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《Coal Science and Technology》 2014-07
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Study on Support Parameters Optimization of High Stress Roadway in Deep Mine

WU Xin;No.4 Mine,Pingdingshan Tian'an Coal Industry Company Limited;  
In order to solve support difficult problems of the high stress roadway in a deep mine,based on the analysis on the mine roadway features during the multi seam combined mining process affected by the top seam coal pillars and mining induced,the paper systematically analyzed the mine strata pressure behavior and the support pressure distribution law of the mine high stress roadway. The analysis results showed that the bolt support system should ensure the surrounding rock in an elastic an a elastic plastic scope and the deformation features of the support system should meet the requirements of the surrounding rock deformation features. Therefore,a yield anchor and yield bolt support technology was provided. The engineering practices showed that with the application of the yield support technology,the deformation value of the mine roadway was reduced about 50%,the average convergence rate between the roof and floor was 4. 32 mm /d,the average convergence speed between the two sidewalls was 2. 70 mm /d and the surrounding rock deformation of the high stress roadway in the deep mine was effectively controlled.
【CateGory Index】: TD353
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