The results of shot-delay blasting application in aspects of decreasingblasting-shake and ensuring safety of tunnel &drop shaft are discussed.
介绍了孔间、孔内和孔间微差爆破的原理、参数、设计施工要点及在降低爆破震动、保护平硐溜井使用安全方面的应用结果。
This paper describes the technique ways and achievements of large round multi-row short-delay blasting experiments and audies at Shuichang Iorn Mine.
本文介绍了水厂铁矿大区多排微差爆破试验研究的技术途径及成果。
According to a blasting project, this paper discusses the design and implementation of spring microsecond delay blasting in open mines in complicated circumstance.
本文结合工程实例，介绍了复杂环境条件下露天开采药壶微差爆破技术的设计与施工。
The millisecond short delay blasting and pre-treatment are used to guarantee the smooth collapses of dust treatment center station and security of the demolition environment.
被拆除的除灰中心站爆破环境非常复杂，采用毫秒微差爆破和预处理措施，确保了除灰中心站的顺利倒塌和周围建筑物的绝对安全。
According to the "Big Time Delay" and the "Big Over Hanging Beam" principle, the building was successfully demolished through directional blasting.
通过采用“大时差”和“大悬臂梁”原理，对该大楼成功地实施了定向爆破拆除。
The design blasting parameters, blasting net, delay time, defending measure selection and gap length determination in complicated environment are discussed.
探讨在复杂环境条件下爆破参数、爆破网路、延时时间、安全防护措施的选择和爆破切口范围的确定。
According to the time to form the blasting free face and the time for the broken rock flying, the paper discussed the rational delay time of each functional borehole in deep borehole blasting.
根据爆破自由面形成的时间和破碎岩石飞行的时间，探讨了深孔爆破各作用炮眼的合理延期时间；
Through adopting the parallel cut and inverse initiation, and selecting correct delay-interval, an average blasting efficiency of 90% had been achieved.
通过采用含空孔的直孔掏槽方式、反向起爆，并合理选择微差起爆时间，桩井爆破的平均炮孔利用率达到了90 %。
The influence of delay intervals on blasting effects was analyzed, the optimum blasting effects ware reached through optimizing the delay time.
分析了延期间隔对爆破效果的影响，介绍了不同延期间隔阶段的岩体爆破过程，通过综合优化爆破时间，达到最佳爆破效果。
The physical model of cantilever board in bench blasting is firstly presented and based on the hypothesis, a formula for calculating the charge weight in the MS delay bench blasting is also derived.
首先提出台阶岩体爆破的悬臂薄板物理模型，并在此基础上建立了台阶多排微差爆破的炸药量计算公式。
The results show that the blast hole diameter has little effect of the vibration level in production blasting, and the other factors should be considered in large scale delay blast design.
结果表明，除炮孔孔径在实际生产爆破中对振动影响不明显外，其它因素在大区微差爆破的设计中都值得注意。
To determine rational microsecond delay time is both the requirement of ensuring blasting quality and the key to achieve blasting vibration reduction.
确定合理的微差间隔时间，既是保证爆破质量的需要，又是达到爆破降震的关键。
The practice has shown that the initiation delay time is an important factor affecting cut blasting effect.
工程实践表明，微差起爆时间是影响掏槽效果的一个重要因素。
Current situation of study and application of hole-by-hole blasting on mechanism, delay time and effect is analyzed; developing further problems to be solved are given in this paper.
主要从逐孔爆破技术机理、微差时间和爆破效果等方面分析了该技术的研究和应用现状，同时分析了该技术需要进一步解决的问题。
The initiation mode with hole-inner and row-to-row short-delay was used to control blasting vibration.
应用孔内和排间微差起爆方式控制爆破震动。
The initiation mode with hole-inner and row-to-row short-delay was used to control blasting vibration.
应用孔内和排间微差起爆方式控制爆破震动。
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