Manganese steel liner supporting chute damaged liner replacement liner assembly and its installation method

Abstract

The invention discloses a manganese steel liner to support a damaged liner of a chute and its installation method. , the anchoring assembly includes the anchor rod and its two ends symmetrically embedded in the steel wedge in an expansion manner, the inner end of the anchor rod is anchored to the rock through the steel wedge, and the outer end is anchored to the replacement liner through the steel wedge. During the replacement operation, remove the damaged liner, drill the corresponding anchor hole on the replacement liner, hoist the replacement liner in place, and then tap the anchor assembly to install it, which can effectively shorten the time for personnel to enter the well. After the replacement is completed, since the main mechanism of liner anchorage is to use expansion to increase the radial pressure of the anchor rod on the hole wall, and at the same time increase the friction, the anchorage to the replacement liner is more stable, and it is difficult to be damaged by the outside world. It avoids the disadvantage of poor shear tensile strength of welding points in the traditional method, and prolongs the service life of the replacement liner.

Description

technical field [0001] The invention belongs to the field of mine shaft and roadway engineering, in particular to a replacement liner assembly for a manganese steel liner supporting a damaged liner of a chute and an installation method thereof. Background technique [0002] Due to the complex geological conditions of the mine, it is inevitable that rocks will be broken during the construction of the main shaft. The use of manganese steel liners to support the chute has the characteristics of long application time and good ore drawing effect, and is more in line with the overall layout of the mine system. During the use of the chute, the continuous impact of the ore on the shaft wall will cause a part of the liner to wear or even break, so it needs to be maintained periodically. The maintenance engineering of the manganese steel liner supporting the chute is relatively difficult. The whole maintenance process is high-altitude operation, and the main focus is the wire rope. T...

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Problems solved by technology

[0003] The traditional repair of the manganese steel liner adopts the method of anchoring the steel hook to replace the damaged liner. After the steel hook is restored to use in the main chute, due to the continuous friction of the ore and the corrosion of water in the shaft, the position of the hook gradually falls off. As a result, the newly installed liner cannot be hung for a long time, showing the serious consequences of rapid damage to the repaired position and increasing maintenance frequency

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