A method for controlling freezing, freezing, heave and thawing of municipal engineering

Abstract

The invention discloses a method for controlling freezing, frost heave, thawing and sedimentation of municipal engineering, belonging to the field of municipal engineering. The invention discloses a method for controlling freezing, frost heave and thawing of municipal engineering. The freezing curtain inhibits the frost heave and thaw caused by the freezing method. Adding a certain amount of cement slurry and lime slurry into the soil is beneficial to improve the physical and mechanical properties of the soil. The effect of frost heave and thawing caused by internal reinforcement on surrounding buildings and strata, the advantages of this method do not require reinforcement of the entire design freezing area, and the local reinforcement of cement soil and lime soil is used to strengthen the strength of some soil bodies to form a ring The water-stop curtain is reinforced to enhance the impermeability and strength of some soil bodies, and effectively suppress the influence of frost heave and thawing. According to the strength of the freezing effect, the number of ring-shaped reinforcement water-stop curtains can be set by themselves, which reduces the construction time and construction costs.

Description

technical field [0001] The invention relates to the field of municipal engineering, and more particularly, to a method for controlling freezing, freezing, heave, and thawing of municipal engineering. Background technique [0002] At present, my country's municipal engineering is developing vigorously. The artificial freezing method uses artificial refrigeration technology to freeze the water in the natural soil, thereby enhancing the strength of the soil and isolating the impact of groundwater on the project. It can be used in municipal engineering in the near river and sea areas, such as water and electricity pipelines, subways, underground parking lots and other municipal projects. Due to the existence of a large range of water-rich and weak soil layers in the near river and sea areas, the end wells and foundation pits of municipal projects are used. , The use of artificial freezing method in the connection channel and tunnel to strengthen the soil will also cause the soil t...

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Problems solved by technology

[0002] At this stage, my country's municipal engineering is vigorously developing. The artificial freezing method uses artificial refrigeration technology to freeze the moisture in the natural soil, so as to enhance the strength of the soil and isolate the impact of groundwater on the project. In more and more It can be used in municipal engineering near the river and sea, such as water and electricity pipelines, subways, underground parking lots and other municipal projects. Due to the large-scale water-rich and weak soil layers in the near river and sea areas, it can be used in the end wells and foundation pits of municipal projects. The artificial freezing method used to strengthen the soil in , connecting passages and tunnels will also cause frost heaving and thawing of the soil, which will have a negative impact on the surrounding strata and structures. The common solution for projects with strict soil deformation requirements is The method of soil improvement in the entire design frozen area to suppress frost heave and thaw settlement, and the method of strengthening the entire design frozen area can certainly suppress the frost heave and thaw settlement caused by artificial freezing method reinforcement, but it increases the construction cost and construction time

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