During automatic and intelligent cutting at the coal mining face, complex geological
conditions (fold structure, fault structure and magmatic intrusion) easily cause distinct …

Understanding the contact mechanism between a cutting tool and rock is important in
mining, drilling, and tunneling industries as the physical contact can cause frictional ignition …

Mechanical excavation machines, like continuous miners and road headers, have been
broadly used in tunneling and underground and surface mines. The disc cutters are seated …

Point-attack picks have been widely used in mechanical excavators, such as roadheaders,
long-wall shearers, and trenching cutters. Different parameters (ie, cutting conditions and …

Unconventional tight oil and gas resources, including shale oil and gas, have become the
main focus for increasing reserves and production. The safe and efficient development of …

The accurate evaluation of rock abrasion is essential for the estimation of cutter costs in rock
cutting and drilling operations. In this study, a novel abrasion testing machine was …

Accurate prediction of the PDC bit wear trend and life is of great significance for improving
oil and gas drilling efficiency and reducing oil and gas production costs. However, due to the …

The Earth Mechanics Institute (EMI) was established at the Colorado School of Mines (CSM)
in 1974 to develop innovations in rock mechanics research and education. During the last …

Rotation of point attack picks in their tool holders is of crucial importance for an efficient
performance of machines used for tunnelling and underground excavations of rocks and …

The tendency of increasing dimensions of cutter–loader picks results in many departures of
the machine from face area during rock breaking in mines. This is governed by the current …