Anchor cable anchoring multi-stage synergistic stirring and lifting guide assembly and working method thereof

Abstract

The invention discloses an anchor cable anchoring multi-stage synergistic stirring and lifting guide assembly and a working method thereof. The assembly comprises a stirring and crushing component installed and fixed to the upper end of an anchor cable and a plugging and lifting guide component installed on the upper middle portion of the anchor cable in a sleeving mode. The stirring and crushing component comprises an upper conical drill bit and a lower cylinder which are of an integrated structure, crushing and stirring paddles are arranged on the outer circle of the conical drill bit, and polymerization stirring blades and a lifting guide stirring blade are sequentially arranged on the outer circle of the cylinder from top to bottom; and the plugging and lifting guide component comprises a vertically-through sleeve, and a plugging and lifting guiding spiral blade and a centering positioning ring are sequentially arranged on the outer circle of the sleeve from top to bottom. The effective anchoring length can be designed and guaranteed, the effective anchoring length is increased, the shear resistance of the anchor cable at the position is enhanced, downward outflow of a resin anchoring agent can be effectively and continuously blocked, and the uniform and dense anchoring agent body within the designed anchoring length is guaranteed to the maximum extent. The anchor cable anchoring force and the bearing time of the peak strength of the anchor cable are effectively improved, and separation deformation of surrounding rock of a roof roadway containing a weak interlayer is effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of coal mine roadway support, and in particular relates to an anchor cable anchoring multi-stage synergistic stirring guide assembly and a working method thereof. Background technique [0002] As the main form of coal mine roadway support, resin anchor cable anchoring support has been widely used at home and abroad. Because the use of steel strand anchor cables to lengthen or full-length resin anchorage has a good effect in controlling the separation of surrounding rocks, it is widely used in coal mines. The underground field has been popularized and applied in a large area, and the anchoring performance of the anchoring system plays a key role in the support effect. Since mixing the resin anchoring agent is an important process in the anchoring engineering of the anchor cable, the mixing effect of the resin anchoring agent is closely related to the anchoring performance. [0003] At present, there are few s...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies in the prior art, the present invention provides an anchor cable anchoring multi-stage synergistic stirring guide assembly and its working method, which can avoid the accumulation of part of the resin anchoring agent without stirring due to the collapse of the anchor hole wall The problem of the effective anchoring length reduction caused by the reaction, and can effectively block the resin anchoring agent from flowing downward, to ensure the uniform and dense anchoring agent within the designed anchoring length to the greatest extent, and to center the anchor cable, anchoring hole, and annular anchoring agent. Greatly improved the anchoring effect of the anchor cable resin

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