改善红砂岩爆破破碎效果的几种方法SEVERAL METHODS OF IMPROVING FRAGMENTATION FOR RED SAND ROCK
戚金;
QI Jin(The Fifth Prospective Design Institute of Railways,Beijing 102600,China)
摘要(Abstract)：
通常在路堑石方开挖中采用深孔爆破、浅孔爆破、药壶爆破、竖井爆破四种爆破方法。本文根据笔者的实践经验,分析影响红砂岩破碎度的主要因素,提出了改善四种爆破方式破碎效果的适用方法,并结合实际对这几种爆破方式进行了综合比较。通过实践可知,无论采用哪种爆破方法,只要爆破参数选择合理、措施得当,均可取得良好的破碎效果。
In excavation of cubic meter of stone,commonly the following four blasting methods are adopted,i.e.deep hole blasting,shallow blasting,springing blasting and well blasting.In this paper the author,based on his practical experience and the analysis of the leading factors work on the fragmentation degree,suggested upgrading blasting methods of the four commonly used ones to improve the blasting fragmentation.The four upgraded blasting methods were compared through taking into the consideration of blasting practice.Blasting practice showed that good fragmentation effect could be reached through any one of the four methods provided that the reasonable parameters and suitable measures were taken.
关键词(KeyWords)：
石方开挖;爆破;红砂岩;破碎效果
Excavation of rock;Blasting;Red sand rock;Fragmentation effect
基金项目(Foundation):
作者(Authors):
戚金;
QI Jin(The Fifth Prospective Design Institute of Railways,Beijing 102600,China)