There are 220kV super-voltage transmission lines and electrification line above the road-cut excavation blasting project, which is near the buildings, the blasting vibration and fly-rocks shall be strictly controlled, thus the blasting design and construction are difficult. This paper describes the controllable blasting technology design of the road-cut excavation in the complex environment, the blasting parameter selection, the detonating network and the safety technology. Practice has proved that the blasting vibration and individual fly-rock can be controlled by the meticulous design and construction as well as reliable safety technology measures under the condition of no cover when urban road-cut excavation blasting is carried out in the complex environment.
Expressway-Urban Road Interconnection Design Strategy
