Roadside seal device for retaining roadways along goaf and application method thereof

Abstract

The invention discloses a roadside seal device for retaining roadways along goaf. The roadside seal device comprises seal mechanisms, support mechanisms and lifting mechanisms. The seal mechanisms seal a gateway, the support mechanisms provide support force for the seal mechanisms, and the lifting mechanisms drive the seal mechanisms and the support mechanisms to rise and fall. The seal mechanisms comprise flexible cord fabric. The support mechanisms comprise carriers and support blocks. The top ends of the flexible cord fabric surround and wrap the support blocks and are in attached contact with a roadway roof plate, and the bottom ends of the flexible cord fabric are in attached contact with a roadway bottom plate. The invention further discloses an application method of the roadside seal device for the retaining roadways along goaf. According to the method, heading directional blasting of an immediate roof is performed before coal face mining, and multiple groups of connected seal mechanisms, support mechanisms and lifting mechanisms are arranged in the length direction of the gateway in sequence. It is guaranteed that the gateway is completely isolated from the goaf, air flowing through is prevented, the roadway seal effect is good, all related parts of the seal mechanisms and the support mechanisms can be recovered, and therefore seal cost is saved.

Description

technical field [0001] The invention belongs to the technical field of roadway sealing, and in particular relates to a roadside sealing device for goaf retention and an application method thereof. Background technique [0002] A large amount of coal resources are wasted by the mining method of traditional coal pillar protection roadway, and a large amount of compressive elastic energy is accumulated on the coal pillar, which is easy to cause dynamic disasters such as rock burst, coal and gas outburst, etc. Therefore, the coal pillarless mining technology is The direction of coal mining development. The coal-pillar-free roof-cutting technology adopts blasting and pre-split direct roofing. Under the stope cycle pressure, the direct roof sinks to the bottom to form the roadside, which isolates the goaf, realizes coal-pillar-free mining, and improves the stope surrounding stress distribution. After the roof is cut without coal pillars to form a roadway, the key to the success ...

AI Technical Summary

Problems solved by technology

[0004] 1. There is no special device to lift and hang the soft curtain while realizing the full pressure effect on the roof of the roadway;

[0005] 2. It is difficult to achieve complete sealing for the roadway with large undulating roof;

[0006] 3. The process of installing the sealing device is complex;

[0007] 4. The sealing device cannot be fully recycled, and the sealing cost is high

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