Rock macro-indentation plays a fundamental role in mechanical rock breaking for various
rock engineering application, such as drilling, tunneling, cutting, and sawing. Over the past …

Microcracks have a significant effect on the physical and mechanical properties of rocks.
Inducing artificial microcracks in rocks can reduce rock strength and decrease the energy …

Rock indentation and fragmentation behavior under dynamic and quasi-static loads have
significant impacts on the exploration drilling for oil, gas, and geothermal energy. In this …

Mechanical mining and excavation in deep metal mines can be regarded as the process of
crushing hard rock by conical pick indentation. In this study, a confining pressure loading …

Abstract The Inserted-tooth Hob has been widely used in underground engineering when
the mechanical rock drilling direction downward. Based on the mechanical parameters of …

Rocks containing varying degrees of microcracks have a significant influence on their
mechanical behavior. Understanding the effect of pre-existing microcracks (PEMs) on rock …

Various novel assisted drilling technologies enhance rock fragmentation performance by
introducing microcracks on the rock surface to weaken rock strength. However, the …

The cluster down-the-hole hammer reverse-circulation drilling technology is an attractive
approach for achieving a high rate of penetration (ROP) through the" small hole drilling …

The fluidic down-the-hole (DTH) hammer drilling is generally regarded as one of the best
means for hot dry rock (HDR) drilling. The fluid oscillator, as the core part of the fluidic DTH …

High-temperature conditions make rock engineering vulnerable to instability and failure
under dynamic loading, investigating dynamic mechanical behavior of rocks under high …