Underground engineering piping treatment device and treatment method

Abstract

The invention discloses an underground engineering piping treatment device, and belongs to the field of underground engineering piping treatment. The underground engineering piping treatment device comprises a main body installed at the piping position, a tubular structure body is installed on the main body, a reverse filtration material is arranged inside the tubular structure body, an extrusion mechanism for directionally applying pressure to the interior of the piping through the reverse filtration material is arranged on the tubular structure body, and a filtering mechanism is arranged in the middle of the tubular structure body. When the underground engineering piping treatment device is used, the tubular structure body is installed on the outer side of the piping, loose soil at the piping position is cleaned, then the reverse filtration material is effectively extruded into the piping through the extrusion mechanism, and whether blocking is completed or not is judged according to whether sewage is discharged through a filtering pipe of the filtering mechanism or not. The operation mode is simple and easy to implement, the blocking efficiency and the success rate are high, and large-range implementation and popularization are facilitated.

Description

Technical field [0001] In particular, in the art of underground engineering tube treatment techniques, in particular, therefore, Background technique [0002] During the base pit excavation, the bottom of the base pit is not paved and rolled, so that the bottom plate itself does not have a good level or vertical anti-seepage structure, plus the pit, the ground in the pit, the production of seepage pressure transfer will be along the pit Thin powdered clay or powder, the level flows out of the sand. [0003] The production of tubes is related to the thickness of the ground soil, and the thickness is uneven. In contrast contact, especially in the vertical rising infiltration, there is a large difference in different formations, flow rate, and permeability, it is possible to put the fineness on the contact surface. The particle sand is taken away, and the contact surface is flushed or fluffed. [0004] When there is pressure water in the foundation pit, the foundation pit excavation...

AI Technical Summary

Problems solved by technology

[0004] When there is confined water under the foundation pit and the excavation of the foundation pit reduces the thickness of the impermeable layer above the aquifer, to a certain extent, the confined water The pressure of the water head can crack or break through the bottom plate of the foundation pit, causing sudden surge, piping, seepage around, and finally destroying the strength of the foundation, causing great difficulties to the construction

Piping and foundation pit surges will cause basement top cracks, reticular or dendritic pores will appear, and groundwater will gushes out with soil and sand particles. In severe cases, it will cause foundation pit slope instability, surrounding buildings and support A large amount of settlement and displacement of the structure resulted in local "boiling" pipe gushing, water and sand emission at the base, causing water to accumulate in the foundation pit, and disturbance of the foundation soil, which caused great difficulty in construction and hidden dangers of building safety

[0005]The current sealing measures are to pile up cofferdams outside the piping, clear loose soil at the piping area, and then fill the interior with materials such as grain, chaff, and gravel. Plugging, the operation steps are complicated and cumbersome, and it is easy to cause large-area settlement

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