Study on Presplitting Blasting the Roof Strata of Adjacent Roadway to Control Roadway Deformation
Joint Authors
He, Manchao
Yang, Xiaojie
Hu, Chaowen
Zhou, Yubo
Wang, Haohao
Liu, Xiaoyu
Zhen, Enze
Ma, Xingen
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-16
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
In order to solve the problem of roadway deformation based on the theory of “short cantilever beam by roof cutting,” the method of “pressure relief by roof cutting in the adjacent roadway” is proposed.
Through presplitting blasting the roadway hard rock layer, the stress propagation path is cut off, and the surrounding rock stress environment of the roadway is improved, to achieve the purpose of controlling the deformation of the roadway caused by stress.
Through theoretical analysis, it is determined that the depth of the presplitting blasthole is 17 m, and the angle with the vertical direction is 10°.
Based on in situ measurements and tests, by presplitting blasting the roof strata of the adjacent roadway, the maximal value of the working resistance of the hydraulic support in the presplitting blasting side of the working face decreased by 24.9%, and the average volumes of the maximum floor heave, the maximum roof subsidence, and the maximum ribs displacement were reduced by 50.1%, 34.9%, and 41.7%, respectively.
This method completely changes the traditional thought patterns of “reinforcing support” to control roadway deformation from “strong support” to “pressure relief.” It provides a new idea for controlling the roadway deformation.
American Psychological Association (APA)
Yang, Xiaojie& Hu, Chaowen& He, Manchao& Wang, Haohao& Zhou, Yubo& Liu, Xiaoyu…[et al.]. 2019. Study on Presplitting Blasting the Roof Strata of Adjacent Roadway to Control Roadway Deformation. Shock and Vibration،Vol. 2019, no. 2019, pp.1-16.
https://search.emarefa.net/detail/BIM-1211126
Modern Language Association (MLA)
Yang, Xiaojie…[et al.]. Study on Presplitting Blasting the Roof Strata of Adjacent Roadway to Control Roadway Deformation. Shock and Vibration No. 2019 (2019), pp.1-16.
https://search.emarefa.net/detail/BIM-1211126
American Medical Association (AMA)
Yang, Xiaojie& Hu, Chaowen& He, Manchao& Wang, Haohao& Zhou, Yubo& Liu, Xiaoyu…[et al.]. Study on Presplitting Blasting the Roof Strata of Adjacent Roadway to Control Roadway Deformation. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-16.
https://search.emarefa.net/detail/BIM-1211126
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211126