In view of the problems such as many broken rocks,difficult roof management,poor transport aircraft slope control and others during the coal mining working face passing through the fault group structures.Taking the 22612 fully mechanized mining face of Guandi Coal Mine as an example,theoretical analysis and engineering practice methods are adopted.Based on the analysis of the coal mining face passing through the fault structures,the technique of passing through different natures of fault groups is proposed,and the selection basis for the two parameters of the slope of the transport aircraft along the pushing progress and the cutting eye direction are clarified,at the same time,a slope measurement method for transport aircraft is proposed,which can scientifically and effectively measure and control the slope of transport aircraft,and clarify the management measures for the fractured roof during passing through the fault structures.The application results show that the frame number of broken rock decreases by 35.3％;the daily number of coal cutting blades increases by 1-1.5,and the monthly output increases by 20 000 tons,whilst the consumption amount of coal mining machine cutting teeth and three machine accessories also decreases by 20％.The roof management during the entire period of passing through the structures is safe and effective.
关键词
综采工作面/过断层群/顶板控制
Key words
fully mechanized mining face/passing through fault group/roof control
维普
万方数据