Research on the Mechanism of Top Fall at the End Face of Fully Mechanized Caving Face and Surrounding Rock Control Technology
In view of the surrounding rock support problems such as the end face roof breakage in the mining process of 9102 fully mechanized top coal caving face,the engineering overview and roof and floor conditions of the working face were analyzed first,focusing on the analysis of the surrounding rock support difficulties in the stope and the end face roof fall mechanism,and then based on the specific mining experience,the surrounding rock control system of the stope of 9102 fully mechanized top coal caving face was designed,and then the field practice and effect analysis were carried out.Only partial slight wall caving accidents occurred during the pushing mining process of the working face,the overall stability of the end face coal and rock mass was high,and the safety production work was guaranteed.
fully mechanized caving working faceend face top platesurrounding rock fragmentationroof fall accidentcontrol system of surrounding rock in the mining area
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