On the apparatus and measuring method of silt impermeability .

粉土抗渗强度测定设备和方法研究。

With low voidage , few air vents and strong impermeability , the lifetime of the cells is lengthened .

空隙率低，贯通气孔少，抗渗透性能强，提高槽寿命。

Research on impermeability of aquiclude is the key to realizing mining without destroying water resource under shallow buried condition and analogue simulation is an important method for that .

隔水层的采动隔水性研究是实现浅埋煤层保水开采的关键，物理相似模拟是研究的重要手段。