Basic factors affecting penetration rate
Abstract
In this chapter, some of the basic factors such as rock strength and joint frequency will be examined, prior to more detailed treatment later. The conceptual probe drilling shown in Figure 6 penetrates a rock mass that has two levels of uniaxial strength (σ 1 and σ c 2 ) and two levels of joint frequency ( F l and F 2). Experience shows that when drilling and when boring, the more massive and higher strength combination: https://www.w3.org/1998/Math/MathML" display="block"> F 1 , σ c 2 , and Q 1(max)
Fields of Study & Subjects
Tunneling and Rock Mechanics
Rock Mechanics and Modeling
Geomechanics and Mining Engineering
Publication details
- Journal / source
- CRC Press eBooks
- Pages
- 12–18
- Publication date
- 19 January 2026
- Language
- EN
- Document type
- Book chapter