Based on the investigation of the occurrence conditions of 2-2 coal seam in Shaanxi Shanmei Caojiatan Mining Co.,Ltd.,the strata behavior law in super large mining space and the characteristics of super high coal wall fall were explored,the key technologies for surrounding rock control of fully mechanized mining face with super large mining height were summarized,the support characteristics of the end zone of the working face were analyzed,and the end zone transition mode with large gradient and small step was put forward,achieving short and gentle transition with a 6 m height difference from the middle of the working face to both end roadways,as well as end zone support with high recovery of triangular coal.Based on the selection and matching of intelligent mining equipment for fully mechanized mining face,a complete set of mining equipment suitable for working face with 10 m super high mining height has been developed,achieving safety protection for super large mining space,efficient cutting of super thick coal seams,and smooth transportation of super large coal flow.An integrated intelligent collaborative operation control system with mining,supporting and transportation in the working face was built,as well as a multi-source system integration and data fusion analysis platform,supporting the safe and efficient mining of fully mechanized mining face with 10 m super large mining height.
10 m super high mining heightthick and extra-thick coal seammining technology and equipmentintelligent mining
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