爆破器材2013，Vol.42Issue(1)：35-38,4.DOI:10.3969/j.issn.1001-8352.2013.01.010
深孔爆破技术在板肋石拱桥爆破拆除中的应用
The Application of Deep-hole Blasting Technology in the Blasting Demolition of Ribbed Slab Stone Arch Bridge
毛益松 1王升 2单志国 2汪庆桃 1李晓阳2
作者信息
- 1. 国防科学技术大学九院 湖南长沙,410073
- 2. 湖南长工工程建设公司 湖南长沙,410003
- 折叠
摘要
Abstract
This study presents the blasting demolition scheme, the blasting parameters design and the blasting damage control of the 382m long Egret Bay Ribbed slab stone arch bridge in Zhangjiajie City. Considering the larger diameter of 3-5 meters of the pier column and the alignment of intensive steel bars within the bent cap as the main bearing part, the geological drilling rigs equipped with the alloy core drills were used to demolish the reinforced concrete of bent cap in the drilling operation and then replaced by the caterpillar down-the-hole drill to accomplish the subsequent drilling process for the pier column. The employed method can successfully overcome the difficulties which may arise in lateral drilling of the pier column due to the high water level. Deep-hole blasting technology has no impact on the surrounding buildings and the base of downstream hydropower station when v = 1.430cm/s and pm = 0. 013MPa were chosen via safety checking calculation.关键词
深孔爆破/板肋石拱桥/拆除爆破/微差爆破Key words
deep-hole blasting/ribbed slab stone arch bridge/blasting demolition/millisecond blasting分类
建筑与水利引用本文复制引用
毛益松,王升,单志国,汪庆桃,李晓阳..深孔爆破技术在板肋石拱桥爆破拆除中的应用[J].爆破器材,2013,42(1):35-38,4.
