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孙中博,王海亮,贺晨,等. 竖井横通道爆炸冲击波传播规律试验研究[J]. 科学技术与工程, 2020, 20(30): 12367-12371.
sunzhongbo,贺晨,et al.Experimental study on the propagation law of shock wave in cross channel of shaft[J].Science Technology and Engineering,2020,20(30):12367-12371.
竖井横通道爆炸冲击波传播规律试验研究
Experimental study on the propagation law of shock wave in cross channel of shaft
投稿时间:2019-11-25  修订日期:2020-08-03
DOI:
中文关键词:  竖井  横通道  冲击波  超压峰值  现场试验  
英文关键词:shaft  cross channel  shock wave  overpressure peak  field test
基金项目:国家自然科学基金项目(10672091)、青岛市建委科技项目(JK2013-4)
              
作者单位
孙中博 山东科技大学矿业与安全工程学院
王海亮 山东科技大学矿业与安全工程学院
贺晨 中铁三局集团第四工程有限公司
陈国防 中铁三局集团第四工程有限公司
刘涛 山东科技大学矿业与安全工程学院
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中文摘要:
      为了研究受限空间内爆炸冲击波传播规律,在青岛地铁8号线山东路南站1号竖井横通道进行裸露药包爆炸现场试验。利用NUBOX-9100瞬态信号测量仪及配备的传感器采集0.2、0.3、0.4 kg的2号岩石乳化炸药爆炸冲击波参数,分析实测冲击波信号的波形、超压峰值,并对冲击波信号进行短时傅里叶变换。结果表明:①横通道中裸露药包爆炸时,各观测点压力先迅速升高到最大值,随后震荡衰减;②由实测数据拟合出冲击波峰值压力修正公式,与现场实测数据误差不超过12.58%,能够比较准确的预测现场冲击波超压峰值;③短时傅里叶变换结果表明,横通道内冲击波信号主频为低频,能量随着频率的升高呈现出波动下降趋势。 通过竖井横通道炸药爆炸试验,分析实测冲击波数据特征,对于研究受限空间内爆炸冲击波的传播规律具有借鉴意义。
英文摘要:
      In order to study the law of explosion shock wave propagation in confined space, an exposed charge explosion field test was conducted on the No.1 shaft cross channel of Shandong Lunan Station of Qingdao Metro Line 8. The explosive shock wave parameters of No.2 rock emulsion explosive (0.2 kg, 0.3 kg and 0.4 kg) were collected by using NUBOX-9100 transient signal measuring instrument and equipped sensors, and the waveform and overpressure peak of the measured shock wave signal were analyzed, and the short-time Fourier transform of the shock wave signal was performed. The results show that, ①When the exposed charge explodes in the cross channel, the pressure at each observation point rises rapidly to the maximum value, followed by oscillation attenuation. ②The shock wave peak pressure correction formula is fitted from the measured data, and the error with the measured data does not exceed 12.58%, which can accurately predict the peak overpressure of shock wave. ③The short-time Fourier transform results show that the main frequency of the shock wave signal in the cross channel is low frequency, and the energy shows a downward trend with the increase of frequency. Analyzing the characteristics of the measured shock wave data through the explosion test of the shaft cross channel, it is of reference significance for studying the propagation law of explosion shock wave in confined space.
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