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对Ｔｏｒｖａｎｃ剪切仪的工作机理作了系统的理论分析，并推导出有关参数的计算公式．指明了该仪器不足之处，研制出改进型的模型仪器．对Ｔｏｒｖａｎｃ剪切仪测定值的稳定性及其影响因素做了多方面的试验工作．利用测试成果，统计得出Ｔｏｒｖａｎｃ剪切强度值与三轴、直剪、无侧限压缩及袖珍贯入仪等试验所得相应不排水剪切强度值间的相关关系式，还探讨了用Ｔｏｒｖａｎｃ剪切仪确定液、塑限的可能性．提出了尚需研究的课题．
A theoretical analysis of the working mechanism of the Torvanc shearing instrument was made, and the calculation formula of the relevant parameters was deduced. Indicate the deficiencies of the instrument and develop an improved model instrument. A variety of tests were performed on the stability of the measured value of the Torvanc shear meter and its influencing factors. Using the test results, statistical correlations between Torvanc shear strength values and the corresponding undrained shear strength values obtained from triaxial, direct shear, unconfined compression, and pocket penetration instrumentation were also obtained, and the use of Torvanc shears was also discussed. Cutting instrument to determine the possibility of liquid, plastic limit. Presented topics that need to be studied.