比邻轻轨高架车站的石方控制爆破  

Controlled Blasting of Stonework in Neighboring Light Rail Elevated Station

作　　者：孙永 李健飞 SUN Yong;LI Jian-fei(The Fourth Engineering Co.,Ltd.of China Railway 14th Bureau Group,Jinan Shandong 250002,China)

机构地区：[1]中铁十四局集团第四工程有限公司,山东济南250002

出　　处：《西部探矿工程》2021年第7期1-3,6,共4页West-China Exploration Engineering

摘　　要：沙特麦加轻轨高架车站北侧紧邻山体,按照工程要求对山体进行松动爆破时难免产生落石或是滚石,使轻轨高架车站的桥墩墩身的安全存在隐患。紧邻车站的爆破区域,通过优化起爆顺序,按照先预裂孔后主爆孔的方法进行爆破,并在桥墩墩身下部靠近爆破区域一侧安装防护木方,有效地降低了爆破对高架车站的有害影响。The north side of Mecca light rail elevated station in Saudi Arabia is close to the mountain.When the mountain is loos-ened and blasted according to the engineering requirements,it is inevitable to produce falling rocks or rolling stones,which will cause hidden dangers to the safety of the pier body of the light rail elevated station.In the blasting area close to the station,by optimizing the blasting sequence,the blasting is carried out according to the method of pre splitting the hole first and then the main blasting hole,and protective timber is installed at the side near the blasting area at the lower part of the pier body,which effectively reduces the harmful impact of blasting on the elevated station.

关 键 词：控制爆破 起爆顺序 防护 

分 类 号：TV542[水利工程—水利水电工程]