Research On Evaluation And Technology Decision Making System Of Thin Coal Seam Mining Based On Scientific Production Capacity

Currently,in thebackground of strictly controlling of coal production capacity and promoting sustainable development by the government, thin coal seams in China which are rich in reserves can be minable or not minabledepends on whether it can achieve scientific production capacity. In order to improve the scientific capacity of the thin coal seam, with the methods of mining science, technical economics, system dynamics, analytic hierarchy process and visual basic language, the economical recoverability of the thin coal seam was researched, and the research conclusions are as follows:1. Based on the demand of the scientific capacity for coal production mechanization,the influence factors and weight of the thin coal seam geological occurrence condition to the drum shearer and plough are determined by the analytic hierarchy process. The geological parameters can be input to the VB program to determine the geological recoverability– the adaptability to shearer or plow. Then, whether the thin coal seam can be mechanized mining and which mining technology is better can be judged.2. Based on the full cost concept of the scientific capacity,the impact of coal mining on the resources and environment is analyzed and quantified, as well as the total cost of thin coal seam mining. According to the dynamic evolution of mining cost, especially the environmental cost, the research on the modeling of the system dynamics is used to get the judgment conditions of the thin coal seam economical recoverability, i.e. the economical recoverability of thin coal seam is based on "output than input".3.Based on the demand of connotationsfor the scientific productivity,the construction of thin coal science capacity comprehensive evaluation index system and evaluation standard, in the thin coal seam can achieve scientific judgment on the basis of the production, and gives its suggestions for improving the direction of scientific productivity; evaluation system for empirical application in thin coal seam mining in Nantun coal mine, the mine has produced 3602 in thin coal seam face at that time under the conditions of the scientific production scale of 78, to achieve the scientific productivity, 3605 thin coal seam can be mined by drum shearer but can not achieve scientific productivityat this stage4. Three connotations of scientific productivity mechanical degree, production safety, production based on green degree, put forward to improve the scientific capacity of thin coal seam technology roadmap, based on fast fault theory, "with the bottom to the top" coal thickness fluctuation region and gob technology should be mainly used in thin coal seam the key to improve the scientific production technology system, and were successfully used in thin coal seam five 222120 3601 thin coal seam of Huaibei Mining Group 7122 thin coal seam in Qinan Coal Mine, Pingdingshan Coal Group Pingyu coal mine and Yanzhou Mining Group in Nantun coal mine, improve the scientific capacity of thin coal seam working face.