Optimization for Prediction Indexes of Coal and Gas Outburst in Coal Roadway Excavation Working Face Based on Grey Synthetically Relational Degree

Abstract:

Coal and gas outburst is a strong dynamic phenomenon in the process of coal mining, which the fierce degree and destroy effect is beyond imagination, also can cause the occurrence of secondary disasters, such as fire, gas explosion. Especially in coal roadway excavation face, it is frequent. Therefore, the reasonable prediction and evaluation for associated factors of coal and gas outburst in coal roadway excavation working face is important and guiding significant for coal production, sustained and healthy development. With the mathematical model of grey synthetically relational degree analysis, we gain quantitative analysis of six prediction indexes of coal and gas outburst, and determine the best predictors, provide quantitative basis for the selection of coal and gas outburst prediction indexes.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 647-652
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.647
• Online since: May 2012
• Authors: Xiang Zeng Du
• Keywords: Coal and Gas Outburst, Coal Roadway Excavation, Grey Synthetically Relational Degree, Prediction Index

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