本文试验使用一台多功能液压三轴仪。该仪器可严格控制中空园柱试件的边界受力条件及在垂直方向对试件施加拉力或压力。通过这种仪器进行了在渗水力作用下压实粘性土的水力劈裂性能研究。研究结果表明,在不同起始主应力比条件下,试件可以表现为水力劈裂破坏,也可以为剪切塑流破坏。试验结果与本文提供的理论计算值相符。 This article uses a multi-functional hydraulic triaxial test. The instrument can strictly control the boundary stress conditions of hollow cylindrical specimens and apply tension or pressure to the specimen in the vertical direction. The hydraulic fracturing performance of cohesive soil compaction under water seepage was studied by this instrument. The results of the study show that under different initial principal stress ratios, the specimen can be represented by hydraulic fracturing failure, and can also be destroyed by shear plastic flow. The test results are in accordance with the theoretical calculations provided herein.