中文摘要：

为了研究胶凝堆石料的特性，进行了大三轴固结排水剪切试验，得出不同胶凝掺量的应力与应变关系、体积应变与轴向应变关系，分析比较了不同围压、不同胶凝掺量对胶凝堆石料剪胀特性的影响。试验结果表明：围压相同时，胶凝掺量增大，破坏偏应力和残余强度都增大，而轴向偏应变减小；胶凝掺量相同时，围压增大，破坏偏应力、残余强度和轴向偏应变都增大；不同围压、不同胶凝掺量的体积应变与轴向应变关系曲线均表现出不同程度的剪胀性，且胶凝掺量越大，围压越小时，胶凝堆石料剪胀现象越明显。

英文摘要：

In order to study the mechanical property of cement sand and gravel （ CSG） dam material, a large triaxial test was conducted to obtain the relation between different cement content and different confining pressure on the stress-strain and the relation between the volumetric strain and axial strain. Additionally, we also analyze the influence on the shear dilatation of CSG dam material of different cement content and different confining pressure. The results show that when the confining pressure is the same, with the increase of cement content, the peak strength and residual strength will increase while the peak axial strain will decrease. Furthermore, when the cement content is the same, with the confining pressure increasing, peak strength, residual strength and peak axial strain will increase. Different degrees of the shear dilatation of CSG material are showed because of the influence of different cement content and different confining pressure, and when cement content is more, and confining pressure is less, the shear dilatation is more obvious.