Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model
Joint Authors
Wen, Jinhao
Wen, Zhijie
Shi, Shaoshuai
Cao, Zhiguo
Jing, Suolin
Jiang, Yujing
Tian, Lei
Zuo, Yu-Jun
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-02
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
To accurately detect the development height of the water flowing fractured zone (WFFZ) in the overlying strata of the working face after mining under water and to ensure the safety and reliability of coal mining, the coal seam located under Weishanhu Lake in the Jisan coal mine was used as the experimental system.
A similar laboratory simulation and water injection-based fracturing test system were used with the working face before and after mining activity to calculate, quantitatively detect, and qualitatively analyze the development height of the WFFZ in the overlying strata.
Meanwhile, a flow-stress-damage model and its criterion of fracture expansion were established based on the Mohr-Coulomb criterion, and the FLAC 3D software was used to simulate the deformation and failure of the overlying strata and the evolution of WFFZ during the mining process.
The results showed that the height ranges of the WFFZ beneath Weishanhu Lake of the Jisan coal mine as established by the above three methods are 30-45 m, 30-48 m, and 30-50 m.
In the process of mining, the caving zone and fractured zone are, respectively, subjected to tensile failure and shear failure.
The development height of the water flowing through the fractured zone in the overlying strata is basically consistent with the range of the “breaking arch.” The flow-stress-damage model and its criterion of fracture expansion can be applied to the fracture law of overlying strata under water under similar geological conditions.
American Psychological Association (APA)
Wen, Zhijie& Jing, Suolin& Jiang, Yujing& Tian, Lei& Wen, Jinhao& Cao, Zhiguo…[et al.]. 2019. Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model. Geofluids،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1152889
Modern Language Association (MLA)
Wen, Zhijie…[et al.]. Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model. Geofluids No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1152889
American Medical Association (AMA)
Wen, Zhijie& Jing, Suolin& Jiang, Yujing& Tian, Lei& Wen, Jinhao& Cao, Zhiguo…[et al.]. Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model. Geofluids. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1152889
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1152889