大断面隧道爆破减孔布设方法研究

综合介绍了国内外露天台阶爆破技术,系统阐述了近年来在台阶爆破设计、计算机辅助设计系统、GPS钻孔定位、预装药等技术方面的新进展,详述了国内外露天矿台阶控制爆破技术在爆破参数设计、钻孔、药包布设、起爆系统、爆破安全、装药机械化以及计算机应用等方面的最新成果。最后,对我国露天矿台阶爆破技术的今后发展方向提出看法。

RESEARCH AND APPLICATION OF BLASTING VIBRATION FREQUENCY CONTROL TECHNOLOGY

Using the control theory of mechanical vibration to study the characteristics of blast spectrum,it was found that the earthquake occurred in delay blasting was caused by the superposition of rock blasting vibration and delay time vibration which were in the different spectrum.The rock blasting oscillating wave was transformed into harmonic wave to analyze by setting the delay explosion oscillating wave as the command fundamental wave,on this base,using the Doppler effect caused by floating epicenter,the mixed frequency was finally synthesized to achieve the frequency shift.According to these,fundamental theory and design methodology of the blast vibration dynamical response control were established and the theory and methodology were successfully applied into geotechnical blasting and demolition blasting.