Abstract:

Based on the practice in Liangshuijing mine, the domestic fully mechanized equipment selection key technology was studied by theoretical analysis and numerical simulation. The working face production can be increased by increasing operating rate, optimizing working length and increasing time to product. The hydraulic support model was ZY12000/20/40D. The scraper conveyor was started by high voltage variable frequency, which had advantage of reliable, energy saving and simply maintenance. The coal mining machine had the characteristic of high-power and dwarf-body. The installed power was 2150kW. The body height is 1549mm. The type of coal cutter was appropriate for medium-thickness seam, which ensured the velocity and operating rate.

Key words: medium-thickness seam, mechanized equipment selection, product coal 6Mt every year, frequency conversion softer start, machine body height