The Study Of "the Three Machines" Necessary In The High-dipping Special Thick Seam Longwall Top-coal Caving Fully Mechanized Coal Face In Wang Jiashan Mining

The mining technology of the high-dipping special thick seam longwall top-coal caving fully mechanized is now still the technical difficult problem which domestic and foreign did not yet solved, this article to the "the three machines" necessary in the high-dipping special thick seam longwall top-coal caving fully mechanized face the necessary essential technology to conduct the research, proposed the reasonable determination "the three machines" the necessary method, namely hydraulic support, coal-mining machine and scraper conveyor three kind of equipment technical performance, space position, connection size and productivity best coordinate question. Solved the high-dipping special thick seam long wall top-coal caving mechanized equipment which in mining faced to glide down, the support falls, in front of braves to roof-fall, the support top-beam meets goes against in the reality, the working surface reason appear many technical difficult problems ,such as the triangle roof and the under reason appears the triangle floor caused to support difficulty, support easy to squeeze and fights, the coal mining machine upwardly tows difficult, applies the brake the reliability low, on the rocking shaft lubrication effect difference, the working surface scraper conveyer and reprint machine joining excessive and the working surface returns picks the craft to be complex and so on. Meanwhile, the supplementary equipment key component conducts the design research to "the three machines", including: The basic support working resistance determination, the support key component, the coal mining machine key component research and design as well as several essential technologies research in the face operation.In the research process, uses the method which the theoretical calculation, the model experiment and the field trials to pick. Through eight month-long mining experiments in Wang Jiashan mining 44,407 working face of Jinyuan coal company, the working surface...