肖以杰,张林,刘宏刚
XIAO Yi jie 1,ZHANG Lin 1,LIU Hong gang 2 (1 Guizhou Highway Engineering Corporation,Guiyang 550008,China;*"2 The 3rd Engineering Bureau Group Co Ltd ,China Railway Engineering Corp ,Taiyuan 030001,China)

• 1:贵州省公路工程总公司
• 2:贵州省公路工程总公司
• 3:中国铁路工程总公司第三工程局集团有限公司 贵阳550008
• 4:贵阳550008

摘要(Abstract)：

在石方路堑开挖施工中 ,采用硐室加预裂一次爆破成型综合爆破技术 ,可以解决以往硐室爆破难以解决的边坡稳定和边坡质量问题。这项技术能有效地改善主体石方爆破效果 ,降低工程成本 ,同时达到不清底不刷坡一次成型目的。文中介绍了设计方法和施工工艺 ,并概述了一次成型综合爆破技术的机理 ,此外还探讨了地质构造对爆破作用的影响和预裂缝宽度对一次成型技术的影响
In excavation of rock cut,the blasting technology combined chamber blasting with presplit blasting for once through shaping of slopes can be used for well solving the problem on the stability and quality of a slope which is difficult to be solved by use of conventional chamber blasting in the past This technology can effectively improve the blasting effect to dominant rock excavation,without clearing of slope toe and leveling of slope front,thus lowering the cost of the project In this paper,the design method and constructing process are introduced and the mechanics of the combined blasting technology is outlined In addition,the influence of geological discontinuities on blasting effect and the impact of the presplit fissure's width on once through shaping of slopes

关键词(KeyWords)： 硐室爆破;预裂爆破;深孔爆破;边坡稳定;路堑开挖
Chamber blasting; Presplit blasting; Deep hole blasting; Slope stability; Cut excavation

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 肖以杰,张林,刘宏刚
XIAO Yi jie 1,ZHANG Lin 1,LIU Hong gang 2 (1 Guizhou Highway Engineering Corporation,Guiyang 550008,China;*"2 The 3rd Engineering Bureau Group Co Ltd ,China Railway Engineering Corp ,Taiyuan 030001,China)

参考文献(References)：

• 〔1〕杨广渊实用土木工程手册(第三版)[M ]北京:人民交通出版社,1999
• 〔2〕杨庭林,肖以杰,吴承辉,刘宏刚溶洞对工程爆破的影响及其对策[J]爆破,2000,17(专辑):218-221
• 〔3〕刘殿中工程爆破实用手册[M ]北京:冶金工业出版社,1999