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- W2381999340 abstract "For rock engineering of various types,it shall at first determine basic quality of rock mass,i.e.BQ,through classification of rock masses in accordance with international Standard for Engineering Classification of Rock Masses (GB50218-94),and finally get the value of BQ through correction and detailed classification based on influencing factors of a project.For cavity engineering,the values of Q and RMR for surrounding rock classification are estimated by fitted formulas.Main mechanical parameters of rocks are based on test data without and with field measurement.Those parameters correlative to the Standard and reduction values from test statistics are referred to.It is determined that for the expansion project of Yantan Hydropower Station,surrounding rocks at the main powerhouse and the tailrace tunnel are ranked as grade II and grade III respectively." @default.
- W2381999340 created "2016-06-24" @default.
- W2381999340 creator A5077275657 @default.
- W2381999340 date "2009-01-01" @default.
- W2381999340 modified "2023-09-28" @default.
- W2381999340 title "Classification and Mechanical Properties of Surrounding Rocks at Expansion Project of Yantan Hydropower Station" @default.
- W2381999340 hasPublicationYear "2009" @default.
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