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| 华北地区矿山爆破活动的时空特征 | |
| 引用本文： | 赵爱华,郭永霞,孙为国,杨立强,刘哲.华北地区矿山爆破活动的时空特征[J].地球物理学进展,2012,27(3):917-923. |
| 作者姓名： | 赵爱华 郭永霞 孙为国 杨立强 刘哲 |
| 作者单位： | 1. 中国地震局地球物理研究所,北京,100081 2. 中国地质大学地质过程矿产资源国家重点实验室,北京,100083 3. 民政部国家减灾中心,北京,100053 |
| 基金项目： | 国家自然科学基金，中央国家级公益事业单位基本科研业务费重大计划专项 |
| 摘 要： | 矿山爆破作为地震信号源具有经济方便的优点,但作为企业行为,有其自身的活动特性.华北地区矿产资源丰富,矿山爆破活动频繁.为有效利用这些爆破开展地震学研究,基于北京数字遥测地震台网2006年1月至2010年12月的爆破事件目录,分析了华北地区的爆破活动特征.该区的爆破活动在空间上分布广泛,但爆破密度和强度不均.对地震学研究... |
| 关 键 词： | 华北地区 矿山爆破 时空特征 地震效应 地震学 |
Spatio-temporal characteristics of mine blast activity in North China |
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| ZHAO Ai-hua , GUO Yong-xia , SUN Wei-guo , YANG Li-qiang , LIU Zhe.Spatio-temporal characteristics of mine blast activity in North China[J].Progress in Geophysics,2012,27(3):917-923. | |
| Authors: | ZHAO Ai-hua GUO Yong-xia SUN Wei-guo YANG Li-qiang LIU Zhe |
| Institution: | 1.Institute of Geophysics,China Earthquake Administration,Beijing 100081,China; 2.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Beijing 100083,China; 3.National Disaster Reduction Center of China,Beijing 100053,China) |
| Abstract: | Mine blasts can be used as an economical and convenient type of seismic sources.However,as commercial conduct,the mine blast has its own activity manners,which are important for effectual seismological observations of large blast events.In this paper,we make a statistical analysis of mine blasts between January 2006 and December 2010 in North China,based on the non-earthquake catalogs by Beijing Digital telemetry Seismic Network.Their spatial distribution is wide,but not uniform in density and intensity.Concerned with blasts with magnitude ML≥2.0,there are three obvious belts including Sanhe-Qian’an,Fangshan-Xingtang-Pinglu and Laiyuan-Datong.The blasting activity is affected by many factors for its economic and risky properties,and varies remarkably at the annual scale.It maintains a quite high level in 2006 and 2007,but sharply reduces in 2008,and then gradually increases until 2010.The blasting seasonality is not very strong.Relatively,the activity is low in February and October.The daily distribution of blast shows no distinct variations but the hourly one shows obvious rush hours.Its highest peak for each year consistently occurs between 12 and 13 o’clock,and the secondary active time interval is from 17 to 20 o’clock.As for the seismic effect induced by mine blasts,the number of available seismic records from an event varies much for the same magnitude.Its maximum is basically proportionate to the latter.The blasting activity characteristics can be used as a guide to the seismological observation of large mine blasts in North China. |
| Keywords: | North China mine blast spatio-temporal characteristics seismic effect seismology |
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