De-noising and dust removal blast hole stemming method for drilling blasting of earth and stone in urban and rural areas

Abstract

The invention discloses a de-noising and dust removal blast hole stemming method for drilling blasting of earth and stone in urban and rural areas. According to the method, a stemming section comprises a bottom water bag, a middle inverted funnel and a conventional stemming material, the water bag is tied down by a traction rope and is lifted into a hole, the other end of the traction rope is tied to a bearing bar of an orifice of a blast hole, and the edge of the inverted funnel is clamped on the wall of the blast hole to be fixed. Most of shock wave energy generated by explosion can be converted into internal energy required by water vaporization and atomization and kinetic energy of water jet so as to weaken noise; meanwhile, the blasting dust can be wrapped by dispersed water mist to reduce pollution; and in addition, after the water bag is broken, the lower part of the funnel is filled with water, so that the strength of shock waves is indirectly reduced, the stemming time is prolonged, and the stemming effect is enhanced. The method provided by the invention can also be used in rock blasting construction of mines, water and electricity, traffic and other fields.

Description

[0001] technical field [0002] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a method for noise reduction, dust reduction and blockage used in urban and rural earth and stone cube drilling and blasting. Background technique [0003] In geotechnical engineering blasting, blast hole plugging is an important link in drilling and blasting construction, and it is also one of the important factors affecting the blasting effect. Both theory and practice have shown that good blast hole plugging can prolong the duration of blast hole pressure, improve the utilization rate of explosives and effectively reduce blasting noise. Blast hole plugging usually uses blasthole mud as the plugging material, but due to various reasons such as construction and materials, it is difficult to guarantee the plugging effect of blastholes. In addition, during the process of blasting bulge rupture and broken rock mass throwing, the residual energ...

AI Technical Summary

Problems solved by technology

Blast hole plugging usually uses blasthole mud as the plugging material, but due to various reasons such as construction and materials, it is difficult to guarantee the plugging effect of the blasthole

In addition, during the process of blasting bulge rupture and broken rock mass throwing, the residual energy in the detonation gas will be converted into air shock waves and noise, which will affect people's production and life

In addition, the rock blasting process produces a large amount of flying dust, polluting the environment

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