Abstract
Combining with the blasting test of an under-construction tunnel, this paper optimizes the overall blasting construction scheme. The optimized blasting scheme is used in the site construction test and the peak particle vibration velocity is strictly controlled under working conditions through blasting vibration monitoring to ensure the safety of surrounding buildings and structures in the construction process. The corresponding control measures are proposed to reduce the blasting vibration which brings certain guiding significance to the following construction project.
Highlights
With the development of transportation industry in our country, there will be shallower and shallower tunnel projects going through downtown area, under the restriction of engineering and geological conditions, the tunnel blasting method is adopted in most of the construction
During the excavation of shallow buried tunnel, the excessively conservative blasting vibration control measures will undoubtedly meet the requirements of safety production
Based on the above factors, this paper optimizes the blasting construction scheme combined with the shallow buried tunnel blasting test in a certain city and controls the harm of blasting vibration on the surface buildings
Summary
With the development of transportation industry in our country, there will be shallower and shallower tunnel projects going through downtown area, under the restriction of engineering and geological conditions, the tunnel blasting method is adopted in most of the construction. Compared with other blasting project, the tunnel blasting construction carried out in shallow buried depth always has closer distance from the explosion source to ground building (structure), which made the blasting vibration problem become more prominent and increase the difficulty and risks of construction blasting. During the excavation of shallow buried tunnel, the excessively conservative blasting vibration control measures will undoubtedly meet the requirements of safety production. This is bound to cause large increase in construction costs and dramatically reduce the efficiency of construction, and from the economic point of view, it is extremely unreasonable. Based on the above factors, this paper optimizes the blasting construction scheme combined with the shallow buried tunnel blasting test in a certain city and controls the harm of blasting vibration on the surface buildings
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