Research on failure mechanism and support technology of fractured rock mass in an undersea gold mine

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dc.contributor.authorZhao, Xingdongen
dc.contributor.authorZhu, Qiankunen
dc.contributor.authorWestman, Eriken
dc.contributor.authorYang, Shanghuanen
dc.date.accessioned2023-06-20T19:37:00Zen
dc.date.available2023-06-20T19:37:00Zen
dc.date.issued2023en
dc.description.abstractThe surrounding rock control has been a difficult problem for fractured rock mass in hard rock mines. This article describes a case study of the failure mechanisms and the support design technology for fractured rock mass drifts in Xinli Gold Mine. Based on field investigation, the geology characteristics, failure types, influencing factors, support types, and their failure types were analyzed. The rock mass classification, rock mass physical and mechanical parameters were obtained by using Q, RMR, and GSI systems. The zoning of surrounding rock, stability analysis and zoning support schemes design were carried out based on rock mass classification results. The pretension is designed by China underground mine experiences and verified by numerical simulation. RS2 was used to compare the plastic zone under pre- and post-support conditions. The plastic zone is significantly reduced after support is installed, which indicates that the designed support schemes can effectively control the failure of surrounding rock. In view of difficulties in the excavation and support of fractured rock mass, the short excavation and short support technology was proposed to ensure the success excavation of the drift in fractured rock mass. The field application shows that the short excavation and support technology are effective.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1080/19475705.2023.2221776en
dc.identifier.eissn1947-5713en
dc.identifier.issn1947-5705en
dc.identifier.issue1en
dc.identifier.other2221776en
dc.identifier.urihttp://hdl.handle.net/10919/115463en
dc.identifier.volume14en
dc.language.isoenen
dc.publisherTaylor & Francisen
dc.rightsCreative Commons Attribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en
dc.subjectFractured rock massen
dc.subjectfailure mechanismsen
dc.subjectrock mass classificationen
dc.subjectzoning supporten
dc.subjectnumerical simulationen
dc.subjectshort excavation and short support technologyen
dc.titleResearch on failure mechanism and support technology of fractured rock mass in an undersea gold mineen
dc.title.serialGeomatics Natural Hazards & Risken
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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