![](/images/graphics-bg.png)
A Fisher’s Criterion-Based Linear Discriminant Analysis for Predicting the Critical Values of Coal and Gas Outbursts Using the Initial Gas Flow in a Borehole
Joint Authors
Chen, Yujia
Li, Xiaowei
Tang, Jun
Jiang, Chenglin
Yang, Dingding
Chen, Zixian
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-05-11
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The risk of coal and gas outbursts can be predicted using a method that is linear and continuous and based on the initial gas flow in the borehole (IGFB); this method is significantly superior to the traditional point prediction method.
Acquiring accurate critical values is the key to ensuring accurate predictions.
Based on ideal rock cross-cut coal uncovering model, the IGFB measurement device was developed.
The present study measured the data of the initial gas flow over 3 min in a 1 m long borehole with a diameter of 42 mm in the laboratory.
A total of 48 sets of data were obtained.
These data were fuzzy and chaotic.
Fisher’s discrimination method was able to transform these spatial data, which were multidimensional due to the factors influencing the IGFB, into a one-dimensional function and determine its critical value.
Then, by processing the data into a normal distribution, the critical values of the outbursts were analyzed using linear discriminant analysis with Fisher’s criterion.
The weak and strong outbursts had critical values of 36.63 L and 80.85 L, respectively, and the accuracy of the back-discriminant analysis for the weak and strong outbursts was 94.74% and 92.86%, respectively.
Eight outburst tests were simulated in the laboratory, the reverse verification accuracy was 100%, and the accuracy of the critical value was verified.
American Psychological Association (APA)
Li, Xiaowei& Jiang, Chenglin& Tang, Jun& Chen, Yujia& Yang, Dingding& Chen, Zixian. 2017. A Fisher’s Criterion-Based Linear Discriminant Analysis for Predicting the Critical Values of Coal and Gas Outbursts Using the Initial Gas Flow in a Borehole. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1191691
Modern Language Association (MLA)
Li, Xiaowei…[et al.]. A Fisher’s Criterion-Based Linear Discriminant Analysis for Predicting the Critical Values of Coal and Gas Outbursts Using the Initial Gas Flow in a Borehole. Mathematical Problems in Engineering No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1191691
American Medical Association (AMA)
Li, Xiaowei& Jiang, Chenglin& Tang, Jun& Chen, Yujia& Yang, Dingding& Chen, Zixian. A Fisher’s Criterion-Based Linear Discriminant Analysis for Predicting the Critical Values of Coal and Gas Outbursts Using the Initial Gas Flow in a Borehole. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1191691
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1191691