Prevention method of air shock wave disaster in mine goaf

Abstract

A prevention method of an air shock wave disaster in a mine goaf comprises constructing wall bodies through reinforced concretes in a stagger mode on the left side and the right side of a range within 5 to 20 m of existing periphery tunnels which are communicated with a goaf to form into a tooth-shaped wave obstruction wall when the air shock wave disaster happens in the periphery tunnels due to goaf collapse after mining of a mine. The prevention method of the air shock wave disaster in the mine goaf has the advantages of being simple to achieve and practical and wide in applicability, being capable of reasonably optimizing wall body building mode according to actual conditions, avoiding goaf stability monitoring difficulties caused by closeness of the goaf at the same time, effectively preventing or reducing impact air flow or air blast disasters caused by compressed air in the periphery tunnels when the goaf is collapsed and being beneficial to effective management of same type mine goaves.

Description

technical field [0001] The invention relates to a method for preventing and controlling air shock wave disasters in goafs of mines, and is especially suitable for the prevention and treatment of air shock wave disasters caused by the collapse of goafs in surrounding roadways after mining. Background technique [0002] At present, goafs are formed after mining. When the gobs are not effectively filled and treated, causing the roof of the goafs to collapse instantaneously, the space of the goafs will be squeezed, causing the air in the cavity to rapidly flow through the goafs. It is very easy to generate air impact airflow and air waves, which will cause equipment damage and casualties in the surrounding roadways, and bring safety hazards to the surrounding mining activities. In order to eliminate this hidden danger, the roadway through the goaf is often closed in the form of a closed wall. This method is not convenient for personnel to enter and exit the goaf boundary to insp...

AI Technical Summary

Problems solved by technology

[0002] At present, goafs are formed after mining. When the gobs are not effectively filled and treated, causing the roof of the goafs to collapse instantaneously, the space of the goafs will be squeezed, causing the air in the cavity to rapidly flow through the goafs. It is very easy to generate air impact airflow and air waves, which will cause equipment damage and casualties in the surrounding roadways, and bring safety hazards to the surrounding mining activities.

In order to eliminate this hidden danger, the roadway through the goaf is often closed in the form of a closed wall. This method is not convenient for personnel to enter and exit the goaf boundary to inspect and observe the stability of the gob. Second, when the energy of the air shock wave is large When it is used, it is very easy to break the airtight wall, and the broken wall will fly, which will cause a greater degree of loss, low reliability, and high disaster occurrence rate.

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