... distance to neighboring buildings, in a densely populated area, demanded attention to vibration velocity, air impact and flyrock. This article describes the technique employed in the blasting plans, which were carried out successfully. 1 INTRODUCTION The passage of the TBM through Jardim de Alah...

... to rock mass excavations in urban areas, two types of factors have been used: Environmental Risk Vibration Factor (Er) Structural Risk Vibration Factor (Sr) The first one is defined by the ratio of a mea- sured vibration velocity at a point submitted to a given excavation action (Vm...

... metals & mining velocity sensor regress analysis operational safety vertical shaft structural geology Engineering layout on-site test vibration velocity velocity-time curve equivalent charge vibration monitor sensor radial vibration velocity Reservoir Characterization...