Technology Research on the Fourth Panel Mining Large Height Fully-mechanized Caving Mining in Shangwan Coal Mine

Abstract

According to the characteristics of the 1-2 coal seam of Shangwan coal mine 4th panel, this research analyzed the feasibility of sublevel caving hydraulic support in the fully-mechanized mining face through estimation method and numerical simulation calculation. This paper also researched the several factors that affect the caving property of top-coal, such as coal thickness, coal hosting depth, top-coal joint fissure, parting condition and caving height. In the meantime, the FLAC3D was used to simulate the caving progress. The results showed that the scheme is feasible. This method cannot only guarantee the stability of coal wall but also crush the coal by the force from the mine pressure hydraulic supports.

Keywords

• Shangwan coal mine
• 1-2 coal seam
• 4th panel
• large mining height
• fully-mechanized caving mining