DOI: 10.11799/ce202411015
Optimization and application of spray dust removal system for high fully-mechanized mining face
HAN Wenjie
ZHANG Xiaotao
ZHANG Wenzheng
Abstract：Aiming at the problems of serious dust pollution and poor dust removal effect in the fully-mechanized mining face with large mining height,we took the coal seam operation area of Daliuta Coal Mine as an example,and optimized the spray parameters using numerical simulation.By combing and comparing the existing spray dust removal technologies,a comprehensive dust removal technology was proposed combining support dust collection,spray inside and outside coal shearer and dust source tracking spray.The performance of the optimized spray dust removal system was verified by field experiments,and the field application and effect test were carried out.The results show that HH9.5 nozzles are preferred when the wind speed is 1.5 m/s.With the increase of pressure,the spray area and high concentration spray area shows a rising trend,and the economic benefit is the best when the pressure is 6 MPa.The removal rates of total dust and respiratory dust can reach 90.11%～94.43%,81.96%～84.40%,and the total dust and respiratory dust mass concentration in the working face space can be as low as 20 mg/m3 and 10 mg/m3,respectively.In summary,the spray comprehensive dust removal technology can effectively reduce the dust concentration of the working face,improve the safety level of coal mine production,and provide a useful reference for the dust control of the fully-mechanized mining face with large mining height.
Keywords：large mining heightfully-mechanized mining facedust pollutionspray dust suppression systemdust source trackingnumerical simulation
Publication Date：2024-11-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 96-102 )