NONLINEAR CREEP MODEL OF DEEP GANGUE BACKFILLING MATERIAL AND TIME-DEPENDENT CHARACTERISTICS OF ROOF DEFORMATION IN BACKFILLING MINING

Nonlinear Creep Model of Deep Gangue Backfilling Material and Time-Dependent Characteristics of Roof Deformation in Backfilling Mining

With the gradual increase in mining depth of coal resource exploitation, deep backfilling mining has effectively solved the impact of strong deep mine pressure and strong mining disturbances.However, after deep backfilling mining, the backfilling material is subjected to high stress for a long time, and its viscoelasticity has a significant impact

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The Ibero-Romance rhotics

The two rhotic consonants of Ibero-Romance languages are characterised by their very specific distribution and by the prosodic weight of one of ucsb gaucho blue them.Data has hitherto suggested a geminate-to-single contrast for the pair of rhotics.It will be shown here that this view must be rejected in favour of another which sees these putative g

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