Study on Measuring and Test Technology of Ground Stress Field in No.10 Mine of Pingdingshan Coal Mining Group

In order to solve the mine pressure disaster problems occurred in the mining process at the deep section of No.10 Mine of Pingdingshan Coal Mining Gr oup, a casing stress releasing method was applied to study the stress field in the deep section of the mine.In the four regions of the mining area, the ground stress mea surements were conducted on 11 measuring points.In combination with the surrounding rock pressure test and temperature compensation test in the lab, the 3D ground stress and stress direction of each measuring point calculated was applied to establish the ground stress filed model in the deep section of the mine .According to the ac tual measured results, an analysis was conducted on the distribution law of the ground stress in the deep section of the mine. The ground stress field of the mining area would be the horizontal structure stress mainly, the strike of max horizontal main stress was in a north-east strike and was the same to the max main stress direction of the regional structure stress field.The vertical main stress value would be or a litle higher than the self weight stress.The max horizontal main stress, the min horizontal main stress and the vertical main stress value would have a relationship to be increased in linear with depth increased.