VIBRATIONS OF THE GROUND SURFACE AT BLASTING WORKS ON THE CONSTRUCTION OF TUNNELS

This work examines vibrations of the ground surface at blasting work on the construction of tunnels. To estimate the levels of vibration of the ground surface under explosive action inside a cylindrical cavity, to a first approximation we consider the plane problem of the theory of elasticity. As a result of this impact, longitudinal and transverse waves will propagate in the soil. To solve the problem, the reciprocity theorem is applied, for dynamic problems of the theory of elasticity, and the results obtained are compared by wave dynamics methods. The main goal of the work is to determine the stressed deformed state of pipelines under the influence of seismic waves. The resulting solution allows us to determine the levels of vibrations of the soil surface that occur during explosive effects inside the cylindrical cavity of the elastic half-space. The results can be used to assess the levels of ground surface vibrations that occur during the construction of shallow tunnels using the drill-and-blast method.