Method for preventing and treating blockage of high-depth draw shaft

Abstract

The invention discloses a method for preventing and treating blockage of a high-depth draw shaft, and relates to the technical field of mining engineering. The method comprises the following steps that the water content and the fine ore mass ratio of ore in the draw shaft are controlled by adjusting the ore composition of the draw shaft in a stope; the ore drawing amount of the stope at the upper part of the draw shaft per hour is calculated, and the empty height of the draw shaft is controlled; when the draw shaft is blocked and the air height is continuously kept unchanged for 5 hours, air is introduced into the draw shaft through vent holes in a retaining wall of a draw shaft connection roadway to supplement pressure to a cavity formed at the blocked position; and when the cavity is not located at the position of the connection roadway, the cavity is pulled to the position of the connection roadway through bottom feeding and ore drawing, air pressure supplementing is carried out on the cavity, the supporting force below the balance arch at the blocked position is damaged, a large amount of ore falls down under the action of gravity, and the draw shaft is dredged. According to the method for preventing and treating blockage of the high-depth draw shaft, blasting and water filling are not needed, potential safety hazards caused by a traditional treatment mode are effectively avoided, damage to the structure in the draw shaft during treatment is avoided, and the service life of the draw shaft is prolonged.

Description

technical field [0001] The invention relates to the technical field of mining engineering, in particular to a method for preventing and treating blockage of a high-deep shaft. Background technique [0002] In the process of mining, the production mode of high-depth shaft transportation with the advantages of less investment, less equipment, low cost and large production capacity is usually adopted. However, during the production process, accidents such as blockage and landslides often occur in the high-depth chute, which seriously affect the mine production and pose a great threat to personal safety. [0003] When the ore enters the chute from the upper stope of the chute, the falling ore will impact the original ore of the chute under the action of gravity, and then the ore in the chute will be compacted, or large pieces will be occluded, or powder ore will be bonded, resulting in When discharging material at the bottom of the chute, arching or blockage occurs in a certain...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to: aim at the above-mentioned high-deep chute clogging phenomenon and the problems existing in the treatment method, the present invention provides a high-deep chute blockage prevention and treatment method, which can reduce the frequency of chute blockage, reduce the safety risk of chute blockage treatment, and improve the use of chute life

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