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Secant pile water seepage treatment method

A processing method and technology for occlusal piles, which are applied in excavation, construction, infrastructure engineering, etc., can solve the problems of occlusal pile defects, water seepage, loose occlusion, etc., to ensure waterless operation, simple construction method, and solve the problem of occlusal pile water seepage. Effect

Inactive Publication Date: 2021-01-08
BEIJING RAIL TRANSIT CONSTR MANAGEMENT
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a method for treating water seepage of occlusal piles, which solves the problem of water seepage in existing vertical shafts due to defects in occlusal piles or lax occlusal joints

Method used

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  • Secant pile water seepage treatment method
  • Secant pile water seepage treatment method
  • Secant pile water seepage treatment method

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Embodiment

[0024]Such asFigure 1-4As shown, the embodiment of the present invention provides a method for treating water seepage in an occlusal pile, which includes the following steps:

[0025]S1. A number of grouting holes are opened on the occluding piles on the outer side of the shaft wall. The grouting holes pass through the foundation of the occluding piles to the outer end. The lateral spacing between two adjacent holes of the grouting holes is 500-600mm, Vertical distance 500mm, hole depth 2m, such asimage 3 Shown

[0026]S2. Insert a grouting pipe into the inner end of the opened grouting hole. The grouting pipe adopts Ф40 welded steel pipe, and the grouting pipe is arranged on the pile perpendicular to the shaft wall;

[0027]S3. Use a grouting machine to grouting on the outside of the shaft through a grouting pipe. The grouting material is cement-water glass double liquid grout. The grouting plane is around the shaft and is 2m from the outer contour of the occluding pile. The vertical range ...

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Abstract

The invention provides a secant pile water seepage treatment method, and relates to the technical field of underground construction engineering. The secant pile water seepage treatment method includesthe steps that S1, a plurality of grouting holes are formed in secant pile plain piles on the outer side of the wall of a vertical shaft, and the grouting holes penetrate through the secant pile plain piles to be communicated with a foundation at the outer end; S2, grouting pipes inserted into the inner ends of the formed grouting holes; S3, grouting is conducted on the outer side of the verticalshaft through the grouting pipes by using a grouting machine; and S4, decompressing and dewatering wells are dug on a foundation on the outer side of a vertical shaft awning, and the number of the dug decompressing and dewatering wells in each direction is determined according to the water gushing degree in the wells and site construction conditions. When the secant pile water seepage treatment method is used for construction, and special equipment is not needed, the construction method is simple, so that the water seepage problem of vertical shaft secant piles can be effectively solved, waterless operation of the vertical shaft is guaranteed, and meanwhile the reinforcing effect on an enclosure structure is achieved.

Description

Technical field[0001]The invention relates to the technical field of underground construction engineering, in particular to a method for treating water seepage in an occluding pile.Background technique[0002]Occlusive piles are often used as the enclosure and water-stop structure for shaft excavation. When there is a defect in the occluding pile or the lack of occlusion due to insufficient vertical precision of the occluding pile, the groundwater contained in the stratum will flow out into the well along the seepage channel on the pile body, affecting the construction operation of the shaft, so it is necessary to invent a treatment Method to deal with the water seepage problem of occlusal piles.Summary of the invention[0003](1) Technical problems solved[0004]In view of the shortcomings of the prior art, the present invention provides a method for treating water seepage of occluding piles, which solves the problem of water seepage of the pile body caused by the defects of occluding pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/08E02D19/16E02D15/04
CPCE02D15/04E02D17/08E02D19/16E02D2250/003E02D2300/0023
Inventor 李飞张金亮张飞焦国强
Owner BEIJING RAIL TRANSIT CONSTR MANAGEMENT
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