基于事故树模型的航道爆破振动风险辨识与对策研究

Research on Risk Identification and Countermeasures of Channel Blasting Vibration Based on Accident Tree Model

目前国内高度重视运河等水利设施建设,在建设过程中采取的最多的破岩方式依然是爆破。针对桂江航道水下爆破工程进行了较为全面的爆破危害分析,建立爆破振动事故树模型,分析得出最小割集16个,最小径集4个,对基本事件的结构重要度进行了排序。得出结论:建(构)筑物自身因素和未采取减振措施是产生爆破振动事故的主要因素,并针对性地提出了爆破振动事故的预防措施,为今后的水下爆破作业提供了一定的参考。

Currently,China attaches great importance to the construction of water conservancy facilities such as canals,and the most commonly used rock breaking method during the construction process is still blasting.A comprehensive analysis of blasting hazards was conducted for the underwater blasting project in the Guijiang River channel,and a blasting vibration accident tree model was established.The analysis identified 16 minimum cut sets and 4 minimum path sets,and ranked the structural importance of basic events.Conclusion:The main factors causing blasting vibration accidents are the inherent factors of the building(structure)and the lack of vibration reduction measures.Targeted preventive measures for blasting vibration accidents have been proposed,providing a certain reference for future underwater blasting operations.