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- W2373996825 abstract "In order to grasp the evolution law of bolt stress and provide the reference for determining anchoring parameters,the evolution mechanism of anchoring force is studied.New conceptions of the first critical deformation and the second critical deformation for the bolted strata are put forward.It is revealed that the evolution of axial anchoring stress consists of three stages with the bolted strata deformation changing as follows: 1) the stage during which the anchoring force increases,2) the stage during which the greatest anchoring force keeps constant,and 3) the stage during which the anchoring force decreases.When the deformation of the bolted strata is smaller than the first critical deformation,the anchoring force will increase with the deformation growing.When the deformation of the bolted strata is between the first critical deformation and the second critical deformation,the greatest anchoring force will keep a constant and the distribution of the viscous anchoring force will transfer with the deformation growing.When the deformation of the bolted strata is larger than the second critical deformation,the anchoring force will decrease with the deformation growing.The value of the second critical deformation increases with the length of anchored part of bolt.Different anchored length should be adopted in roadways with different deformation characteristics to keep the anchoring force in the second stage of the anchoring force evolution during the whole deformation process of the roadway surrounding rock.A new point is presented that,in determining bolt anchored length,the deformation of road way should be taken into consideration." @default.
- W2373996825 created "2016-06-24" @default.
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- W2373996825 date "2010-01-01" @default.
- W2373996825 modified "2023-09-27" @default.
- W2373996825 title "Evolution Mechanism of Anchoring Stress and Its Correlation with Anchoring Length" @default.
- W2373996825 hasPublicationYear "2010" @default.
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