[1]费鸿禄,陈坤,聂寒,等.考虑采空区稳定性的矿柱回采爆破参数的优化与应用[J].爆破器材,2024,53(05):55-64.[doi:10.3969/j.issn.1001-8352.2024.05.009]
　FEI Honglu,CHEN Kun,NIE Han,et al.Optimization and Application of Blasting Parameters for Pillar Recovery Considering Goaf Stability[J].EXPLOSIVE MATERIALS,2024,53(05):55-64.[doi:10.3969/j.issn.1001-8352.2024.05.009]
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考虑采空区稳定性的矿柱回采爆破参数的优化与应用()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
53
期数:
2024年05
页码:
55-64
栏目:
爆破技术
出版日期:
2024-10-11

文章信息/Info

Title:
Optimization and Application of Blasting Parameters for Pillar Recovery Considering Goaf Stability
文章编号:
5920
作者:
费鸿禄; 陈坤; 聂寒; 袁立亮
辽宁工程技术大学爆破技术研究院（辽宁阜新，123000）
Author(s):
FEI Honglu;  CHEN Kun;  NIE Han;  YUAN Liliang
Institute of Blasting Technology, Liaoning Technical University (Liaoning Fuxin, 123000)
关键词:
矿柱回采; 采空区稳定性; 炸药单耗; 排间延时; 爆破块度
Keywords:
pillar recovery;  goaf stability;  unit consumption of explosive;  inter-row delay;  blast block size
分类号:
TD235
DOI:
10.3969/j.issn.1001-8352.2024.05.009
文献标志码:
A
摘要:
为安全、高效地回收大型贯通采空区残留的厚大矿柱资源，应用LS-DYNA软件对炸药单耗和排间延时进行数值模拟并优化。依据Von Mises屈服准则，分析在不同炸药单耗和排间延时条件下孔底单元的等效应力、采空区底板单元的峰值等效应力和峰值振速。使用优化后的方案进行爆破，对采空区围岩进行爆破振动监测，分析采空区的稳定性。采用Split-Desktop 4.0软件对爆堆进行块度分析。结果显示：峰值等效应力和峰值振速均与炸药单耗正相关；排间延时对等效应力的影响不显著；峰值振速随排间延时的增大呈先降低、后小幅波动的变化。当炸药单耗为1.32 kg/m3、排间延时为100 ms时，单元的等效应力达到爆破破碎效果，且爆破振动未对采空区的安全稳定造成影响。将优化后的炸药单耗和排间延时应用于矿柱回采爆破，采空区底板的实测峰值振速为14.39 cm/s，满足矿山巷道安全标准，保证了采空区的安全稳定；爆破大块率由8.00%左右下降到4.28%，提升了爆破效果。
Abstract:
To safely and efficiently recover the thick and large ore pillar resources remaining in the large through goaf, LS-DYNA software was applied to numerically simulate and optimize unit consumption of explosive and inter-row delay. According to Von Mises yield criterion, equivalent stress of the ore rock, peak equivalent stress and peak vibration velocity of the goaf floor under different explosive consumption and inter row delay conditions were analyzed. The optimized plan was used for blasting, and blasting vibration monitoring was carried out on the surrounding rock of the goaf to analyze the stability of the goaf. Split-Desktop 4.0 software was used for block analysis of the exploded pile. The results show that both peak equivalent stress and peak vibration velocity are positively correlated with the unit consumption of explosives. The impact of inter-row delay on the equivalent effect stress is not significant. Peak vibration velocity decreases first and then fluctuates slightly with the increase of inter-row delay. When unit consumption of explosive is 1.32 kg/m3 and inter-row delay is 100 ms, the equivalent stress of unit can cause the blasting fragmentation, and the blasting vibration does not affect the safety and stability of the goaf. The optimized explosive consumption and inter-row delay were applied to the blasting of mining pillars. The measured peak vibration velocity of the surrounding rock in the goaf is 14.39 cm/s, which meets the safety standards of mining tunnels and ensures the safety and stability of the goaf. Blasting block rate has decreases from around 8.00% to 4.28%, bringing good blasting outcomes.

参考文献/References:

［1］PENG C, WANG M, YAN Z. Application of fuzzy comprehensive on goaf stability evaluation based on AHP ［C］//Proceedings of the 7th Academic Conference of Geology Resource Management and Sustainable Development. Beijing, 2019.
［2］JIANG L C, JIAO H Z, XIE B, et al. Study on safety coefficient of sedimentary bauxite strip pillar under valley terrain ［J］. International Journal of Environmental Research and Public Health, 2022, 19(17): 10991.
［3］WANG Z, LI A. Research on grey relational analysis of blasting parameter optimization［C］// Proceedings of 2019 2nd International Conference on Mechanical Engineering, Industrial Materials and Industrial Electronics (MEIMIE 2019). Clausius Scientific Press, 2019: 12-15.
［4］ZENG Q T, LIU K W, LI X H, et al. Blasting parameter optimization for room adjacent to cemented filling pillar ［J］. Journal of Engineering Science and Technology Review, 2016, 9(4): 185-191.
［5］李祥龙, 张其虎, 王建国, 等. 地下爆破精确延时逐孔起爆减振试验研究［J］. 黄金科学技术, 2021, 29(3): 401-410.
LI X L, ZHANG Q H, WANG J G, et al. Experimental study on precise delay hole-by-hole blasting vibration reduction of underground blasting ［J］. Gold Science and Technology, 2021, 29(3): 401-410.
［6］张阳光, 林飞, 赵彭, 等. 延时时间对露天深孔爆破破碎效果的影响研究［J］. 工程爆破, 2021, 27(4): 69-75.
ZHANG Y G, LIN F, ZHAO P, et al. Rearch on the influence of delay time on fragmentation in open-pit deep hole blasting ［J］. Engineering Blasting, 2021, 27(4): 69-75.
［7］邓红卫, 杨懿全, 高峰, 等. 基于LS-DYNA的扇形中深孔逐孔起爆段别优化［J］. 振动与冲击, 2017, 36(11): 140-146.
DENG H W, YANG Y Q, GAO F, et al. Optimization of millisecond parameters for hole by hole initiation in fan-shape deep holes based on LS-DYNA ［J］. Journal of Vibration and Shock, 2017, 36(11): 140-146.
［8］费鸿禄, 郭玉新. 基于LS-DYNA的交错扇形深孔崩落法排间间隔时间优化研究［J］. 中国安全生产科学技术, 2022, 18(4): 127-134.
FEI H L, GUO Y X. Study on optimized selection for row interval time of staggered sector deephole caving method based on LS-DYNA ［J］. Journal of Safety Science and Technology, 2022, 18(4): 127-134.
［9］FU J X, SONG W D, TAN Y Y. Study of stability and evolution indexes of gobs under unloading effect in the deep mines ［J］. Geomechanics and Engineering, 2018, 14(5): 439-451.
［10］ZHANG X Y, YAN P, LUO S, et al. Numerical investigation of blasting damage characteristics and optimization of fan-pattern boreholes in deep mining ［J］. Arabian Journal of Geosciences, 2022, 15:1560.
［11］聂寒. 白音诺尔铅锌矿采空区稳定性及矿柱回采爆破参数优化研究［D］.阜新: 辽宁工程技术大学, 2023.?
NIE H. Study on goaf stability and pillar stoping blasting parameters optimization in Baiyinnuoer Lead-zinc Mine［D］.Fuxin: Liaoning Technical University, 2023.
［12］周清,齐麟. LS-DYNA软件中5种常用抗爆混凝土材料模型的分析与比较［J］. 混凝土, 2019(11): 43-49.
ZHOU Q, QI L. Analysis and comparison of 5 different common anti-explosion concrete material models of LS-DYNA software ［J］. Concrete, 2019(11): 43-49.
［13］费鸿禄, 聂寒, 杨智广. 白音诺尔露天坑底隔离矿柱爆破参数优化研究［J］. 矿冶工程, 2023, 43(6): 47-53.
FEI H L, NIE H, YANG Z G. Optimization of blasting parameters of isolated pillars at bottom of Biyinnuoer Open Pit［J］. Mining and Metallurgical Engineering, 2023, 43(6): 47-53.
［14］赵铮, 陶钢, 杜长星. 爆轰产物JWL状态方程应用研究［J］. 高压物理学报, 2009, 23(4): 277-282.
ZHAO Z, TAO G, DU C X. Application research on JWL equation of state of detonation products ［J］. Chinese Journal of High Pressure Physics, 2009, 23(4): 277-282.
［15］钱七虎, 戚承志. 岩石、岩体的动力强度与动力破坏准则［J］. 同济大学学报(自然科学版), 2008, 36(12): 1599-1605.
QIAN Q H, QI C Z. Dynamic strength and dynamic fracture criteria of rock and rock mass ［J］. Journal of Tongji University (Natural Science), 2008, 36(12): 1599-1605.
［16］潘淼昌, 武永猛, 史秀志, 等. 凡口铅锌矿扇形中深孔爆破参数数值模拟研究［J］. 采矿技术, 2013, 13(5): 87-89, 142.
［17］国家安全生产监督管理总局. 爆破安全规程: GB 6722—2014 ［S］. 北京: 中国标准出版社, 2014.State Administration of Work Safety. Safety regulations for blasting: GB 6722—2014 ［S］. Beijing: Standards Press of China, 2014.

备注/Memo

备注/Memo:
收稿日期：2024-01-03
第一作者：费鸿禄（1963—），男，博士，博导，主要从事爆破工程和地下工程的科研与教学工作等方面的研究。E-mail：feihonglu@163.com
通信作者：陈坤（1998—），男，硕士研究生，主要从事工程爆破方面的研究。E-mail：15152002518@163.com
更新日期/Last Update: 2024-10-10