Method for reinforcing unloading beams of unloading station of coal mine

Abstract

The invention discloses a method for reinforcing unloading beams of an unloading station of a coal mine. The method includes technological steps of (1), chiseling away concrete of redundant portions of inner sides of the unloading beams A and B; (2), increasing widths of reinforced concrete beams of outer sides of the unloading beams; (3), welding anchor bars on steel plates which have thicknesses ranging from 8mm to 12mm and are used as formworks, and then anchoring the steel plates on the inner sides of the unloading beams; (4), grouting and compacting high-strength non-shrinkage grouting materials in gaps among the steel plates and the unloading beams; (5), additionally arranging concealed beams on an access slope between the unloading beams to prevent the unloading beams from continuing deforming inwardly after the unloading beams are reinforced; and (6), grooving parts among the unloading beams and a concrete slab of the top of a coal bunker. The method has the advantages that the method is simple in implementation process, easy to implement, short in period, and low in cost, and becomes effectively quickly, the deformation resistance and the bearing capacity of the unloading beams can be effectively improved, service lives of the unloading beams of the coal bunker are prolonged, safe running of production of the coal mine is guaranteed, and problems that unloading beams deform and tramcars cannot run through due to deformation of an unloading chamber are effectively solved.

Description

technical field [0001] The invention relates to a method for strengthening the unloading beam of a coal mine unloading station, which is especially suitable for the unloading beam of the coal mine unloading station, which is deformed inwardly due to inclination and bending under complex deformation conditions in the mountain body, which hinders the passage of unloading mine cars and affects the safe operation of coal mine production. Reinforcement treatment of unloaded beams. Background technique [0002] my country's coal mining enterprises have many levels of unloading stations. The unloading beams have been used for decades, and problems such as aging, cracking, deflection, and deformation will inevitably occur, which will lead to a decrease in the stiffness and stability of the structure. The light ones will affect the normal operation of the unloading beams. In severe cases, the unloading beam will lose its function, be damaged or even collapse, causing safety accidents....

AI Technical Summary

Problems solved by technology

There are problems of long construction period and high cost for rebuilding or removing the original unloading beam and reinstalling a new unloading beam at the original position.

In addition, after using jacks or anchor cables to rectify and strengthen, it is prone to repetition, which cannot fundamentally solve the problem of deformation of the unloading beam

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