Water prevention and control process in construction of metallurgical underground mining ore pass fragmenting system

Abstract

The invention discloses a water prevention and control process in construction of a metallurgical underground mining ore pass fragmenting system, and belongs to the technical field of underground metal mine water prevention and control methods. According to the technical scheme, grouting curtain construction is conducted on an upper ore storage bin, a jack shaft, a smashing chamber, a lower ore storage bin, a belt ore supply chamber and the like, through the direction-fixed branch hole construction technology and the less-footage more-punching method, the utilization efficiency and exposing rate of grouting holes are increased, and therefore the optimal grouting effect is achieved; meanwhile, ground pre-grouting construction is conducted on the ore pass fragmenting system in the shaft excavation period, the construction period can be saved, and the construction safety in the digging process is ensured. The situation that in the construction of a traditional ore pass fragmenting system, the water control concept is detected through working face grouting is broken through, and a new concept is provided for water prevention and control of large modern metallurgical mines with complex hydrogeological conditions. The water prevention and control period in the mine construction can be remarkably shortened, the safety coefficient in the construction process is increased, engineering investment is reduced, and the construction speed is increased.

Description

Technical field [0001] The invention relates to a water prevention technology suitable for a metallurgical underground mine slipping system, and belongs to the technical field of underground metal mine water prevention methods. Background technique [0002] In recent years, large-scale metallurgical underground mines have risen rapidly under complex hydrogeological conditions, and water prevention and control in underground mine construction has become a major problem that restricts the speed of mine construction. In traditional metallurgical underground mines, especially large-scale iron mines under complex geological conditions, in the construction and construction of the slipping system, the prevention and control of water use the working face water detection and control construction method, because the mine silo, crushing chamber, etc. in the slipping system The main large chamber has a large cross-section, even more than 2000m3, and the exposure time during the tunneling pro...

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Problems solved by technology

In traditional metallurgical underground mines, especially in the construction of the slip-breaking system of large-scale iron mines under complex geological conditions, the prevention and control of water all adopts the method of water control at the working face. The section of the main large chamber is relatively large, even exceeding 2000m3, and the exposure time during the excavation process is long, which not only makes the water control work difficult, the construction period is long, and the water control effect is not ideal. At the same time, dangerous accidents such as water inrush and landslides are prone to occur. It is necessary to seek a new construction technology for water control of the slip-through system, so as to shorten the construction period of the slip-through system for water control, save engineering investment, and ensure construction safety at the same time

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