Geofluids, 2023 The rock chip information (shape, size, and particle size distribution) could comprehensively reflect the characteristics of rock mass and rock-breaking efficiency of TBM.
Chuigang Zeng +5 more
doaj +2 more sources
Research on influencing factors of rock breaking efficiency under ultrasonic vibration excitation
AIP Advances, 2023 The ultrasonic vibration rock-breaking technique shows broad application prospects in the hard-rock-breaking domain. The rock-breaking efficiency strongly depends on vibration parameters.
Zhanbiao Yang +3 more
doaj +2 more sources
Numerical investigation on rock‐breaking mechanism and cutting temperature of compound percussive drilling with a single PDC cutter [PDF]
Energy Science & Engineering, 2021 Compound percussive drilling technology is a new method to improve the rock‐breaking efficiency in deep hard formation. In order to study the rock‐breaking mechanism of compound impact drilling, the thermal‐structure coupling simulation of the dynamic ...
Wei Wang +5 more
doaj +3 more sources
Physical Simulation Experiment on the Rock Breaking Efficiency of Pulse Type Controllable Shock Wave. [PDF]
ACS OmegaGiven that conducting controllable shock wave tests in actual rock formations underground in coal mines affects coal mine production with the parameters required for equipment design and incurs significant costs, a series of ground tests were conducted separately. First, the impact of energy storage on rock breaking efficiency was analyzed.
Wang S +6 more
europepmc +4 more sources
Frontiers in Earth Science, 2023 As the main cutting tool of Tunnel Boring Machine (TBM) for rock-breaking, the rock-breaking efficiency of TBM disc cutters directly affects the TBM’s boring speed, which in turn affects the overall progress of the tunnelling project. Therefore, a simple
Guanghong Zhou +6 more
doaj +2 more sources
Study on the mechanism of multidimensional cutting teeth and the influencing factors of rock breaking efficiency. [PDF]
PLoS OneThe innovative cutting mechanism of multi-dimensional teeth presents a groundbreaking approach to drill bit design, particularly optimizing drilling efficiency in challenging geological formations such as interlayers and gravel-rich layers within the Changqing Oilfield.
Chen L +9 more
europepmc +3 more sources
Rotary cutting test on rock-breaking mechanism and efficiency of milled-tooth rolling cutters for shaft sinking by drilling methods [PDF]
Scientific ReportsTo address the low rock-breaking efficiency of milled-tooth rolling cutters used for shaft sinking via drilling methods in the Jurassic strata of Western China, this study conducted rotational cutting tests using a mechanical rock-breaking test platform.
Xiaoyun Wang +5 more
doaj +2 more sources
Influences of Microwave Irradiation on Rock-Breaking Efficiency of a Reduced-Scale TBM Cutter
Applied Sciences, 2023 To explore the influences of microwave irradiation on the rock-breaking efficiency of tunnel boring machine (TBM) cutters, a multimode cavity with a microwave power of 2100 W was used to conduct microwave irradiation tests on Chifeng basalt for different
Gaoming Lu +4 more
doaj +2 more sources
Engineering ReportsIn the process of rock breaking, the surrounding rock pressures exert a remarkable influence on the rock‐breaking efficiency of disc cutters. This study focuses on the rock‐breaking efficiency of tunnel breaking machine (TBM) disc cutters under varying ...
Peng Zhou +5 more
doaj +2 more sources
Research on rock breaking mechanism of PDC cutter under the action of ultrasonic vibration. [PDF]
PLoS ONEUltrasonic vibration technology has significant potential for breaking hard rocks. Understanding the optimal frequency for rock breaking under ultrasonic vibration can significantly reduce the cost of rock breaking and extend the service life of ...
Ruocheng Zhang +6 more
doaj +2 more sources