A closed dust removal method and system for a tunneling face

Abstract

The invention discloses a closed dust removal method and system for a tunneling working face, comprising a press-in fan, a press-in fan, a metal frame gauze, an atomizing nozzle, a dust removal fan and a draw-out fan; the press-in fan forms The air flow is blown out through the press-in type blower to form an air curtain that can close the entire working section of the roadway, and at the same time blow the dust to the other side of the roadway; the atomizing nozzle and gauze mesh cooperate to form a dust control water curtain on the other side of the roadway The gauze and the extractor fan are connected to the dust removal fan. Under the action of the dust removal fan, the dust in the dust accumulation area is sucked into the extractor fan from the dust collection hood, and then enters the dust removal fan for purification. The design method of the present invention is simple and practical, easy to operate, less maintenance workload, does not hinder the normal operation of on-site personnel, the dust removal efficiency exceeds 96%, and the dust removal effect is good.

Description

technical field [0001] The invention relates to the technical field of dust removal technology for roadheaders in coal mine excavation working faces, and in particular to a closed dust removal method for the excavation work face and a closed dust removal system for the excavation work face. Background technique [0002] With the continuous improvement of the degree of mechanization of tunneling, the tunneling methods and techniques of mine roadways are developing towards high-yield and intensive production. It has the advantages of high output and fast footage, but at the same time, this technology is also likely to cause a high amount of dust in the tunneling roadway, which directly brings great difficulties to the dust prevention and control work in the mine. According to the actual measurement, without any dust prevention measures, the dust concentration at the face of the machine excavation is 1200-1500mg / m 3 , individual up to 3000mg / m 3 about. The existence of a lar...

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Problems solved by technology

[0003] At present, various dust removal technologies such as spraying inside and outside the roadheader, dust extraction and purification have been formed in the aspect of flour dust prevention and control of machine excavation. Defects that hinder the work of on-site staff, and, due to the particularity of the excavation work face, the existing dust removal measures are far from being able to reduce the dust concentration of the work face to a safe range

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