铁路既有线扩堑深孔水压爆破  

DEEP-HOLE WATER-PRESSURE BLASTING FOR CUTTING EXPANSION OF EXISTED RAILWAY LINE

作　　者：何广沂 庞守献 张英杰 李晓波 雷佩鍚 

机构地区：[1]铁道建筑研究设计院,北京102600 [2]中铁十一局集团一公司,湖北襄樊441104

出　　处：《工程爆破》2004年第4期56-60,共5页Engineering Blasting

摘　　要：深孔水压爆破用于铁路既有线扩堑 ,不但节省炸药 ,保护环境 ,而且爆破岩石块度小 ,有利于清方。在边坡较缓、开挖深度较浅的情况下 ,只要对爆破体进行覆盖 ,可以不架设阻挡飞石的钢管排架。本文介绍了不架设排架的条件下深孔爆破的炮孔布置、单孔药量计算、起爆方法和安全防护等 。Use of deep-hole water-pressure blasting for cutting expansion of existed railway line can not only save explosive amount and protect the environment,but also result in small fragments favorable to loading and hauling.In the condition of shallow excavation,it is possible that a steel-pipe bent for prevention of flying rocks is unnecessary to be set so long as the charged holes are covered.This paper introduces the drilling pattern,calculation of one-hole charge weight,initiating method and safety precautions in deep-hole water-pressure blasting without the steel-pipe bent,emphasizing charging structure and blasting result.

关 键 词：铁路既有线 扩堑 深孔水压爆破 装药结构 

分 类 号：U215.2[交通运输工程—道路与铁道工程] U215.3