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Deep foundation pit piping treatment method

A treatment method and technology for deep foundation pits, which are used in excavation, soil protection, infrastructure engineering, etc., can solve the problems of troublesome piping treatment, delayed construction period, difficult piping treatment, etc., so as to reduce the possibility of piping and excavation. easy effect

Inactive Publication Date: 2020-12-04
广东劲拓建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The foundation pit construction is an important part in building construction. The foundation pit is an earth pit excavated at the foundation design position according to the base elevation and foundation plane size. The foundation pit construction is mainly carried out in the early stage of construction, and in the subsequent construction In the link, the stability of the foundation pit affects the progress of the entire construction project. In the subsequent construction, if piping occurs in the foundation pit, it needs to be dealt with in time to prevent the piping from affecting the subsequent construction. Piping treatment is very troublesome and delays the construction period, so it is necessary to treat the foundation between or during foundation pit construction to prevent the occurrence of piping
[0003] In view of the above-mentioned related technologies, the inventor believes that there is a defect in construction that is difficult to deal with piping in foundation pits

Method used

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  • Deep foundation pit piping treatment method
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  • Deep foundation pit piping treatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0060] The embodiment of the present application discloses a method for treating plumbing in a deep foundation pit, which includes the following steps: S10, marking the foundation pit; S20, installing a protective component; S30, draining the foundation; S40, compacting; S50, excavating the foundation pit.

[0061] refer to figure 1 , S10, the specific way of marking the foundation pit is: draw a closed inner perimeter line along the wall position of the pre-excavated foundation pit, draw a closed outer perimeter line outside the inner perimeter line, and the outer perimeter line surrounds the inner perimeter line. The outline shape of the outer perimeter line coincides with the outline shape of the inner perimeter line and the center of the outer perimeter line coincides with the center of the inner perimeter line. The area within the inner perimeter line is the foundation pit area 11, the area outside the inner perimeter line and within the outer perimeter line is the treatm...

Embodiment 2

[0069] The difference from Embodiment 1 is that step S31 is performed while step S30 is performed, and the foundation is pumped. After S20 ends, S30 and S31 are performed simultaneously, and S40 is performed after the end of S31 at the same time. refer to Figure 6 and Figure 7 , S31, the specific method of ground pumping is: install a pumping assembly 5 in the outer area 13, use the pumping assembly 5 to pump water to the outer area 13, and then remove the pumping assembly 5. The pumping assembly 5 includes a pumping pipe 51 and a vacuum pump 52. The bottom of the pumping pipe 51 is closed, and the bottom of the pumping pipe 51 is fixedly provided with a second sinking portion. The second sinking portion is in an inverted conical shape so that the pumping pipe 51 sinks into the foundation. It has a higher sinking efficiency. A plurality of water-absorbing holes 511 are provided on the side of the suction pipe 51 . S31, the specific implementation of foundation pumping in...

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Abstract

The invention relates to a deep foundation pit piping treatment method. The deep foundation pit piping treatment method comprises the following steps that S10, foundation pit scribing is conducted, specifically, a closed inner peripheral line is drawn at the position of a pre-excavated foundation pit, a peripheral line surrounding the inner peripheral line is drawn outside the inner peripheral line, and the inner peripheral line and the peripheral line divide a foundation into a foundation pit area, a treatment area surrounding the outer side of the foundation pit area and an outer area surrounding the outer side of the treatment area; S20, a protection assembly is mounted, specifically, an inner peripheral assembly isolating the foundation pit area from the treatment area is mounted at the inner peripheral line, and a peripheral assembly isolating the treatment area from the outer area is mounted at the peripheral line; S30, foundation drainage is conducted, specifically, a drainage assembly is mounted in the treatment area, the drainage assembly is used for draining the foundation in the treatment area so as to drain water in the foundation in the treatment area into the foundation in the foundation pit area and the foundation in the outer area, and then the drainage assembly is removed; S40, compaction is conducted, specifically, the foundation in the treatment area is compacted; and S50, the foundation pit is excavated, specifically, soil in the foundation pit area is excavated away to form the foundation pit. The deep foundation pit piping treatment method has the effect of reducing the possibility of piping of the foundation pit in building construction.

Description

technical field [0001] The application relates to the technical field of piping prevention and control, in particular to a method for treating piping in deep foundation pits. Background technique [0002] Piping is under the action of seepage. The fine particles of the soil form pores along the skeleton particles, and the increase of the flow rate of water in the pores of the soil causes the fine particles of the soil to be washed away. The smaller diameter of the gushing water is a few centimeters. The larger one is several meters, and an uplifted sand ring is often formed around the pores. In the foundation with high moisture content, especially for non-cohesive soil with intermediate particle size, piping is more likely to occur. The foundation pit construction is an important part in building construction. The foundation pit is an earth pit excavated at the foundation design position according to the base elevation and foundation plane size. The foundation pit construc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10E02D17/04E02D19/06E02D5/18
CPCE02D3/10E02D5/187E02D17/04E02D19/06
Inventor 麦小君
Owner 广东劲拓建设工程有限公司