House shallow vertical punching sand pumping deskewing device and method

Abstract

The invention discloses a house shallow vertical punching sand pumping deskewing device and method. The house shallow vertical punching sand pumping deskewing device comprises a water supply system, an air compressor and steel sleeves, wherein the water supply system comprises a water tank, a water pump, a main water supply pipe, a high-pressure pipe and water flushing pipes; the water pump is arranged in the water tank; one end of the high-pressure pipe is connected with the water pump; the other end of the high-pressure pipe is connected with the main water supply pipe; a plurality of waterflushing pipes are connected onto the main water supply pipe; the other end of each water flushing pipe is inserted into the steel sleeve; each steel sleeve is arranged in a soil taking hole in an inserted and connected way; and a flow dividing pipe is arranged on each water flushing pipe, and is connected with the air compressor. High pressure water and high pressure air are used for performing water flushing and air inflation onto a substrate; substrate sand is pumped out; soil grooves are gradually formed one by one; the stress state of foundation soil is changed through strong compaction and lateral extrusion of residual contact soil; the foundation is promoted to continuously and slowly generate forced settlement; the structure and the method are simple; the implementation is easy; the cost is low; and the environmental pollution is small.

Description

technical field

[0001] The invention belongs to the technical field of unevenness and inclination rectification of building foundations, and in particular relates to a rectification device and method for vertically punching and pumping sand in a shallow layer of a house. Background technique

[0002] The construction of low-rise buildings in the coastal dredging reclamation area usually uses the shallow dredging sand layer as the basic bearing layer, and plastic drainage boards and super surcharge preloading are usually used for foundation treatment before construction. However, sometimes due to the lack of foundation treatment, a large uneven settlement will occur under the action of the upper load, which will cause the overall or partial inclination of the house. For the above-mentioned house straightening, the horizontal drilling method is generally used to correct the deviation, but this method has some limitations. First, the work surface involves a large amount of fou...

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