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一、冻结压力量测结果及其分析量测结果表明,冻结压力取决于土层的埋藏深度、土层的物理力学性质、冻结壁的扩展范围和温度分布.就每一观测水平来说,冻结施工期间的冻结压力变化又取决于井壁结构、施工工艺等因素.五个观测水平的共同点是,冻结压力均按三个阶段变化,即:急剧上升阶段、压力稳定阶段和压力降低阶段.所谓冻结压力急剧上升阶段,是说冻结压力变化速度相当大
First, the freezing pressure measurement results and analysis Measurement results show that the freezing pressure depends on the depth of soil burial, the physical and mechanical properties of the soil, the expansion of the frozen wall and temperature distribution for each observation level, the freeze The change of the freezing pressure during construction depends on factors such as the structure of the borehole wall, construction technology, etc. The common point of the five observation levels is that the freezing pressure changes according to three phases, that is, the sharp rise phase, the pressure stable phase and the pressure decrease phase. The so-called freeze-up phase of the rapid rise in pressure, that the pressure to freeze a considerable rate of change