CN-121993245-A - Colliery is high-efficient dust fall system of spraying-curtain integration in pit

CN121993245ACN 121993245 ACN121993245 ACN 121993245ACN-121993245-A

Abstract

The invention discloses an underground coal mine spray-curtain integrated high-efficiency dust fall system, which relates to the technical field of underground coal mine dust prevention and comprises a stope face, wherein a return air roadway is arranged on one side of the stope face, a transport roadway is arranged on the other side of the stope face, an underground comprehensive dust prevention control center is arranged in the transport roadway, the underground comprehensive dust prevention control center comprises a stope face dust removal control module, a return air roadway dust removal control module and a parameter monitoring device, a mobile power station is arranged above the underground comprehensive dust prevention control center, and a magnetized water production device is arranged above the mobile power station. The coal mine underground spraying-curtain integrated high-efficiency dust fall system adopting the structure has the advantages that the first spraying mechanism and the second spraying mechanism are adopted to carry out double dust removal, the dust removal effect is better, the monitoring and monitoring center is adopted to remotely control the operation of the underground comprehensive dust prevention control system, the intelligent switch dust removal equipment is adopted, and the water resource and the use cost are saved.

Inventors

FU HONGWEI
He hongru
HAN PENGFEI
Jia Qiru
LI QUANZHONG
ZHAO CHEN
ZHAO JIANGWEI
YUAN BOTAO
YANG JIAXIN

Assignees

山西工程技术学院

Dates

Publication Date: 20260508
Application Date: 20240111

Claims (10)

1. The coal mine underground spraying-curtain integrated efficient dust fall system is characterized by comprising a stoping working face, wherein a return air roadway is arranged on one side of the stoping working face, a conveying roadway is arranged on the other side of the stoping working face, an underground comprehensive dust control center is arranged in the conveying roadway and comprises a stoping working face dust removal control module, a return air roadway dust removal control module and a parameter monitoring device, a mobile power station is arranged above the underground comprehensive dust control center, and a magnetized water production device is arranged above the mobile power station.
2. The underground coal mine spray-curtain integrated efficient dust fall system of claim 1, wherein the stope dust removal control module controls two atomizing ejectors, the two atomizing ejectors are symmetrically arranged on a double-drum shearer, the double-drum shearer is arranged on the stope, and the atomizing ejectors comprise an azimuth adjusting mechanism and a first spraying mechanism.
3. The underground coal mine spray-curtain integrated efficient dust fall system of claim 2, wherein the return air roadway dust removal control module controls a double-layer curtain structure, the double-layer curtain structure comprises a first curtain arranged on the return air roadway and a second curtain arranged above the first curtain, and a second spray mechanism is arranged at the tops of the first curtain and the second curtain.
4. The underground coal mine spray-curtain integrated high-efficiency dust fall system according to claim 3, wherein the second spray mechanism comprises a conveying main pipe arranged at the tops of the first curtain and the second curtain, a first branch pipe and a second branch pipe are connected to the conveying main pipe, the second branch pipe is arranged in front of the second curtain, and the first branch pipe is arranged in front of the first curtain; the first branch pipe is provided with three first nozzles, and the second branch pipe is provided with one second nozzle.
5. The coal mine underground spray-curtain integrated efficient dust fall system of claim 4, wherein the middle positions of the first curtain and the second curtain are respectively provided with a passage opening, a magnetic door curtain is arranged on the passage opening, and a light reflecting strip is arranged on the magnetic door curtain.
6. The underground coal mine spray-curtain integrated high-efficiency dust suppression system of claim 5, wherein the second curtain and the first curtain are fixed on a top plate and two side plates of the return airway through a plurality of spring hooks.
7. The coal mine underground spray-curtain integrated efficient dust fall system of claim 6, wherein the parameter monitoring device comprises a direct-reading photoelectric dust meter, a photoelectric digital wind meter, an optical interference gas meter, an infrared temperature sensor and an electrolyte humidity sensor.
8. The coal mine underground spray-curtain integrated efficient dust fall system of claim 7, wherein the magnetized water production device comprises a water tank and an active magnetizing assembly arranged below the water tank, and a spray pressurizing pump is arranged below the active magnetizing assembly.
9. The underground coal mine spray-curtain integrated high-efficiency dust suppression system of claim 8, wherein the active magnetizing assembly comprises a mixer, an active water tank and a magnetizer.
10. The coal mine underground spray-curtain integrated high efficiency dust suppression system as set forth in claim 9, wherein said magnetized water generator assembly produces a mixture of activated magnetized water and an activator which is supplied to said first spray mechanism and said second spray mechanism via pneumatic valve sets.

Description

Colliery is high-efficient dust fall system of spraying-curtain integration in pit Technical Field The invention relates to the technical field of underground dust prevention of coal mines, in particular to an underground spraying-curtain integrated efficient dust settling system of a coal mine. Background At present, although the dust prevention methods of underground stoping working surfaces of coal mines at home and abroad achieve a certain dust reduction effect, the methods have certain technical or use defects and are not accepted by field workers. The method for lowering dust on the stoping working face generally adopts an inner spraying device and an outer spraying device of the coal mining machine, but the problems that nozzles are easy to block or crush, the spraying installation position is improper and the like generally exist, the dust lowering effect is poor, the rule requirements are difficult to reach, the difference is quite great, and the inner spraying device can not be used continuously after a new coal mining machine is used for about half a year. The other method is to fill coal seam with water, which is a method of injecting pressure water into coal seam by drilling deep hole before coal exploitation, and has high water consumption, increased water content of coal, water content up to 4% or more, reduced coal price, reduced economic benefit of coal enterprise, high cost of deep hole injection, difficult drilling, limited applicable condition, and the following coal seam can not be applied (1) surrounding rock has serious water absorption expansion property, easy to cause roof collapse or bottom plate deformation after water injection, or complicated geological condition, serious roof damage, coal seam affecting coal mining safety after water injection, (2) thin coal seam affecting coal mining safety or causing work condition deterioration after water injection, (3) coal seam with original natural water content or water content greater than 4% after fire prevention grouting, (4) coal seam with porosity less than 4%, 5) coal seam with very soft, broken, easy hole collapse and difficult hole formation when drilling, (6) coal seam group or layered mining method is adopted, and upper layer or lower layer mining is adopted when the dust-proof measure is adopted. Under the severe situation and the urgent need, based on the thought principle of taking the person as a basis, caring the life, starting from the source and preventing the dust from the lung, the invention provides the coal mine underground spraying-curtain integrated high-efficiency dust fall system, solves the dust pollution problem of the stope flour, and has important practical significance. Disclosure of Invention The invention aims to provide an underground coal mine spray-curtain integrated efficient dust fall system, which solves the problems that the existing dust fall device is poor in dust fall effect and dust fall equipment is easy to damage. The invention provides an underground coal mine spray-curtain integrated high-efficiency dust fall system, which comprises a stope face, wherein a return air roadway is arranged on one side of the stope face, a transportation roadway is arranged on the other side of the stope face, an underground comprehensive dust control center is arranged in the transportation roadway, the underground comprehensive dust control center comprises a stope face dust removal control module, a return air roadway dust removal control module and a parameter monitoring device, a mobile power station is arranged above the underground comprehensive dust control center, and a magnetized water production device is arranged above the mobile power station. Preferably, the dust removal control module of the stope face controls two atomizing ejectors, the two atomizing ejectors are symmetrically arranged on the double-drum coal mining machine, the double-drum coal mining machine is arranged on the stope face, and the atomizing ejectors comprise an azimuth adjusting mechanism and a first spraying mechanism. Preferably, the air return duct dust removal control module controls a double-layer curtain structure, wherein the double-layer curtain structure comprises a first curtain arranged on the air return duct and a second curtain arranged above the first curtain, and second spraying mechanisms are arranged at the tops of the first curtain and the second curtain. Preferably, the second spraying mechanism comprises a conveying main pipe arranged at the top of the first curtain and the second curtain, a first branch pipe and a second branch pipe are connected to the conveying main pipe, the second branch pipe is arranged in front of the second curtain, and the first branch pipe is arranged in front of the first curtain; the first branch pipe is provided with three first nozzles, and the second branch pipe is provided with one second nozzle. Preferably, the middle positions of the first curtain and the second curtain ar