Demolition blasting of high medical plaza in complex environment
The Jining Medical Plaza is located in the downtown area,surrounded by a complex of building,adjacent to the city's main road,and with abundant underground pipelines laid on both sides of the road.The surrounding environment is extremely complex.The building is of frame shear wall structure with multiple elevators and pedestrian ladders inside,with a complex structure and pipelines.By closely surveying the surrounding environment,effective preprocessing,and precise design,the building was demolished by directional blasting.Based on the structural characteristics of the plaza,an innovative self-protective method for fly-rock prevention was proposed and applied by reserving the north podium building and sealing its doors and windows.After the explosion,the building collapsed in the predetermined direction,and no surrounding facilities were damaged.The harmful effects of the explosion,especially the fly-rocks,were effectively controlled,and the plaza was successfully demolished.