Hydrological Characteristics of Ordovician Karst Top in a Deep Region and Evaluation of Its Threat to Coal Mining: A Case Study for the Weibei Coalfield in Shaanxi Province, China
Joint Authors
Li, Tao
Zhang, Jiarui
Gao, Ying
Cao, Xinqi
Liu, Hongyang
Zhang, Peng
Yang, Junwei
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-25
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
Widely distributed in North China, Ordovician karst is characterized by having high thickness, nonuniform aquosity, and significant water pressure-bearing properties.
Deep mining in North China is threatened by associated water hazards; hence, research on the hydrogeological characteristics of deep Ordovician karst is needed.
In this study, the Weibei coalfield in Shaanxi Province, China, was selected as the study area, especially mines in the Hancheng and Chenghe mining areas.
In situ experiments, including water pumping, water drainage, water injecting and water pressure, and laboratory experiments, were conducted to study the hydrogeological characteristics of the Ordovician karst top in the study area.
A comprehensive analysis was conducted on controlling factors for the development of the Ordovician karst top in the study area, and a method for evaluating the water inrush risk in coal mining areas based on karst hydrogeological characteristics was proposed.
The research results indicated that the Ordovician karst top in the study area was characterized by heterogeneity, vertical zonation, and partially filled properties, which were mainly controlled by two factors: sedimentation and tectonism.
The hydrogeological conditions of the Ordovician karst could be divided into three types: nonfilled and nonsignificant tectonism, filled and nonsignificant tectonism, and significant tectonism.
Among them, the filled and nonsignificant tectonism type Ordovician karst top type had a filling thickness of 20 m.
Based on karst hydrogeological characteristics, the methods were proposed to evaluate the water inrush risk in the coal mining floor.
The practical tests verified the methods.
American Psychological Association (APA)
Li, Tao& Zhang, Jiarui& Gao, Ying& Cao, Xinqi& Liu, Hongyang& Zhang, Peng…[et al.]. 2020. Hydrological Characteristics of Ordovician Karst Top in a Deep Region and Evaluation of Its Threat to Coal Mining: A Case Study for the Weibei Coalfield in Shaanxi Province, China. Geofluids،Vol. 2020, no. 2020, pp.1-17.
https://search.emarefa.net/detail/BIM-1165210
Modern Language Association (MLA)
Li, Tao…[et al.]. Hydrological Characteristics of Ordovician Karst Top in a Deep Region and Evaluation of Its Threat to Coal Mining: A Case Study for the Weibei Coalfield in Shaanxi Province, China. Geofluids No. 2020 (2020), pp.1-17.
https://search.emarefa.net/detail/BIM-1165210
American Medical Association (AMA)
Li, Tao& Zhang, Jiarui& Gao, Ying& Cao, Xinqi& Liu, Hongyang& Zhang, Peng…[et al.]. Hydrological Characteristics of Ordovician Karst Top in a Deep Region and Evaluation of Its Threat to Coal Mining: A Case Study for the Weibei Coalfield in Shaanxi Province, China. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-17.
https://search.emarefa.net/detail/BIM-1165210
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1165210