复杂环境下地铁明挖深基坑的爆破施工

Deep Pit Blasting in Metro Construction under Complex Environment

南京地铁孝陵卫车站基坑开挖工程的石方工程量大,环境复杂,工期紧,采用中深孔分阶分段微差松动爆破方案,可以充分发挥大型机械设备的优势。在爆破实施时采取一系列技术安全措施,确保了施工安全和施工进度,取得了良好的社会效益和经济效益。

The excavation works of Xiaolingwei Metro Station in Nanjing is restricted to large quantity of rock engineering,complex environment and tight time limit, the use of sub-bands and sub-millisecond loose blasting program in medium-deep hole could play the advantages of large-scale machinery and equipment, the implementation of a series of technical safety measures will ensure the construction. The author argues that this program has construction progress, and has achieved good social and economic benefits.