140

Nowadays 35-40 % of all the drilling works, performed on mining and
geological exploration enterprises, are made by air bottom hole cleaning, and the rest 60-65 %
are made by flushing liquids on water base. Air drilling and bottom hole cleaning due to low
heat conductivity of air generates high temperature at a borehole bottom thus negatively
affecting the efficiency of rock destruction tool; while drilling with water based flushing fluids
causes efficiency reduction of rock destruction tool due to formation of slurry mode at a
borehole bottom. This paper presents the results of the study of the factors negatively
affecting the performance of hammers.
 

  • Web Address
  • DOI
  • Date of creation in the UzSCI system 13-01-2023
  • Read count 140
  • Date of publication 13-01-2023
  • Main LanguageIngliz
  • Pages86-93
English

Nowadays 35-40 % of all the drilling works, performed on mining and
geological exploration enterprises, are made by air bottom hole cleaning, and the rest 60-65 %
are made by flushing liquids on water base. Air drilling and bottom hole cleaning due to low
heat conductivity of air generates high temperature at a borehole bottom thus negatively
affecting the efficiency of rock destruction tool; while drilling with water based flushing fluids
causes efficiency reduction of rock destruction tool due to formation of slurry mode at a
borehole bottom. This paper presents the results of the study of the factors negatively
affecting the performance of hammers.
 

№ Author name position Name of organisation
1 J A.T. researcher TSTU
2 R U.J. researcher Navoi state university of mining and technologies
№ Name of reference
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