金堆城露天矿空气间隔装药减震控制爆破试验研究
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摘要
为确保金堆城露天矿东川河隧洞的安全,采用空气间隔装药爆破方式来控制爆破震动。采用连续装药爆破和空气间隔装药爆破两种方式进行现场试验,分别选取离隧洞60 m、80 m、100 m、120 m、140 m的爆心距下爆破振动速度进行对比分析,得出空气间隔装药爆破试验具有明显的减震效果,减震率分别为22.76%、33.94%、27.59%、29.85%和31.91%。采用块度分析软件对爆破后的破碎效果进行分析比较,结果表明采用空气间隔装药比连续装药爆破产生的岩石块度分布均匀、平均块度和最大块度小、大块率低、破碎度高。
In order to ensure the safety of the Dongchuan river tunnel in Jinduicheng open-pit mine,the air-decking blasting was adopted to control blasting vibration.The field tests of continuous charging and air-decking charging blasting were carried out far from blast source 60 m,80 m,100 m,120 m,and 140 m,respectively.Also,the blasting vibration velocities were analyzed contrastively.Testing results show that air-decking charging blasting test had obvious effect on reducing vibration,and the rates of reducing vibration were 22.76%,33.94%,27.59%,29.85%,27.59% respectively.The fragmentation analysis shows that,compared to continuous charging blasting,the fragmentation of air-decking charging blasting was more even,and the average lumpiness and large lumpiness were much smaller.
In order to ensure the safety of the Dongchuan river tunnel in Jinduicheng open-pit mine,the air-decking blasting was adopted to control blasting vibration.The field tests of continuous charging and air-decking charging blasting were carried out far from blast source 60 m,80 m,100 m,120 m,and 140 m,respectively.Also,the blasting vibration velocities were analyzed contrastively.Testing results show that air-decking charging blasting test had obvious effect on reducing vibration,and the rates of reducing vibration were 22.76%,33.94%,27.59%,29.85%,27.59% respectively.The fragmentation analysis shows that,compared to continuous charging blasting,the fragmentation of air-decking charging blasting was more even,and the average lumpiness and large lumpiness were much smaller.
引文
[1]吴亮,朱红兵,卢文波.空气间隔装药爆破研究现状与探讨[J].工程爆破,2009,15(1):16-19.
[1]WU Liang,ZHU Hong-bing,LU Wen-bo.An overview and discussion of the study on air-decking blasting[J].Engineering Blasting,2009,15(1):16-19.(in Chinese)
[2]辜大志,谢圣权,陈寿如.孔底空气间隔装药改善爆破震动和效果的研究[J].采矿技术,2004,4(4):64-66.
[2]GU Da-zhi,XIE Sheng-quan,CHEN Shou-ru.Study on improving blasting vibration and effect with air-decking at the bottom of the bore[J].Mining Technology,2004,4(4):64-66.(in Chinese)
[3]吕淑然.炮孔轴向不同间隔方式的爆破地震效应研究[J].安全与环境学报,2006,6(S1):102-105.
[3]LV Shu-ran.Effect research on blasting seismic with different intervals in hole axial[J].Journal of Safety and Environment,2006,6(S1):102-105.(in Chinese)
[4]刘为洲.南山矿凹山采场减震爆破试验研究[J].金属矿山,2004(6):22-23.
[4]LIU Wei-zhou.Research on vibration-reduced blasting tests at Washan pit Nanshan Iron Mine[J].Metal Mine,2004(6):22-23.(in Chinese)
[5]池恩安,梁开水,赵明生.孔底空气间隔装药降振试验研究[J].煤炭学报,2012,37(6):944-950.
[5]CHI En-an,LIANG Kai-shui,ZHAO Ming-sheng.Experimental study on vibration reduction of the hole-bottom air space charging[J].Journal of China Coal Society,2012,37(6):944-950.(in Chinese)
[6]叶海旺,康强,赵明生,等.节理裂隙岩体空气间隔装药爆破试验研究术[J].爆破,2012,29(2):26-30,37.
[6]YE Hai-wang,KANG Qiang,ZHAO Ming-sheng,et al.Experimental study on air-decking charging explosion in jointed and fractured rock mass[J].Blasting,2012,29(2):26-30,37.(in Chinese)
[1]WU Liang,ZHU Hong-bing,LU Wen-bo.An overview and discussion of the study on air-decking blasting[J].Engineering Blasting,2009,15(1):16-19.(in Chinese)
[2]辜大志,谢圣权,陈寿如.孔底空气间隔装药改善爆破震动和效果的研究[J].采矿技术,2004,4(4):64-66.
[2]GU Da-zhi,XIE Sheng-quan,CHEN Shou-ru.Study on improving blasting vibration and effect with air-decking at the bottom of the bore[J].Mining Technology,2004,4(4):64-66.(in Chinese)
[3]吕淑然.炮孔轴向不同间隔方式的爆破地震效应研究[J].安全与环境学报,2006,6(S1):102-105.
[3]LV Shu-ran.Effect research on blasting seismic with different intervals in hole axial[J].Journal of Safety and Environment,2006,6(S1):102-105.(in Chinese)
[4]刘为洲.南山矿凹山采场减震爆破试验研究[J].金属矿山,2004(6):22-23.
[4]LIU Wei-zhou.Research on vibration-reduced blasting tests at Washan pit Nanshan Iron Mine[J].Metal Mine,2004(6):22-23.(in Chinese)
[5]池恩安,梁开水,赵明生.孔底空气间隔装药降振试验研究[J].煤炭学报,2012,37(6):944-950.
[5]CHI En-an,LIANG Kai-shui,ZHAO Ming-sheng.Experimental study on vibration reduction of the hole-bottom air space charging[J].Journal of China Coal Society,2012,37(6):944-950.(in Chinese)
[6]叶海旺,康强,赵明生,等.节理裂隙岩体空气间隔装药爆破试验研究术[J].爆破,2012,29(2):26-30,37.
[6]YE Hai-wang,KANG Qiang,ZHAO Ming-sheng,et al.Experimental study on air-decking charging explosion in jointed and fractured rock mass[J].Blasting,2012,29(2):26-30,37.(in Chinese)
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