泄洪兼导流洞开挖控制爆破振动监测分析

Monitoring analysis of the control vibration produced byblasting under the excavation of spillway and diversion tunnel

通过对丰满重建工程泄洪兼导流洞开挖过程中布置和埋设振动测点,对施工爆破监测结果进行回归分析,建立了开挖爆破振动传播的数学模型,确定了爆破地震波衰减和传播的规律,提出了满足设计开挖振动强度下的药量控制措施和建议,从而确保了开挖过程中爆破作业以及地面建筑物的安全。

Through the layout and embedment of vibration monitoring points in the excavation process of spillway and diversion tunnel of Fengman reconstruction project and the regression analysis of the monitoring results of construction blasting, the mathematical model of the vibration propagation produced by excavation blasting is established. The attenuation and propagation laws of the blasting seismic wave is determined and the explosive quantity control measures and suggestions are puts forward under the condition of meeting the design intensity of the excavation vibration, which could ensure the safety of the blasting operations and the ground building in the process of excavation.