Water seepage source diagnosis and flow guide device for foundation pit without waterproof curtain

Abstract

The invention belongs to the technical field of foundation pit construction, and particularly relates to a water seepage source diagnosis and flow guide device for a foundation pit without a waterproof curtain. The device comprises a flow guide mechanism and a detection mechanism, wherein the flow guide mechanism comprises a flow guide pipe; a pipe body of the flow guide pipe is divided into a negative pressure section and a seepage section from top to bottom; a plurality of seepage holes are formed in the pipe wall of the seepage section; the pipe body of the seepage section of the flow guide pipe is filled with a filter material; the detection mechanism comprises a plurality of sensors buried in the filter material; the sensors are arranged in the filter material from top to bottom; the output ends of the sensors are in signal connection with the input end of an external signal acquisition instrument through wires; and the output end of the signal acquisition instrument is in wireless signal connection with the input end of a cloud platform server. The water seepage source diagnosis and flow guide device can effectively detect the position of a water seepage source of the foundation pit without the waterproof curtain, and improves the safety performance of the foundation pit.

Description

technical field [0001] The invention belongs to the technical field of foundation pit construction, and in particular relates to a seepage source diagnosis and flow diversion device for foundation pits without water-stop curtains. Background technique [0002] For foundation pits without water-stop curtains supported by grading, soil nails, anchor cables, etc., water seepage is often encountered. The water source may be sewage, water supply, river water, etc., causing the cohesion and friction angle of the soil to drop sharply. Cause lateral movement of the foundation pit and surface settlement, and even cause the foundation pit to collapse. In recent years, the collapse accidents of foundation pits are all related to the seepage of pit walls. When the deformation of the foundation pit exceeds the critical value, the foundation pit backfilling and grouting are usually used for emergency treatment. On the one hand, the construction period is delayed and the project cost is i...

AI Technical Summary

Problems solved by technology

When the deformation of the foundation pit exceeds the critical value, the foundation pit backfilling and grouting are usually used for emergency treatment. On the one hand, the construction period is delayed and the project cost is increased. On the other hand, it causes cracks around the foundation pit, posing potential safety hazards

But objectively, as long as the source of water seepage is not found, the mechanical properties of the soil caused by water seepage will decrease, the additional load will increase, and the potential danger of the foundation pit will not be completely eradicated.

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