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本文针对采场底板的层状结构特征，建立了分析采场底板突水问题的结构模型。即，将破断前的老底视作板结构，破断后的块状体视作“砌体梁”结构。用板的极限分析理论求出了各种边界条件下底板的破坏极限荷载和形态及最大变形点位置。用Ｓ－Ｒ稳定理论分析了破断后底板块状岩体结构的稳定条件及范围。通过这种对采场底板结构系统性的力学分析，提出了治理底板突水的新的理论依据
In this paper, according to the stratum structural characteristics of stope floor, a structural model for analyzing stope floor water inrush was established. That is, the old floor before breaking is regarded as a slab structure, and the broken slab is regarded as a “masonry beam” structure. Using the limit analysis theory of the plate, the ultimate failure load and shape of the bottom plate and the position of the maximum deformation point under various boundary conditions were obtained. S-R stability theory is used to analyze the stability conditions and the range of the massive rock mass structure after broken floor. Through this systematic analysis of stope floor structure, a new theoretical basis for treating floor water inrush is proposed