A safe and efficient construction method for long-distance single-headed excavation face ventilation patio

Abstract

A safe and efficient construction method for a long-distance single-headed excavation face ventilation patio. Before the ventilation patio construction, ventilation holes are first drilled between the upper and middle tunnels and the lower middle tunnels, and the ventilation patio is constructed with the ventilation holes as the center to ensure The ventilated patio is smoothly penetrated, and carbon monoxide can also be quickly discharged through the ventilation holes to ensure the construction efficiency and construction safety of the ventilated patio. Hole bottom grinding process to improve the drilling efficiency of ventilation holes; the ventilation patio adopts the method of building a construction work platform to prevent the rope jamming problem of the hanging tank that may occur when the hanging tank is used for the ventilation patio construction; The feng shui linkage air supply device and the cloth cylinder air supply device can quickly reduce the concentration of carbon monoxide, nitrogen dioxide and dust on the working surface and improve the construction efficiency of the ventilation patio.

Description

technical field [0001] The invention relates to the technical field of construction of a ventilation system for a long-distance single-head excavation face in mining non-ferrous metal mines, in particular to a safe and efficient construction method for a long-distance single-head excavation face ventilation patio. Background technique [0002] In non-ferrous metal mine mining safety accidents, poisoning and suffocation accidents occur frequently, and because poisoning and suffocation accidents are very harmful, it must be highly valued and effective preventive measures must be taken; accident investigation and analysis show that poisoning and suffocation accidents cause Mine with casualties, especially those with imperfect ventilation system on long-distance single-headed excavation, are most prone to poisoning and suffocation accidents; therefore, in the actual production process, ventilation patios should be constructed on long-distance single-headed excavation to improve t...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the background technology, the present invention discloses a safe and efficient construction method for the ventilation patio of the long-distance single-head excavation surface. Ventilation holes are drilled in between, and the construction of the ventilation patio is carried out with the ventilation hole as the center to ensure the smooth opening of the ventilation patio; at the same time, the carbon monoxide generated during the construction of the ventilation patio can also be quickly discharged through the ventilation holes to ensure the ventilation efficiency of the construction work surface of the ventilation patio. The construction is safe; the drilling rig is a portable full hydraulic core drilling rig, which has the advantages of simple operation, safety, high efficiency, convenient installation and relocation, and less preparation work before drilling; the use of rope core drilling technology can realize core drilling without lifting the drill, The drilling efficiency is improved, and the occurrence of hole collapse accidents is reduced at the same time; the use of two-way diamond drill bits solves the occurrence of drill stuck accidents when the drill bit is lifted; the online hole bottom grinding process of the drill bit saves the need for drilling The work of replacing the drill bit not only improves the drilling efficiency, but also saves the consumption of the drill bit; the method of building a ventilation well construction work platform prevents the possible suspension caused by the collapse of the hole when the hanging tank is used for the construction of the ventilation well. The tank rope is stuck; the construction work surface of the ventilation patio adopts both a wind-water linkage air supply device and a tube-type air supply device, which can quickly reduce the concentration of carbon monoxide, nitrogen dioxide, and dust on the work surface, and improve the construction efficiency of the ventilation patio

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