To analyze the strain-based non-Darcy permeability properties in crushed rock accompanying mass loss, a self-designed seepage testing system for crushed rock accompanying mass loss is adopted. Based on the collected lost mass and time series of seepage velocity and the pressure gradient, permeability parameters and strain are obtained. Time-dependent characteristics of permeability parameters and strain are divided into three stages. Permeability and strain increase while non-Darcy flow β factor and acceleration coefficient decrease with seepage process lasting. Exponential functions between permeability parameters and strain are established, where strain is the volumetric strain, being in good agreement with conclusions drawn by scholars before. The coefficients of exponential functions are analyzed combining with the lost mass ratio. It shows that a greater mass loss leads to a larger permeability, inducing the greater possibility of water inrush; samples with the lost mass ratio less than 5% have the least water inrush possibility.

中文翻译：

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伴随质量损失的碎石中基于应变的非达西渗透性

为了分析伴随质量损失的碎石中基于应变的非达西渗透率特性，采用了自行设计的伴随质量损失的碎石渗透测试系统。根据收集的损失质量和渗流速度与压力梯度的时间序列，获得渗透率参数和应变。渗透率参数和应变随时间变化的特征分为三个阶段。非达西流动β时渗透率和应变增加随着渗流过程的持续，因子和加速度系数减小。建立了渗透率参数与应变之间的指数函数，其中应变为体积应变，与以前学者得出的结论吻合良好。结合损失质量比分析了指数函数的系数。这表明更大的质量损失导致更大的渗透性，从而导致更大的涌水可能性。质量损失率小于5％的样品的浸水可能性最小。