Study on the 2D Optimization Simulation of Complex Five-Hole Cutting Blasting under Different Lateral Pressure Coefficients
Joint Authors
Gao, Jing
Xie, Shizhen
Zhang, Xiantang
Wang, Hongli
Gao, Wenle
Zhou, Hongmin
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-06-10
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
With the decrease and depletion of shallow coal resources, the depth of mining is increasing.
The mechanism of high crustal stress blasting is not clear, and the effect of crustal stress on blasting effect is obvious.
The law of the differential detonation is similar without crustal stress.
The crustal stress of rock masses increases linearly with the increase in excavation depth, and the influence of crustal stress on blasting effect is great.
In order to study the rock-breaking process of complex differential blasting under deep high crustal stress, the instantaneous detonation of each model and the priority detonation of the central hole are numerically simulated.
The evolution law of the blasting crack and the method of optimizing blasting effect by differential blasting and increasing the aperture of the priority detonation hole under high crustal stress are put forward.
The authors proposed a study on the 2D optimization simulation of complex five-hole cutting blasting under different lateral pressure coefficients of 400 m and 800 m with software ANSYS/LS-DYNA and analyzed the evolution rules of blasting cracks and lateral pressure coefficients.
The results show that setting delayed detonation and hole diameter and optimizing blasthole spacing can optimize the rock-breaking effect under high crustal stress and different lateral pressure coefficients.
American Psychological Association (APA)
Gao, Jing& Xie, Shizhen& Zhang, Xiantang& Wang, Hongli& Gao, Wenle& Zhou, Hongmin. 2020. Study on the 2D Optimization Simulation of Complex Five-Hole Cutting Blasting under Different Lateral Pressure Coefficients. Complexity،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1142029
Modern Language Association (MLA)
Gao, Jing…[et al.]. Study on the 2D Optimization Simulation of Complex Five-Hole Cutting Blasting under Different Lateral Pressure Coefficients. Complexity No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1142029
American Medical Association (AMA)
Gao, Jing& Xie, Shizhen& Zhang, Xiantang& Wang, Hongli& Gao, Wenle& Zhou, Hongmin. Study on the 2D Optimization Simulation of Complex Five-Hole Cutting Blasting under Different Lateral Pressure Coefficients. Complexity. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1142029
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1142029