Halimendikov E. Development of rock bolt parameters for combine maintenance system due to longwall mining in complex geological environment - Manuscript

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0411U003166

Thesis Registration Form

0411U003166.pdf

Applicant for

Specialization

  • 05.15.02 - Підземна розробка родовищ корисних копалин

05-04-2011

Specialized Academic Board

Д 11.184.02

Essay

New methods for rock bolt tests and two level combine systems have been developed to maintain a roadway stability due to longwall mining. Linear dependence of plastic energy from plastic deformation of bolt washer and logarithm dependence of this energy from distance to longwall face have been found. Rock bolt bearing capacity was determined as a fuction of plastic deformation of bolt washer. Asymmetrical behavior of entry has been understood for an entry that is maintained behind the longwall that has been directly ventilated. Law of plastic energy evolution was clarified and optimal range for washer rigidity were found. Bolt washer dissipates maximum ground pressure energy in this range.

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Files

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