铁道科学与工程学报2018，Vol.15Issue(1)：163-169,7.
液态CO2相变破岩技术在地铁基坑开挖中的应用
Application of liquid CO2phase change rock breaking technology in metro foundation pit excavation
摘要
Abstract
In the subway excavation project of hard rock geology, the traditional explosive breaking technology has the problems such as the difficulty of the examination and approval, the high storage and transportation risk, and the difficult control of blasting energy and so on. Aimed at the above problems, the Changsha subway excavation project as the background, the liquid CO2phase change rock breaking technology was used to replace the traditional blasting for rock excavation, rock breaking efficiency and safety were analyzed and monitored. The results show that the liquid CO2phase change rock breaking technology can replace the traditional explosive blasting method in rock breaking efficiency, comply with safety regulations for blasting in safety, and can be used in similar hard rock excavation engineering application.关键词
液态CO2相变破岩/地铁基坑开挖/监测分析Key words
liquid CO2phase change rock breaking/metro foundation pit excavation/monitoring and analysis分类
交通工程引用本文复制引用
李启月,刘小雄,吴正宇,谢晓锋..液态CO2相变破岩技术在地铁基坑开挖中的应用[J].铁道科学与工程学报,2018,15(1):163-169,7.基金项目
国家自然科学基金资助项目(51374243,41372278) （51374243,41372278）
