深厚膨胀粘土中冻结凿井的温度场测试与分布规律研究

介绍了冻结深度达460多米（其中多数为膨胀粘土层）的立井井筒施工监测方案，通过分析不同埋深的冻土井壁和混凝土衬砌的温度场测试数据，得到了黏土结冰温度与含水率和埋藏深度的函数关系、不同深度冻结壁形成和降温规律、混凝土衬砌井壁结构温度场的阶段性发展规律等研究结果。有效地指导了本测试井筒的施工，为同类井筒的施工和设计提供了新的科学依据。

Research on temperature field monitoring and distribution rule of frozen sinking in deep expansive cohesive soil

The monitoring method of the vertical shaft with frozen depth of 460 meters (Most of frozen soil is expansive cohesive soil)is described. By analyzing statistics of different buried length of the frozen wall of the well and concrete block lining of temperature field, three main important rules are drawn as follows: 1. the function relationship between freezing temperature of clay, water content and different buried depth; 2. the rule between the form of different depths of frozen wall and measure of lowering temperature; 3. the development rule in different steps of concrete block lining of temperature field and some other research results. The three rules instruct the construction and monitoring of the shaft effectively so as to support new scientific gist for designing and constructing the identical well.