The theory and control technology for migration of roof strata and surface subsidence caused by mining operation are a part of the study of natural calamity all over the world.
煤矿开采引起覆岩及地表沉陷的控制理论与技术研究是涉及全球性灾害学科的研究内容之一。
On the basis of key rock strata theory, transferring rock beam structure and the law of the overlying strata displacement and the surface subsidence theory, we deduced offset error formula.
以关键层理论、传递岩梁理论以及采场上覆岩层及地表移动规律理论为基础，推导出岩梁抗弯刚度的误差补偿公式。
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