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金属矿山 ›› 2022, Vol. 51 ›› Issue (07): 97-104.

• “矿山爆破理论与新技术进展”专题 • 上一篇    下一篇

减振孔参数降振作用的灰色关联度分析

段宝福1,2张正欣1,2张春武3孙宗军1,4   

  1. 1.山东科技大学土木工程与建筑学院,山东 青岛 266590;2.江汉大学爆破工程湖北省重点实验室,湖北 武汉 430056;3.中铁武汉勘察设计研究院有限公司,湖北 武汉 430074;4.青岛瑞翰科技集团,山东 青岛 266061
  • 出版日期:2022-07-15 发布日期:2022-07-31
  • 基金资助:
    山东省自然科学基金项目(编号:ZR2020ME096);爆破工程湖北省重点实验室开放基金项目(编号:BL202124);青岛西海岸新区高层次人才团队项目(编号:RCTDJC201906)。

Grey Correlation Analysis of Vibration Reduction Effect of Damping Hole Parameters

DUAN Baofu1,2ZHANG Zhengxin1,2ZHANG Chunwu3SUN Zongjun1,4   

  1. Grey Correlation Analysis of Vibration Reduction Effect of Damping Hole Parameters
  • Online:2022-07-15 Published:2022-07-31

摘要: 矿山和隧道爆破会对邻近建筑物产生一定的振动危害,有必要在施工过程中探索可行的减振措施。在工作面设置减振孔是一种新型的主动减振技术,通过对减振孔的研究能够为矿山和隧道爆破设计提供合理的减振方案。结合现场实测和数值计算,对爆破施工过程中减振孔的减振作用规律进行了分析,运用灰色关联度理论,确定了减振孔参数对减振效果的影响程度,各参数影响减振作用的主次关系为:减振孔孔缘距>减振孔距爆源的距离>减振孔孔径>减振孔孔深>双排减振孔排距。结合数值计算和现场施工效果的综合分析,发现施工过程中减振孔孔缘距120 mm、减振孔距爆源的距离2 000 mm、减振孔孔径120 mm以上、减振孔孔深1 200~1 500 mm、双排减振孔排距50~100 mm,能够取得较好的减振效果。数值模拟、灰色关联度分析和实测数据的分析结果在减振效果方面表现出了很好的一致性,能够为矿山和隧道爆破施工提供一种可供参考的减振技术,对于类似工程的爆破方案设计与振动控制有一定的参考意义。

关键词: 矿山爆破, 减振孔, 降振作用, 灰色关联度分析, 振动速度

Abstract: Blasting in mines and tunnels will cause certain vibration hazards to adjacent buildings,and it is necessary to explore feasible vibration reduction measures during the construction process.Setting vibration-damping holes in the working face is a new type of active vibration-damping technology.The research on vibration-damping holes can provide a reasonable vibration-damping scheme for mine and tunnel blasting design.Combined with field measurement and numerical calculation,the law of vibration damping effect of vibration damping holes during blasting construction was analyzed,and the grey correlation degree theory was used to determine the degree of influence of vibration damping hole parameters on vibration damping effect,and each parameter affected vibration damping effect.The primary and secondary relationship can be described as:distance between the edge of the damping hole>distance between the damping hole and the explosion source>diameter of the damping hole>depth of the damping hole>row spacing of the double-row damping hole.Combined with numerical calculation and comprehensive analysis of on-site construction effects,it is found that during the construction process,the distance between the edge of the vibration-damping holes is 120 mm,the distance between the vibration-absorbing holes and the explosion source is 2 000 mm,the diameter of the vibration-absorbing holes is more than 120 mm,and the depth of the vibration-absorbing holes is 1 200~1 500 mm,double-row vibration-damping hole spacing is 50~100 mm,which can achieve better vibration-damping effect.The results of numerical simulation,gray correlation analysis and measured data show good consistency in the vibration reduction effect,which can provide a reference vibration reduction technology for blasting construction in mines and tunnels.It has certain reference value and guiding significance for vibration control.

Key words: mine blasting,damping hole,vibration reduction effect,grey correlation analysis,vibration speed