation of roadway surrounding rock was analyzed from the microscopic point of view.The results show that under the coupling effect of high stress and dynamic disturbance,the peak displacement of surrounding rock on the right side decreases with the increase of borehole depth and borehole angle.The crack first appears at the end of borehole and spreads around,connecting with the cracks at the top of roadway and the left side of borehole to form a stress wave attenuation zone.The total number of cracks increases with the increase of borehole depth and borehole angle,and the proportion of shear cracks in the total number of cracks is relatively stable.When the borehole angle increases,the degree and range of force chain fracture in the surrounding rock on the non-wave facing side of the right side borehole increase,while the range of force chain fracture on the wave facing side decreases.The increase in borehole depth causes the layering and bearing areas of the force chain field to shift towards the deeper part.The research results can provide a reference for decompression of deep roadway and improvement of surrounding rock stability.

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备注/Memo

备注/Memo:
收稿日期： 2023-03-11
* 基金项目： 国家自然科学基金项目(52174116)
作者简介： 张寅，博士，教授，主要研究方向为矿山动力灾害防治。
通信作者： 尹立冬，硕士研究生，主要研究方向为矿山动力灾害防治。
更新日期/Last Update: 2023-10-12