The process of roof caving at face during its advance is impossible to describe by static and kinematic solutions. It is necessary to take into account unsymmetry of deformation due to the dynamic component of the roof caving process. To that end, it is required to undertake experimental and theoretical studies into the unsymmetrical displacement distribution. It seems to be possible to obtain additional information on deformation and caving of roof rocks from the elastic solution. The main factors to ensure correct formulation of problems are the statics, kinematics and dynamics of rock mass deformation, and the proposed description of the inelasticity zone in the host rocks-mineable seam system.

中文翻译：

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放顶煤顶板岩体应力和位移对顶板断裂的影响

工作面顶板崩落过程无法用静态和运动解来描述。由于顶板崩落过程的动态分量，有必要考虑变形的不对称性。为此，需要对不对称位移分布进行实验和理论研究。似乎可以从弹性解中获得有关顶板岩石变形和崩落的附加信息。确保正确提出问题的主要因素是岩体变形的静力学、运动学和动力学，以及对母岩-可采煤层系统中非弹性区的拟议描述。