CN218911003U - Along-river hydraulic filling road directly used on river bed - Google Patents

Abstract

The utility model provides a road for filling along a river, which is directly used on a river bed, belongs to the field of road construction along the river, and comprises a roadbed structure layer, wherein a road surface structure layer is paved at the upper end of the roadbed structure layer, and the roadbed structure layer and the outer side of the road surface structure layer are both wrapped by slope protection structures; the roadbed structure layer comprises a civil grid and a sand filling pipe bag, the slope protection structure comprises a geomembrane, an iron wire net and concrete, the geomembrane is laid on the outer sides of the roadbed structure layer and the pavement structure layer, the iron wire net is laid on the outer sides of the geomembrane, and the concrete is sprayed in the iron wire net; the roadbed structure layer, the pavement structure layer and the side slope protection structure together form a structural section of the hydraulic reclamation road along the river, the hydraulic reclamation device is simple in structure, can exert the application effects of hydraulic reclamation of sand filling pipe bags and slag on a deep silt layer or an ultra-soft foundation to the greatest extent only by simple operation, and saves a certain construction period and cost.

Description

Along-river hydraulic filling road directly used on river bed

Technical Field

The utility model relates to the field of construction of a road for along-the-river operation, in particular to a road for along-the-river hydraulic filling, which is directly used on a river bed.

Background

The soft foundation treatment engineering refers to ten layers with lower bearing capacity than other ten layers in the engineering foundation or foundation ten layers with lower bearing capacity. And (3) draining water, rolling, adding other earth materials, or adding one or two building materials to improve the bearing capacity. The soft foundation treatment is carried out because the foundation is not firm enough before the building, in order to prevent the accidents such as unstable building and the like caused by the sinking and pulling of the foundation after the building, the soft foundation needs to be treated, so that the foundation is settled and becomes firm enough, the consolidation degree and the stability of the soft foundation are improved to the design requirements, the process is called soft foundation treatment, namely soft foundation treatment, and the soft foundation treatment can be carried out on deep silt layers of rivers, lakes or the impact fill beach areas and on large-area ultra-soft foundations of land areas, so that the road can be filled and constructed along the rivers, the lakes and the seas.

However, on a deep silt layer in a river or lake or a shoal area and on a large-area ultra-soft foundation in a land area, it is extremely difficult to construct a road by using a soft foundation treatment manner such as replacement and filling, because the carrying capacity on the deep silt layer or the ultra-soft foundation is low and the water level along the river is higher than the current ground and is affected by tides.

Disclosure of Invention

The utility model provides a road construction method for the along-river reclamation of a river, which aims to solve the problem that the soft foundation of the along-river reclamation road is difficult to treat.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the river-along hydraulic filling road directly used on the riverbed comprises a roadbed structure layer, wherein a pavement structure layer is paved at the upper end of the roadbed structure layer, and the roadbed structure layer and the outer side of the pavement structure layer are wrapped by adopting a slope protection structure;

the roadbed structure layer comprises a civil grid and sand filling pipe bags, the civil grid is paved on the original ground, the sand filling pipe bags are paved at the upper end of the civil grid, and a plurality of civil grids and sand filling pipe bags are staggered;

the pavement structure layer comprises a base layer and a surface layer, wherein the base layer is paved at the upper end of the sand filling pipe bag at the uppermost end, the surface layer is paved at the upper end of the base layer, the base layer comprises a lower base layer and an upper base layer, the surface layer comprises an asphalt adhesive layer, an asphalt surface layer lower surface layer and an asphalt surface layer upper surface layer, the lower base layer is paved at the upper end of the sand filling pipe bag at the uppermost end, the upper base layer is paved at the upper end of the lower base layer, the asphalt adhesive layer is paved at the upper end of the upper base layer, the asphalt surface layer lower surface layer is paved at the upper end of the asphalt surface layer lower surface layer, and the asphalt surface layer upper surface layer is paved at the upper end of the asphalt surface layer lower surface layer;

the side slope protection structure comprises a geomembrane, an iron wire net and concrete, wherein the geomembrane is paved on the outer sides of the roadbed structure layer and the pavement structure layer, the iron wire net is paved on the outer sides of the geomembrane, and the concrete is sprayed in the iron wire net;

the roadbed structure layer, the pavement structure layer and the side slope protection structure jointly form a structural section of the hydraulic filling road along the river.

As a further description of the above technical solution: and each layer of the sand filling pipe bags is 50cm thick, geogrids are continuously paved among each layer of the sand filling pipe bags, and the sand filling pipe bag at the uppermost end is filled to 50-70cm above the highest water level of the river surface.

As a further description of the above technical solution: the material of lower basic unit is the sediment and 61cm thick, go up the basic unit and be the 5% cement stabilized macadam of 50cm thick, the material of asphalt pavement lower surface layer is AC-20 asphalt concrete, just asphalt pavement lower surface layer is 5cm thick, the material of asphalt pavement upper surface layer is 4cm thick AC-13C asphalt concrete.

As a further description of the above technical solution: the thickness of the wire netting is 2mm, and the concrete is C20 concrete slope protection with the thickness of 5 cm.

The utility model has the beneficial effects that:

under the cooperation of the roadbed structure layer, the pavement structure layer and the side slope protection structure, the sand filling pipe bag has the advantages of high construction speed, low cost, no influence of rainy seasons, soil source saving and the like, the sand filling pipe bag is filled with sand and slags form the roadbed structure layer of the road, the sand filling pipe bag is filled with sand and slags are carried out underwater, the compactness and deflection value of the roadbed are ensured, the water and the water are integrated, the difficulty of building the road along a river is overcome, a set of construction technology application of a self-forming system is formed, the application effect of the sand filling pipe bag in filling and slags on a deep silt layer or an ultra-soft foundation is exerted to the greatest extent, and a certain period and cost are saved; meanwhile, the sand filling pipe bag blowing filling technology is adopted to fill the roadbed, and the pipe bag sand filling blowing filling technology is applied to the implementation of road building along the river.

Drawings

In order to more clearly show a along-the-river reclamation road directly used on the river bed, the following figures are shown;

FIG. 1 is a schematic cross-sectional view of a construction of the present utility model along a river reclamation road.

Wherein reference numerals in the drawings;

1. a roadbed structure layer; 2. a pavement structural layer; 3. a slope protection structure; 10. geogrid; 11. filling sand into a pipe bag; 20. a base layer; 200. a lower base layer; 201. an upper base layer; 21. a surface layer; 210. an asphalt adhesive layer; 211. an asphalt pavement lower layer; 212. an asphalt surface layer upper layer; 30. geomembrane; 31. a wire netting; 32. and (3) concrete.

Detailed Description

Referring to fig. 1, fig. 1 shows a road for filling along a river, which is provided in the embodiment of the present application, and is directly used on a river bed, and includes a roadbed structure layer 1, a pavement structure layer 2 is laid at the upper end of the roadbed structure layer 1, and the outer sides of the roadbed structure layer 1 and the pavement structure layer 2 are wrapped by a side slope protection structure 3; the roadbed structure layer 1 comprises a civil grid and sand filling pipe bags 11, the civil grid is paved on the original ground, the sand filling pipe bags 11 are paved at the upper end of the civil grid, and a plurality of civil grids and sand filling pipe bags 11 are staggered; the pavement structure layer 2 comprises a base layer 20 and a surface layer 21, wherein the base layer 20 is paved at the upper end of the sand filling pipe bag 11 at the uppermost end, the surface layer 21 is paved at the upper end of the base layer 20, the base layer 20 comprises a lower base layer 200 and an upper base layer 201, the surface layer 21 comprises an asphalt adhesive layer 210, an asphalt surface layer lower surface layer 211 and an asphalt surface layer upper surface layer 212, the lower base layer 200 is paved at the upper end of the sand filling pipe bag 11 at the uppermost end, the upper base layer 201 is paved at the upper end of the lower base layer 200, the asphalt adhesive layer 210 is paved at the upper end of the asphalt adhesive layer 210, the asphalt surface layer lower surface layer 211 is paved at the upper end of the asphalt surface layer lower surface layer 211; the side slope protection structure 3 comprises a geomembrane 30, an iron wire net 31 and concrete 32, wherein the geomembrane 30 is paved on the outer sides of the roadbed structure layer 1 and the pavement structure layer 2, the iron wire net 31 is paved on the outer sides of the geomembrane 30, and the concrete 32 is sprayed in the iron wire net 31; the roadbed structure layer 1, the pavement structure layer 2 and the side slope protection structure 3 together form a structural section along the river hydraulic filling road.

As a further description of the above technical solution: the sand filling pipe bags 11 are 50cm thick in each layer, the geogrid 10 is laid between each layer of the sand filling pipe bags 11 in an uninterrupted mode, and the sand filling pipe bag 11 at the uppermost end is filled to 50-70cm above the highest water level of the river surface.

As a further description of the above technical solution: the lower base layer 200 is made of slag and 61cm thick, the upper base layer 201 is made of 5% cement stabilized macadam with the thickness of 50cm, the lower asphalt layer 211 is made of AC-20 asphalt concrete 32, the lower asphalt layer 211 is made of 5cm thick, and the upper asphalt layer 212 is made of AC-13C asphalt concrete 32 with the thickness of 4 cm.

As a further description of the above technical solution: the thickness of the wire netting 31 is 2mm, and the concrete 32 is C20 concrete 32 slope protection with the thickness of 5 cm.

The concrete construction steps are as follows:

construction preparation, measurement paying-off, surface cleaning, geogrid 10 laying, roadbed hydraulic filling, slag filling, slope spraying and mixing protection, water stable laying and asphalt pavement construction.

Firstly, performing construction preparation, planning a hydraulic filling line, conveying a sand conveying pipe to an operation roadbed area, and preparing a sand conveying pipeline for the construction preparation of a sand filling hydraulic filling process, wherein the sand conveying pipeline mainly comprises a pipeline road for conveying sand slurry to an operation hydraulic filling area by a sand blowing ship, and the outlet of the sand conveying pipe is centrally arranged in the operation hydraulic filling area and is hydraulically filled to the tail end of a hydraulic filling bin by adopting an end inlet method; at the beginning of the hydraulic filling, the hydraulic filling should be horizontally performed layer by layer from the lower part to the higher part. And laying a sand conveying pipe along the central line of the line according to the trend of the line.

And 2, measuring and paying off the beach surface, setting out a construction side line on the beach surface by using a total station, and marking by using a line flag.

Reed, weed or other aquatic plants grow on the 3-beach surface, and the surface cleaning operation is performed by adopting an amphibious long-arm excavator which is provided with a hollow buoyancy tank type chassis, so that the excavator has the capability of walking and stopping on soft ground such as swamps, beaches and the like. The removed weeds, seedlings and the like are temporarily piled on two sides of a construction side line, and the side line has the back pressure anti-slip effect, and the weeds are excavated and transported outwards before the side line is used for slope protection.

4, after the surface cleaning operation is finished and the experience is qualified, the excavator is matched with the manual paving geogrid 10. Spreading to spread the geogrid 10 along the direction vertical to the axis of the road, fixing the initial edge with a broken stone bag after accurate positioning, arranging by manual work in a straight line, sequentially and synchronously rolling and spreading forward, arranging the broken stone bag to press the geogrid 10 in a plum blossom shape, and obliquely inserting long bamboo rods into the cloth body below the mud surface to prevent the geogrid 10 from floating along with water during tide rising. In order to facilitate the walking of the operation workers, the cloth cover can be paved with sporadic bamboo curtains to prevent sinking; immediately after one geogrid 10 is laid, the next geogrid is laid. The joint adopts a principle of 'front pressing and back' when the geogrid 10 is paved, namely the front geogrid 10 is pressed against the back geogrid 10 to ensure that the lap joint can not be turned up when filling the pipe bag filler is occupied, the geogrid 10 lap joint adopts a high-strength nylon rope to carry out lap joint treatment, and the lap joint width is not less than 30cm.

5, manufacturing a tube bag: the width of the bag body is determined according to the original road width, elevation and embankment slope, and the settlement amount is properly considered, and the upper and lower staggered joints are considered. According to the taken soil materials, filling machines and filling methods. The bag body is a cylinder, and the length of the bag body is generally 30-40 m according to the width of the prism section at different heights and the backstop size.

And 6, laying a pipe bag: before laying, obstacle clearing is carried out within the laying range, so that the pipe bags are prevented from being punctured. And (5) manually conveying the pipe bags to a laying area, and adjusting the positions of the pipe bags by measuring lofting until the positions meet the requirements. And then the constructor fixes the filling inlet slurry bag opening and the filling inlet slurry sleeve opening, the filling speed needs to be controlled during the early filling, the filling is carried out normally after the pipe bag is basically stable, and the filling process needs to pay attention to the filling condition of the pipe bag in real time, so that the occurrence of the events such as the sliding out of the filling pipe, the bag explosion of the pipe bag and the like is prevented. And filling layers, wherein each layer is 50cm thick, and immediately binding a sand blowing pipe orifice by a rope after filling, so as to prevent soil loss in the pipe bag.

7, leveling and rolling: the leveling adopts a water flow self-flowing mode during hydraulic filling as much as possible, and is provided with a manual leveling mode so as to ensure that hydraulic filling sand drainage is not disturbed after solidification. The flattened sand or the sand with longer drainage time must be fully irrigated, and the irrigation is carried out by adopting a pipeline water blowing mode. And rolling after the mixture is fully wetted and the water is drained and solidified. Immediately after the blow-fill sand is drained and consolidated, rolling must be performed within a suitable water content range to ensure rolling quality.

8, the slag is filled and transported to the site by adopting a small-sized self-discharging automobile. After the dump truck is unloaded, the excavator is matched with the bulldozer to be rough and flat, and then the leveling machine is matched with the manual leveling machine to indicate the pile pull wire to be precisely leveled according to the elevation. When rolling, the straight line section is arranged from two sides to the middle, and the curve section is arranged to be ultrahigh and is longitudinally advanced and retreated from the inner side to the outer side; when the vibratory roller is adopted for rolling, static pressure is not vibrated in the first pass, then the static pressure is firstly slowed down and then is fast, weak vibration is carried out to strong vibration, and the front and back wheel tracks overlap by 40-50 cm. In the construction process, if the construction is interrupted due to weather and the like, the construction needs to be re-pressed after re-construction. For areas unsuitable for compaction by road rollers, a small compacting machine is used for compacting.

The 9 side slopes are protected by paving a geomembrane 30, hanging a steel wire net and spraying concrete 32 so as to prevent corrosion of the pipe bags, prevent seepage and drift collision, prevent tide corrosion and destroy the integrity of the pipe bag roadbed.

The 10 water stabilization construction and the asphalt pavement construction are basically consistent with the conventional road construction method, and the application characteristics of the application are mainly roadbed construction, so that conditions are created for the conventional construction of water stabilization and asphalt, and the construction is convenient.

On a deep silt layer in a river lake or a flushing and filling beach area and on a large-area ultra-soft foundation in a land area, the requirement of a road construction road on the safety stability of the road is high, and the river bottom is all silt and silt, so that the road construction is carried out by adopting a pipe bag filling and sand blowing method, namely, sand is conveyed to a nearby berthing and blowing construction ship by using a sand carrier by utilizing the characteristics of abundant nearby river channel resources and sufficient local silt and sand, the sand is conveyed into a newly built pipe bag paved along the river channel by using a high-power slurry pump machine through the pipe way by the blowing and filling construction ship, and the subsequent construction can be carried out after the pipe bag is blown and filled to be 0.5-0.7 m above the highest water level of the river channel. In order to avoid partial sludge being extruded upwards to form a bag, the sand filling pipe bags 11 are hydraulically filled and pushed in the advancing direction of the route by adopting full-section parallel. The full-section approach method is adopted on the pipe bag after sand filling and blowing filling, the slag-down roadbed is synchronously filled and pushed to the advancing direction of the route, and the small transport vehicle is used for transporting materials, so that the situation that the filling thickness is too thick due to the fact that the driving track is repeatedly acted on the same position all the time is avoided. The sand filling pipe bags 11 are filled and slags are generated to form the roadbed structure layer 1 of the road, the sand filling pipe bags 11 are filled underwater, slags are generated on the water, the compactness and deflection value of the roadbed are guaranteed, the water and the water form a whole, a series of difficulties in building the road along the river are overcome, a set of construction technology application of a self-forming system is formed, the application effect of the sand filling pipe bags 11 in filling and slags on a deep silt layer or an ultra-soft foundation is exerted to the greatest extent, and a certain construction period and cost are saved.

Working principle:

when in use, firstly, a layer of geogrid 10 is paved on the original ground, then, sand filling pipe bags 11 are paved on the geogrid 10, the geogrid 10 is directly and continuously paved on the original ground, after the first layer of geogrid 10 is paved, the sand filling pipe bags 11 are filled in layers and filled to 50-70cm above the highest water level of the river surface, the geogrid 10 is continuously paved in each layer of sand filling pipe bags 11 and bags, the geogrid 10 and the sand filling pipe bags 11 are combined and integrally form a roadbed structure layer 1, then, a pavement structure layer 2 is paved on the roadbed structure layer 1, wherein, the lower base layer 200 is directly paved on the sand filling pipe bags 11 by utilizing the lower base layer 200, the paved lower base layer 200 is compacted by adopting 61cm thick slag, the upper base layer 201 is paved on the lower base layer 200 by adopting 50cm5% cement stabilized macadam, the asphalt base layer 210 is paved on the upper base layer 201, the asphalt surface layer lower surface layer 211 is paved on the asphalt adhesive layer 210, the asphalt surface layer lower surface layer 211 is paved on the asphalt surface layer lower surface layer 211 by adopting 5cm thick AC-20C asphalt concrete, the asphalt surface layer upper surface layer 212 is paved on the asphalt surface layer lower surface layer 211 by adopting 4cm thick AC-13C asphalt concrete, at the moment, the lower base layer 200, the upper base layer 201, the asphalt adhesive layer 210, the asphalt surface layer lower surface layer 211 and the asphalt surface layer upper surface layer 212 are integrally formed into a pavement structure layer 2, then a geomembrane 30 is paved on a side slope after the road is formed, an iron wire net 31 is hung on the geomembrane 30, concrete 32 is sprayed on the hung iron wire net 31, at the moment, the geomembrane 30, the iron wire net 31 and the sprayed concrete 32 are integrally formed into a side slope protection structure 3, and finally the pavement structure layer 1, the pavement structure layer 2 and the side slope protection structure 3 are integrally formed into a structural section along a river reclamation road.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure of the utility model herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It is further understood that the use of relational terms such as "first" and "second", and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The utility model is not limited to the precise construction which has been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims (4)

1. The river-along hydraulic filling road directly used on a river bed is characterized by comprising a roadbed structure layer (1), wherein a pavement structure layer (2) is paved at the upper end of the roadbed structure layer (1), and the roadbed structure layer (1) and the outer side of the pavement structure layer (2) are wrapped by a slope protection structure (3);

the roadbed structure layer (1) comprises a civil grid and sand filling pipe bags (11), the civil grid is paved on the original ground, the sand filling pipe bags (11) are paved at the upper end of the civil grid, and a plurality of civil grids and the sand filling pipe bags (11) are staggered;

the pavement structure layer (2) comprises a base layer (20) and a surface layer (21), wherein the base layer (20) is paved at the upper end of the sand filling pipe bag (11) at the uppermost end, the surface layer (21) is paved at the upper end of the base layer (20), the base layer (20) comprises a lower base layer (200) and an upper base layer (201), the surface layer (21) comprises an asphalt adhesive layer (210), an asphalt surface layer lower surface layer (211) and an asphalt surface layer upper surface layer (212), the lower base layer (200) is paved at the upper end of the sand filling pipe bag (11) at the uppermost end, the upper base layer (201) is paved at the upper end of the lower base layer (200), the asphalt adhesive layer (210) is paved at the upper end of the upper base layer (201), the asphalt surface layer lower surface layer (211) is paved at the upper end of the asphalt surface layer (211), and the asphalt surface layer upper surface layer (212) is paved at the upper end of the asphalt surface layer lower surface layer (211).

The side slope protection structure (3) comprises a geomembrane (30), an iron wire net (31) and concrete (32), wherein the geomembrane (30) is paved on the outer sides of the roadbed structure layer (1) and the pavement structure layer (2), the iron wire net (31) is paved on the outer side of the geomembrane (30), and the concrete (32) is sprayed in the iron wire net (31);

the roadbed structure layer (1), the pavement structure layer (2) and the side slope protection structure (3) jointly form a structural section of the hydraulic reclamation road along the river.

2. A hydraulic reclamation road directly applied to a riverbed according to claim 1, wherein: and each layer of the sand filling pipe bags (11) is 50cm thick, geogrids (10) are continuously paved among each layer of the sand filling pipe bags (11), and the sand filling pipe bags (11) at the uppermost end are filled to 50-70cm above the highest water level of the river surface.

3. A hydraulic reclamation road directly applied to a riverbed according to claim 1, wherein: the material of lower basic unit (200) is the sediment and thick 61cm down, go up basic unit (201) and be the 5% cement stabilized macadam of 50cm thick, the material of asphalt pavement lower surface layer (211) is AC-20 asphalt concrete (32), just asphalt pavement lower surface layer (211) is thick 5cm, the material of asphalt pavement upper surface layer (212) is AC-13C asphalt concrete (32) of 4cm thick.

4. A dredger fill road for direct use on a riverbed as claimed in claim 3, wherein: the thickness of the wire netting (31) is 2mm, and the concrete (32) is C20 concrete (32) slope protection with the thickness of 5 cm.

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