Treatment method of dug roadway roof fall

Abstract

The invention discloses a treatment method of a dug roadway roof fall. The treatment method comprises the steps that after roof falling is completed, roof falling gangue is cleaned up timely, and loose coal-rock masses on the surface of a roof fall area are stirred up and fall; then a I-shaped steel frame shed is erected within a certain range of the roof fall area and the two sides and a layer ofwooden plate is tiled on the frame shed; then a filling bag is opened and the periphery of the bottom of the filling bag is fixed to the wooden plate, one end of a steel pipeline extends into the bagfrom a sleeve opening at the bottom of the filling bag and the top of the filling bag is supported to the highest point of the roof fall area, the steel pipeline is fixed and the other end of the steel pipeline is connected with a filling pipeline, the sleeve opening is fastened, and grouting is conducted till the whole roof fall area is filled with grout; and finally after the grout is cured, anchor cables are driven in the range of the roof fall area. According to the treatment method of the dug roadway roof fall, pressure stress can further be actively provided for the coal-rock masses onthe surface of the roof fall area by means of filling bodies while it is ensured that the filling bodies are stable, the stress environment of the coal-rock masses on the surface of the roof fall areais improved, once more roof falling of the roof fall area under the effect of construction disturbance can be effectively prevented, operation is simple, and the applicability is high.

Description

technical field [0001] The invention relates to a method for treating the roof fall of an excavated roadway, in particular to a method for passing through the roof fall area of ​​the roadway which is suitable for controlling the surrounding rock of the roadway. Background technique [0002] Roof fall is a very harmful roadway roof disaster, which seriously affects the safety and normal production of mines, and even causes casualties. If it is not handled properly, it will lead to another roof fall. Nowadays, the commonly used methods to deal with the roof fall of the excavated roadway include: anchor shotcrete method, wedge method, wooden pile method, beam penetration method and so on. Engineering practice shows that these methods still have certain limitations in application: the anchor shotcrete method requires a pressurized air system in the roadway and a relatively complete roof in the void area, otherwise it will not be possible to drill holes or easily lead to another ...

AI Technical Summary

Problems solved by technology

Engineering practice shows that these methods still have certain limitations in application: the anchor shotcrete method requires a pressurized air system in the roadway and a relatively complete roof in the void area, otherwise it will not be possible to drill holes or easily lead to another roof fall due to drilling disturbances; The wedge-impacting method, the wooden pile method and the beam-penetrating roof protection method are all passive support methods. When applied, they are not only limited by the size of the roof fall, but also easily fail under the influence of engineering disturbances such as the advanced bearing pressure of the working face.

It can be seen that although the existing methods can achieve certain effects under certain circumstances, their applicability is not enough

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