2001•Unpublished venueRequires access

The reliability analysis of the velocity ratio of coal cutting to support moving in fully mechanized top-coal caving face

Shanming Luo, Miao Xie-xing

Abstract

From the angle of reliability, the system of coal cutting and support moving of high productivity and efficiency work face is analyzed in detail by using the interference theory of strength and stress distribution. The coupling equation and calculation formulas of the velocity ratio of coal cutting to support moving are established. The characteristic curve of the velocity ratio consists of three different areas, so the ratio of different work face should be selected according to different demand of reliability. The velocity ratio of coal cutting to support moving can be selected from 1.3 to 1.5 in high productivity and efficiency work face, or from 1.5 to 1.8 in super-length fully mechanized top-coal caving face.2figs.,2tabs.,6refs.

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Key concepts: Coal, Reliability (semiconductor), Face (sociological concept), Work (physics), Productivity, Mining engineering, Engineering, Mechanical engineering