Abstract
According to the characteristics of fully mechanized mining technique in thinner middle thick coal seam of Yuanzhuang coal mine, using the principle of fuzzy mathematics to build up the hierarchy analysis model of thinner middle thick coal seam mining technology of geological condition and comprehensive evaluation system. The influence factors and evaluation index of comprehensive evaluation model are obtained, the results can provide a theoretical basis and quantitative standard adaptability for thinner middle thick coal seam mining technology.
Highlights
At present our country mechanization technology for thin and thinner middle thick coal seam mining in thin is not mature, the coal seam mining is mostly used in blasting mining process
Fuzzy comprehensive evaluation method is a comprehensive evaluation method based on fuzzy mathematics, the method according to the membership degree theory to quality evaluation to quantitative evaluation, the clear results can solve the problem of quantifying fuzzy
(0 ≤ ≤ 1), as the evaluation more practical; (5) Reliability analysis of pre-harvest evaluation, using as the pre harvest evaluation reliability, = /, because the excavation uncovered always encounter changes in geological conditions of exploration has not been able to discover, so the ≪ 1; (6) The working face block evaluation, to block before mining evaluation based on mining, evaluation of reliability as the correction coefficient, the block valuation value = ×
Summary
At present our country mechanization technology for thin and thinner middle thick coal seam mining in thin is not mature, the coal seam mining is mostly used in blasting mining process. In the 1.3-2.0 m partial thin thick seam mining equipment manufacturing and difficult to use, the fully mechanized mining equipment especially thinner thick coal seam shearer technical performance is relatively backward, low production capacity and poor reliability. When thinner thick seam is deep, complex geological conditions, mining such seams of low economic efficiency, seriously restricting the development of thin, medium thick coal seam of coal mining technology [1,2,3]. It is necessary to geological conditions of thinner middle thick coal seam fully mechanized coal mining geological condition evaluation
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
