Foundation pit water burst emergency processing construction method based on silt riprap stratum

Abstract

The invention discloses a foundation pit water burstemergency processing construction method based on a silt riprap stratum. The foundation pit water burst emergency processing construction method comprises the following steps that S1, power is turned off, and Personnel withdraw; S2, water burst is back pressured; S3, water burst is guided; S4, a water burst point is reinforced; S5, a hole is drilled and guniting is conducted; and S6, water burst site monitoring is conducted. A foundation pit water burst emergency can be processed in time, and foundation pit collapsing is avoided. Redundant staffing can be reduced, and therefore post allocation can be more reasonable. Material delivery is more reasonable. The cost is saved. The method is conducive to filling the blank of the water burst emergency rescue technology, can improve the emergency rescue technology of water burst and other accidents occurring in the process of foundation pit excavation, and therefore the most effective rescuecan be organized when emergency occurs during the foundation pit construction process.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for emergency treatment of water inrush in foundation pits based on mud riprap strata. Background technique [0002] Subway construction is in a period of rapid development, and in the process of deep foundation pit engineering construction, it is inevitable that there will be different degrees of disturbance to the surrounding soil. An important impact is the unevenness and subsidence of the surrounding surface, which will affect the surrounding buildings. , The normal use of structures and underground pipelines has caused serious engineering accidents. . [0003] Excavation of foundation pits in silt riprap strata in reclamation areas mainly includes risks from geological and construction aspects. Geological risk mainly refers to the silt geological riprap strata in the reclamation area, which includes plain fill, silty soil and other compo...

AI Technical Summary

Problems solved by technology

Silt soil has the characteristics of large void ratio, high compressibility, low shear strength, thixotropy, rheology and inhomogeneity, and is an unstable soil, which is easy to cause lateral sliding, ground subsidence, foundation pit instability, etc. risk

[0004] The foundation pit is located in the silt riprap stratum of the reclamation area, and the engineering conditions are very special. In view of the complex geological conditions of the reclamation area, the analysis of the catastrophic accidents prone to occur in the construction process of the foundation pit is focused. In various catastrophic accidents of the foundation pit, the Pit water inrush accidents account for a large proportion, and once a foundation pit water inrush accident occurs, if the effective control is not carried out in time, the subsequent accidents caused by it will be immeasurable. Buildings subside or even collapse, causing huge casualties and economic property losses, and the consequences are very serious

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