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中文摘要：
破碎页岩的渗透特性是影响煤矿保水开采和地下采空区灾害预防的重要因素之一．利用一种专门的破碎岩体压实渗透试验装置，在MTS815．02岩石力学伺服试验系统上完成了破碎页岩压实过程中的渗透特性测定，得到了轴向应力、渗透压差、水头梯度与渗流速度的关系，并分析了各种粒径破碎页岩在不同渗透速度下，轴向应力对渗透系数的影响．研究表明：当栽荷达到15MPa后，渗透压差急剧增大，渗透系数达到本次试验测到的最低值：4．7×10^-8 cm／s；在恒定的渗流速度下，破碎页岩岩样的渗透压差与轴压之间近似呈指数函数关系；在轴压一定的情况下，渗透速度对水头梯度的影响呈现小粒径大、大粒径小，破碎岩样的水头梯度与渗流速度之间呈指数函数关系；不同粒径破碎页岩的渗透系数与其压实状态密切相关，随轴压增加，渗透系数都相应降低，且两者之间呈对数函数关系．
英文摘要：
The permeability of broken shale is one of the important factors affecting the waterkeeping mining and the disaster prevention of the mined-out area. Using a special device together with the MTS 815.02 Rock Mechanics Test System, we tested the permeability of broken shale during its compacting process, getting the relation of the axial stress with differential seepage pressures and the relation of pressure gradient with seepage velocity. The effect of axial stress, grain size, and seepage velocities on the permeability coefficient is analyzed. The result shows that 1） the osmotic pressure difference increases sharply after the load reaches 15 MPa and the permeability coefficient reaches its minimum of 4.7×10^-8 cm/s,2） for a constant seepage velocity, the relationship between osmotic pressure difference and the axial stress can be expressed by an exponential function, 3） for a constant axial stress, the effect Of seepage velocity on pressure gradient is significant for small sized particles and not significant for large sized particles, and 4） the relationship of pressure gradient and seepage velocity can be also expressed by an exponential function, and the permeability coefficient of broken shale with different particle sizes is closely related to its compaction state and will decrease with the increase of axial stress, having a logarithm functional relation between them.
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