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黄金科学技术 ›› 2021, Vol. 29 ›› Issue (3): 401-410.doi: 10.11872/j.issn.1005-2518.2021.03.174

• 采选技术与矿山管理 • 上一篇    下一篇

地下爆破精确延时逐孔起爆减振试验研究

李祥龙1,2(),张其虎1(),王建国1,杨德源3,李斌4,朱兴彪4   

  1. 1.昆明理工大学国土资源工程学院,云南 昆明 650093
    2.云南省中—德蓝色矿山与特殊地下矿山开发利用重点实验室,云南 昆明 650093
    3.昆明钢铁集团有限责任公司大红山铁矿,云南 新平 653100
    4.永善金沙矿业有限责任公司,云南 永善 657305
  • 收稿日期:2020-09-27 修回日期:2021-02-09 出版日期:2021-06-30 发布日期:2021-07-14
  • 通讯作者: 张其虎 E-mail:lxl00014002@163.com;zhang18487084511@163.com
  • 作者简介:李祥龙(1981-),男,安徽淮北人,教授,博士生导师,从事爆破理论与技术研究工作。lxl00014002@163.com
  • 基金资助:
    永善金沙矿业有限责任公司横向课题项目“永善金沙矿业爆破参数优化振动控制关键技术”(619320190103);“万人计划青年拔尖人才培养经费”(109720190056);国家自然科学基金项目“精确延时数(单)一响预裂爆破成缝研究”(619220150041)

Experimental Study on Precise Delay Hole-by-Hole Blasting Vibration Reduction of Underground Blasting

Xianglong LI1,2(),Qihu ZHANG1(),Jianguo WANG1,Deyuan YANG3,Bin LI4,Xingbiao ZHU4   

  1. 1.Faculty of Land Resources Engineer,Kunming University of Science and Technology,Kunming 650093,Yunnan,China
    2.Key Laboratory of Development and Utilization of Zhongde Blue Mine and Special Underground Mine,Kunming 650093,Yunnan,China
    3.Dahongshan Iron Mine,Kunming Iron & Steel Group Co. ,Ltd. ,Xinping 653100,Yunnan,China
    4.Yongshan Jinsha Mine Co. ,Ltd. ,Yongshan 657305,Yunnan,China
  • Received:2020-09-27 Revised:2021-02-09 Online:2021-06-30 Published:2021-07-14
  • Contact: Qihu ZHANG E-mail:lxl00014002@163.com;zhang18487084511@163.com

摘要:

为了有效控制地下爆破振动效应,改善岩石破碎效果,根据地下矿山实际生产条件,采用高精度高强度数码电子雷管,开展了精确延时逐孔起爆的现场试验研究,并运用MATLAB18.0对振动时程信号进行振动波形分析。由波形矢量合成分析结果可知,孔间延期时间为25 ms的振动速度峰值比延期时间为15 ms、20 ms、30 ms和35 ms的逐孔起爆依次降低了27%、8%、29%和52%;排间延期时间为75 ms时振动速度峰值比排间延期时间为25 ms、125 ms和200 ms的单排炮孔起爆依次降低了28%、26%和23%。由此可见,本试验条件下孔间延期时间与排间延期时间分别为25 ms和75 ms时,能够有效降低爆破振动强度。

关键词: 精确延时, 逐孔起爆, 峰值振速, 振动强度, 波形叠加, 干扰降振, 现场试验

Abstract:

The interference vibration reduction technology based on precise delay hole by hole initiation is not only an effective means to reduce blasting vibration,but also can improve the effect of rock fragmentation and realize the active control of blasting vibration effect and harm.The key of this technology is to calculate the accurate and reasonable delay time under the conditions of reasonable hole layout parameters,single hole charge and charge structure conditions.However,due to the low time delay accuracy and instability of the conventional ordinary nonel detonator,the effect of controlling the millisecond delay interval to reduce the blasting vibration is not good.Engineering blasting operations are mostly carried out in complex environments and have strict requirements on blasting vibration.Combining previous research results,an accurate and reasonable delay time for underground shallow hole blasting was given.At the same time,combined with the field test research,the application of accurate delay time in reducing blasting vibration was explored.In view of the fact that the digital electronic detonator initiation network can realize the precise control of the delay time of precise delay hole by hole initiation,the delay time can be set flexibly and the performance is stable,using high-precision and high-strength digital electronic detonator,the field test of precise delay hole by hole initiation was designed and carried out.And the vibration waveform velocity of vibration time history signal was analyzed by using MA-TLAB 18.0. In the field test,vector synthesis of the waveform can be obtained,and the peak velocity of the vibration waveform under the delay time between holes of 25 ms is reduced by 27%,8%,29%,52% compared with the peak velocity of 15,20,30,35 ms successively.The peak value of the vibration waveform velocity under the delay time between rows of 75 ms is reduced by 28%,26% and 23% compared with the delay of 25 ms,125 ms and 200 ms between rows of single row blastholes.The test results show that the reasonable delay time between holes and rows can effectively reduce the blasting vibration intensity.

Key words: precision delay, hole-by-hole initiation, peak vibration velocity, vibration intensity, waveform fusion, interference vibration reduction, field test

中图分类号: 

  • TD235

图1

第一次试验起爆网路示意图"

图2

第一次试验爆破振动波形"

图3

第一次试验爆破振动矢量合成图"

图4

第二次试验起爆网路示意图"

图5

第二次爆破振动波形"

图6

第二次爆破振动矢量合成图"

图7

第三次试验起爆网路示意图"

图8

第三次试验爆破振动波形图"

图9

第三次试验爆破振动矢量合成图"

图10

爆破效果图(a) 日常爆破;(b) 第三次爆破"

Blair D P,2009.Limitations of electronic delays for the control of blast vibration and fragmentation[C]//Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting.Granada:The Chemical Rubber Company Press:171-184.
Chen Shihai,Yan Yongfeng,Qi Guifeng,al et,2011.Analysis of influencing factors on seismic reduction effect of millisecond blasting[J].Geotechnical Mechanics,32(10):3003-3008.
Chen Shouru,Li Yanling,Xie Shengquan,2004.Experimental study on blasting technology with step interference in open pit stope[J].Journal of Hunan University of Science and Technology (Natural Science Edition),19(2):10-13.
Cheng Ming,2020. Research on Blasting Parameters and Hole-by-hole Initiation Optimization of 108 and 402 Sections of Jinsha Mining[D].Kunming:Kunming University of Science and Technology.
Fang Guifu,Fang Chun,Liu Xiankui,al et,2011.Delay optimization engineering practice of electronic detonator for urban blasting[J].Engineering Blasting,17(3):81-84.
Gao Wenxue,Liu Hongyu,Liu Hongyang,al et,2010.Analysis of the influence of blasting excavation on the stability of high cutting slope[J].Journal of Rock Mechanics and Engineering,29 (Supp.1):2982-2987.
Gao Wenxue,Liu Yuntong,2003.Energy dissipation of rock damage under impact load[J].Journal of Rock Mechanics and Engineering,22(11):1777-1780.
Gong Min,Shi Facai,Wu Xiaodong,2019.Study on delay time of electronic detonator based on superposition and spectrum analysis[J].Journal of Vibration and Shock,38(15):134-141.
Guo Xuebin,Xiao Zhengxue,Zhang Zhicheng,2001.Slope effect of blasting vibration[J].Journal of Rock Mechanics and Engineering,20(1):83-87.
Han Liang,Li Hongjiang,Liu Dianshu,al et,2019.Probability analysis of detonator delay error on superposition and vibration reduction of seismic waves[J].Journal of Vibration and Shock,38(3):96-101,124.
Hu Guiying,Liu Kewei,Du Xin,al et,2018.Research on smooth cut blasting technology and its application in roadway excavation[J].Gold Science and Technology,26(3):349-356.
Li Shunbo,Yang Jun,2013.Numerical simulation of the influence of different millisecond delay between holes on blasting vibration[J].Journal of Coal Society,38(Supp.2):325-330.
Liao Zhiqin,Wang Liguan,He Zhengxiang,2020.Feature extraction and classification of mine microseismic signals based on EEMD and correlation dimension[J].Gold Science and Technology,28 (4):585-594.
Ling Tonghua,Li Xibing,2004.Identification of actual delay time in millisecond blasting by wavelet transform[J].Journal of Hunan University of Science and Technology (Natural Science Edition),19(2):21-23.
Ling Tonghua,Zhang Sheng,Yi Zhiqiang,al et,2012.EMD analysis of energy distribution characteristics of rock acou-stic emission signal[J].Journal of Vibration and Shock,31(11):26-31.
Liu Yuntong,Gao Wenxue,2001.Numerical simulation of rock damage under blast load[J].Journal of Rock Mechanics and Engineering,20(6):789-792.
Qiu X,Shi X,Gou Y,al et,2018.Short-delay blasting with single free surface:Results of experimental tests [J].Tunnelling &Underground Space Technology,74:119-130.
Qiu Xianyang,Shi Xiuzhi,Zhou Jian,al et,2017.Vibration reduction effect analysis of high precision detonator short millisecond blasting based on HHT energy spectrum[J].Explosion and Shock Waves,37(1):107-113.
Richards A B,Moore A J,2017.Factors affecting frequency control of blast vibration[C]//New Development on Engineering Blasting.Beijing:Metallurgical Industry Press:305-310.
Song Guangming,Zeng Xinwu,Chen Shouru,al et,2003.Vibration reduction time selection based on wavelet packet analysis model of waveform prediction[J].Explosion and Shock Waves,23(2):163-168.
Xing Guangwu,Zhang Beilong,Ji Zhenxi,2016.Directional blasting demolition of 120 m chimney in Wushadesheng power plant,Shunde[J].Blasting,33(3):92-95.
Xu Zhenyang,Yang Jun,Chen Zhanyang,al et,2014.Study on energy distribution of blasting seismic wave[J].Journal of Vibration and Shock,33(11):38-42.
Yang Guoliang,Jiang Linlin,Yang Renshu,2013.Study on double wedge deep hole cutting blasting[J].Journal of China University of Mining and Technology,42(5):755-760.
Yang J H,Lu W B,Jiang Q H,al et,2016.Frequency comparison of blast-induced vibration per delay for the full-face millisecond delay blasting in underground opening excavation[J].Tunnelling & Underground Space Technology Incorporating Trenchless Technology Research,51:189-201.
Yang Nianhua,Zhang Le,2012.Numerical prediction method of blasting vibration wave superposition[J].Explosion and Shock Waves,32(1):84-90.
Yang Renshu,Fu Xiaoqiang,Yang Guoliang,al et,2017.Application of EMD and FSWT combination method in blasting vibration signal analysis[J].Journal of Vibration and Shock,36(2):58-64.
Zhang Guangxiong,Yang Jun,Lu Hongwei,2009.Study on vibration reduction effect of millisecond delay blasting[J].Engineering Blasting,15(3):17-21.
Zhang Liang,Ling Tonghua,Chen Zenghui,al et,2020.Determination of actual delay time of millisecond blasting based on improved CEEMDAN method[J].Explosion and Shock Waves,39(20):274-280.
Zhang Yiping,Li Xibing,Zhao Guoyan,al et,2005.Time frequency analysis of blasting vibration signal[J].Journal of Geotechnical Engineering,27(12):1472-1477.
Zhang Zhicheng,2013.Control of engineering blasting[J].Journal of Underground Space and Engineering,9(5):1208-1214.
Zhao Mingsheng,Liang Kaishui,Yu Deyun,al et,2012.Analysis of influence of segment number on time frequency characteristics of blasting vibration signal[J].Journal of Coal Society,37(1):55-61.
Zheng Guichu,Xing Guangwu,2019.Demolition of 120 m reinforced concrete chimney by controlled blasting[J].Mining Technology,19(4):128-131.
Zhong Dongwang,He Li,Cao Peng,al et,2016.Analysis of blasting vibration duration and optimization of delay time of millisecond blasting[J].Explosion and Shock Waves,36(5):703-709.
陈士海,燕永峰,戚桂峰,等,2011.微差爆破降震效果影响因素分析[J].岩土力学,32(10):3003-3008.
陈寿如,李雁翎,谢圣权,2004.露天采场台阶干扰降震爆破技术试验研究[J].湖南科技大学学报(自然科学版),19(2):10-13.
程明,2020.金沙矿业108、402矿段爆破参数及逐孔起爆优化研究[D].昆明:昆明理工大学.
方桂富,方春,刘先魁,等,2011.城镇爆破电子雷管延时优选工程实践[J].工程爆破,17(3):81-84.
高文学,刘宏宇,刘洪洋,等,2010.爆破开挖对路堑高边坡稳定性影响分析[J].岩石力学与工程学报,29(增1):2982-2987.
高文学,刘运通,2003.冲击载荷作用下岩石损伤的能量耗散[J].岩石力学与工程学报,22(11):1777-1780.
龚敏,石发才,吴晓东,2019.基于叠加和频谱分析的电子雷管延期时间研究[J].振动与冲击,38(15):134-141.
郭学彬,肖正学,张志呈,2001.爆破振动作用的坡面效应[J].岩石力学与工程学报,20(1):83-87.
韩亮,李红江,刘殿书,等,2019.雷管延期误差对地震波叠加降振的概率分析[J].振动与冲击,38(3):96-101,124.
胡桂英,刘科伟,杜鑫,等,2018.光面掏槽爆破技术的研究及其在巷道掘进中的应用[J].黄金科学技术,26(3):349-356.
李顺波,杨军,2013.孔间不同毫秒延时对爆破振动影响的数值模拟[J].煤炭学报,38(增2):325-330.
廖智勤,王李管,何正祥,2020.基于EEMD和关联维数的矿山微震信号特征提取和分类[J].黄金科学技术,28(4):585-594.
凌同华,李夕兵,2004.用小波变换识别微差爆破中的实际延迟时间[J].湖南科技大学学报(自然科学版),19(2):21-23.
凌同华,张胜,易志强,等,2012.岩石声发射信号能量分布特征的EMD分析[J].振动与冲击,31(11):26-31.
刘运通,高文学,2001.爆炸荷载下岩石损伤的数值模拟研究[J].岩石力学与工程学报,20(6):789-792.
邱贤阳,史秀志,周健,等,2017.基于HHT能量谱的高精度雷管短微差爆破降振效果分析[J].爆炸与冲击,37(1):107-113.
宋光明,曾新吾,陈寿如,等,2003.基于波形预测小波包分析模型的降振微差时间选择[J].爆炸与冲击,23(2):163-168.
邢光武,张北龙,姬震西,2016.顺德五沙德胜电厂120 m烟囱定向爆破拆除[J].爆破,33(3):92-95.
徐振洋,杨军,陈占扬,等,2014.爆破地震波能量分布研究[J].振动与冲击,33(11):38-42.
杨国梁,姜琳琳,杨仁树,2013.复式楔形深孔掏槽爆破研究[J].中国矿业大学学报,42(5):755-760.
杨年华,张乐,2012.爆破振动波叠加数值预测方法[J].爆炸与冲击,32(1):84-90.
杨仁树,付晓强,杨国梁,等,2017.EMD和FSWT组合方法在爆破振动信号分析中的应用研究[J].振动与冲击,36(2):58-64.
张光雄,杨军,卢红卫,2009.毫秒延时爆破干扰降振作用研究[J].工程爆破,15(3):17-21.
张亮,凌同华,陈增辉,等,2020.基于改进CEEMDAN方法确定微差爆破实际延期时间[J].振动与冲击,39(20):274-280.
张义平,李夕兵,赵国彦,等,2005.爆破震动信号的时频分析[J].岩土工程学报,27(12):1472-1477.
张志呈,2013.工程爆破的控制[J].地下空间与工程学报,9(5):1208-1214.
赵明生,梁开水,余德运,等,2012.段数对爆破振动信号的时频特性影响分析[J].煤炭学报,37(1):55-61.
郑桂初,邢光武,2019.120 m钢筋混凝土烟囱控制爆破拆除[J].采矿技术,19(4):128-131.
钟冬望,何理,操鹏,等,2016.爆破振动持时分析及微差爆破延期时间优选[J].爆炸与冲击,36(5):703-709.
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