Results 11 to 20 of about 380,756 (310)
Research on Cutting Characteristics of Rock Plate with Two Sides Fixed and Two Sides Free
Advances in Materials Science and Engineering, 2020 Conical pick wear is an urgent problem in the roadway excavation caused by hard rock difficult to break. The traditional method of increasing cutting power to improve cutting performance of conical pick significantly increases pick wear.
Zhenguo Lu +4 more
doaj +1 more source
A theoretical model for predicting the Peak Cutting Force of conical picks [PDF]
, 2013 In order to predict the PCF (Peak Cutting Force) of conical pick in rock cutting process, a theoretical model is established based on elastic fracture mechanics theory. The vertical fracture model of rock cutting fragment is also established based on the
Du Changlong +3 more
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Investigation of fragment separation during a circular saw blade cutting rock based on ANSYS/LS-DYNA
Scientific Reports, 2022 Circular saw blades are widely used in stone processing. The circular saw blade cutting hard rock numerical simulation model based on ANSYS/LS-DYNA was established to investigate the complex dynamic problem in rock cutting.
Zhiwen Wang +4 more
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Analitic Investigation of the Regularities of Changing Dust Concentration During the Abrasive Decrease of Stone Structures [PDF]
, 2018 In the process of repair or restoration of building structures, it is often necessary to strengthen building structures from limestone-shell rock, concrete, reinforced concrete, hard materials-granite, basalt, etc.
Bezpalova, A. (Alla) +2 more
core +2 more sources
Shock and Vibration, 2021 The diamond sawblade has been widely used in the field of rock mining and processing. This article, through the establishment of a numerical simulation model of diamond sawblade cutting rock, studies the influence of the distance between the diamond ...
Qingliang Zeng +4 more
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Drag pick cutting tests: A comparison between experimental and theoretical results
Journal of Rock Mechanics and Geotechnical Engineering, 2018 This paper aims at reporting the results of a number of drag pick cutting tests on selected igneous rock samples to compare the experimentally determined maximum cutting force (FC′) values with theoretically estimated ones. First, a review on theoretical
Serdar Yasar, Ali Osman Yilmaz
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IEEE Access, 2020 Rock properties (e.g., brittleness, fracture toughness, hardness, compressive strength and tensile strength), cutting parameters (e.g., cutting depth, attack angle, wedge angle, cutting velocity) and confining stress are closely related to rock ...
Jiuqun Zou, Weihao Yang, Jihuan Han
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A novel coal-rock cutting state identification model based on the Internet of Things
International Journal of Cognitive Computing in Engineering, 2023 The sudden change in the interface between coal-rock mass can lead to the increased abrasion of picks and the failure rate of mining machinery. The safe and efficient coal-rock identification technology is the key to realize the intelligent control of ...
Dong Song, Chitra Venugopal
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Numerical Simulation of Rock Plate Cutting with Three Sides Fixed and One Side Free
Advances in Materials Science and Engineering, 2018 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.
Zhenguo Lu +4 more
doaj +1 more source
Study on the Improved Method of Wedge Cutting Blasting with Center Holes Detonated Subsequently
Energies, 2022 To acquire a satisfying cutting effect during medium-length hole blasting driving of rock tunnels, an improved wedge cutting blasting method with supplementary blasting of the center holes was proposed.
Bing Cheng +5 more
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