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应用自主设计的大型侧限压缩仪研究粗巨粒混合土的颗粒相对破碎率与压力、孔隙比、含水量的变化关系,结果表明随压力增加、孔隙比减小相对破碎率接近直线增加,且随含水量增加直线斜率越来越大,增长幅度随含水量增加而加快;相对破碎率与压力、孔隙比的变化有很强的相关关系,且随压力增加,相对破碎率接近直线增加。随孔隙比增加,相对破碎率线性减小。随含水量增加直线斜率越来越大,因此增长幅度随含水量增加而加快,说明相对破碎率与应力、含水量成正比,与孔隙比成反比。
The large-scale confined compression tester designed by ourselves was used to study the relationship between relative crushing rate, pressure, void ratio and water content of coarse-grained mixed soil. The results show that with the increase of pressure, the relative reduction of porosity decreases and increases linearly With the increase of water content, the slope of the straight line is bigger and bigger, and the increase rate increases with the increase of water content. The relative fragmentation rate has a strong correlation with the changes of pressure and void ratio. With the increase of pressure, the relative fragmentation rate increases linearly. With the increase of void ratio, the relative fragmentation rate decreases linearly. As the water content increases, the slope of the line increases. Therefore, the rate of increase increases with the increase of water content, indicating that the relative crushing rate is proportional to the stress and water content and inversely proportional to the pore ratio.