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2008年3月4日在台湾东北部的N3爆破点实施了两次爆破。第一次3000kg炸药的爆破编号为N3P,第二次750kg炸药的爆破编号为N3。为了记录这两次爆破,我们使用了8个三轴旋转传感器、13个三轴加速度计以及12个装有全球定位系统接收器的6通道24位数据记录仪在爆破前后几小时进行连续观测。这些仪器安装在距离爆破点250m(1个台)、500m(11个台)、600m(1个台)的地方,其中距离爆破点500m的11个台站形成了台站间距约为5m的中心台阵。除一个旋转传感器外,都得到了量程内的记录。尽管N3P爆破使用的炸药是N3爆破的4倍,但是13个台站记录的N3P爆破的平移加速度和旋转速度的峰值却只有N3爆破的1.5倍。在台站间距大约5m的中心台阵的记录中,我们还发现平移加速度和旋转速度变化很大(百分之几十)。N3P和N3爆破的最大峰值旋转速度分别为2.74mrad/s和1.75mrad/s。本文的主要目的是报告台湾这两次爆破的旋转和平移运动记录,并在网上发布以开放访问。Langston等(2009)已经对本次试验的平移加速度数据进行了分析,我们计划未来发表一篇关于分析旋转速度数据的文章。
On March 4, 2008, two explosions were carried out at the N3 blast point in northeastern Taiwan. The first explosion of 3000kg explosives number N3P, the second burst of 750kg explosives number N3. To record these two explosions, we used eight three-axis rotary sensors, 13 three-axis accelerometers, and 12 6-channel 24-bit data loggers with GPS receivers for continuous observation hours before and after blasting. These instruments were installed at a distance of 250m (1 station), 500m (11 stations) and 600m (1 station) from the blasting point. Eleven stations with a distance of 500m from the blasting point formed a center with a station spacing of about 5m Array. In addition to a rotation sensor, have been recorded within the range. Although N3P blasting used four times as much explosives as N3 blasting, the peak translational and rotational speeds of N3P blast recorded by 13 stations were only 1.5 times that of N3 blasting. We also found that the translational acceleration and rotational velocity vary widely (tens of percents) in the central array recording about 5 m apart. The maximum peak rotational speeds of N3P and N3 blasting are 2.74 mrad / s and 1.75 mrad / s, respectively. The main purpose of this paper is to report the rotation and translation movements of these two explosions in Taiwan and publish them online for an open visit. Langston et al. (2009) have analyzed the translational acceleration data for this experiment and we plan to publish an article on the analysis of rotational velocity data in the future.