公路隧道爆破掘进超欠挖的原因分析及施工对策

通过对隧道施工中超欠挖问题的分析和研究,提出了容易造成超欠挖的各项原因,并对这些原因进行分析,通过工程实例所取得的良好效果和经验总结,提出了提高测量放线精度、提高钻孔精度、重视钻爆设计、加强现场施工管理和组织等解决措施.对于提高隧道工程质量、加快施工进度、减少施工成本具有重要的意义.

Analysis and Construction Strategies of Overexcavation in Highway Tunnel Blasting

Through the analysis on overexcavation in highway tunnel blasting,it proposes many reasons which caused the overexcavation.Under the good results and experiences conclusion of some engineering examples,the paper gives relative measures to solve the problem,such as increasing the accuracy of survey line and drilling,paying attention to drilling and blasting design,improving management and organization of on-site construction.