露天台阶爆破中合理微差间隔时间的确定  

Reasonable delay time of bench microsecond delay blasting

作　　者：王戈 胡刚[2] 

机构地区：[1]七煤集团新立煤矿,黑龙江七台河154600 [2]黑龙江科技学院科技处,哈尔滨150027

出　　处：《黑龙江科技学院学报》2009年第1期20-22,60,共4页Journal of Heilongjiang Institute of Science and Technology

基　　金：黑龙江省普通高校骨干教师创新能力资助计划(1152G034)

摘　　要：微差爆破技术可以实现良好的岩石爆破效果,最大限度地降低振动影响。针对露天台阶岩石爆破的特殊性,分析了与微差时间间隔技术相关的岩石破碎机理、振动效应及爆破分区状况,利用传统的合理微差间隔时间计算公式,确定微差时间间隔的原则与方法,建立包含3个炮孔间相互作用的几何模型。数值模拟与工程实际结果一致,其合理的排间微差10 ms。The microsecond delay blasting technology gives a better rock blasting effect and the utmost reduction in the blasting vibration. In response to the open-air stair rock demolition particularity, this paper presents an analysis of the rock breaking mechanism, the effect of vibration and the demolition district condition, related to microsecond delay blasting time and introduces the use of traditional reasonable formula for microsecond delay blasting time interval to define the principle and the method of microsecond delay blasting time and establish the mutually acting geometry model with 3 three boreholes. The numerical simulation, consistent with the result of actual project, gives reasonable microsecond delay blasting time of 10 ms.

关 键 词：微差爆破 间隔时间 爆破降震 

分 类 号：TD235.3[矿业工程—矿井建设]