铜陵监狱石料厂爆破地震效应监测与影响分析  

MONITORING AND IMPACT ANALYSIS OF SEISMIC EFFECTS OF MINE BLASTING IN TONGLING PRISON STONE FACTORY

作　　者：吴密 龙剑锋[2] 谢石文[2] 郭延娜 WU Mi;LONG Jian-feng;XIE Shi-wen;GUO Yan-na(Tongling Seismological Bureau,Tongling 244000,Anhui,China;Anhui Earthquake Agency,Hefei 230031,Anhui,China;Tongling City Yuejiang experimental primary school,Tongling 244000,Anhui,China)

机构地区：[1]安徽省铜陵市地震局,安徽铜陵244000 [2]安徽省地震局,安徽合肥230031 [3]铜陵市悦江实验小学,安徽铜陵244000

出　　处：《内陆地震》2024年第3期265-272,共8页Inland Earthquake

摘　　要：采用地震专业仪器全面真实地获取爆破监测数据,以期为爆破效应的科学分析提供直接和客观的度量,从中找到与爆破影响有关的因素,并提出风险防范措施。从爆破振速、能量衰减、优势频率等关键参数入手,利用H/V谱比法评估场地反应的影响,采用爆破震级来核实和验算爆破能量,并拟合得到该区域的能量衰减规律,用波形时频分析法得到能量分布和优势频率规律等。综合分析显示,爆破能量、波形高频成分等随着距离增大而快速衰减,仪器烈度在同一栋楼随楼层增高而变大,仪器记录到的优势频率最大波速低于《爆破安全规程》规定,总体上爆破对周边建筑物震害影响较小。研究表明,此次开展爆破地震效应监测与影响分析的方法可行,可用于指导矿山安全生产。In order to provide direct and objective measurement for the scientific analysis of blasting effect,the monitoring data are obtained comprehensively and truly by using seismic professional instruments,and the factors related to blasting effect are found out,and the risk prevention measures are put forward.Starting from the key parameters such as blasting vibration velocity,energy attenuation and dominant frequency,the H/V spectral ratio method is used to evaluate the influence of site response.The blasting magnitude is used to verify and check the blasting energy,and the energy attenuation law in this area is obtained by fitting.The energy distribution and dominant frequency law are obtained by waveform time-frequency analysis.Through the monitoring and analysis of mine blasting,it is concluded that the blasting energy,intensity,velocity and acceleration decrease with the increase of distance.The intensity increases with height on different floors of the same building;The maximum vibration speed recorded by the instrument is lower than that specified in Blasting Safety Regulations;Blasting has little effect on the earthquake damage of the surrounding buildings,but it is necessary to consider the long-term impact of blasting vibration on the self-built brick and earth house,and the long-term impact on the decoration and external tiles of the brick and concrete house.The monitoring test shows that it is feasible to develop the method of seismic effect monitoring and impact analysis of blasting,and the results can be used to guide mine safety production.

关 键 词：爆破 背景噪声 优势频率 频谱分析 

分 类 号：P315.7[天文地球—地震学]