Octopus type corner gas drainage technology

Abstract

The invention belongs to the technical field of coal mine gas emission, and particularly relates to an octopus type corner gas drainage technology which comprises the steps that S01, a distribution connector is installed at the end of a drainage main pipeline, and a drainage hose matched with a tap in inner diameter is installed at the position of the tap of the distribution connector; s02, the shape and the included angle of each drainage hose are adjusted according to the actual environment of the corner area; and S03, the drainage hose extends into the upper corner of the mining roadway through the drainage main pipeline, and multi-point synchronous drainage is achieved in the corner area. The device is simple in structure and convenient to maintain, the pipeline coverage area can be increased, and multi-point synchronous extraction is achieved in a corner area.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal mine gas drainage, and particularly relates to an octopus type corner gas drainage technology. BACKGROUND

[0002] In the working face adopting the U-shaped ventilation mode, due to the defects of the ventilation mode, the intersection of the recovery roadway and the working face is prone to form an airflow vortex or a low-speed area, so that the fresh airflow is difficult to effectively disperse the gas, the gas density is low, and the gas is prone to float and stay in the narrow space near the upper corner of the roof, and the continuous influx of the gas in the crack seepage of the goaf into the area aggravates the accumulation of the gas in the upper corner, so that the gas in the upper corner of the working face is prone to exceed the limit.

[0003] At present, in view of the problem that the gas in the upper corner is prone to exceed the limit, the goaf buried pipe, the pipe insertion and other methods are commonly used for drainage and treatment, and most of the drainage methods such as the buried pipe and the pipe insertion adopt a single pipe for the corner drainage. The method of adopting a single pipe for the corner drainage has the advantages of being simple and easy to implement, and relatively convenient installation and maintenance, but has problems of small drainage radius, poor space coverage, low drainage efficiency and the like, so that it is difficult to ensure the drainage effect of the gas in the upper corner.

[0004] Therefore, how to provide an octopus type corner gas drainage technology capable of improving the coverage becomes a problem to be considered by those skilled in the art. SUMMARY

[0005] In view of the problems existing in the prior art, the present application discloses an octopus type corner gas drainage technology, which increases the pipe coverage area by the arrangement of the plurality of drainage hoses, and realizes the multi-point synchronous drainage in the corner area.

[0006] Specifically, the present application discloses the following technical scheme: An octopus type corner gas drainage technology, comprising the following steps: S01. A distribution connector is installed at the end of a drainage main pipe, and a drainage hose matched with the inner diameter of the distribution connector is installed through the branch connector of the distribution connector; S02. The shape and the included angle of each drainage hose are adjusted according to the actual environment of the corner area; S03. The drainage hose is extended into the upper corner of the recovery roadway through the drainage main pipe, and multi-point synchronous drainage is realized in the corner area.

[0007] Further, the drainage main pipe is bolted with the distribution connector through a flange, and a sealing gasket is arranged at the connection of the flange.

[0008] Further, the drainage hose is a universal bamboo joint pipe.

[0009] Further, the exhaust hose is a polytetrafluoroethylene hose, and an inner layer of the exhaust hose is covered with an iron wire for bending and shaping.

[0010] Further, the number of the exhaust hoses is 8.

[0011] Further, an end of the exhaust hose is provided with a horn-shaped air exhaust cover.

[0012] Further, the inside of the air exhaust cover is provided with a dustproof filter screen.

[0013] The present application has the following beneficial effects: The present application can meet different working environments by adjusting the shape and the included angle of the exhaust hose, while ensuring that the exhaust main pipeline is simple and easy to operate and maintain, and the upper corner gas extraction effect is taken into account, and the gas over-limit problem in the corner is effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is an installation schematic diagram of the exhaust main pipeline and the exhaust hose of the present application. Fig. 2 It is a schematic diagram of the present application in the corner area.

[0015] Among them, 1 is an exhaust main pipeline; 2 is a distribution connector; and 3 is an exhaust hose. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] Embodiment 1

[0018] As shown in the drawings, Figs. 1-2 The present embodiment discloses an octopus type gas extraction corner gas technology, including the following steps: S01. An exhaust main pipeline 1 is provided with a distribution connector 2 at an end thereof, and the distribution connector 2 is bolted to the exhaust main pipeline 1 through a flange, and a sealing gasket is arranged at the connection of the flange, and eight exhaust hoses 3 matched with the inner diameter of the distribution connector 2 are arranged at the distribution connector 2, so that the exhaust hoses 3 become an octopus tentacle type structure; S02. The shape and the included angle of each exhaust hose 3 are adjusted according to the actual environment of the corner area. S03. The extraction hose 3 is extended into the upper corner of the recovery roadway through the extraction main pipeline 1, and multi-point synchronous extraction is realized in the corner area.

[0019] As a preferred embodiment of the present application, a horn-shaped air extraction cover is installed at the end of the extraction hose 3, and a dustproof filter screen is arranged in the interior of the air extraction cover to prevent dust from entering the interior of the extraction hose.

[0020] As a preferred embodiment of the present application, the extraction hose 3 is a polytetrafluoroethylene hose, which has good corrosion resistance, and an iron wire for bending and shaping is coated on the inner layer of the extraction hose 3, so as to facilitate the adjustment of the shape and angle of the extraction hose 3.

[0021] Example 2

[0022] The difference between the present embodiment and example 1 is that the extraction hose 3 in the present embodiment is a universal bamboo joint pipe.

[0023] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application in any way. Therefore, any slight modification, equivalent change and modification made according to the technical essence of the present application to the above embodiment still falls within the scope of the technical solution of the present application.

Claims

1. An octopus-style corner gas extraction technology, characterized in that: Includes the following steps: S01. Install a distribution connector at the end of the main extraction pipeline, and install an extraction hose with an inner diameter matching the distribution connector through the branch connector; S02. Adjust the shape and angle of each extraction hose according to the actual environment of the corner area; S03. Extend the extraction hose through the extraction main pipeline to the upper corner of the mining roadway to achieve multi-point synchronous extraction in the corner area.

2. The octopus-style corner gas extraction technology according to claim 1, characterized in that, The main extraction pipeline is bolted to the distribution joint via a flange, and a sealing gasket is provided at the connection of the flange.

3. The octopus-style corner gas extraction technology according to claim 1, characterized in that, The extraction hose is a universal bamboo-joint hose.

4. The octopus-style corner gas extraction technology according to claim 1, characterized in that, The extraction hose is a polytetrafluoroethylene hose, and the inner layer of the extraction hose is covered with iron wire for bending and shaping.

5. The octopus-style corner gas extraction technology according to claim 1, characterized in that, The number of extraction hoses is 8.

6. The octopus-style corner gas extraction technology according to claim 1, characterized in that, The end of the extraction hose is equipped with a horn-shaped extraction hood.

7. The octopus-style corner gas extraction technology according to claim 6, characterized in that, The inside of the extraction hood is equipped with a dust filter.

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