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

An emergency treatment and construction method technology, applied in the direction of infrastructure engineering, construction, etc., can solve the problems of surrounding building settlement, unstable soil, low shear strength, etc., to reduce unnecessary loss of materials and avoid foundation pits Collapse and ensure the effect of safe development

Inactive Publication Date: 2018-12-28
CHINA POWER CONSTR SOUTHERN CONSTR INVESTMENT CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0044] The present invention is further described below in conjunction with accompanying drawing and embodiment:

[0045] Such as Figure 1-4 As shown, a construction method for emergency treatment of water inrush in foundation pits based on silt riprap strata includes the following steps:

[0046] Step 1: Turn off the power, evacuate personnel, turn off the power of all equipment in the foundation pit, and evacuate all personnel and equipment;

[0047] Step 2: Water inrush back pressure, set up a back pressure platform 3 around the water inrush point 2; stack sandbags within a radius of 8.5m at the water inrush point to form a back pressure platform 3, and the back pressure platform 3 is sloped on three sides at a ratio of 1:1. The top of the anti-pressure platform 3 is set with the pile body at the water inrush point as the center, and extends 3.5m to the outside of the foundation pit surrounding protection pile 4;

[0048] Step 3: Water inrush and drainage. When the water...

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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...

Claims

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Application Information

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IPC IPC(8): E02D19/06E02D19/12
CPCE02D19/06E02D19/12
Inventor 孙成山伍华翔周建伟马高伟朱旭红江永平靳方罗杨林林王浩陈晓华
Owner CHINA POWER CONSTR SOUTHERN CONSTR INVESTMENT CO LTD
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