高速公路石方路堑爆破开挖工法研究  

Research of Blasting for Highway Rock Cuts

作　　者：孔榜 黄槐轩 程康[4] 

机构地区：[1]湖北省谷竹高速公路建设指挥部,湖北十堰442100 [2]湖北省随州市曾都公路段,湖北随州443040 [3]湖北省交通投资有限公司总指挥部办公室,武汉430030 [4]武汉理工大学土木工程与建筑学院,武汉430070

出　　处：《土工基础》2014年第3期120-122,共3页Soil Engineering and Foundation

摘　　要：分析了目前高速公路路堑爆破开挖施工方法,提出了岩石路堑爆破开挖必须综合考虑岩性、地形地貌和周围环境状况,采用优化的爆破施工方法。参照隧道围岩的分级方法,对路基岩石进行了分级探讨,坚硬岩石采用预裂爆破,软岩采用预留保护层进行光面爆破等技术措施,避免对边坡产生破坏,控制爆破飞石、爆破振动对周围行人和建筑物的影响。This paper summarizes the different blasting methods use in the highway rock cuts. It is suggested that the rock cutthrough blasting should consider the rock mass classification, topography and the adjacent environment so that the blasting de-sign can be optimized. The highway rock mass classification method has been discussed. The pre-split technique is appropriatefor the hard rock mass, whereas, the smooth blasting with a protective layer is more applicable to the soft rock mass to avoidthe adverse effect on the cut slope. The fly rock due to the blasting, vibration impact on the adjacent pedestrians and structuresshould also be controlled and mitigated.

关 键 词：高速公路 坚硬岩石 软岩 保护层 爆破振动 

分 类 号：U418.8[交通运输工程—道路与铁道工程]