Quick press-in type tubular pile well and application thereof

Abstract

The invention relates to a quick press-in type tubular pile well and application thereof. The quick press-in type tubular pile well comprises a quick press-in type tubular pile well body and a high-pressure water disturbance mechanism. The quick press-in type tubular pile well body is a high-strength prefabricated part and comprises a well pipe layer, a packing layer and an outer reinforcing layer, and the quick press-in type tubular pile well body can be pressed into a soil body through a hydraulic pile press. The high-pressure water disturbance mechanism can generate high-pressure water flow and oscillation water flow and is used for flushing away net plugs and sealing wax on the surfaces of water permeable holes and cleaning mud cakes on the inner surface of a well pipe and sediment at the bottoms of the holes, meanwhile, the pore structure of mucky soil can be changed under the impact effect of the water flow, and the permeability of the mucky soil is improved. The quick press-in type tubular pile well is used for tubular well dewatering engineering in the field of foundation pit dewatering engineering, is a complex stratum with sudden changes, gradual changes and the like, and can replace a traditional tubular well to be used in the foundation pit dewatering engineering, the permeability of the mucky soil is improved, the tubular well forming efficiency and the tubular well dewatering efficiency are improved, the dewatering construction period can be shortened, and the engineering cost is saved.

Description

technical field [0001] The invention relates to the technical field of dewatering engineering, in particular to a quick press-in type pipe pile well and its application. Background technique [0002] With the progress and development of society, people gradually began to pay attention to the development and utilization of urban underground space. In major projects in the fields of civil buildings, industrial buildings, subway transportation, etc., due to the requirements of superstructure loads or underground building space planning, the excavation depth of foundation pits is getting larger and higher, and the requirements for precipitation are also getting higher and higher. [0003] When excavating a deep foundation pit in an area with a high groundwater level, since the aquifer is cut off, under the action of pressure difference, groundwater will inevitably infiltrate into the foundation pit continuously. If the drainage of the foundation pit is not carried out, the found...

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Problems solved by technology

[0004] In this type of project, it is necessary to investigate the burial conditions of groundwater at a certain depth below the ground. Complex formations formed by interlacing aquifers and aquifers are very common, and it is often difficult to carry out engineering precipitation. When encountering aquifers with low permeability silt When the soil is poor, the effect of using ordinary tube wells for dewatering is greatly reduced. It often faces problems such as long precipitation time, low efficiency, complicated well tube design, and difficult control of filler quality.

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