The invention discloses a blast construction method of a shallow-buried
railway tunnel in underneath pass of civil house weak segments. The method includes the following steps that a, according to characteristics of the shallow-buried
railway tunnel in underneath pass of the civil house weak segments, a numerical value model is established; b, material parameters corresponding to the numerical value model of the shallow-buried
railway tunnel in underneath pass of the civil house weak segments are selected; c, blasting
simulation of the shallow-buried railway tunnel in underneath pass of the civil house weak segments is performed; d, numerical value
simulation results of different
cutting blasting
modes are analyzed; e, in combination with
engineering measured data of blasting constructionfor the shallow-buried railway tunnel in underneath pass of the civil house weak segments,
verification is performed so that the demands of blasting safety
vibration control standards can be met. By the utilization of a power
finite element method, numerical value
simulation analysis is performed to research the rule of a blasting seism,
verification is performed in combination with the
engineering measured data, and therefore
blasting vibration is reflected accurately to a certain degree. The
blasting vibration reduction effect of a vibration reduction technical scheme is researched, bases are provided for making a vibration reduction blasting scheme for the tunnel in underneath pass of dense civil houses, and influences on the rule of
seismic wave propagation by excavation of the tunnelare researched.