[an error occurred while processing this directive] [an error occurred while processing this directive] [an error occurred while processing this directive]
[an error occurred while processing this directive]
采选技术与矿山管理

深井高应力环境下束状组合孔拉槽爆破优化研究

  • 邱泓杰 , 1 ,
  • 邱贤阳 , 1 ,
  • 张舒 1 ,
  • 陈辉 2 ,
  • 史秀志 1 ,
  • 沈文博 1 ,
  • 陶铁军 3 ,
  • 段武全 4
展开
  • 1. 中南大学资源与安全工程学院,湖南 长沙 410083
  • 2. 新疆大学地质与矿业工程学院,新疆 乌鲁木齐 830047
  • 3. 贵州大学矿业学院,贵州 贵阳 550025
  • 4. 中铁贵州工程有限公司,贵州 贵阳 551700
邱贤阳(1987-),男,江西赣州人,研究员,从事难采资源开采、深井爆破破岩和爆破振动控制等研究工作。

邱泓杰(1996-),男,云南楚雄人,硕士研究生,从事充填体稳定性和爆破振动控制等研究工作。

收稿日期: 2023-11-29

  修回日期: 2024-03-06

  网络出版日期: 2024-05-21

基金资助

国家自然科学基金项目“爆破荷载下含分层结构面充填体损伤演化与分部揭露渐变失稳机制”(52374152)

中南大学研究生自主探索类创新项目“爆破动载下胶结充填体损伤失稳规律与控制降振技术研究”(1053320221641)

Optimization of Bunch Holes Cutting Blasting in Deep Mine Under High Stress Environment

  • Hongjie QIU , 1 ,
  • Xianyang QIU , 1 ,
  • Shu ZHANG 1 ,
  • Hui CHEN 2 ,
  • Xiuzhi SHI 1 ,
  • Wenbo SHEN 1 ,
  • Tiejun TAO 3 ,
  • Wuquan DUAN 4
Expand
  • 1. School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China
  • 2. School of Geological and Mining Engineering, Xinjiang University, Urumqi 830047, Xinjiang, China
  • 3. Mining College of Guizhou University, Guiyang 550025, Guizhou, China
  • 4. China Railway Guizhou Engineering Co. , Ltd. , Guiyang 551700, Guizhou, China

Received date: 2023-11-29

  Revised date: 2024-03-06

  Online published: 2024-05-21

摘要

为探究深井高应力环境下,采场束状组合孔拉槽爆破损伤破裂规律,采用LS-DYNA数值分析软件进行研究。通过建立平面数值模型,分析了无静应力、单向静应力和双向等值静应力3种条件下束状组合孔爆破破裂损伤情况。此外,对不同静应力条件下束状组合孔的孔间距和外围辅助空孔的布置方式进行优化,并进行工程试验验证。研究结果表明:相比无静应力条件,单向静应力和双向等值静应力条件下束状组合孔爆破损伤裂纹扩展受到抑制,静应力越大,抑制作用越显著。工程实践表明,根据静应力的大小调整束状组合孔孔间距和外围辅助孔布置方式,能够获得良好的拉槽爆破破岩效果。

本文引用格式

邱泓杰 , 邱贤阳 , 张舒 , 陈辉 , 史秀志 , 沈文博 , 陶铁军 , 段武全 . 深井高应力环境下束状组合孔拉槽爆破优化研究[J]. 黄金科学技术, 2024 , 32(2) : 318 -329 . DOI: 10.11872/j.issn.1005-2518.2024.02.160

Abstract

The bunch holes,which consist of multiple dense and parallel holes and detonated simultaneously,are widely used in mines because of its high rock-breaking efficiency.With the worldwide depletion of resources in the shallow part of the earth,many mines are transitioning to the deep mining stage,and the influence of the complex high stress environment on the effect of blasting on rock breaking in the deep mining process needs to be further studied.In order to explore the law of blasting damage and fracture of bunch holes cutting blasting in deep mining under high stress stope environment,LS-DYNA finite element numerical analysis software was used to study.Combined with the mine blasting engineering practice,the planar numerical model with the same size as the actual working conditions was established,which contained four charge holes and one auxiliary empty hole.The rupture damage process of the bunch holes under no static stress was analyzed.On this basis,in the case of one-way static stress and two-way equivalent static stress,when the static stress is 20 MPa and 40 MPa respectively,the blasting fracture damage of the bunch holes cutting blasting was analyzed,and the number of failures units of the numerical model under different static stress states was compared. In addition,the hole spacing and the arrangement of peripheral auxiliary holes were optimized under different static stress conditions,and engineering experiments were carried out to verify the reliability of the optimization results by counting the chunk rate of different schemes.The results show that compared with the no static stress condition,the expansion of the bunch holes blasting damage cracks will be suppressed under the unidirectional static stress and bidirectional equivalent static stress conditions.With the increase of static stress,the number of model failure units decreases gradually,and the inhibition of crack extension is more significant.When the static stress reaches 40 MPa,no penetration crack can be formed between the four bunch holes and the center empty hole.In particular,in the bidirectional equivalent static stress state,the inter-hole crack penetration mode of the bunch holes changes from a square penetration to a circular penetration.Practice shows that according to the size of the static stress to adjust the bunch holes spacing and peripheral auxiliary holes arranged way can reduce the rate of large pieces of slot blasting,so as to obtain a good slot blasting rock-breaking effect.

[an error occurred while processing this directive]

脚注

http://www.goldsci.ac.cn/article/2024/1005-2518/1005-2518-2024-32-2-318.shtml

Chen He2022.Study on Blasting Mechanism and Enhanced Rock Fragmentation Model of Bunch-hole[D].Beijing:University of Science and Technology Beijing.

Chen He2023.Optimal holes spacing of bunch-holes[J].Nonferrous Metals(Mining Section)75(4):78-81,96.

Chen He Wang Xuguang2023.Study on blasting effect and strengthening fragment mechanism of bunch-holes[J].Nonferrous Metals13(4):120-126.

Cui Xinnan Wang Xuguang Chen He,et al,2019.Experimental research on bunch-hole double sublevels in-hole delay blasting[J].Nonferrous Metals(Mining Section)71(2):82-85.

Jin Peng Liu Kewei Li Xudong,et al,2021.Numerical simulation study of crack propagation in deep rock mass under water-coupling blasting[J].Gold Science and Technology29(1):108-119.

Lei Zhen Zhang Zhiyu Huang Yonghui,et al,2021.An investigation of energy consumption variation in rock blasting breaking with the resistance line[J].Explosion and Shock Waves41(7):151-160.

Li Linjun2022.Research on Raise Excavation Technology by Long Hole Blasting Considering Hole Deviation [D].Changsha:Central South University.

Li Qing Guo Yang Xu Wenlong,et al,2019a.Investigation on the dynamic fracture property of oblique open-joints under bunch-hole explosion[J].Journal of Vibration and Shock38(6):151-158.

Li Qing Zhang Suixi Wan Minghua,et al,2019b.Study on the influence of length-diameter ratio on the mechanical characteristics of cracks at the end of linear charges[J].Journal of Mining Science and Technology4(2):112-119.

Li Xiaohan Liu Kewei Yang Jiacai,et al,2019.Analysis of blasting vibration effects under different ground stress[J].Gold Science and Technology27(2):241-248.

Liu Jiandong Chen He Sun Zhongming,et al,2011.Study and application of efficient blasting technology of parallel dense bundle deep holes[J].Engineering Blasting17(2):23-25,64.

Liu Jiandong Chen He Wang Huxin,et al,2012.Study and application on efficient mining technology for residual mine based on bundle boles large-scale blasting[J].China Mining Magazing21(4):76-78,86.

Luo S Yan P Lu W B,et al,2021.Effects of in-situ stress on blasting damage during deep tunnel excavation[J].Arabian Journal for Science and Engineering46(11):11447-11458.

Ma Yanjun Yang Jun2021.The practice of cutting slotting blasting technology in high stage mine room of Tieshan mining area[J].Modern Mining37(12):144-148.

Pang Ningbo Yang Yongkang2023.Numerical simulation on damage evolution of rock porous blasting under in-situ stress[J].Mining Research and Development43(10):119-125.

Peng J Zhang F Du C,et al,2020.Effects of confining pressure on crater blasting in rock-like materials under electric explosion load[J].International Journal of Impact Engineering,139:103534.

Qiu Xianyang2018.Research on the Mechanisms and Application of Precise Short-delay Blasting[D].Changsha:Central South University.

Qiu Xianyang Shen Wenbo Zhang Zongguo,et al,2023.Effect of in-situ stresses on fracturing performance of crater blasting under different resistance lines[J].Journal of Central South University30(8):2686-2700.

Technology Center of Tongling Nonferrous Metals Group Holding Co.,Ltd., Central South University,Anhui Province Tongguan(Lujiang)Mining Co.,Ltd.,2014.Measurement study of stress relief method in the stress field of raw rock at Shaxi copper mine[R].Changsha:Central South University.

Wen Chen Qiao Qiuqiu Qiu Xianyang,et al,2023.Simulation of crack propagation induced by short delay blasting with blast holes in a combined fan pattern for deep well[J].Mining and Metallurgical Engineering43(1):26-31.

Xiao S Y Su L J Jiang Y J,et al,2019.Numerical analysis of hard rock blasting unloading effects in high in situ stress fields[J].Bulletin of Engineering Geology and the Environment,78:867-875.

Xie L X Lu W B Zhang Q B,et al,2017.Analysis of damage mechanisms and optimization of cut blasting design under high in-situ stresses[J].Tunnelling and Underground Space Technology,66:19-33.

Xie Liangbo Li Erbao Zhang Xiliang,et al,2020.Test study on optimal values of blasting parameters of combined holes under lateral load [J].Metal Mine49(7):33-39.

Xiong Changran Chen He2024.Attenuation law of bunch-holes and equivalent large hole blasting stress wave in jointed rock mass[J].Mining and Metallurgy33(1):1-8.

Yang Haitao Li Erbao Yi Haibao,et al,2021.Numerical simulation research on rock breaking law of combined hole blasting under different stress conditions[J].Blasting38(2):88-94.

Yang Jianhua Wu Zenan Yao Chi,et al,2020.Influences of in-situ stress on blast-induced rock fracture and seismic waves[J].Journal of Vibration and Shock39(13):64-70,90.

Yang L Y Ding C X2018.Fracture mechanism due to blast-imposed loading under high static stress conditions[J].International Journal of Rock Mechanics and Mining Sciences,107:150-158.

Yi C Sjöberg J Johansson D2017.Numerical modelling for blast-induced fragmentation in sublevel caving mines[J].Tunnelling and Underground Space Technology,68:167-173.

Zhang F Yan G Peng J,et al,2020.Experimental study on crack formation in sandstone during crater blasting under high geological stress[J].Bulletin of Engineering Geology and the Environment,79:1323-1332.

Zhang S A Qiu X Y Shi X Z,et al,2022.Influence of detonator delay scatter on rock fragmentation by bunch-holes blasting[J].Geomechanics and Geophysics for Geo-Energy and Geo-Resources8(5):136.

Zhao Xingdong Song Jingyi Zhou Xin,et al,2023.Optimization of parameters for medium-deep hole slot blasting during mining blasting[J].Explosive Materials52(5):50-56,64.

Zhi Wei Qiu Xianyang Li Xiaoyuan,et al,2022.Study on vibration attenuation characteristics of blasting with bunch-holes[J].Mining Technology22(4):173-178.

陈何,2022.束状组合孔爆破机理及增强破岩作用模型研究[D].北京:北京科技大学.

陈何,2023.束状组合孔炮孔最佳间距的研究[J].有色金属(矿山部分)75(4):78-81,96.

陈何,汪旭光,2023.束状组合孔爆破增强破岩作用机理研究[J].有色金属工程13(4):120-126.

崔新男,汪旭光,陈何,等,2019.束状组合孔双分层孔内延期爆破试验研究[J].有色金属(矿山部分)71(2):82-85.

金鹏,刘科伟,李旭东,等,2021.深部岩体水耦合爆破裂纹扩展数值模拟研究[J].黄金科学技术29(1):108-119.

雷振,张智宇,黄永辉,等,2021.岩石爆破破碎能耗随抵抗线的变化规律[J].爆炸与冲击41(7):151-160.

李林军,2022.考虑炮孔偏斜的深孔爆破成井技术研究[D]. 长沙:中南大学.

李清,郭洋,徐文龙,等,2019a.束状炮孔爆破倾斜张开节理的动态断裂特性研究[J].振动与冲击38(6):151-158.

李清,张随喜,万明华,等,2019b.长径比对束状炮孔端部裂纹力学特征影响的研究[J].矿业科学学报4(2):112-119.

李萧翰,刘科伟,杨家彩,等,2019.不同地应力下爆破振动效应分析[J].黄金科学技术27(2):241-248.

刘建东,陈何,孙忠铭,等,2011.平行密集束状深孔高效爆破技术研究及应用[J].工程爆破17(2):23-25,64.

刘建东,陈何,王湖鑫,2012.束状孔大量落矿残矿高效回采工艺技术研究与应用[J].中国矿业21(4):76-78,86.

马彦军,杨俊,2021.铁山矿区采场高阶段矿房切割拉槽爆破技术实践[J].现代矿业37(12):144-148.

庞宁波,杨永康,2023.地应力下岩石多孔爆破损伤演化数值模拟[J].矿业研究与开发43(10):119-125.

邱贤阳,2018.精确短延时爆破作用机理及技术应用研究[D].长沙:中南大学.

邱贤阳,沈文博,张宗国,等,2023.不同抵抗线下地应力对漏斗爆破破碎的影响[J].中南大学学报30(8):2686-2700.

铜陵有色金属集团控股有限公司技术中心,中南大学,安徽铜冠(庐江)矿业有限公司, 2014.沙溪铜矿区原岩应力场应力解除法测量研究[R].长沙:中南大学.

温晨,乔秋秋,邱贤阳,等,2023.深井扇形组合孔短延时爆破裂纹扩展模拟研究[J].矿冶工程43(1):26-31.

谢亮波,李二宝,张西良,等,2020.侧向荷载下组合孔爆破参数优化取值试验研究[J].金属矿山49(7):33-39.

熊常然,陈何,2024.束状孔与当量大孔爆破应力波在节理岩体中的衰减规律[J].矿冶33(1):1-8.

杨建华,吴泽南,姚池,等,2020.地应力对岩石爆破开裂及爆炸地震波的影响研究[J].振动与冲击39(13):64-70,90.

杨海涛,李二宝,仪海豹,等,2021.不同应力条件下组合孔爆破破岩规律数值模拟研究[J].爆破38(2):88-94.

赵兴东,宋景仪,周鑫,2023.矿房回采爆破时中深孔拉槽爆破的参数优化研究[J].爆破器材52(5):50-56,64.

支伟,邱贤阳,李小元,等,2022.束状组合孔爆破振动衰减特性研究[J].采矿技术22(4):173-178.

文章导航

/

[an error occurred while processing this directive]