高速铁路桩基爆破掘进技术改进方法探析  

Analysis of technical improvement methods for high speed railway blasting excavating pile foundation

作　　者：赵成龙 

机构地区：[1]中铁十九局集团第二工程有限公司,黑龙江哈尔滨150001

出　　处：《佳木斯职业学院学报》2015年第2期331-331,共1页Journal of Jiamusi Vocational Institute

摘　　要：在高速铁路桩基人工挖孔掘进施工中,采用传统的爆破方法,炮眼利用率低,η=55%,单纯增加装药量,仅使爆破的岩石块度变小,整体效果并不明显。鉴于此,提出"螺旋掏槽"结合"分层装药"的爆破技术。应用此技术,在硬韧岩石竖巷爆破中取得了较好的爆破效果。The artificial dig-hole pile foundation of high speed railway construction takes the traditional blasting method, blast hole utilization rate is lowt η = 55% simply increase the explosive load, only make smaller degree of rock blasting, the overall effect is not obvious. In view of this, put forward ＂spiral cut＂ combination of ＂stratified charge＇ blasting technology. Apply this technique in hard tough rock blasting in vertical achieved and good blasting effect.

关 键 词：爆破技术 螺旋掏槽 分层装药 人工挖孔 

分 类 号：U238[交通运输工程—道路与铁道工程]