System and method for blocking the influence of foundation pit excavation

Abstract

The invention discloses a system and a method for blocking the influence of foundation pit excavation. Before foundation pit excavation, a steel plate is vertically pressed in the middle of a foundation pit and a building; four circular holes are drilled in the steel plate; two sides of the circular holes are covered by elastic films; a grouting pipe is embedded in the steel plate; the grouting pipe is connected with the four circular holes, and simultaneously connected with a valve at the top of the steel plate; the valve is connected with a water pipe; the water pipe is connected with one side of a pump; the other side of the pump is connected with the water pipe; a mud pit is excavated around the steel plate; the water pipe extends into the mud pit; an optical fiber test component is buried on one side of the steel plate close to the building; the optical fiber test component is connected with a conducting wire; the conducting wire is connected with a controller; and the controlleris connected with the pump. The controller can control the operation of the pump according to the pressure value measured by the optical fiber test component.

Description

technical field [0001] The patent of the present invention relates to a system and method for blocking the influence of foundation pit excavation, especially to block the adverse effects of subway foundation pit excavation on surrounding buildings and other facilities. Background technique [0002] With the rapid development of the economy, urban construction, especially the construction of subway projects, has developed rapidly. Due to the complex urban environment, dense ground and underground buildings and other factors, there are more and more cases where the subway is close to the construction of buildings. At the same time, Due to the various environmental problems arising from engineering construction have also received widespread attention from all walks of life. Most foundation pits are surrounded by housing construction projects, municipal pipelines and subway tunnel projects. When excavating foundation pits, the surrounding soil will be deformed. problems, serious...

AI Technical Summary

Problems solved by technology

After the excavation of a foundation pit for the Xi’an Metro, the teaching building in a certain college was cracked in a large area and lost its function

If the horizontal displacement of the soil caused by the excavation of the foundation pit cannot be blocked, it will have adverse effects on the surrounding buildings and other facilities, and the construction party may have to bear huge economic compensation

At the same time, the existing compaction grouting technology has hysteresis and has relatively large defects

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