Abstract: Aiming at high stress level at coal mine soft rock serious floor heave, and to god source anhui coal chemical co., LTD. (Zou Zhuang coal) - 800 - m level and room as the background, on the basis of elastic mechanics and plastic mechanics theory the mechanics mechanism of floor heave is analyzed, based on the principle of overall stability of surrounding rock at the same time, the drafting of the technical scheme of the inhibition of the bass drum. The field measurement data show that the technical scheme is simple and effective, which fully demonstrates the scientificity and correctness of the research results. The results can not only be used for the research on the control mechanism and technology of floor heave in electromechanical chamber of high stress soft rock, but also for the research on the control mechanism and technology of floor heave in underground water bunker and large cross-section high stress soft rock roadway.