毗邻地铁4号线及燃气管道爆破控制技术

Blasting Control Technology for Gas Pipeline and Construction Adjacent to Beijing Subway Line 4

结合北京地铁4号线备用站台工程,针对在地质条件、周边环境复杂条件下的爆破施工技术进行总结。施工中在减震沟设置好的情况下,在周边逐孔采用预裂爆破施工,对爆破参数进行反复试验,最终确定适合的爆破参数,从钻孔、装药、填塞、起爆连接等几个主要方面进行安全防护,从而保证工程施工的安全质量和顺利进行。

Combined with the spare engineering platform of Beijing Subway Line 4, the blasting construction technology was summarized under the conditions of geology and complex surroundings. The hole-by-hole pre-splitting blasting construction was conducted on the basis of setting up the damping ditch. After that, the blasting parameters were tested repeatedly to eventually determine the suitable blasting parameters. The security protection was carried out mainly from the aspects of drilling, charging, stuffing and initiating connection, thus ensured the smooth construction and safety quality of the engineering.