Application of extenics classification method to coal mining safety evaluation under thick unconsolidated formations and thin bedrocks
Abstract：Proposed a matter-element model for evaluating mining safety under thick unconsolidated formation and thin bedrock on the basis of the application of extenics engineering method and borehole data and the calculation of de- pendent function, matter-element theory and extenics set theory. Some factors, such as the specific capacity of the bot- tom aquifer, thickness of the bottom clay in the unconsolidated formation, thickness of the bedrock and height of water flowing fractured zone were chosen as the evaluation key factors in the matter-element model. The extenics classifica- tion method was used to classify the mining safety areas in the District No. 6 of an underground coalmine, and the min- ing practice verified the reliability of the classification.
Keywords：extenicsthick unconsolidated aquifercoal mining safety evaluationmatter-element modelwater flowing fractured zonecoal mining under water body
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 1783-1789 )