地下水封石洞储库爆破振动监测与分析

Monitoring and Analysis of Blasting Vibration in Underground Water-sealed Oil Storage Caverns

以烟台万华地下水封石洞液化石油气储库的爆破开挖为研究背景,对地下水封石洞储库爆破振动监测数据进行了分析。以经典的萨道夫斯基经验衰减公式为基础,通过总结前人的研究成果,引入高程差影响因子和高差影响系数,对经典的萨道夫斯基经验衰减公式进行修正,认为当爆源位于测点的正下方时,高差效应最大,当测点与爆源位于同一水平面时,高差效应消失。运用修正的萨道夫斯基经验公式对爆破振动监测数据进行回归分析,拟合精度较高,但是,能否将其作为存在高差效应时的质点振动速度的预测公式尚需更多的工程实践验证。

Taking blasting excavation of Wanhua underground water-sealed oil storage caverns in Yantai, monito- ring data of blasting vibration was analyzed. Based on classic Sadaovsky formula and by summarizing the research a- chievements of predecessors, the elevation difference influence factor and elevation difference influence coefficient was introduced to revise classic Sadaovsky formula. It was considered that the elevation difference effect was the most obvious when the blasting source was below the measuring point and it vanished when the measuring point and the blasting source was in the same horizontal plane. Using the revised Sadaovsky formula, the regression analysis of blas- ting vibration monitoring data was progressed, of which the fitting precision was high. Therefore, it can be taken as the prediction formula of particle vibration velocity when the elevation difference effect exists.