Novel reinforcing method for underground comprehensive pipe gallery slope

A technology of integrated pipe gallery and slope, applied in excavation, construction, infrastructure engineering, etc., can solve problems such as waste of resources, increase of soil pore water pressure, slope collapse and landslide, etc., to reduce the danger of landslides and improve water permeability. performance, the effect of good landslide resistance

Inactive Publication Date: 2018-11-06
CHINA MCC17 GRP
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  • Claims
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Problems solved by technology

If the support of this method is blocked due to the drainage hole, the water cannot be drained, and the accumulation of time will increase the pore water pressure in the soil, and then add the soil's own weight. When the gravity exceeds the shear capacity of the sprayed anchor surface, There is a danger of slope collapse and landslides
The foundation pit of the pipe gallery needs to be backfilled after the main body of the pipe gallery is formed. At this time, the spray anchor surface needs to be removed, forming a large amount of concrete residue, and the steel mesh cannot be reused, resulting in waste of resources and increased support costs

Method used

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  • Novel reinforcing method for underground comprehensive pipe gallery slope

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Embodiment Construction

[0020] Now in conjunction with the accompanying drawings, a new method for strengthening the slope of the underground comprehensive utility gallery proposed by the present invention will be further described.

[0021] The method of the present invention can be used for foundation pit side slope support and reinforcement of the open cut method, and the specific operation steps are as follows:

[0022] Step 1: Slope 5 processing

[0023] Before the construction, the side slope 5 should be effectively cleaned to remove loose layers and miscellaneous soils that are easy to slip and affect the stability of the side slope 5, so as to make the slope as smooth as possible to facilitate the laying of waste tires 1.

[0024] Step 2: Laying of waterproof geotextile 3

[0025] After the slope 5 is cleared, the waterproof geotextile 3 is laid. When laying, manual rolling should be used, the cloth surface should be flat, and an appropriate amount of deformation allowance should be left. ...

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Abstract

The invention discloses a novel reinforcing method for an underground comprehensive pipe gallery slope. The foundation pit slope of the pipe gallery is reinforced by using a combination way of waste tires, short nails and waterproof geotextiles, and the construction steps comprise the followings in sequence, slope processing, waterproof geotextile laying, waste tire laying and short nail nailing.The novel reinforcing method for the underground comprehensive pipe gallery slope is applied in supporting and reinforcing of the underground comprehensive pipe gallery slope, the supporting cost of the foundation pit can be greatly reduced under the premise of satisfying the construction needs, the waste tires, the short nails, and the waterproof geotextiles can be reused and recycled, and energysaving and environmental protection are achieved.

Description

technical field [0001] The invention belongs to the technology in the construction of underground comprehensive pipe gallery foundation pit open excavation method, and in particular relates to a novel method for reinforcing the side slope of underground comprehensive pipe gallery. Background technique [0002] At present, in the construction process of underground comprehensive pipe corridors in large cities, in order to save costs, most of them are constructed by open-cut method. In open cut construction, the slope reinforcement after foundation pit excavation is the key to the safety of foundation pit operation. The conventional method is to use an excavator to brush the slope. After excavating to the grading coefficient required by the design, firstly spray a layer of concrete, then hang the steel mesh sheet, install the drain hole, and finally use short nails for reinforcement, and spray the anchor concrete support. protect. If the support of this method is blocked due...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20
CPCE02D17/205
Inventor 揭恒吴建国
Owner CHINA MCC17 GRP
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