Air flow filling and sucking type foundation draining method

Abstract

The invention provides air current suction type groundsill drainage, in particular a drainage in which an air current channel is formed inside a displacement hull by supplementing and pumping air so as to smoothly discharge the water content in the groundsill and to consolidate the groundsill. The prior art has the shortcomings of difficult drainage and bad effect. The invention has the following steps: 1. the displacement hull with a drainage channel is provided with at least one vertical hollow tubes inside; 2. the displacement hull with vertical hollow tubes is inserted into the groundsill; 3. the groundsill is pressed; 4. the air is led into the displacement hull from the hollow tubes and the air is pumped from the upper end of he drainage channel of the displacement hull, and the groundsill water is drained earthward along the displacement hull. The air can flow in the drainage system by forming the air current channel, thereby fulfilling the purposes of improving the drainage effect, being convenient to use by less labor, having good drainage effect and effectively guaranteeing the groundsill treatment quality.

Description

【Technical field】 [0001] The present invention relates to a treatment method for water-containing soft soil foundation, in particular to a drainage method that forms an airflow channel in the drainage body by supplementing the air and sucking the air, so as to smoothly discharge the water contained in the foundation and promote the consolidation of the foundation . 【Background technique】 [0002] The existing water-containing soft soil foundation drainage generally adopts the vacuum water absorption method, including the following steps: [0003] (1) Embedding at least one vertical vacuum drainage pipe in the drainage body (drainage board); [0004] (2) Insert the drainage body vertically into the foundation; [0005] (3) Suction air at the upper end of the vacuum tube of the drainage body, so that the water in the foundation is discharged along the drainage channel with the sucked air. [0006] With this drainage method, since the air is only drawn from the drainage body...

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Problems solved by technology

[0006] With this drainage method, since the air is only drawn from the drainage body in one direction, the air cannot be replenished, so that the air pressure in the drainage body and the foundation is getting smaller and smaller, and the pressure difference with the outside world is getting bigger and bigger. With increasing suction force, after a period of suction, the air pressure in the drainage body is very small, and the suction is close to a stagnant state, making drainage very difficult

Therefore, even if the vacuum water absorption method is used for long-term drainage, it is often only possible to extract water close to the surface, and it is difficult to remove the accumulated water deep in the foundation, resulting in some water remaining in the drainage body and the foundation, which is easy to cause The drainage effect cannot reach the expected effect, which affects the quality of the foundation

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