Safe and efficient construction method of long-distance one-end heading face ventilation raise

Abstract

The invention discloses a safe and efficient construction method of long-distance one-end heading face ventilation raise. Before construction of the ventilation raise, first a ventilation hole is drilled between an upper middle section tunnel and a lower middle section tunnel, construction of the ventilation raise with the ventilation hole as the center is carried out to ensure smooth ventilationof the ventilation raise, meanwhile, carbon oxides can also be discharged quickly by the ventilation hole, and the construction efficiency and safety of the ventilation raise are ensured; for a drilling machine, a portable full hydraulic core drilling machine is selected, and a rope coring drilling technology, a bidirectional drill tooth diamond drill bit and a drill bot on-line hole bottom grinding technology are adopted to improve the drilling efficiency of the ventilation hole; the ventilation adopts a method for erecting a construction operation platform to prevent the problem that a ropeof a hoisting tank may be stuck in construction of the ventilation raise; and a ventilation raise construction working face simultaneously adopts a wind and water linking wind supply device and a cloth-barrel type wind supply device, the concentration of the carbon oxides, nitrogen dioxides and dust of the working surface can be reduced, and the construction efficiency of the ventilation raise isimproved.

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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