Deep-layer embedded-pipe prefabricated energy pipe pile and construction process thereof

Abstract

The invention belongs to the technical fields of building pile foundations and energy development, and relates to a deep-layer embedded-pipe prefabricated energy pipe pile capable of increasing the utilization rate of shallow-layer geothermal clean energy, and a construction process thereof. The deep-layer embedded-pipe prefabricated energy pipe pile comprises a prefabricated energy pipe pile, a deep-layer drilling heat exchange well, a heat exchange pipe and a backfill material, wherein the prefabricated energy pipe pile and the deep-layer drilling heat exchange well are coaxially arranged from top to bottom; vertical drill holes are formed in the prefabricated energy pipe pile and the deep-layer drilling heat exchange well in the axial direction of the prefabricated energy pipe pile; theheat exchange pipe is U-shaped as a whole; the heat exchange pipe stretches to the bottom of the deep-layer drilling heat exchange well from the top of the prefabricated energy pipe pile; and the backfill material is filled between the heat exchange pipe and the vertical drill holes. The deep-layer embedded-pipe prefabricated energy pipe pile disclosed by the invention is reasonable in structure,simple in construction process, capable of saving the drilling expense and free from influence on prefabricated pile construction, and is an efficient and environment-friendly novel energy prefabricated pile form.

Description

technical field [0001] The invention belongs to the technical field of building pile foundations and energy development, and relates to an energy pipe pile and a construction process, in particular to a deep-buried prefabricated energy pipe pile and a construction process that can improve the utilization rate of shallow geothermal clean energy. Background technique [0002] Since the 21st century, China has become the world's largest energy consumer. my country's energy structure mainly relies on coal and other fossil fuels. The smoke and dust emitted by coal combustion, CO 2 The environmental pollution problems caused by it have attracted worldwide attention. The ground source heat pump system has become a major form of clean energy due to its advantages of saving energy and reducing pollutant emissions. The application of ground source heat pump is the core of underground space energy application engineering, and it has special advantages compared with other air conditioni...

AI Technical Summary

Problems solved by technology

Usually, the length of the pile foundation is 20-30m, and the drilling depth of the ground source heat pump is 100m, so it is difficult to obtain sufficient heat transfer within the limited pile length. few

And at present, the energy piles are mainly cast-in-place piles, relying on manually binding the heat exchange tubes to the steel cage for fixing, which has a great impact on the mechanized pile foundation construction and makes it difficult to operate continuously

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