Study Of Comprehensive Construction Technology About Shock Absorption And Foundation Reinforcementdue To Xi'ao 2nd Tunnel Passing Mei Xian Templeand Cemetery Group

This paper puts forward the research on the safety and rapid construction technology of small pitch,large section,shallow depth,multi-interference and multi-crossing tunnel and puts forward the integrated and rapid construction technology of three-dimensional crossing tunnel in mountainous town which the main purpose is blasting shock and the idea is the reinforcement that part import than overall.Specific research results as follows:(1)The monitoring of the blasting vibration conducted by the tracking construction shows The displacement and displacement acceleration of the existing structures caused by blasting construction have the characteristics of shock recovery with the tunnel blasting continue time.Therefore,it is necessary to reduce the maximum acceleration of the existing building caused by the blasting to control the blasting measures.(2)The part reinforcement of the surrounding rock before the tunnel construction and the damping and blasting and the reinforcement in the end and blasting shock design have the great significance in the tunnel blasting and construction safety about surface buildings.(3)For the different small cross-section tunnels,the Structural force and the vibration response have advantageous in the situation of excavation of large cross-section tunnel first and excavation of small cross-section tunnel next.But at this time the surface of lining structure has the greatest impact by the tunnel blasting.So the blasting vibration response at this position needs to be measuredduring construction(4)On the basis of blasting shock absorption,this paper put Forward to the three-dimensional protection technology for blasting construction in shallow buried tunnel and form a set of judge method about safe and fast construction technology of tunnel under the existing building and surface building vibration effects.