Mine shaft temperature-displacement field coupling physical simulation experiment device and method based on freezing method construction

Abstract

The invention discloses a mine shaft temperature-displacement field coupling physical simulation experiment device and method based on freezing method construction, including a model frame, a simulation shaft, a liquid carbon dioxide steel cylinder, a liquid inlet pipe, a stainless steel freezing pipe, a pipeline temperature sensor, an optical fiber Temperature sensor; rock soil samples are fixedly arranged in layers inside the model frame; a simulated wellbore is inserted in the middle of the rock soil samples; a liquid return pipe is fixedly installed on the upper part of the stainless steel freezing pipe. The present invention has a rigorous, scientific layout and a high degree of intelligence. Instead of the operation method of separately constructing monitoring holes and laying out temperature sensors, the temperature monitoring system composed of pipeline temperature sensors and optical fiber temperature sensors realizes the monitoring of rock and soil layers, shaft walls and The multi-point temperature sampling of the pipeline, with the help of strain gauge sensing, realizes the statistics of the three-dimensional deformation of the rock and soil layer and the shaft wall, and realizes the coupling physical simulation of the temperature-displacement field of the mine shaft based on the freezing method construction, providing a basis for optimizing the construction. Parameters for reference.

Description

technical field [0001] The invention relates to a temperature-displacement field simulation experiment device and method, in particular to a mine shaft temperature-displacement field coupling physical simulation experiment device and method based on freezing method construction. Background technique [0002] The freezing method construction is to use artificial refrigeration technology to take away the heat in the formation through the buried freezing pipe, so that the water in the formation freezes into frozen soil, forming a frozen soil curtain with high strength and stability, and isolating groundwater. , and then carry out the construction method of underground engineering operations under the protection of the frozen soil curtain. [0003] At present, the freezing method has been widely used in underground engineering such as coal mine shaft excavation and shaft repair. During the freezing drilling construction process, there is a whole process of formation, developmen...

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Problems solved by technology

[0004] The current freezing method construction generally adopts the on-site measurement method to monitor the temperature-displacement coupling field around the freezing hole. During the monitoring process, it is necessary to construct a monitoring hole separately and arrange temperature and displacement sensors, which is time-consuming, laborious, and requires a large amount of engineering and high monitoring costs. The most critical The disadvantage is that it is impossible to form the associated data of the temperature-displacement coupling field around the freezing hole. In view of this, it is necessary to develop a physical simulation experiment device for the mine shaft temperature-displacement coupling field based on the freezing method.

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