Device for processing hole spraying during water jet coal seam gap cutting

Abstract

The invention discloses a device for processing hole spraying during water jet coal seam gap cutting. The device comprises a hole sealing device, a hole sealing capsule wrapping the periphery of the hole sealing device and a buffer sealing device with an inner cavity. A gap which can be filled with water is arranged between the hole sealing capsule and the outer wall of the hole sealing device. One end of the buffer sealing device is connected with the hole sealing device, and the other end thereof is provided with a sealing block which can be opened towards two sides. Sealing rubber matched with a drill stem is arranged in the sealing block. A first gas hose for discharging gas is arranged at the upper end of the buffer sealing device. A gas, water and slag separating tank is connected to the lower end of the buffer sealing device through a thick hose. The device has the advantages that during high-pressure water jet gap cutting permeability increasing, the device can effectively collect coal slag, gas and waste water sprayed from drilled holes when hole spraying occurs, the collected coal slag, gas and waste water are separated through the separating tank, gas concentration in a roadway is reduced, and life safety of workers and smooth coal mining are guaranteed; the device is simple in structure, light, simple to operate and worthy of application.

Description

Technical field [0001] The invention relates to the field of coal seam gas drainage and control, in particular to a water jet coal seam slotted nozzle hole processing device. Background technique [0002] For a long time, the fatality rate of coal mine gas accidents has remained high, and gas has always been the main factor affecting coal mine safety production. And as the mining depth increases, the gas pressure and gas content continue to increase, and gas disasters will manifest themselves in a more obvious way. Therefore, before coal mining, the use of high-pressure water jets to cut seams to form a network of seams to strengthen gas drainage has been widely used. In the process of cutting seams with high-pressure water jets, factors such as coal seam instability and possible sticking and holding drills will cause the mixture of cinder and water in the cutting seams, and high-pressure gas to spout intermittently along the borehole. The nozzle hole causes the gas concentrat...

AI Technical Summary

Problems solved by technology

This device is used in the construction process of drainage drilling, mainly for the separation of gas and water slag, and this device was originally used for drainage drilling construction. There are many problems with this device for high-pressure water jet slotting construction: hole sealing The pipe wall of the device is relatively thick, with an outer diameter of 160mm, which requires multiple processes such as secondary drilling; the sealing part of the buffer device is integrated, resulting in many steps and complicated procedures in the process of installing the drill bit; and the weight of the sealer and the buffer device It is relatively large, about 30 kg, and it is very laborious for laborers to carry and install it

[0005] At present, there is no device that is simple in structure, convenient and light, easy to operate and move, and can effectively control the nozzle hole phenomenon generated during the high-pressure water jet slit anti-reflection operation.

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