DOI: 10.1155/2014/868041 Corpus ID: 108959074; Rock Breaking by Conical Pick Assisted with High Pressure Water Jet @article{Songyong2014RockBB, title={Rock Breaking by Conical Pick Assisted with High Pressure Water Jet}, author={Liu Song-yong and Chen Junfeng and Liu Xiaohui}, journal={Advances in Mechanical Engineering}, year={2014}, volume={6} }
Download scientific diagram | Rock breaking machine combination of diamond sawblades and conical picks: (a) the diamond sawblades and conical picks …
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In order to study the rock-breaking mechanism of compound impact drilling, the thermal-structure coupling simulation of the dynamic rock-breaking process with a single PDC cutter was investigated by using ABAQUS software. The influence of impact parameters on the rock-breaking performance and cutting temperature was analyzed.
A mechanical solution for excessive rock is the rotary breaker. Modern breakers of this type carry stone on through the machine and disgorge it as a refuse. The coal passes through the perforations in the drum and into the plant circuit. Modern rotary breakers are designed with open ends, to prevent rock from lodging in the spokes.
Performance of Conical Pick Cutting Rock Plate with One Side Constrain and Three Sides Free Zhenguo Lu1, ... Bilgin et al.7 and Balic et al.8 applied the linear cutting machine to study the main factors affecting the rock breaking performance and pointed out that the uniaxial compressive strength, tensile strength, static and dynamic elastic ...
conical PDC cutter breaks rock in a tensile and shear way; in the structure design of the conical PDC cutter, the optimized conical apex angle should be below 80°, and the smaller the vertex radius, the easier it is for the cutter to eat into the rock; the back rack angle has a great influence on the rock breaking performance of the conical ...
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The cutter is conical, its length is 152 mm, the maximum diameter is 62 mm and the advance speed is 1 m/min. The size of the rock block is 700 mm × 700 mm × 350 mm. The finite element model of rock breaking with assistance of water jet is shown in Fig. 1. The rock model is semi-infinite, the non-reflective boundary conditions are applied to ...
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The rock drilling rig comprises a first control unit (8) arranged on a carrier (1) and a second control unit (9) arranged to a rock drilling apparatus (4).The first control unit (8) and the second control unit (9) communicate with each other by means of a first data communications link (10).The rock drilling apparatus (4) has one or more sensors (11, 12, 15), the measuring results of which are ...
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Rock breaking using conical picks is a complex process affected by several factors; its performance is directly related to the excavation rate of rock tunnels, which is important in terms of the economic benefits and social impact of a project. This study investigates the effects of cutting depth and water pressure on rock breaking performance using a conical pick …
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Download Citation | On Feb 29, 2020, Zhenggang Guo and others published Rock-Breaking Performance of Cutters of Tunnel Boring Machine in Broken Coal Rock Formation | Find, read and cite all the ...
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Download Citation | Rock breaking mechanism analysis and structure design of the conical PDC cutter based on finite element method | In order to explore the rock breaking mechanism of …
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In order to explore the rock breaking mechanism of the conical Polycrystalline Diamond Compact (PDC) cutter, and better design the cutter's structure, a finite element model is proposed. Simulation results show that: the conical PDC cutter breaks rock in a tensile and shear way; in the structure design of the conical PDC cutter, the optimized conical apex angle should be below …
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