A hydraulic composite rapid plugging method for drilling and blasting

Abstract

The invention discloses a water pressure composite quick blocking method applied in drilling and blasting. The quick blocking comprises a water bag, a dynamite roll, a water bag and a high-molecular resin sealing bag. the water bag of the first segment is placed at the bottom of a hole opening; the dynamite roll of the second segment is closely connected with the water bag in series; the water bag of the third segment is placed behind the dynamite roll of the second segment; the high-molecular resin material of the fourth segment is placed in a drilling after kneading, squeezing and foaming; the high-molecular resin material flows out as liquid and penetrates into the space among the dynamite, the water bags and socks; quick solidification is performed and blast holes are blocked. the viscosity of the high-molecular resin material with rocks is larger than that of traditional stemming. the impact wave produced by the explosion of the dynamite is directly applied on rocks through the water bag installed at the bottom of the blast hole and therefore the explosive energy consumption is reduced and blast hole utilization is increased. The water bags in the blast hole generates water atomization effect during explosion which can reduce air impact wave, absorb explosive dust and dilute poisonous gases.

Description

Technical field: [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a hydraulic composite rapid plugging method for drilling and blasting. Background technique: [0002] In engineering blasting, blasthole blockage is an important link in engineering construction, and it is also an important factor affecting engineering progress and engineering quality. Due to the large amount of smoke and dust produced after blasting, which pollutes the environment, it has become a bottleneck restricting the improvement of blasting excavation technology. Although there is currently a water gun mud (or water pressure) plugging technology to reduce smoke and dust, but using water bags and traditional yellow mud as plugging materials, due to the complicated operation and long time consumption, the gun mud will soften when it meets water and bond with the rock Due to the low accuracy and other reasons, it is difficult to guarantee the p...

AI Technical Summary

Problems solved by technology

Due to the large amount of smoke and dust produced after blasting, which pollutes the environment, it has become a bottleneck restricting the improvement of blasting excavation technology.

Although there is currently a water gun mud (or water pressure) plugging technology to reduce smoke and dust, but using water bags and traditional yellow mud as plugging materials, due to the complicated operation and long time consumption, the gun mud will soften when it meets water and bond with the rock Due to the reasons such as low precision, it is difficult to guarantee the plugging effect of the blast hole, the energy utilization rate of the explosive is also low, and the cycle footage is relatively short.

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