Application of Shallow Hole Blasting Method in Artificial Hole Pile of Weathered Slate in Large Aperture
The 1# rock pile of Zhenjiangguan Station of Chenglan Railway is located in the range of 34#-39# pier of 1# five-line super-large bridge in Zhenjiangguan Station.The lower side of the rock pile is adjacent to the platform beam under construction,and the foot of the slope is close to G213 national high-way.In order to ensure the safety of the pier body,platform beam body,road traffic and construction person-nel around the stone blasting,this paper optimizes the drilling and blasting parameters,adjusts the blasting excavation sequence and blasting direction,adopts the new blasting technology of wide hole spacing and small resistance,limits the amount of blasting charge at one time,and uses the millisecond delay blasting technolo-gy to control the maximum one-stage blasting charge and reduce the blasting vibration.In order to improve the blasting effect,so as to reduce the disturbance to the existing structure and avoid the hidden danger of blasting flying stones to the safety of the surrounding villages and traffic.
high and steep slopecontrol blastingsafe distancesafety measures
万方数据
维普
