中文摘要：

利用TSZ-2型三轴仪对不同含水率及不同百分比含量的膨润土、高岭土以及石英粉等所制成的人工土样进行了三轴剪切试验，获得了矿物成分及其含量、围压、含水率等因素对土力学性质的影响。结果表明：当膨润土的含量≤25％时，土的抗剪强度随膨润土含量的增加而提高，含量〉25％时，土的抗剪强度随膨润土含量的增加而降低；当试样中高岭土含量≤37．5％时，土的抗剪强度随高岭土含量的增加而降低，含量〉37．5％时，情况则相反；在其他条件相同的情况下，随着试样中石英粉含量的增加，土的抗剪强度明显降低。矿物成分的含量对土抗剪强度的影响规律与土的含水率及围压均无关。土中粘性矿物成分增加，土的抗剪强度提高；对于矿物成分含量相同的试样，土的抗剪强度随含水率的增加而降低。

英文摘要：

The triaxial shear test of artificial soil samples which were made up of different moisture content and different percentages of bentonite, kaolin and quartz powder were conducted by using the TSZ-2 type triaxial apparatus, and the influence of the mineral composition and its content, confining pressure, moisture content and other factors on the soil mechanical properties were researched. The results showed that the shear strength of the soil increased with the in- crease of bentonite content when the bentonite content was less than or equal to 25% the shear strength of the soil reduced with the increase of bentonite content when the bentonite content was more than 25 %. The shear strength of the soil reduces with the increase of kaolin content when the kaolin content was less than or equal to 37.5 %, it had the opposite result when the kaolin content was more than 37.5%. Under the situation that other conditions were same, the shear strength of the soil reduced evidently when the quartz powder content increases. The influence rule of mineral composition on soil shear strength had nothing to do with the moisture content and confining pressure. The shear strength of soil increased with the increase of clay mineral composition content. For the samples of same mineral composition soil reduced with the increase of moisture content. Key words artificial soil, mineral composition, soil mechanica shear strength, principal stress difference content, the shear strength of 1 property, moisture content.