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在开采保护层防突时最重要的两个参数是层间岩石的法向厚度Ｍ（ｍ）和保护层工作面超前被保护层采掘作业的距离Ｌ（ｍ）。根据这两个参数提出消除突出的总体方案。总体方案包括论证和修正这两个参数的三个基本原则：①消除突出危险性的效果不仅受到煤岩体应力降低的影响，而且?
The two most important parameters in the process of mining outburst prevention are the normal thickness M (m) of the interlaminar rock and the distance L (m) from which the capping face of the protective layer is advanced by the protective layer. According to these two parameters proposed to eliminate outstanding overall program. The overall program includes three basic principles of argumentation and correction of these two parameters: (1) The effect of eliminating salient risks is not only affected by the stress reduction of coal and rock mass,