Asymmetric anchor beam structure for gob-side roadway roof supporting

Abstract

The invention discloses an asymmetric anchor beam structure for gob-side roadway roof supporting. The asymmetric anchor beam structure comprises mounting supports, two adjustable supporting columns, a supporting cross beam and a slope roof supporting assembly. The two adjustable supporting columns are arranged in a bilateral symmetry mode, and the lower end face of each adjustable supporting column is provided with the corresponding mounting support. The adjustable supporting columns are arranged on the mounting supports in a relatively sliding and limiting manner; moreover, the supporting cross beam is erected between the adjustable supporting columns, the supporting cross beam serves as a supporting body of a gob-side roadway roof, and built-in groove positions used for fixing the supporting roof in an embedded mode are symmetrically formed in the supporting cross beam. The supporting cross beam locally inclines and deflects along with the adjustable supporting columns on the two sides so as to adapt to the postures of all natural inclined planes where the gob-side roadway roof is located; the upper end face of the supporting cross beam is provided with a slope roof supporting assembly, and the slope roof supporting assembly abuts against and makes contact with the gob-side roadway roof through the deviation adjusting effect of the slope roof supporting assembly.

Description

technical field [0001] The invention belongs to the technical field of roadway support, in particular to an asymmetrical anchor beam structure for roof support of a gob-side roadway. Background technique [0002] Our country has used bolt support in coal mine rock roadway for nearly 50 years. However, because the surrounding rock of coal seam roadway is soft and affected by mining, the deformation of the surrounding rock is very large, which requires high support technology, so the development of slow. In coal mine gob-side roadway, after the working face mining is completed, the next coal mining face will be excavated along the goaf with small coal pillars or zero coal pillars; In asymmetric support, although the structure is simple, the reliability is poor, especially as time goes by, the anchor rod and the anchor cable are prone to loosening, and accidents are extremely prone to occur, which seriously affects the safety and stability of production Moreover, especially i...

AI Technical Summary

Problems solved by technology

[0002] Our country has used bolt support in coal mine rock roadway for nearly 50 years. However, because the surrounding rock of coal seam roadway is soft and affected by mining, the deformation of the surrounding rock is very large, which requires high support technology, so the development of slow

In coal mine gob-side roadway, after the working face mining is completed, the next coal mining face will be excavated along the goaf with small coal pillars or zero coal pillars; In asymmetric support, although the structure is simple, the reliability is poor, especially as time goes by, the anchor rod and the anchor cable are prone to loosening, and accidents are extremely prone to occur, which seriously affects the safety and stability of production Moreover, especially in the roof slope support process, due to the asymmetry of the force, the support method of the slope support is easy to cause deformation or even displacement of the top support plate

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