Method for controlling freezing, frost heaving and thaw collapse of municipal engineering

Abstract

The invention discloses a method for controlling freezing, frost heaving and thaw collapse of municipal engineering, and belongs to the field of municipal engineering. According to the method for controlling freezing, frost heaving and thaw collapse of municipal engineering, cement soil and lime soil are conveyed to corresponding positions through grouting holes to form a freezing curtain to inhibit frost heaving and thaw collapse caused by a freezing method, and a certain amount of cement slurry and lime slurry are doped into a soil body, so that the physical and mechanical properties of the soil body can be improved, and the influence of frost heaving and thaw collapse caused when an artificial freezing method is used for reinforcing municipal engineering ends, connection channels and tunnels on surrounding buildings and stratums can be inhibited. The construction method has the advantages that the whole designed frozen zone does not need to be reinforced, the strength of a part of soil body is enhanced by adopting a cement soil and lime soil local reinforcement mode to form annular reinforced waterproof curtains, the impermeability and strength of the part of soil body are enhanced, the influence caused by frost heaving and thaw collapse is effectively inhibited, the number of the annular reinforced waterproof curtains can be automatically set according to the strength of the freezing effect, the construction time is shortened, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the field of municipal engineering, in particular to a control method for freezing, heaving, and thawing of municipal engineering. Background technique [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 ...

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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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