综采放顶煤工作面顶板涌水机理分析

摘要

通过对大佛寺煤矿40108工作面顶板涌水特征与涌水期间工作面顶板压力显现情况的对比分析,找出了顶板压力与涌水之间的相关性.并利用覆岩关键层理论以及采场覆岩在周期性来压作用下的变形破坏规律,分析了造成工作面涌水的机理,为工作面防治水工作提供理论依据.%Through comparative analysis of water gushing characteristics of apical plate at the 40108 working face of Dafosi Coal mine and the apical plate pressure manifestation at the working face during the water gushing,we can find out the the correlation between the pressure of apical plate and the water gushing. And the use of key stratum theory for overlying strata and the deformation and destruction rule under the action overlying strata in the periodical pressure, by the analysis of the working face water inrush mechanism, provide a theoretical basis for prevention and control of the work surface water.