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Experimental study of rock cutting characteristics of PDC cutter considering cutting effects of adjacent cutters
The in-depth and comprehensive understanding of cutting characteristics of cutter is the key basis for optimizing polycrystalline diamond compact...
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An experimental and numerical investigation on rock cutting behavior of specially-shaped PDC cutter
A theoretical model of ductile-brittle transition considering the cutter-rock friction was established, and the cutting force, mechanical specific...
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An experimental study on the cutting depth produced by abrasive waterjet: how do abrasive and rock properties affect the cutting process?
The abrasive and rock properties have a significant impact on the performance and profitability of abrasive water jet (AWJ) cutting. In the relevant...
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The identification method for rock strength and joint while drilling based on cutting energy density
Rock strength and joint parameters are the basic parameters reflecting engineering rock quality. The traditional rock strength testing method...
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Development of a rotary cutting test system and drilling experiment for rock mass
The mechanical parameters of a rock mass are the basis for studying the deformation and failure mechanisms and control methods of the surrounding...
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Surrounding rock stress distribution characterization via unit cutting energy
Drill-cutting methods play a vital role in rock burst monitoring and early warning. In this study, to improve the accuracy and efficiency of the...
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A New Linear Cutting Experimental Machine for Disc-Cutter Rock Breaking with High-Pressure Water Jets Assisted
Aiming at the low rock-breaking efficiency of TBM disc cutters in tough rock environments, A new experimental machine combined with the high-pressure...
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The ductile–brittle transition of rock cutting: insight from the discrete element method
The rate of penetration (ROP) improvement of the drilling bit is an eternal topic in drilling engineering. For polycrystalline diamond compact (PDC)...
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A Method for Selecting Optimum Microparameters’ Values in the Numerical Simulation of Rock Cutting
This paper deals with the numerical simulation of rock cutting laboratory tests using the discrete element method. The main objective is to provide a...
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Study on cutting performance of ceramic rock slab machined by rotating ultrasonic vibration
Ceramic rock slab is a kind of new material with the advantages of high hardness, wear resistance, and high-temperature resistance, and it is widely...
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Overburden Stress Arch Elevation Effect Induced by Roof Cutting and Destress Technique in Coal Mine Longwall Panel and Its Control Mechanism to Entry Surrounding Rock
The safe and efficient driving of the roadway along the gob is becoming an increasing challenge due to the influence of the integrity and bearing...
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The ductile–brittle failure mode transition of hard brittle rock cutting—new insights from numerical simulation
AbstractIn rock mass cutting, the two main failure modes are ductile failure and brittle failure, and it strongly influence the rock breaking...
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Granite cutting performance depending on the traverse speed in abrasive waterjet multi-cutting
The traverse speed influences the exposure time of the target to the cutting energy and the number of abrasive particles that impact the target. The...
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Calibration of different constitutive material models for Vosges sandstone due to its application in rock-cutting processes
The rock-cutting phenomenon can be considered a challenging problem from a numerical modeling point of view due to the complexity of the physics that...
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Experimental and numerical investigation on rock breaking of conical pick assisted by abrasive water jet gridding pre-cutting method
In the excavation of rock tunnels, conical picks face lots of problems, such as insufficient rock breaking capacity, low rock breaking efficiency and...
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The Mechanism of Particle Impact-Assisted Rock Cutting in Hard Brittle Granite
The deep rocks generally present high strength, plasticity and abrasiveness, which greatly limit the efficient drilling of the bit. Particle impact...
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Numerical Investigation of Rock Cutting Modes with Conical Picks under Different Confining Pressures and Cutting Spaces
This paper focuses on the mechanism of rock cutting with conical picks under different confining pressures. First, the 2-dimensional numerical model...
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Multi-response Optimization for Evaluating Output Responses in Rock Cutting Through Grey-Fuzzy-Coupled Taguchi Technique
The main target of this research is to examine the performance characteristics of uncoated and coated tungsten carbide-cobalt rock cutting bits on...
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Proposing several hybrid SSA—machine learning techniques for estimating rock cuttability by conical pick with relieved cutting modes
During excavation of roadheader, specific energy (SE) is a key component of rock cuttability evaluation and cutting head design. Previous studies...
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A Case Study of Cutting Performance by a Transverse Cutting Head Based on Three-Dimensional Particle Flow Model
Roadheaders have been increasingly used in a variety of tunnel cross-sections and roadway excavations. The appropriate setting of key construction...