Control And Analysis Of Blasting Effect On Adjacent Tunnel Engineering

Abstract:with the Increasing promotion of the drill-and-blast construction underground space engineering, it will inevitably lead to damage and impact to adjacent building and structures under blast load. To carry on control and Analysis of Blasting Effect on Adjacent Tunnel Engineering has the important value on engineering application.In this article, in reference to a lot of literature and related to engineering data,which is based on a certain tunnel engineering, analyze the effect of adjacent tunnel under blasting construction on new tunnel. The main research contents and results as follows:(1)Through the study of field measured blasting vibration data with regression analysis using least squares method, values, such as K and a of Sadaofusiji formula, concerning different rock, are obtained.(2) Analysis of the main influential factors of blasting vibration velocity in tunnel is performed by using Network Analysis and Grey Correlation Method, after which the weighed correlations of the influencing factors are calculated before the ranking of factors based on grey correlation.(3) After designs of orthogonal experimental programmers, the three factors including the maximum charge, ground zero distance and elevation differences are analyzed before blasting vibration control measures is proposed.