Tunnel empty-hole mud vibration-reduction-control blasting method capable of reducing vibration and noise

Abstract

The invention relates to a tunnel empty-hole mud vibration-reduction-control blasting method capable of reducing vibration and noise. According to the method, hole drilling is positioned according to a drilling and blasting arrangement diagram; before powder charging, high-pressure air is used for sweeping holes, rock emulsion explosives and non-electric second-delay detonators are respectively selected, the powder charging holes are charged with powder according to a vibration reduction blasting parameter design list, the periphery holes are charged with the powder at intervals, the rest of the blastholes are continuously charged with the powder, the powder are charged to the bottoms of the holes, tamping is used for plugging the holes in place, and the empty holes are filled with plastic bags with mud; and the detonators are connected in place according to requirements, equipment and persons are all evacuated outside the safe distance, and detonation is carried out after the equipment and the persons are confirmed to be safe. The method has the advantages that the hole bottom blasting force can be enhanced, the blasting footage can be increased, particularly, reflection, refraction and absorption of the blasting shock waves can be strengthened, the process of shock wave->attenuating->stress wave->attenuating->seismic wave can be accelerated, the blasting vibration and noise can be greatly reduced, the blasting vibration speed is detected to be lees than 5cm / s, the phenomenon that people are disturbed can be greatly reduced, and the good technical economic effect can be obtained.

Description

technical field [0001] The invention relates to a tunnel hole mud vibration-reduction control blasting technology which can effectively reduce vibration and noise, specifically, it is a construction technology of setting holes in the blasting body and filling them with mud in plastic bags. Background technique [0002] The Daheishan Tunnel is close to a residential area. Due to the high noise and vibration of the blasting construction, it has been obstructed by nearby residents for a long time. The Environmental Protection Bureau has repeatedly issued a document prohibiting night blasting construction, and the progress is very slow. Contents of the invention [0003] The purpose of the present invention is to solve the problems of high noise, large vibration, and serious disturbance to the people during blasting construction, and propose a vibration-reduction control blasting technology that can effectively reduce blasting vibration and noise. The remaining length of the e...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high noise, large vibration, and serious disturbance to the people during blasting construction, and propose a vibration-reduction control blasting technology that can effectively reduce blasting vibration and noise. The remaining length of the eye is filled with Φ35mm×500mm or Φ35mm×1000mm plastic bags of mud according to the design, and the powder eye is blocked with gun mud. The construction process of this method is simple, practical, economical and efficient

Images