【摘要】 顶煤变形破坏规律是综合机械化放顶煤开采基础理论的核心 .从顶煤体单元受力角度 ,在考虑围压衰减变化的情况下 ,对综放开采顶煤体的损伤破坏进行了理论分析 ,首次推导出综放开采过程中顶煤体受力单元的连续损伤破坏力学模型 .分析结果用鹤壁煤岩的实验资料进行了对比验证 ,结果表明所建模型是可靠的 .更多还原

【Abstract】 The deformation and failure of top coal is the center of basic research into fully mechanized top coal caving method. By considering the continuously declining of confining pressure in top coal during caving, the deformation and failure of top coal as load bearing elements was deeply investigated. Its mechanical model was put forward based on damage mechanics and statistical strength theory. The results were perfectly justified by the experimental data.更多还原