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Study On Bolt Mesh Support Parameter And Safety Reliability In Softrock Of Coal Roadway In Zhangzhuang Coal Mine

Posted on:2006-07-29Degree:MasterType:Thesis
Country:ChinaCandidate:X F HeFull Text:PDF
GTID:2121360155962494Subject:Mining engineering
Abstract/Summary:PDF Full Text Request
extracts in our country, It becomes one of titles in research fields, The characteristics and surrounding pressure characters of softrock are analysed at first by scale model simulation in lab. the support effort and movement laws of surrounding rock under stationary surrounding pressure are studied between bolt-beam-mesh support and U-steel support , Anchor-hold analyse in sounding rock by anchors which are in different bolt-holding density, Scale model simulation is used in the bolt support of soft rock coal gateways . A lot of practical measurements on spot model simulation in lab are used to validate analysis and forecast displacement of anchor-hold body of surrounding rock in theory,bolt-beam-mesh-cable support is rather better than bolt-mesh support in coal lane of softrock, Reasonable support system is designed and applied in softrock lanes at zhangzhuang mine in the north of AnHui , and the perfect support effect is obtained , Not only the bolt-beam-mesh-cable-supported coal getways are well maintened and the need of mine product practice is meeted ,but also do they bring distinctly economic benefit , It will give a beneficial reference to other analogical mine in extensively distributive softrock support in our country.
Keywords/Search Tags:Softrock of Coal roadway, Bolt-beam-mesh support, Scale model simulation, Theory analysis, Practical measurements
PDF Full Text Request
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