目前国内所进行的回采工作面顶板来压预报,都是通过测定工作面两端上下顺槽顶底板位移的变化来进行的。众所周知,工作面上覆岩层的活动对上下顺槽及工作面本身的影响不尽一致,例如,工作面顶板来压就不均匀,常分为上、中、下三段,因而顺槽预报的方法必然存在很大局限性。为解决这一难题,本文研究了工作面顶板来压与支承压力变化的不同步关系,利用支承压力的变化规律来预报工作面来压,初步探索了一条预报顶板来压的新途径。 Currently carried out in the domestic mining face to predict the roof, are measured by the work of both sides of the upper and lower cistern floor displacement changes. As we all know, the activity of the overburden of the working face affects the upper and lower grooves and the working face itself. For example, the pressure on the working face roof is not uniform and is often divided into upper, middle and lower sections, The method is bound to have a lot of limitations. In order to solve this problem, this paper studies the unsynchronized relationship between the pressure on the roof and the pressure on the supporting surface, and predicts the pressure on the working face by the variation of the supporting pressure. A new way of forecasting the pressure of the roof is explored.