Foundation pit slope soil-nailing dewatering support construction method

A construction method and foundation pit edge technology, which can be applied in basic structure engineering, excavation, construction, etc., can solve problems such as difficulty in pumping water, difficulty in forming holes, and difficulty in forming trenches, so as to improve construction quality, improve stability and shorten construction period Effect

Active Publication Date: 2013-12-18
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in soft soil areas, there is a lot of rain, and the mud and water in the foundation trench are mixed, so normal construction cannot be done; soil nailing construction makes it difficult to form holes
Earthwork excavation generally adopts side slope well point dewatering, excavation of foundation trench with open row of water pits, the site is muddy, it is difficult to form ditches, it is difficult to pump water, and silt and sand accumulate; adopt precipitation measures, wait for the rain to stop, and delay earthwork excavation , slope support construction period, construction quality and slope safety are difficult to guarantee

Method used

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  • Foundation pit slope soil-nailing dewatering support construction method
  • Foundation pit slope soil-nailing dewatering support construction method
  • Foundation pit slope soil-nailing dewatering support construction method

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Embodiment Construction

[0040] Such as figure 1 Shown, foundation pit side slope soil nailing dewatering support construction method of the present invention, it adopts following steps to be:

[0041] S1, make hollow cannula, combine figure 2 and Figure 2A As shown, the manufactured hollow cannula 100 has an injection hole 110 at the tube head, and side injection holes 120 with valves 130 are distributed on the side wall.

[0042] The hollow cannula can be steel pipe, hard plastic pipe or soft plastic pipe. combine figure 2 and Figure 2A As shown, the hollow cannula 100 can be a one-piece structure or a split structure. For the one-piece mechanism, the fabrication is relatively simple, only need to flatten the front end of the hollow cannula 100 and leave the injection hole. For the split structure, a tip 101 with an injection hole is connected to the front end of the hollow cannula 100 . The end of the hollow cannula is a single-taper hole structure or a flat-mouth single-hole structure (...

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Abstract

The invention discloses a foundation pit slope soil-nailing dewatering support construction method. The construction method includes firstly, inserting a hollow insertion pipe into a soil body in a mode that the hollow insertion pipe with the end and the side wall both provided with jet holes is injected with water to jet the soil body, secondly, connecting a water pump with the hollow insertion pipe to pump water in the soil body and a foundation pit, thirdly, injecting cement paste into the hollow insertion pipe to form an anti-pulling anchor pile, and finally, connecting the anti-pulling anchor pile and a steel wire mesh into a whole prior to whitewashing and plastering to form a slope support. The construction method has the advantage of suitability for construction in rainy soft soil areas, and is shorter in construction period, low in energy and consumption, green, environmentally friendly and higher in construction cost as compared with the prior art.

Description

technical field [0001] The invention belongs to the technical field of construction engineering and relates to a construction method for foundation pit dewatering slope support. Background technique [0002] Temporary wells excavated for building foundations are called foundation pits. The foundation pit is a temporary project, and its function is to provide a space so that the basic building construction can be carried out in accordance with the position specified by the design. [0003] In order to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, the support, reinforcement and protection measures adopted for the side wall of the foundation pit and the surrounding environment are called foundation pit support. Among them, soil nail wall foundation pit support is the most common and important type of foundation pit support. [0004] The soil nail wall is reinforced by the natural soil through the soil nail w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D19/10
Inventor 焦德贵邓明胜林敏郭辉时康
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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