Research on Cutting Characteristics of Rock Plate with Two Sides Fixed and Two Sides Free
Joint Authors
Lu, Zhenguo
Zeng, Qingliang
Liu, Zhihai
Gao, Guanshun
Zhong, Peisi
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-24
Country of Publication
Egypt
No. of Pages
15
Abstract EN
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.
In the paper, a saw blade and conical pick combined cutting method is proposed based on increased free surface.
To research the fracture morphology and cutting force of rock plate, theoretical, numerical, and experimental methods are used.
By theoretical research, the bending mechanical model of rock plate bending is established.
The cutting position and the junction between the free sides and fixed sides are preferentially broken.
A numerical model combining the erosion and damage constitutive model is built, and the cutting process of rock plate was presented.
According to rock plate experiment, the peak cutting force increases with the increasing uniaxial compressive strength, thickness of rock plate, and cutting depth of conical pick and decreases with the increasing width and height of rock plate.
Exponential relationships exist between peak cutting force and thickness, width and height of rock plate, and cutting depth of conical pick.
Linear relationship exists between peak cutting force and uniaxial compressive strength.
The size of rock fragments increases with uniaxial compressive strength, width, and height of rock plate.
American Psychological Association (APA)
Lu, Zhenguo& Zeng, Qingliang& Liu, Zhihai& Gao, Guanshun& Zhong, Peisi. 2020. Research on Cutting Characteristics of Rock Plate with Two Sides Fixed and Two Sides Free. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1128321
Modern Language Association (MLA)
Lu, Zhenguo…[et al.]. Research on Cutting Characteristics of Rock Plate with Two Sides Fixed and Two Sides Free. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1128321
American Medical Association (AMA)
Lu, Zhenguo& Zeng, Qingliang& Liu, Zhihai& Gao, Guanshun& Zhong, Peisi. Research on Cutting Characteristics of Rock Plate with Two Sides Fixed and Two Sides Free. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1128321
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1128321