水砂充填料中的水流特性研究

利用某铀矿尾矿作为水砂充填料的水流特性研究，针对不同粒度的试样，进行常水头渗透试验.发现水的流量随着时间的推移而降到某一稳定值，渗透速度、渗透率和阻流量均可以用相应的数学表达式来描述；充填料的渗透速度由其所含最小颗粒控制，大颗粒的影响相对较小；渗透速度对孔隙率很敏感，在孔隙率从低到高的变化过程中，渗透性也会从低到高发生很大的变化.

Study on water flowing characteristics in water gravel mixed filling material

Studied the water flowing characteristics in gangue used as water-gravel-mixed filling material from one Uranic mine. For samples with different gravel granularity, seepage test was done under constant water head pressure and found that the flux of water will descend to a steady value with the time changing, and the relations among seepage rate, permeability and stopped-up water flux can be described in mathematics function. Secondly, that seepage rate of filling material is mainly determined by the smallest granule not big ones contained in it. Thirdly, that seepage rate is sensitive to porosity of filling material and will change obviously with porosity changing from low to high.