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通过改变探头，即把原来的锥形探头变为平底探头，使探头的应力形式有较大的改变，从而更接近地基基础的工作环境，更直观的模拟地基基础应力变化。这不仅为原位测试提供了一种新的方法，同时由于采用了平底探头，经过进一步改进，可近似地进行载荷试验，或对土样进行室内的力学模拟试验。通过这种一系列的试验，可逐渐找出原位测试与室内力学试验的一些相关的因素，建立相关的关系。这对于研究土的物理力学性质有重要的现实意义。
By changing the probe, the original cone probe into a flat-bottom probe, the probe has a greater change in the form of stress, and thus closer to the foundation of the working environment, more intuitive simulation of foundation stress changes. This not only provides a new method for in-situ testing, but also through the use of a flat-bottom probe, further improvements can be made to load tests or to simulate indoor soil mechanics simulations. Through such a series of experiments, we can gradually find out some relevant factors of in-situ test and in-house mechanics test and establish the related relationship. This is of great practical significance for studying the physical and mechanical properties of soil.