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本文根据解放层的现场观测资料,并在参考文献的基础上,对解放层的某些问題进行了探讨,主要是:1.硬岩层对卸压有无屏障作用;2.残余瓦斯压力问题;3.各因素在解放作用申的关系;4.解放作用与层间垂距的关系;5.解放层回采工作面沿走向的合理超前距离;6.解放作用会不会随时间延长而消失;7.抽放瓦斯的作用等。最后,对解放层作用机理作了阐述。
Based on the observation data of the liberated layer and some references on the basis of the literature, some problems of the liberated layer are discussed in this paper. The main problems are as follows: 1. Whether the hard rock layer plays a barrier role in pressure relief; 2. The residual gas pressure problem; 3. The relationship between the various factors in the emancipation of the role; 4. The role of liberation and the relationship between the vertical offset; 5. Liberated strata mining face along the trend of a reasonable lead; 6. Liberation will disappear with the passage of time; 7. The role of pumping gas and so on. Finally, the mechanism of the liberation layer is elaborated.