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Risk Assessments of Water Inrush from Coal Seam Floor during Deep Mining Using a Data Fusion Approach Based on Grey System Theory
Joint Authors
Guo, Yaru
Dong, Shuning
Hao, Yonghong
Liu, Zaibin
Yeh, Tian-Chyi Jim
Wang, Wenke
Gao, Yaoquan
Li, Pei
Zhang, Ming
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-02-27
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
With the increase in depth of coal mining, the hydrogeological complexity largely increases and water inrush accidents happen more frequently.
For the safety of coal mining, horizontal directional drilling and grouting techniques have been implemented to detect and plug the fractures and conduits that deliver high-pressure groundwater to coal mine.
Taking the grouting engineering performed at Xingdong coal mine at 980 m below sea level as an example, we collected the data of grouting quantity, the loss of drilling fluid, gamma value, water temperature, average water absorption, distance between grouting loss points, water pressure on coal seam floor, and aquifuge thickness at 90 boreholes in the mine to conduct grey relational analysis, first.
The analysis showed that the grouting quantity was highly correlated with all other factors.
Subsequently, grey system evaluation was used to evaluate the risk of water inrush from the coal seam floor.
The results of risk analysis illustrated that three water inrushes from Ordovician limestone occurred in mining face 2127, 2125, and 2222 in the study area were all located in the area with a risk score higher than 65.
Through grouting, the identified cracks were effectively blocked and waterproof layers beneath the coal seam floors were constructed to reduce the threat of water inrush.
By comparing the risk assessment results with three water inrush cases before grouting operation, we found that water inrush areas were consistent with the area of higher risk.
American Psychological Association (APA)
Guo, Yaru& Dong, Shuning& Hao, Yonghong& Liu, Zaibin& Yeh, Tian-Chyi Jim& Wang, Wenke…[et al.]. 2020. Risk Assessments of Water Inrush from Coal Seam Floor during Deep Mining Using a Data Fusion Approach Based on Grey System Theory. Complexity،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1144138
Modern Language Association (MLA)
Guo, Yaru…[et al.]. Risk Assessments of Water Inrush from Coal Seam Floor during Deep Mining Using a Data Fusion Approach Based on Grey System Theory. Complexity No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1144138
American Medical Association (AMA)
Guo, Yaru& Dong, Shuning& Hao, Yonghong& Liu, Zaibin& Yeh, Tian-Chyi Jim& Wang, Wenke…[et al.]. Risk Assessments of Water Inrush from Coal Seam Floor during Deep Mining Using a Data Fusion Approach Based on Grey System Theory. Complexity. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1144138
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1144138