The mechanical model for the floor heave of shear dilation type and its analytic calculation diagram are established in accordance with the constitutive relationship of laneway wall rock.

• 根据巷道围岩本构关系,建立了剪胀底臌力学模型及分析计算简图,根据岩土体主动和被动压力作用原理,导出了巷道底板塑性区发展范围、深度及底板压力解析计算式。