土工基础

›› 2014, Vol. 28 ›› Issue (3): 138-140.

• 工程实录 • 上一篇    下一篇

高速公路隧道掘进水封爆破技术试验研究

黄槐轩1，程 康2   

  1. （1.湖北省交通投资有限公司总指挥部办公室，武汉4 30030；2.武汉理工大学土木工程与建筑学院，武汉 430070）
  • 收稿日期:2014-02-27 出版日期:2014-06-20 发布日期:2014-06-28
  • 作者简介:黄槐轩（1963-），男，高级工程师，研究方向为高速公路技术管理。

Application of Blasting by Hydraulic Pressure and Water Seal in the Highway Tunnel Excavation

HUANG Huaixuan1, CHENG Kang2   

  1. （1.General Headquarter Office, Hubei Provincial Transportation Investment Co., Ltd., Wuhan 430030；
    2.School of Civil Engineering and Architecture,Wuhan University of Science and Technology, Wuhan 430070）
  • Received:2014-02-27 Online:2014-06-20 Published:2014-06-28

摘要： 高速公路隧道掘进中，会产生大量的粉尘和有害气体，对施工人员的身体健康会造成较大的伤害。采用了水袋子进行爆孔堵塞的试验，利用水袋子瞬间爆炸产生的水雾，稀释爆破掘进中的粉尘和有害气体。试验中采用炮孔端部、底部加端部、以及中间加端部等三种不同位置放置水袋子，结果表明加放水袋子的爆破，粉尘和有害气体含量明显减少，炮孔中间加端部加放水袋子的装药结构效果最为明显。粉尘量减少30%~35%，炮孔利用率提高4%~9%，表明该技术有较大的社会意义和推广应用价值。

关键词: 水封爆破, 隧道, 粉尘

Abstract: Large amount of dusts and poisonous gases generated during the excavation of highway tunnels have a significant adverse impact on the safety d heath of the tunnel construction personnel. This paper presents the results of using water bags as sealing of the lasting holes. The water fog generate from the blasting dilutes and absorbs the dusts and gases. Different locations of the water bags in the bore holes are tested and their effects are compared: bottom, bottom & top, and middle & top. All results show that the water bags are effective in dust and poisonous gas reduction. The most effective water bags locations are middle and top of the bore hole, where the dust reduction is between 30% and 35% and the blasting holes has a 4 to 9% improvement in the utilization.

Key words: Blasting with Water Seal, Tunnels, Dusts