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Research On Active Water Grouting And Stemming Technology For Extra-Large Water-Rushing Of Limestone

Posted on:2007-01-30Degree:MasterType:Thesis
Country:ChinaCandidate:Z G LiuFull Text:PDF
GTID:2121360185492572Subject:Mining engineering
Abstract/Summary:PDF Full Text Request
Undergroud water rushing is very dangerous to the mine safety and the workers' lives .The main reasons why water bursting in collieries are that disclosing the faults that link with water in caving and producing. In order to prevent water rushing, using drain out water and remain coal pillars near the faults. It is effective but causes water resources' pollution and waste. At present there is no accurate formula for remaining coal pillars to forecast. We should depend on our experiences. But it is easy to cause accidents for coal pillars destroy.This paper introduced the technique of using active water affusing technology to prevent water burst firstly in the big colliery based on practice. Grouting in the around of infalling boundary and informing wall to prevent water based on clear knowning the condition of geology and hydrology. This method not only assure the safety of production but also protect the water resources around the colliery.Guojiazhuang colliery using this method changed the strain condition in the working face need by carry the project in ground and underground. So it prolonges the colliery's service time and assures the normal production. With it the colliery got social and economic profits.
Keywords/Search Tags:coal mine safety, underground water bursting, active water affusing technology
PDF Full Text Request
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