Multi-level regional connection construction method of regional buried vertical tube horizontal connecting system

Abstract

The invention relates to regional buried vertical tube horizontal connecting construction, in particular to a regional buried vertical tube horizontal connecting system. The system comprises a plurality of vertical pipes, a set of water-distributing and collecting device (including a water-distributing device and a water-collecting device), a plurality of water-distributing branch pipes, a plurality of water-collecting branch pipes and horizontal dry pipes, wherein the water-distributing device and the water-collecting device extend out of a foundation pit through the horizontal dry pipes; the water-distributing device is respectively connected to the vertical pipes and the water-distributing branch pipes; the water-collecting device is respectively connected to the vertical pipes and the water-collecting branch pipes. A construction method of the regional buried vertical tube horizontal connecting system comprises the following steps of digging the foundation pit; digging a water-distributing device pit and a water-collecting device pit; flushing the vertical pipes; performing a bulge test; connecting the vertical tubes to the water-distributing device and the water-collecting device; after connecting the horizontal dry pipes to the water-distributing device and the water-collecting device, guiding the horizontal dry pipes to the periphery of the foundation pit. Due to the fact that the water-distributing device and the water-collecting device are connected to the buried vertical tubes in some region, a horizontal equal-stroke connection construction surface of the buried vertical tubes can be broken into parts; generally, when the foundation pit is dug, a construction operation surface of the small region is easily realized.

Description

technical field [0001] The invention relates to the construction of buried pipes in large foundation pits, in particular to the horizontal connection construction of regional buried vertical pipes. Background technique [0002] In the ground source heat pump buried pipe project under the building foundation, the horizontal connection of the vertical buried pipe needs to obtain the pipe trench work surface along the horizontal main pipe, that is, the horizontal main pipe needs to be excavated along the vertical pipe direction on the same straight line pipe trench, and then connect the vertical pipes to the horizontal main pipes. [0003] The traditional construction technology needs to wait until most of the excavation of the foundation pit is completed, and the vertical pipe can be buried before the horizontal connection construction can be carried out. However, the excavation sequence of the deep foundation pit generally advances from the periphery or both ends to the midd...

AI Technical Summary

Problems solved by technology

However, the excavation sequence of the deep foundation pit generally advances from the periphery or both ends to the middle. In addition, the interior of the deep foundation pit needs to be transported repeatedly during the excavation process, so that the large-area design elevation plane of the horizontal main pipe is basically impossible to obtain.

In addition, the vertical pipes are connected in parallel, the flow rate of the horizontal main pipes gradually increases, and the diameter needs to be gradually enlarged. Not only the accessories are complicated, but also the connection is difficult, and there is a risk of leakage at the connection

At the same time, such construction results in a long exposure time of the foundation pit, which poses a safety hazard.

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