陷落柱填隙物相似材料制备及渗流特性测试

Preparation of Collapse Column Fillings Similar Materials and Experiment of Its Seepage Characteristics

为了制备“高耐水性、低强度、高渗透率”的陷落柱填隙物相似材料,利用水泥、风积沙、粘土、滑石粉等制备了多组试验样品,经过27 d的浸水养护,选出3组“高耐水性”材料开展单轴压缩试验和渗透试验。3组试样的单轴抗压强度均小于0.5 MPa,满足“低强度”的要求。2号和3号试样的渗透率处于10-13 m 2数量级,达到“高渗透率”的要求。

In order to prepare similar materials of collapse column fillings with“high water resistance,low strength and high permeability”,multiple groups of test samples were prepared by using cement,eolian sand,clay and talc.After 27 d immersion curing,three groups of“high water resistance”materials were selected to carry out uniaxial compression test and permeability test.The uniaxial compressive strength of the samples in the three groups was all less than 0.5 MPa,which met the requirements of“low strength”.The permeability of the No.2 and the No.3 samples was in the order of 10~13 m 2,which met the requirement of“high permeability”.