Vacuum preloading film pressing groove extension construction method

A construction method and technology of film-pressing ditch, which is applied in the direction of basic structure engineering, soil protection, construction, etc., can solve the problems of the existence of the film-pressing ditch soil layer and the inability to excavate, etc., so as to ensure the effect of pre-compression, easy to use, and ensure The effect of the sealing effect

Inactive Publication Date: 2015-06-24
NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
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  • Abstract
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Problems solved by technology

[0003] In order to solve the problem that there is an air-permeable layer in the soil layer of the film-pressing ditch during the construction process of vacuum preloading foundation treatment, and the problem that it cannot be excavated to the air-impermeable layer, the present invention provides a construction method for the extension of the vacuum pre-pressing film-pressing ditch

Method used

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Experimental program
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Embodiment Construction

[0008] The following will be described in detail in conjunction with the embodiments of the present invention.

[0009] The construction method of the vacuum pre-pressing film trench epitaxy includes two steps: the film trench epitaxy and the laying of the sealing film;

[0010] Filming groove extension: the original filming groove that cannot be dug to the air-tight layer is moved to the outside of the area, and the position of the filming groove is re-determined before excavation to ensure that the sealing film can be pressed into the filming groove after the filming groove is extended. soil layer;

[0011] Laying of the sealing film: After the epitaxy of the film groove, adjust the size of the sealing film according to the actual size of the extension, and lay the sealing film. After the sealing film is laid, it enters the vacuum pre-pressing construction stage.

[0012] Inspired by the above-mentioned ideal implementation cases according to the present invention, through ...

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PUM

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Abstract

The invention provides a vacuum preloading film pressing groove extension construction method which includes the steps of film pressing groove extension and sealing film laying. In the film pressing groove extension step, an original film pressing groove which can not be dug to an airtight layer is horizontally moved to the outer side of a region, and digging is performed after the position of the film pressing groove is determined again so as to guarantee that a sealing film can be pressed in a film pressing groove airtight soil layer after film pressing groove extension. In the sealing film laying step, after film pressing groove extension, the size of the sealing film is adjusted according to actual extension size, the sealing film is laid, and a vacuum preloading construction stage starts after sealing film laying. The vacuum preloading film pressing groove extension construction method is convenient to use, it can be ensured that digging can be performed to the airtight layer, the sealing effect is guaranteed, and the preloading effect of a whole vacuum preloading area is guaranteed.

Description

technical field [0001] The invention relates to the field of epitaxy construction methods of film-pressing trenches, in particular to a method for vacuum pre-pressing film-filming trench epitaxy construction. Background technique [0002] In the actual vacuum preloading construction, there are often air-permeable and water-permeable sand layers and blow-filled "shell" interlayers at the position of the boundary film ditch for soft soil foundation reinforcement, on the surface or at a certain depth of the reinforced soil layer. Taking special countermeasures, it is difficult to achieve and maintain the required vacuum. Under normal circumstances, after detailed geological drilling and geotechnical tests, the design and survey unit will require the special construction technology of clay curtain wall to ensure the sealing effect. However, in actual construction, there is often a lack of geological exploration data, and the problems of such air-permeable layers are mostly disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 董志凌李艳忠戴约林
Owner NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
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