Method for embedding ground heat exchanger of ground source heat pump by high-pressure jet grouting

Abstract

The invention relates to a new method for embedding a ground heat exchanger of a ground source heat pump, which is developed by a high-pressure jet grouting technology and can solve the following problems caused by current methods: the bearing capacity of a foundation of a underground pipe land is reduced; after the foundation bears a load, the foundation deforms and is easy to damage pipes, thus a space below a building cannot be sufficiently utilized; and hydraulic connections appear among water-bearing stratums. In the invention, curing agent slurries such as cement, and the like are used for jet grouting under high pressure or compulsively stirring by cooperating with the jet grouting to form solidifiable slurry to replace original soil for forming holes, and a special guider is used for inserting underground pipes into the holes or the underground pipes are simultaneously introduced at the same time of forming the holes. The method has the obvious effects of reinforcing the foundation and sufficiently utilizing the space below the building; the spatial arrangement is flexible, thus constructions can be carried out at arbitrary tilt angles; the strength of a formed reinforcing body is high, thus the underground pipes can be protected to prevent circulating liquid in the underground pipes from leaking; the reinforcing body has high bonding strength and good water isolating property with the soil stratums without breaking the water isolating property of a water isolating layer; and returned slurry in a construction process can solidify so as to be beneficial to environmental protection. The method can realize the embedding of the underground pipes below the existing buildings.

Description

1 technical field [0001] The invention relates to a method for embedding a ground-buried pipe heat exchange system of a ground-source heat pump and the technical field of high-pressure rotary spraying. 2 background technology [0002] Ground source heat pump buried pipe heat exchange system has been widely used due to its unique technical advantages. The buried pipes are divided into horizontal and vertical types, and the vertical buried pipe heat exchange system is widely used. The currently widely used sinking-type vertical buried pipe burial method has a simple construction process, but it is not easy to control the compactness of the backfill, resulting in a decrease in the bearing capacity of the foundation and deformation and damage to the pipe body when the upper part of the foundation is subjected to load, which in turn cannot make full use of buildings and structures. A hydraulic connection occurs between the underlying land space and the aquifer traversed by the ve...

AI Technical Summary

Problems solved by technology

The currently widely used sinking-type vertical buried pipe burial method has a simple construction process, but it is not easy to control the compactness of the backfill, resulting in a decrease in the bearing capacity of the foundation and deformation and damage to the pipe body when the upper part of the foundation is subjected to load, which in turn cannot make full use of buildings and structures. Hydraulic connection between the underlying land space and the aquifer traversed by the vertical buried pipe

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