Development models for the drill bit lifetime prediction and bit wear types

Capik M., YILMAZ A. O.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, cilt.139, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 139
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.ijrmms.2021.104633
  • Dergi Adı: INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Compendex, Geobase, ICONDA Bibliographic, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
  • Anahtar Kelimeler: Drill bit lifetime, Bit wear types, Excavation volume, ROCK, DRILLABILITY, ABRASIVITY, PERFORMANCE, PENETRATION
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

This study presents the relationships between drill bit lifetime and mechanics, drillability and abrasive properties of rocks. Additively, worn-out of bit types were investigated. For that purpose, rock blocks were collected from tunnels. Regression analyses were employed to derive models for estimating the bit lifetime based upon drillability, and mechanical and abrasive properties of the rock. Results indicated that the bit lifetime values decrease with the increases of the uniaxial compressive strength, point load index, Brazilian tensile strength, Schmidt hardness (L-type and N-type) and Cerchar abrasivity index. However, the drill bit lifetimes increased with the increasing of Micro Deval abrasion, Brittleness values, Sievers' J-miniature drill, and excavation volume values. The statistical results showed that the most important parameters on the drill bit lifetimes were uniaxial compressive strength, Schmidt hammer, Sievers' J-miniature drill, and excavation volume. Furthermore, developed models would be used as guidance for practical applications.