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- W2352227346 abstract "Based on uniaxial compressing strength test,the ultimate strength of fine sandstone in deep site is 83.698 2 MPa and its remaining strength is 0.Creep test with 8 classes of loading and unloading has been designed to determine the creep lower limit 27 MPa,beyond which the deep fine sandstone may have a creep behavior.Initial stages,i.e.,attenuating creep phases of different loading and unloading levels,are similar in creep displacements.Before destruction,every creep curves of fine sandstone specimen have not been involved in a steady creep state that the strain ratio is beyond zero.Up to specially designed loading,the complete creep course include 3 stages which has an important property of accelerative failure of the rock.The ratio of long-term strength to instantaneous strength of the fine sandstone is as high as to 94.39%,which indicates its strength has only weak relativity to time.Based on results of uniaxial compressing and creep tests,the fine sandstone is a key stratum to whole stability of rock engineering in deep site,and the determined mechanical index must be the uniaxial compressive strength." @default.
- W2352227346 created "2016-06-24" @default.
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- W2352227346 date "2010-01-01" @default.
- W2352227346 modified "2023-09-25" @default.
- W2352227346 title "Long-Term Strength Test and Application of Hard Fine Sandstone in Deep Site" @default.
- W2352227346 hasPublicationYear "2010" @default.
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