工程爆破地震安全问题
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摘要
本文论及与工程爆破地震安全有关的问题，主要包括瀑破地震动衰减规律、爆破地震动与爆破减震设计、分段爆破与地震动叠加、爆破地震动持续时间等。与安全相关的爆破地震动参数主要包括地震动幅值、频谱和持续时间等。为减小爆破地震的影响，爆破减震设计常采用分没爆破和预裂爆破的方法。分段爆破会产主地震动的叠加，叠加系数直接关系到等效药量的计算。瀑破地震动持续时间与叠加系数的关系甚大，对持续时间的试验与研究对爆破减震设计和工程安全都是有价值的。
Some problems on safety in blasting practice are discussed in this paper,mainly including the attenuation law of ground motion in blasting operation,ground motion in blasting and blasting isolation design,sectional blasting and superposition of ground motion,and duration of ground motion in blasting.The parameters of ground motion related to safety mainly include amplitude of ground motion,frequency spectrum, duration of ground motion,etc,In order to reduce the influence of ground motion in blasting,the sectional blasting and pre-fracturing blasting technology is usually used for blasting solation design. The sectional blasting will produce superposition of ground motion The superposition factor is directly related to the calculation of equi-valent amount of explosive. The duration of ground motion in blasting is losely related to the superposition factors.The research on duration of ground motion is valuable for blasting isolation design and engineering safety.
Some problems on safety in blasting practice are discussed in this paper,mainly including the attenuation law of ground motion in blasting operation,ground motion in blasting and blasting isolation design,sectional blasting and superposition of ground motion,and duration of ground motion in blasting.The parameters of ground motion related to safety mainly include amplitude of ground motion,frequency spectrum, duration of ground motion,etc,In order to reduce the influence of ground motion in blasting,the sectional blasting and pre-fracturing blasting technology is usually used for blasting solation design. The sectional blasting will produce superposition of ground motion The superposition factor is directly related to the calculation of equi-valent amount of explosive. The duration of ground motion in blasting is losely related to the superposition factors.The research on duration of ground motion is valuable for blasting isolation design and engineering safety.
引文
1冯叔瑜．大量爆破设计与施工．北京：人民铁道出版社，1965．2张雪亮，黄树棠．爆破地震效应．北京：地展出版社，1991．3中华人民共和国国家标准GB6722－86，爆破安全规程．国家标准局，1986，08，22．4吕桂林，赵纯青．断层构造对地反动的影响，强震观测学术研讨会论文集．北京：地震出版社，1994。5于双久等．8402地下核爆破地震效应的观测与分析，核爆破地震效应观测研究文集，1992．
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