建构筑物周边爆破施工安全控制距离及分析方法研究

Study on safety control distance and its analysis method of blasting construction to the surrounding buildings

为研究在居民区附近开展大面积爆破施工的安全可行性以及安全控制距离标准,采用数值模拟方法,分析了地铁车辆段爆破施工对周边高压线及居民楼的影响,根据分析结果,给出了安全控制距离及关键控制指标,说明采用数值模拟的方法适用于类似工况的可行性。另外,研究发现,在居民楼附近进行地铁车辆段爆破施工风险较高,建议在距建构筑物100 m范围内采用静态爆破或机械开挖的方式进行施工。

In order to investigate the safety feasibility of large area blasting construction around the residential areas and the corresponding safety control distance,the influence of blasting construction in metro depot on the surrounding high tension lines and residential buildings was studied by using the numerical simulation method. The safety control distance and key control indexes were obtained according to the analysis results,which illustrates the feasibility of numerical simulation method for the similar conditions. In addition,it showed that the risk of blasting construction in metro depot around the residential buildings is high,and it was suggested to construct by adopting the ways of static blasting or mechanical excavation within100 m range to the surrounding buildings.