王快水库溢洪道闸室爆破拆除  

BLASTING DEMOLITION OF THE FLOODGATE IN THE SPILLWAY OF WANGKUAI RESERVOIR

作　　者：刘治峰 李保林 郭永为 张永哲[2] 

机构地区：[1]河北省水利工程局,石家庄050021 [2]中国水利水电科学研究院,北京100044

出　　处：《工程爆破》2004年第2期38-42,共5页Engineering Blasting

摘　　要：王快水库溢洪道闸室包括高堰、低堰、底孔及工作桥、交通桥等。这些构筑物形状特殊,结构复杂,钢筋密集。闸墩爆破拆除时,孔深达20m,钻孔精度要求很高。为了减小钢筋笼的夹制作用,预先在某些部位切断钢筋。文中介绍了为顺利拆除各构筑物所做的预处理工作以及选定的主要爆破参数。由于拆除方案设计合理,爆破参数选择正确,成功地将闸室拆除。The reinforced concrete floodgate in the spillway of Wangkuai reservoir consists of the gate dam,piers,bridges and headstock gear buildings.These structures to be demolished have complicated structure and shape,closely spaced rebar.For demolition of out-size piers by drilling and blasting,the boreholes with a depth of up to 20m and very high drilling precision are required.In order to reduce the confined action of steel reinforcement cage,the reinforcing bars in some places are precut off.In this paper,the pretreatment operation conducted for smoothly demolishing these structures,and the selected blasting parameters are introduced.Because of working out a reasonable blasting program and determining correct blasting parameters,the desired results of the demolition blasting were achieved.

关 键 词：闸室 爆破拆除 预处理 深孔爆破 

分 类 号：TU746.5[建筑科学—建筑技术科学]