房建施工花岗岩基础浅孔松动爆破技术应用

Application of shallow hole loose blasting technology in granite foundation of building

随着建筑施工向地质施工困难区域扩张,施工方式有了较大变化。在辽宁省岫岩县某建设项目施工实例中,对基坑开挖中的大体量花岗岩进行爆破清除。经过对振动波及振动频率的计算,确定爆破方案,通过方案优化,在保证周边人员、建筑、管线安全的情况进行浅孔松动爆破,实现了节约工期,降低成本。本文总结了施工中的质量要点。

As the construction extends to the difficult geological construction area,construction methods change greatly.In a construction project in Xiuyan,Liaoning,the large granite in the excavation of foundation pit is removed by blasting.Through the calculation of vibration and vibration frequency,the blasting plan is determined.Through the plan optimization,the shallow hole loose blasting is carried out under the condition to ensure the safety of surrounding personnel,buildings and pipelines,which realizes the saving of construction period and cost.This paper summarizes the key points of this construction case.