Experiment on Conical Pick Cutting Rock Material Assisted with Front and Rear Water Jet

Liu, Xiaohui; Liu, Songyong; Li, Lie; Cui, Xinxia

doi:10.1155/2015/506579

Cited by 18 publications

(10 citation statements)

References 26 publications

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“…In that paper, the water jet was directed in front of the tool. Liu et al [9][10][11][12][13] performed numerical simulations and experiments to study the rock breaking performance of di erent con guration modes of conical tools assisted by water jets.…”

Section: Introductionmentioning

confidence: 99%

Effect of Abrasive Concentration on Impact Performance of Abrasive Water Jet Crushing Concrete

Liu

Tang²,

Geng

et al. 2019

Shock and Vibration

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It has been found that the impact performance of water jets can be changed by its properties, which include pressure, additive, and mode of jet. Thus, an abrasive water jet (AWJ) has been developed as a new method. However, there is little research on the effect of abrasive concentration on the impact performance of abrasive jets. Thus, the SPH method is used to establish an abrasive water jet crushing concrete model to study the effect of abrasive concentration on the impact force, concrete internal energy, abrasive particle distribution, crushing depth, and damage and crushing efficiencies under different concrete compressive strengths and abrasive densities. The results indicate that there is little effect of the abrasive concentration on the peak impact force under different compressive strengths and abrasive densities, while the mean impact force tends to increase linearly with the abrasive concentration. The internal energy of the concrete increases stepwise with the abrasive concentration under different compressive strengths and abrasive densities. The concentration of 10%∼20% is the rapid increasing stage. The crushing depth and damage efficiencies are all maximum at a concentration of 20% under different compressive strengths and abrasive densities. After the concrete was impacted by the water from the water jet, it is divided into rebounding particles and intrusive particles. The more the intrusive particles, the easier the concrete to be crushed and damaged.

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Section: Introductionmentioning

confidence: 99%

Effect of Abrasive Concentration on Impact Performance of Abrasive Water Jet Crushing Concrete

Liu

Tang²,

Geng

et al. 2019

Shock and Vibration

Self Cite

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show abstract

“…And some scholars have taken tests to research the rock cutting. Liu et al [7] presented a kind of rock drilling method and conducted tests to research its cutting performance. Too many tests about the process of chip formation were to be provided by Che et al [8].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Conical Pick Cutting Arc Rock Plate Fracture Based on ANSYS/LS‐DYNA

Wang

Zeng

et al. 2020

Advances in Materials Science and Engineering

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The new method of rock breaking based on the combination of circular sawblade and conical pick was proposed to improve the effectiveness of hard rock breaking. The numerical simulation method was applied to research the conical pick cutting arc rock plate by ANSYS/LS-DYNA. The conical pick cutting arc rock plate numerical simulation model was established to research the influence of arc rock plate structural parameters and cutting parameters on cracks formation and propagation of the arc rock plate and the cutting force in the process of conical pick cutting arc rock plate. The amount of cracks is positively correlated with arc rock plate thickness, the cutting speed, and distance of cutting point to arc rock plate central axis and negatively correlated with the cutting angle. The mean peak cutting force is positively correlated with the thickness of arc rock plate and the distance of cutting point to arc rock plate central axis; however, it is negatively correlated with the arc rock plate height and width and cutting angle of conical pick. The simulation results can be used to predict the conical pick work performance with various cutting parameters and structural parameters.

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“…Bilgin et al [7] and Kel et al [8] carried out the experimental researches with the linear cutting machine, in order to study the dominant rock properties that influenced on conical pick performance. Liu et al [9] proposed a new rock cutting method and carried out the experiment to study the cutting performance. e numerical simulations are more detailed and faster than the experimental research.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Rock Plate Cutting with Three Sides Fixed and One Side Free

Wan

Zeng

et al. 2018

Advances in Materials Science and Engineering

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In order to overcome conical pick wear in the traditional rock cutting method, a new cutting method was proposed on account of increasing free surface of the rock. The mechanical model of rock plate bending under concentrated force was established, and the first fracture position was given. The comparison between experimental and numerical results indicated that the numerical method is effective. A computer code LS-DYNA (3D) was employed to study the cutting performance of a conical pick. To study the rock size influenced on the cutting performance, the numerical simulations with different thickness, width, and height of a rock plate was carried out. The numerical simulation with the different cutting parameters of cutting speed, cutting angle, and cutting position influenced on cutting performance was also carried out. The numerical results indicated that the peak force increased with the increasing thickness of rock plate. With the increasing width and height of the rock plate, the peak force decreased and then became stable. Besides, the peak force decreased with the increasing of cutting position lxp/lx. Moreover, the peak force increased and then decreased with the increasing of cutting angle. The cutting speed has nonsignificant influence on the peak force. The strong exponential relationship was obtained between the peak force and cutting position, thickness, height, and width of the rock plate at a confidence level of 0.95. A binomial relationship was observed between the peak force and cutting angel. The cutting force comparison between traditional rock cutting and rock plate cutting indicated that the new cutting method can effectively reduce peak cutting force.

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Experiment on Conical Pick Cutting Rock Material Assisted with Front and Rear Water Jet

Cited by 18 publications

References 26 publications

Effect of Abrasive Concentration on Impact Performance of Abrasive Water Jet Crushing Concrete

Effect of Abrasive Concentration on Impact Performance of Abrasive Water Jet Crushing Concrete

Numerical Simulation of Conical Pick Cutting Arc Rock Plate Fracture Based on ANSYS/LS‐DYNA

Numerical Simulation of Rock Plate Cutting with Three Sides Fixed and One Side Free

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