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Investigation of the influence mechanism of rock damage on rock fragmentation and cutting performance by the discrete element method [PDF]
Royal Society Open Science, 2019 Rock damage is one of the key factors in the design and model choice of mining machinery. In this paper, the influence of rock damage on rock fragmentation and cutting performance was studied using PFC2D.
Si-fei Liu +3 more
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Generalized equation for calculating rock cutting efficiency by pulsed water jets
Journal of Rock Mechanics and Geotechnical Engineering, 2019 One of the promising methods for rock cutting technology is the use of high-speed water jets. In order to improve the cutting capacity of water jets without increasing the hydraulic power of equipment, pulsed water jets are basically used to increase the
Andrey Polyakov +3 more
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Machines, 2022 Conical picks are applied to rock breaking, and the cutting parameters greatly influence cutting performance and rock damage. A conical pick rock-cutting numerical simulation model and software to provide a quantitative analysis of rock damage are ...
Zhiwen Wang +4 more
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Applied Sciences, 2023 The brittleness of rock is known to be an important property that affects the fragmentation characteristics of rock in mechanized rock cutting. As the interaction between the cutting tool and the rock (i.e., cutter forces, cutting efficiency, s/p ratio ...
Hoyoung Jeong +2 more
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Applied Sciences, 2023 Continuous mining is one of the development goals for metal mines, and the application of coal mining equipment represented by shearers provides a reference for continuous mining. However, rock in metal mines is generally harder than coal, making cutting
Weipeng Xu +6 more
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Science Progress, 2022 To improve the conical pick cutting performance by per cutting to the free surface. The cutting performance of rock and rock plate breaking are investigated by theoretical and experimental methods.
Zhenguo Lu +5 more
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Fold catastrophe analysis of constitutive model of pick cutting coal with rock
Energy Reports, 2022 Considering the failure mechanism of pick cutting coal & rock, combined with the cutting load test, the single pick load of cutting coal & rock is obtained and analyzed, based on the load of single coal & rock caving load change process in ...
Chenxu Luo +4 more
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Numerical Simulation of Conical Pick Cutting Arc Rock Plate Fracture Based on ANSYS/LS-DYNA
Advances in Materials Science and Engineering, 2020 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.
Zhiwen Wang +5 more
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Applied Sciences, 2022 During automatic and intelligent cutting at the coal mining face, complex geological conditions (fold structure, fault structure and magmatic intrusion) easily cause distinct occurrence conditions of coal rock seams (gangue, inclusion, or fault in the ...
Linlin Wang +3 more
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Advances in Materials Science and Engineering, 2020 Conical pick is a rock cutting tool that is commonly used in roadway driving. Pick wear frequently happens in the course of breaking hard rock. The current paper shows a new method to solve the problem of pick wear. The rock is preslit with the saw blade
Zhenguo Lu +4 more
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