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Road repairing construction process for filling-digging junction roadbed section

A technology of road repair and construction technology, applied in the direction of roads, roads, infrastructure engineering, etc., can solve problems such as reducing road safety, subsidence, road surface cracks, etc., achieving a significant reinforcement effect, a small disease recurrence rate, and repairing the road surface. cracking effect

Pending Publication Date: 2020-12-04
河北鸿森公路工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the above-mentioned traditional technology, and provide a construction technology for repairing the disease of the subgrade section at the junction of filling and excavation, which solves the problem of subgrade slippage, subsidence, and pits caused by the long-term use of the existing road section of the subgrade section at the junction of filling and excavation. And other problems, which in turn lead to road surface cracks, network cracks, reduce road safety, affect the comfort and stability of the road

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: A kind of road restoration construction technology of subgrade road section at the junction of filling and excavation, comprising the following steps:

[0030] 1) Hole location layout; lay out grouting holes according to the drawings, measure and place the points of anti-slide piles, make marks on the points, and determine the depth of the pile bottom relative to the ground;

[0031] 2) Hole forming: use a drilling machine to drill holes on the surface layer and penetrate the surface layer to the designed depth;

[0032] 3) Clear the hole; blow away the dregs and bad soil in the hole;

[0033] 4) Lower the grouting pipe; after the hole is formed, lower the grouting pipe, and a plurality of Φ6 flower holes are opened at the lower part of the grouting pipe;

[0034] 5) Pile body filling; use gravel as aggregate and mix cement to fill the hole, and fill it to a place 1m below the top surface of the pavement layer;

[0035] 6) prepare slurry; prepare slurry ...

Embodiment 2

[0046] Embodiment 2: A kind of road restoration construction technology of subgrade section at the junction of filling and excavation, comprising the following steps:

[0047] 1) Hole location layout; lay out grouting holes according to the drawings, measure and place the points of anti-slide piles, make marks on the points, and determine the depth of the pile bottom relative to the ground;

[0048] 2) Hole forming: use a drilling machine to drill holes on the surface layer and penetrate the surface layer to the designed depth;

[0049] 3) Clear the hole; blow away the dregs and bad soil in the hole;

[0050] 4) Lower the grouting pipe; after the hole is formed, lower the grouting pipe, and a plurality of Φ6 flower holes are opened at the lower part of the grouting pipe;

[0051] 5) Pile body filling; use gravel as aggregate and mix cement to fill the hole, and fill it to a place 1m below the top surface of the pavement layer;

[0052] 6) prepare slurry; prepare slurry accor...

Embodiment 3

[0065] Embodiment 3: A kind of road restoration construction technology of subgrade road section at the junction of filling and excavation, comprising the following steps:

[0066] 1) Hole layout: lay out grouting holes according to the construction drawing, measure and place the points of the anti-slide piles, mark the points, and determine the depth of the pile bottom relative to the ground;

[0067] 2) Hole forming: use a drilling machine to drill holes on the surface layer and penetrate the surface layer to the designed depth;

[0068] 3) Clear the hole; blow away the dregs and bad soil in the hole;

[0069] 4) Lower the grouting pipe; after the hole is formed, lower the grouting pipe, and a plurality of Φ6 flower holes are opened at the lower part of the grouting pipe;

[0070] 5) Pile body filling; use gravel as aggregate and mix cement to fill the hole, and fill it to a place 1m below the top surface of the pavement layer;

[0071] 6) prepare slurry; prepare slurry ac...

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PUM

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Abstract

The invention provides a filling and excavating junction roadbed section disease repairing construction process. The process comprises the following steps: 1) hole site arrangement; 2) forming holes;forming holes in the surface layer through a drilling machine, and punching the surface layer through; 3) hole cleaning; muck and bad soil in the holes are blown and swept cleanly; 4) lowering a grouting pipe; 5) pile body filling; 6) preparing slurry; preparing slurry according to a water cement ratio of 0.8: 1.0, and fully and uniformly stirring the slurry; 7) hole sealing; 50 cm C30 cement concrete is adopted for pouring and hole sealing; a grouting guide pipe is inserted into the grouting pipe and extends out of the road surface by 20 cm, and after grouting is completed, the grouting guidepipe is cut off till the road surface is flush; and 8) grouting; injecting the prepared slurry into the holes; the problems that a roadbed slips, sinks, pits and the like due to long-term use of an existing filling and excavating junction roadbed section road, then cracks and net cracks of a road surface layer are caused, road safety is reduced, and comfort and stability of the road are affectedare solved.

Description

technical field [0001] The invention relates to the technical field of highway pavement construction, in particular to a road repair construction process for filling and excavating junction subgrade sections. Background technique [0002] With the continuous development of the national economy, the road navigable mileage of our country has also been developed rapidly. According to statistics, as of the end of 2018, the total mileage of national highways reached 4,846,500 kilometers, of which 142,600 kilometers were highways, ranking first in the world in terms of mileage. [0003] However, with the increasing traffic volume and vehicle load, some roads are damaged and diseased, seriously affecting driving comfort and traffic safety, and making road surface maintenance face a severe test. [0004] The subgrade road section at the junction of filling and excavation is the most prone to damage and disease. Due to the long-term repeated action of vehicle loads, and because the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/04E02D15/04
CPCE01C3/04E02D15/04E02D2250/003E02D2300/0023
Inventor 白冬晓温亮辉王树信郝欣
Owner 河北鸿森公路工程技术有限公司