广西地震台网数字记录爆破事件典型特征分析
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
分析了2008—2012年广西地震台网数字爆破事件数字记录波形典型特征,结果表明:广西地区爆破的时间分布具有明显规律性,优势分布在中午与下午,晚上基本上不进行爆破作业,爆破地点固定。广西地震台网记录到的爆破发生在龙滩水库、扶绥昌平、南宁双定的采石场,龙滩水库的爆破震级分布主要在ML0.0~0.9,扶绥昌平、南宁双定的爆破震级分布主要在ML1.0~2.3之间,强度较低。广西地区爆破产生的P波方向呈四象限向上分布,爆破持续时间短、衰减快,S波周期较大且发育好,与天然地震波形存在明显的区别。正确识别爆破事件,对判断地震和爆破信号具有参考价值。
The paper analyses the typical characteristics of blasting events recorded by Guangxi seismological network during 2008 and 2012. The results show that the temporal distribution of blasting in Guangxi region have obvious regularity, which mainly occur after the duty on noonday and afternoon in fixed place, and hardly ever occur in night. Blasting events recorded by Guangxi seismological network mainly occurr in Longtan reservoir,Fushui-changping, Nanning-shuangding. Magnitude of blasting in Longtan reservoir are mainly ranged from 0.0to 0.9(ML, below identical), magnitude of blasting in Fushui-changping, Nanning-shuangding are mainly ranged from 1.0 to 2.3. Direction of P wave generated by blasting with short duration and fast attenuation in Guangxi region is upward distribution with four quadrants. Period of S wave with good development is larger,which is obviously different from natural seismic waveform. Correct identification of blasting events can provide some reference for the judgement of earthquakes and explosions signal.
引文
[1]杨选辉,沈萍,刘希强,等.地震与核爆识别的小波包分量比方法[J].地球物理学报,2005,48(1):148~155
    [2]杨桂芬.澜沧~耿马地震的S波偏振及P波、S波振幅比变化特征[J].西北地震学报,1991,13(3):38-43
    [3]包翠玲.天然地震波形与工业化爆破波形振幅比对比的研究[J].内陆地震,2007,21(3):267~273.
    [4]包淑娴.天然地震和人工爆破波形特征对比分析[J].华北地震科学,2011,29(1):15-19.
    [5]姚宏.广西区域数字地震台网建设与发展[J].华南地震,2011,31(4):29-38.
    [6]孟晓春,侯玉昆.地震观测与分析技术[M].地震出版社,1998:99~100
    [7]孟晓春,沈启兴,何振德,等.地震信息分析技术-普通高等教育“十五”国家级规划教材[M].地震出版社,2005:20~22.
    [8]张帆,朱新运,熊丹,等.基于非线性时频分析的地震和爆破识别[J].华南地震,2014,34(1):56-63.
    [8]姚宏,郭培兰,龙政强,等.广西南丹大厂矿区地震活动特征分析[J].地震,2011,31(3):112~119.
    [9]张萍,高艳玲,肖健,等.辽宁台网记录爆破、矿震与地震的识别[J].地震地磁观测与研究,2001,22(5):29~34.
    1龙安明,姚宏,陈鑫,等.龙滩水电站水库诱发地震监测预测系统设计报告,广西地震局,2003.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心