Abstract: This article recommends a mining technology for thin coal seam with mixed mining, exceeding length and double unit face mining method innovated by Tianchen coal mine. Based on the management errtropy theory, the paper establishes a new set of vectorial spaces, mathematical models of metric for assessing the production systems structural complexity and proposes the theorems of simplification and complexity decreasing for production systems of enterprises. A case study of the Tianchen coal mine has been verified.

Key words: mining technology of low Seam, opposite pulling mining working face, structural complexity, informational content measure, management entropy theories