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Study On Technology Of Water Injection And Experiment In Chang Gouyu Mine

Posted on:2010-08-11Degree:MasterType:Thesis
Country:ChinaCandidate:L ZhangFull Text:PDF
GTID:2131330332962550Subject:Mining engineering
Abstract/Summary:PDF Full Text Request
This paper mainly studies long-role coal seam water injection which uses in Chang Gouyu mining.It mainly is in order to solve mine dust to be big and stress concentration in deep mining.The main contents and conclusions are as following:1.The elementary theory of water injection in coal seam and four methods and their selection criteria is summarized,then emphatically described the technique and technology of long-role injection in coal seam.2.Based on the theoretical analysis and lab experiments,the basic principles of fallen dust and precenting rook burst on coal seam water infusion is studied.3.By using coupling of multi-physics software named Comsol, numerical simulation had been done aiming at wetting effect under different injection pressure and foundation for the research of injection test is provided.4.Based on the geological characteristics of 4# coal seam in Chang Gouyu coal mine,the water injection system and the water injection parameters which used in field are determined.5.Compared around the irrigation based on the measured data analysis the change of dust density and front abutment pressure with field test data.The results showed that it had a very good dust-proof and the effect of relieving in Chang Gouyu.The technology of long-role coal seam water injection is an effective prevention control technical measures.
Keywords/Search Tags:Water injection in coal seam, Dust, Rockburst, Numerical simulation, Wetted radius
PDF Full Text Request
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