CN112030647A - Repairing construction process for road of filling and digging boundary roadbed road section - Google Patents
Repairing construction process for road of filling and digging boundary roadbed road section Download PDFInfo
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- CN112030647A CN112030647A CN202010144011.2A CN202010144011A CN112030647A CN 112030647 A CN112030647 A CN 112030647A CN 202010144011 A CN202010144011 A CN 202010144011A CN 112030647 A CN112030647 A CN 112030647A
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- grouting
- road
- hole
- pipe
- filling
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/0023—Slurry
Abstract
The invention provides a filling and excavating boundary roadbed road section defect repairing construction process, which comprises the following steps: 1) arranging hole positions; 2) forming a hole; drilling holes on the surface layer by using a drilling machine, and perforating the surface layer; 3) cleaning holes; sweeping the residue soil and the bad soil in the hole; 4) a lower slurry pouring pipe; 5) filling a pile body; 6) preparing slurry; according to the water-cement ratio of 0.8:1.0, preparing slurry, and fully and uniformly stirring the slurry; 7) sealing holes; pouring and sealing holes by adopting 50cm C30 cement concrete; inserting a grouting guide pipe into the grouting pipe, wherein the grouting guide pipe extends out of the road surface by 20cm, and cutting the grouting guide pipe until the grouting guide pipe is flush with the road surface after grouting is finished; 8) grouting; injecting the prepared slurry into the hole; the problem of current fill out dig boundary road bed highway section road long-term use lead to appearing the road bed and slide, sink, pot hole etc. and then lead to road surface layer crack, net crack, reduce road security, influence the travelling comfort and the stability of road is solved.
Description
Technical Field
The invention relates to the technical field of highway pavement construction, in particular to a repairing construction process for filling and digging a boundary roadbed road section.
Background
With the continuous development of national economy, the road navigation mileage of our country is also rapidly developed. By the end of 2018, the total mileage of the national roads reaches 484.65 kilometers, wherein the highway reaches 14.26 kilometers, and the mileage scale is the first in the world.
However, along with the increasing traffic volume of roads, the vehicle load is increased, so that certain roads are damaged and damaged, the driving comfort and the traffic safety are seriously influenced, and the road pavement maintenance faces a severe test.
For the road section of the filling and digging boundary roadbed, which is the road section most prone to damage and disease, due to the repeated action of long-term bearing of vehicle load and the influence of the roadbed on the conditions of terrain, geology, hydrogeology and the like of the passing region, various diseases are generated in the roadbed in the using process, such as problems of roadbed slippage, settlement, pit and groove and the like, further diseases such as surface layer cracks, net cracks and the like are caused, the road safety is greatly reduced, and the comfort and the stability of road traffic and transportation are seriously influenced.
Therefore, the repairing construction process for the road of the filling and digging boundary roadbed road section is provided.
Disclosure of Invention
The invention aims to overcome the defects of the traditional technology, provides a filling and digging junction roadbed road section disease repairing construction process, and solves the problems of roadbed slippage, settlement, pot holes and the like caused by long-term use of the existing filling and digging junction roadbed road section, further causes cracks and network cracks on a road surface layer, reduces the safety of the road, and influences the comfort and the stability of the road.
The technical scheme of the invention is as follows:
a filling and digging junction roadbed road section road repairing construction process comprises the following steps:
1) arranging hole positions; arranging grouting holes according to the calculated intervals, measuring and placing point positions of the anti-slide piles, marking the point positions, and determining the depth of the pile bottom relative to the ground;
2) forming a hole; drilling holes on the surface layer by using a drilling machine, and perforating the surface layer to a designed depth;
3) cleaning holes; sweeping the residue soil and the bad soil in the hole;
4) a lower slurry pouring pipe; after the hole is formed, a grouting pipe is put in, and a plurality of phi 6 flower holes are formed in the lower part of the grouting pipe;
5) filling a pile body; filling holes with broken stones as aggregates and cement to the position 1m below the top surface of the pavement layer;
6) preparing slurry; according to the water-cement ratio of 0.6-1.0: 1.0, preparing slurry, and fully and uniformly stirring the slurry by using a mortar stirrer;
7) sealing holes; pouring and sealing holes by adopting 50cm C30 cement concrete; inserting a grouting guide pipe into the grouting pipe, wherein the grouting guide pipe extends out of the road surface by 20cm, and cutting the grouting guide pipe until the road surface is flush after grouting is finished;
8) grouting; injecting the prepared slurry in the step 5) into the hole by using a pressure pump; and after the strength of the hole sealing concrete reaches more than 70%, connecting the grouting pipe with the hole sealing reserved grouting guide pipe, and performing continuous grouting.
As a preferable technical scheme, the grouting pipe in the step 4) is a phi 40 steel pipe with the wall thickness of 3 mm. The diameter and the thickness of the steel pipe can be adjusted according to the stress calculation.
As a preferable technical scheme, the vertical distance between two adjacent flower holes in the step 4) is 50cm, the flower holes are uniformly distributed along the axial direction and the circumferential direction of the grouting pipe at the injected section, and the top of the grouting pipe is 50cm lower than the top surface of the road surface.
As a preferred technical scheme, the particle size of the crushed stone in the step 5) is 5-10 mm; and 4) mixing 300Kg of P.s.a32.5 slag portland cement into each cubic of crushed stone in the step 4).
As a preferable technical scheme, a water reducing agent and a quick setting agent are added in the slurry preparation process in the step 6).
As a preferable technical scheme, P.s.a32.5 slag portland cement is selected as cement in the step 6), and drinking water for people and livestock is adopted as water.
As a preferable technical scheme, in the step 7), the overlapping length of the grouting pipe and the grouting guide pipe is 10cm, and the grouting guide pipe is DN25PE polyethylene pipe.
As a preferable technical scheme, in the step 8), the grouting pressure is controlled to be 0.5MPa, the closing time is 5min, and the grouting flow is controlled to be 50L/min.
As a preferable technical scheme, in the step 2), the drilling machine is a down-the-hole drilling machine, the hole diameter of the hole is 120mm-160mm, and the hole depth is 5-15 m.
Due to the adoption of the technical scheme, the invention has the following advantages: the filling and digging junction road bed road section disease repairing construction process is adopted to repair the original soil road bed and the filling road bed, the reinforcing effect is obvious, the disease recurrence rate is small, prepared slurry is injected into the hole through a pressure pump at the filling and digging junction, continuous grouting is carried out through the connection of a grouting guide pipe and a grouting pipe, dry materials such as small-particle-size broken stone mixed cement powder are filled after a steel pipe is installed in the hole, grouting diffusion can be assisted, the road bed filling is compact, and the problems of road surface cracking and road bed slippage caused by settlement difference on the cross section of the road bed are effectively repaired.
The present invention will be further described with reference to the following embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used merely for convenience in describing the invention and for simplicity in description, and do not merely indicate or imply that the device or component being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered as limiting the scope of the invention, which is further described below.
Example 1: a filling and digging junction roadbed road section road repairing construction process comprises the following steps:
1) arranging hole positions; arranging grouting holes according to a drawing, measuring and placing point positions of the anti-slide piles, marking the point positions, and determining the depth of the pile bottom relative to the ground;
2) forming a hole; drilling holes on the surface layer by using a drilling machine, and perforating the surface layer to a designed depth;
3) cleaning holes; sweeping the residue soil and the bad soil in the hole;
4) a lower slurry pouring pipe; after the hole is formed, a grouting pipe is put in, and a plurality of phi 6 flower holes are formed in the lower part of the grouting pipe;
5) filling a pile body; mixing broken stone as aggregate with cement to fill the hole until the distance is 1m below the top surface of the pavement layer;
6) preparing slurry; preparing slurry according to the water-cement ratio of 0.6:1.0, and fully and uniformly stirring the slurry by using a mortar stirrer;
7) sealing holes; pouring and sealing holes by adopting 50cm C30 cement concrete; inserting a grouting guide pipe into the grouting pipe, wherein the grouting guide pipe extends out of the road surface by 20cm, and cutting the grouting guide pipe until the road surface is flush after grouting is finished;
8) grouting; injecting the prepared slurry in the step 5) into the hole by using a pressure pump; and after the strength of the hole sealing concrete reaches more than 70%, connecting the grouting pipe with the hole sealing reserved grouting guide pipe, and performing continuous grouting.
And 4), the grouting pipe in the step 4) is a phi 40 steel pipe with the wall thickness of 3 mm.
And 4), the vertical distance between every two adjacent flower holes is 50cm, the flower holes are uniformly distributed along the axial direction and the circumferential direction of the grouting pipe, and the top of the grouting pipe is 50cm lower than the top surface of the road surface.
In the step 5), the particle size of the crushed stone is 5-10 mm;
and 4) mixing 300Kg of P.s.a32.5 slag portland cement into each cubic of crushed stone in the step 4).
And 6) selecting P.s.a32.5 slag portland cement as cement in the step 6), and adopting human and animal drinking water as water.
In the step 7), the lapping length of the grouting pipe and the grouting guide pipe is 10cm, and the grouting guide pipe is a DN25PE polyethylene pipe.
In the step 8), the grouting pressure is controlled at 0.5MPa, the closing time is 5min, and the grouting flow is controlled at 50L/min.
In the step 2), the drilling machine is a down-the-hole drilling machine, the aperture of the open hole is 130mm, and the depth of the open hole is 10 m.
Example 2: a filling and digging junction roadbed road section road repairing construction process comprises the following steps:
1) arranging hole positions; arranging grouting holes according to a drawing, measuring and placing point positions of the anti-slide piles, marking the point positions, and determining the depth of the pile bottom relative to the ground;
2) forming a hole; drilling holes on the surface layer by using a drilling machine, and perforating the surface layer to a designed depth;
3) cleaning holes; sweeping the residue soil and the bad soil in the hole;
4) a lower slurry pouring pipe; after the hole is formed, a grouting pipe is put in, and a plurality of phi 6 flower holes are formed in the lower part of the grouting pipe;
5) filling a pile body; mixing broken stone as aggregate with cement to fill the hole until the distance is 1m below the top surface of the pavement layer;
6) preparing slurry; preparing slurry according to the water-cement ratio of 0.8:1.0, and fully and uniformly stirring the slurry by using a mortar stirrer;
7) sealing holes; pouring and sealing holes by adopting 50cm C30 cement concrete; inserting a grouting guide pipe into the grouting pipe, wherein the grouting guide pipe extends out of the road surface by 20cm, and cutting the grouting guide pipe until the road surface is flush after grouting is finished;
8) grouting; injecting the prepared slurry in the step 5) into the hole by using a pressure pump; and after the strength of the hole sealing concrete reaches more than 70%, connecting the grouting pipe with the hole sealing reserved grouting guide pipe, and performing continuous grouting.
And 4), the grouting pipe in the step 4) is a phi 40 steel pipe with the wall thickness of 3 mm.
And 4), the vertical distance between every two adjacent flower holes is 50cm, the flower holes are uniformly distributed along the axial direction and the circumferential direction of the grouting pipe, and the top of the grouting pipe is 50cm lower than the top surface of the road surface.
In the step 5), the particle size of the crushed stone is 5-10 mm; and 4) mixing 300Kg of P.s.a32.5 slag portland cement into each cubic of crushed stone in the step 4).
And 6) adding a water reducing agent and an accelerating agent in the slurry preparation process.
The water reducing agent is mainly used for improving the strength of the mortar;
the concrete accelerator is a gray powder product prepared by modifying various components such as aluminum oxide, calcined soda, a thickening agent and the like. The cement mortar has the functions of quick setting and rapid hardening and water reducing enhancement, can be quickly set and hardened by adding a proper amount of the quick-setting agent, has higher early strength, and can maintain other properties of the cement.
And 6) selecting P.s.a32.5 slag portland cement as cement in the step 6), and adopting human and animal drinking water as water.
In the step 7), the lapping length of the grouting pipe and the grouting guide pipe is 10cm, and the grouting guide pipe is a DN25PE polyethylene pipe.
In the step 8), the grouting pressure is controlled at 0.5MPa, the closing time is 5min, and the grouting flow is controlled at 50L/min.
In the step 2), the drilling machine is a down-the-hole drilling machine, the hole diameter of the hole is 140mm, and the hole depth is 5 m.
Example 3: a filling and digging junction roadbed road section road repairing construction process comprises the following steps:
1) arranging hole positions; arranging grouting holes according to a construction drawing, measuring and placing point positions of the anti-slide piles, marking the point positions, and determining the depth of the pile bottom relative to the ground;
2) forming a hole; drilling holes on the surface layer by using a drilling machine, and perforating the surface layer to a designed depth;
3) cleaning holes; sweeping the residue soil and the bad soil in the hole;
4) a lower slurry pouring pipe; after the hole is formed, a grouting pipe is put in, and a plurality of phi 6 flower holes are formed in the lower part of the grouting pipe;
5) filling a pile body; mixing broken stone as aggregate with cement to fill the hole until the distance is 1m below the top surface of the pavement layer;
6) preparing slurry; according to the water-cement ratio of 1.0: preparing slurry according to the proportion of 1.0, and fully and uniformly stirring the slurry by using a mortar stirrer;
7) sealing holes; pouring and sealing holes by adopting 50cm C30 cement concrete; inserting a grouting guide pipe into the grouting pipe, wherein the grouting guide pipe extends out of the road surface by 20cm, and cutting the grouting guide pipe until the road surface is flush after grouting is finished;
8) grouting; injecting the prepared slurry in the step 5) into the hole by using a pressure pump; and after the strength of the hole sealing concrete reaches more than 70%, connecting the grouting pipe with the hole sealing reserved grouting guide pipe, and performing continuous grouting.
And 4), the grouting pipe in the step 4) is a phi 50 steel pipe with the wall thickness of 3 mm.
And 4), the vertical distance between every two adjacent flower holes is 50cm, the flower holes are uniformly distributed along the axial direction and the circumferential direction of the grouting pipe, and the top of the grouting pipe is 50cm lower than the top surface of the road surface.
In the step 5), the particle size of the crushed stone is 5-20 mm;
and 4) mixing 300Kg of P.s.a32.5 slag portland cement into each cubic of crushed stone in the step 4).
And 6) adding a water reducing agent and an accelerating agent in the slurry preparation process.
The water reducing agent is mainly used for improving the strength of the mortar;
the concrete accelerator is a gray powder product prepared by modifying various components such as aluminum oxide, calcined soda, a thickening agent and the like. The cement mortar has the functions of quick setting and rapid hardening and water reducing enhancement, can be quickly set and hardened by adding a proper amount of the quick-setting agent, has higher early strength, and can maintain other properties of the cement.
And 6) selecting P.s.a32.5 slag portland cement as cement in the step 6), and adopting human and animal drinking water as water.
In the step 7), the lapping length of the grouting pipe and the grouting guide pipe is 10cm, and the grouting guide pipe is a DN25PE polyethylene pipe.
In the step 8), the grouting pressure is controlled at 0.5MPa, the closing time is 5min, and the grouting flow is controlled at 50L/min.
In the step 2), the drilling machine adopts a down-the-hole drilling machine, the aperture of the open hole is 150-160mm, and the depth of the open hole is 12 m.
The above examples are only intended to illustrate the technical aspects of the present invention, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. From the above conception, those skilled in the art can make various changes without inventive labor, which fall within the scope of the present invention.
Claims (9)
1. The repairing construction process of the road of the filling and digging boundary roadbed road section is characterized by comprising the following steps:
1) arranging hole positions; calculating the pile spacing according to the stability, and arranging grouting hole positions according to the calculation; measuring and placing point positions of the anti-slide piles, marking the point positions, and determining the depth of the pile bottom relative to the ground;
2) forming a hole; drilling holes on the surface layer by using a drilling machine, and perforating the surface layer to a designed depth;
3) cleaning holes; blowing the residue soil and the damaged soil in the hole;
4) a lower slurry pouring pipe; after the hole is formed, a grouting pipe is put in, and a plurality of phi 6 flower holes are formed in the lower part of the grouting pipe;
5) filling a pile body; filling holes with broken stones as aggregates and cement to the position 1m below the top surface of the pavement layer;
6) preparing slurry; according to the water-cement ratio of 0.6-1.0: preparing slurry according to the proportion of 1.0, and fully and uniformly stirring the slurry by using a mortar stirrer;
7) sealing holes; pouring and sealing holes by adopting 50cm C30 cement concrete; inserting a grouting guide pipe into the grouting pipe, wherein the grouting guide pipe extends out of the road surface by 20cm, and cutting the grouting guide pipe until the grouting guide pipe is flush with the road surface after grouting is finished;
8) grouting; injecting the prepared slurry in the step 5) into the hole by using a pressure pump; and after the strength of the hole sealing concrete reaches more than 70%, connecting the grouting pipe with the hole sealing reserved grouting guide pipe, and performing continuous grouting.
2. The repairing construction process for the road of the filling and digging boundary roadbed section according to the claim 1, is characterized in that: and 4), the grouting pipe in the step 4) is a phi 40 steel pipe with the wall thickness of 3 mm.
3. The repairing construction process for the road of the filling and digging boundary roadbed section according to the claim 1, is characterized in that: and 4), the vertical distance between every two adjacent flower holes is 50cm, the flower holes are uniformly distributed along the axial direction and the circumferential direction of the grouting pipe, and the top of the grouting pipe is 50cm lower than the top surface of the road surface.
4. The repairing construction process for the road of the filling and digging boundary roadbed section according to the claim 1, is characterized in that: in the step 5), the particle size of the crushed stone is 5-10 mm; and 4) mixing 300Kg of P.s.a32.5 slag portland cement into each cubic of crushed stone in the step 4).
5. The repairing construction process for the road of the filling and digging boundary roadbed section according to the claim 1, is characterized in that: and 6) adding a water reducing agent and an accelerating agent in the slurry preparation process.
6. The repairing construction process for the road of the filling and digging boundary roadbed section according to the claim 1, is characterized in that: and 6) selecting P.s.a32.5 slag portland cement as cement in the step 6), and adopting human and animal drinking water as water.
7. The repairing construction process for the road of the filling and digging boundary roadbed section according to the claim 1, is characterized in that: in the step 7), the lapping length of the grouting pipe and the grouting guide pipe is 10cm, and the grouting guide pipe is DN25PE polyethylene pipe.
8. The repairing construction process for the road of the filling and digging boundary roadbed section according to the claim 1, is characterized in that: in the step 8), the grouting pressure is controlled at 0.5MPa, the closing time is 5min, and the grouting flow is controlled at 50L/min.
9. The repairing construction process for the road of the filling and digging boundary roadbed section according to the claim 1, is characterized in that: in the step 2), the drilling machine adopts a down-the-hole drilling machine, the aperture of the open hole is 160mm, and the depth of the open hole is 5-15 m.
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| CN202010144011.2A CN112030647A (en) | 2020-03-04 | 2020-03-04 | Repairing construction process for road of filling and digging boundary roadbed road section |
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| CN202010144011.2A CN112030647A (en) | 2020-03-04 | 2020-03-04 | Repairing construction process for road of filling and digging boundary roadbed road section |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113322759A (en) * | 2021-06-18 | 2021-08-31 | 驻马店市华中公路设计有限公司 | Filling and digging boundary roadbed road section defect repairing construction process |
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Inventor after: Wen Lianghui Inventor after: Kang Fei Inventor after: Bai Dongxiao Inventor after: Wang Shuxin Inventor after: Ye Runzhong Inventor after: Liu Zhiyuan Inventor after: Hao Xin Inventor before: Bai Dongxiao Inventor before: Wen Lianghui Inventor before: Wang Shuxin Inventor before: Hao Xin |