CN112458813A

CN112458813A - Temporary road structure and construction method thereof

Info

Publication number: CN112458813A
Application number: CN202011395663.XA
Authority: CN
Inventors: 魏源; 陈平; 杨刚; 龙科模; 梁肖江; 尹培; 龚平; 李劲夫
Original assignee: China Railway Erju Co Ltd; China Railway Erju 5th Engineering Co Ltd
Current assignee: China Railway Erju Co Ltd; China Railway Erju 5th Engineering Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-03-09

Abstract

The invention relates to a temporary road structure and a construction method thereof, wherein a first anti-seepage film layer, a bentonite waterproof cushion layer and a roadbed body are sequentially paved on the temporary road structure from bottom to top; the first anti-seepage film layer is laid above the original anti-seepage film layer of the garbage pile body; the top end of the road base body is provided with a road surface; the temporary road structure can effectively prevent the anti-seepage film from being punctured so as to avoid the leakage of landfill gas and percolate in the garbage pile body and influence on the overall stability of the garbage pile body; meanwhile, the pavement is smooth, the capacity of vertical load transferred downwards from the pavement can be borne during the temporary road period, and the load is effectively diffused, so that the garbage pile body cannot sink or deform. The road base and the road surface are a hybrid structure including earth and crushed stone.

Description

Temporary road structure and construction method thereof

Technical Field

The invention relates to the technical field of traffic road construction, in particular to a temporary road structure and a construction method thereof.

Background

The condition that the garbage dump body slides or the mixed flow of rain and sewage pollutes the environment is caused by the fact that rainwater cannot be discharged when raining due to aging of matched equipment or damage of percolate pipelines in the original flood discharge tunnel can often appear in the urban refuse landfill site. When a new flood drainage tunnel is built or field maintenance is carried out, in order to conveniently convey personnel, materials and equipment required by field construction, a temporary road needs to be newly built on a garbage pile body impermeable membrane (the impermeable membrane is an HDPE impermeable membrane laid on the surface of the garbage pile body).

At present, a temporary road is newly built on an impermeable membrane of a garbage pile body, and the following two modes are generally adopted: the other is that a large piece of rubble is directly paved on the anti-seepage film of the garbage pile body, and a layer of broken stone is paved on the top of the anti-seepage film to form a temporary road structure. The temporary road structure is convenient to construct, but in the process of filling and rolling the rubble, because the edges and corners of the rubble are irregular, an anti-seepage film is very easy to pierce, so that landfill gas and percolate in a garbage pile are leaked, the overall stability of the garbage pile is influenced, and great safety risks and potential environmental pollution hazards exist. The other method is to directly lay a steel plate roadbed box on the impermeable membrane of the garbage pile body. The temporary road structure is convenient to construct, but cannot be leveled on a large scale due to poor flatness of the surface of the garbage pile, and after a steel plate roadbed box is laid, vehicles are difficult to drive, so that traffic safety accidents are easily caused. Meanwhile, the self bearing capacity of the garbage pile body is extremely low, the dynamic load generated by repeatedly rolling the vehicle is borne for a long time, the phenomena of uneven settlement and deformation easily occur, the anti-seepage film is easily pierced by the steel plate roadbed box made of rigid materials in the process, so that the landfill gas and the percolate in the garbage pile body are leaked, the integral stability of the garbage pile body is influenced, and certain safety risk and potential environmental pollution hazard exist.

Disclosure of Invention

The invention aims to: aiming at the problems that the seepage-proof membrane is easy to puncture, the pavement smoothness is poor or the dynamic load generated by repeated rolling of vehicles is borne for a long time so as to cause uneven settlement and deformation of the garbage pile body in the prior art when a temporary road is newly built on the seepage-proof membrane of the garbage pile body, the temporary road structure and the construction method thereof are provided. The temporary road structure can effectively prevent the anti-seepage film from being punctured so as to avoid the leakage of landfill gas and percolate in the garbage pile body and influence on the overall stability of the garbage pile body; meanwhile, the pavement is smooth, the capacity of vertical load transferred downwards from the pavement can be borne during the temporary road period, and the load is effectively diffused, so that the garbage pile body cannot sink or deform.

In order to achieve the purpose, the invention adopts the technical scheme that:

a temporary road structure is sequentially paved with a first anti-seepage film layer, a bentonite waterproof cushion layer and a roadbed body from bottom to top;

the first anti-seepage film layer is laid above the original anti-seepage film layer of the garbage pile body;

the top end of the road base body is provided with a road surface;

the road base and the road surface are a hybrid structure including earth and crushed stone.

The invention provides a temporary road structure, which is characterized in that a first anti-seepage film layer, a bentonite waterproof cushion layer and a roadbed body are sequentially paved on the road structure from bottom to top from an original anti-seepage film layer of a garbage pile body; the road base and the road surface are a hybrid structure including earth and crushed stone. The temporary road structure can effectively prevent the original anti-seepage film from being punctured so as to avoid the leakage of landfill gas and percolate in the garbage pile body and influence on the overall stability of the garbage pile body; meanwhile, the pavement is smooth, the capacity of vertical load transferred downwards from the pavement can be borne during the temporary road period, and the load is effectively diffused, so that the garbage pile body cannot sink or deform. The first impermeable film layer is a newly-arranged impermeable film on the original impermeable film layer, the first impermeable film layer can play a backup role for the original impermeable film, the original impermeable film is prevented from losing efficacy in the processes of temporary road construction and operation and influencing the overall stability of a garbage pile body below, meanwhile, the roadbed body of the invention is a mixed structure of soil and gravels, and a bentonite waterproof cushion layer is arranged between the roadbed body and the impermeable film layer to play an auxiliary protection role. On the other hand, the safety guarantee of the original anti-seepage membrane can be provided, the balance that accumulated water in the temporary road does not leak and percolate in the garbage pile body does not leak is ensured, and the influence on the overall stability of the garbage pile body and the hidden danger of environmental pollution are reduced to the minimum practically.

Furthermore, the first impermeable film layer is a structural member formed by splicing a plurality of impermeable films into a whole. Furthermore, two adjacent impermeable films are connected by adopting hot melting welding.

Further, the thickness of the first anti-seepage film layer is 1.0 mm-2 mm. The first anti-seepage film layer is an anti-seepage film newly arranged on the original anti-seepage film layer, the first anti-seepage film layer can play a backup role on the original anti-seepage film, and the reasonable thickness can prevent the original anti-seepage film from losing efficacy in the processes of temporary road construction and operation and influencing the overall stability of the garbage pile body below

Furthermore, the thickness of the bentonite waterproof cushion layer is more than or equal to 6 mm. The bentonite of the invention plays a role in bearing the upper part and the lower part, not only plays a role in protecting the anti-seepage film layer, but also is used for bearing the bearing pressure transmitted by the road matrix, the thickness is less than 6mm, the bearing capacity to the whole body is insufficient or the load diffusion force is insufficient, and the sinking or deformation of the garbage pile body can occur. Preferably, the thickness of the bentonite waterproof cushion layer is 6-8 mm.

Furthermore, the permeability coefficient of the bentonite waterproof cushion layer is less than or equal to 5 multiplied by 10^-9cm/s, tensile strength of more than or equal to 800N/10cm and peel strength of more than or equal to 65N/10 cm. The bentonite waterproof cushion layer not only plays a role in assisting in protecting the original impermeable membrane, but also has a certain waterproof performance and a load dispersing function.

Furthermore, the bentonite waterproof cushion layer is a structural member formed by splicing a plurality of bentonite waterproof cushion layers in the horizontal direction. Furthermore, two adjacent bentonite waterproof cushion layers are adhered by glue.

Furthermore, the side slopes on the two sides of the road base body along the extending direction of the road are in an inclined structure. The design of the italic structure can drain water efficiently.

Furthermore, a second anti-seepage film layer is laid on the two side slopes of the road base body along the extending direction of the road, the top of the second anti-seepage film layer is fixedly connected with the road surface, and the bottom of the second anti-seepage film layer is fixedly connected with the original anti-seepage film layer of the garbage pile body in a welding mode. The second anti-seepage film layer carries out integral sealing package on the temporary road structure, so that the temporary road side slope can be effectively prevented from being washed away by heavy rainfall, cracking and sludge pumping are caused, the integral stability of the temporary road structure is effectively guaranteed, and the potential environmental pollution hazard is reduced.

Further, the distance between the welding point at the bottom of the second impermeable membrane layer and the barrier is at least 1 m. The fixing mode can reserve a certain pulling and stretching space for the second anti-seepage film layer of the road, and prevent the second anti-seepage film layer from being pulled and damaged when being impacted by external force because the second anti-seepage film layer is too tightly attached to a temporary road side slope.

Furthermore, a plurality of sand bag assemblies are hung on the surface of the second anti-seepage film layer along the extending direction of the road. Furthermore, the distance between two adjacent sand bag assemblies is 1-2 m. Furthermore, the sandbag assembly comprises a plurality of sandbags which are connected at intervals. Further, the distance between two adjacent sandbags is 1-2 m. Furthermore, two adjacent sandbags are fixedly connected through a rope body.

Further, the sand bag is abutted against the second impermeable film layer. A plurality of sand bag can play the effect of fixed second prevention of seepage rete, and the later stage of being convenient for is dismantled.

Furthermore, slope toe platforms are arranged at the slope toe positions on the two sides of the road base body along the extending direction of the road.

Furthermore, a block is arranged on the side surface of the toe platform. Further, the barrier is a bagged structure body consisting of graded broken stones. The blocking can effectively prevent the temporary road from being internally accumulated and seeped to wash the anti-seepage structure on the garbage pile body, and the road toe platform is reinforced by back pressure.

Furthermore, in the blocking, the particle size of the crushed stone is not more than 5 cm.

Further, the thickness of the second impermeable film layer is 1 mm-2 mm.

Furthermore, the particle size of the broken stone in the roadbed and the pavement is 5 cm-15 cm. The impermeable membrane covered on the top of the garbage heap is a key protection object, broken stones with larger particle sizes are adopted, risks are likely to be caused to the impermeable membrane, risk effects caused by rough and irregular edges and corners on the surfaces of the broken stones with large particle sizes are amplified, the edges and corners are easy to scratch and pierce the geomembrane in the construction process, and the consequences are unreasonable; in addition, the broken stone with large particle size is easy to cause the overhead of a rolling wheel of the road roller in the construction process, so that the compaction of intermediate soil is not facilitated (the broken stone and the soil of a mud broken stone road are rolled together), and the hidden quality trouble is left. Preferably, the particle size of the crushed stone is 5 cm-10 cm.

Furthermore, in the roadbed and the pavement, the weight ratio of the broken stones to the soil is 1-1.5: 1.

Another object of the present invention is to provide a construction method of the above temporary road structure.

A construction method of a temporary road structure includes the following steps:

step 1, construction lofting is carried out according to the road plane trend, and the road construction range is marked.

And 2, paving a first anti-seepage film layer on the original anti-seepage film of the garbage pile body.

And 3, paving a bentonite waterproof cushion layer on the first impermeable film layer obtained in the step 2.

And 4, filling roadbed materials on the bentonite waterproof cushion layer obtained in the step 3 to form a road matrix, and constructing a road surface on the top surface of the road matrix to finish construction.

The temporary road has the advantages of simple structure, simple construction method, high economic rationality and good construction safety and environmental protection property under the special environment of the urban refuse landfill. After the temporary road is used, the temporary road is convenient to dismantle and restore to the original appearance of the refuse landfill reservoir area.

Further, in the step 4, the road matrix is filled in a layered filling and layered compacting mode. The layered filling and the layered compaction can increase the practicability and the stability of the roadbed.

Furthermore, the thickness of each layer of filling is less than or equal to 35 cm. The stability of the roadbed can be affected by the overlarge thickness. Preferably, the thickness of each layer of filling is 20 cm-35 cm.

Furthermore, the compactness of each layer is more than or equal to 90 percent.

Further, in the step 4, the road base material is mainly prepared by mixing crushed stone and soil. Further, the weight ratio of the crushed stone to the soil is 1-1.5: 1. Furthermore, the particle size of the crushed stone is 5-15 cm.

Further, step 4 is followed by a step 5: laying a layer of second anti-seepage film layer on the side slopes on the two sides of the roadbed body along the extending direction of the road, wherein one end of the second anti-seepage film layer is bent and then embedded below the road surface for anchoring, and the other end of the second anti-seepage film layer is welded and fixed with the original anti-seepage film.

Further, step 5 is followed by step 6: and installing a sand bag assembly at intervals of 1-2 m along the extending direction of the road at the outer side of the second anti-seepage film layer, wherein the distance between every two adjacent sand bags in each sand bag assembly is 1-2 m, and the sand bag assemblies are bound and fixed through nylon ropes.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the invention provides a temporary road structure, which is characterized in that a first impermeable membrane layer, a bentonite waterproof pad layer and a road matrix are sequentially paved from bottom to top from an original impermeable membrane layer of a garbage pile body; the road base and the road surface are a hybrid structure including earth and crushed stone. The temporary road structure can effectively prevent the anti-seepage film from being punctured so as to avoid the leakage of landfill gas and percolate in the garbage pile body and influence on the overall stability of the garbage pile body; meanwhile, the pavement is smooth, the capacity of vertical load transferred downwards from the pavement can be borne during the temporary road period, and the load is effectively diffused, so that the garbage pile body cannot sink or deform. The first impermeable membrane layer is a newly arranged impermeable membrane on the original impermeable membrane layer, the first impermeable membrane layer can play a backup role on the original impermeable membrane layer, the original impermeable membrane is prevented from losing efficacy in the processes of temporary road construction and operation and the influence on the overall stability of the garbage pile body below is prevented, meanwhile, the roadbed body of the invention is a mixed structure of soil and gravels, and a bentonite waterproof pad layer is arranged between the roadbed body and the impermeable membrane layer to play an auxiliary protection role. On the other hand, the safety guarantee of the original anti-seepage membrane can be provided, the balance that accumulated water in the temporary road does not leak and percolate in the garbage pile body does not leak is ensured, and the influence on the overall stability of the garbage pile body and the hidden danger of environmental pollution are reduced to the minimum practically.

2. According to the temporary road structure provided by the invention, the second anti-seepage film layer is arranged on the slopes on two sides of the roadbed body along the extending direction of the road, one end of the anti-seepage film layer is fixed with the road surface, the other end of the anti-seepage film layer is fixed with the original anti-seepage film layer, the temporary road structure is integrally and hermetically wrapped by the second anti-seepage film layer, the temporary road slope can be effectively prevented from being washed by strong rainfall, the phenomena of cracking and mud pumping are caused, the integral stability of the temporary road structure is effectively ensured, and the hidden danger of environmental pollution is reduced.

3. The temporary road structure provided by the invention has the advantages of simple structure, simple construction process, high economic rationality and good construction safety and environmental protection property under the special environment of the urban refuse landfill. After the temporary road is used, the temporary road is convenient to dismantle and restore to the original appearance of the refuse landfill reservoir area.

Drawings

Fig. 1 is a schematic view of a temporary road structure according to embodiment 1.

Fig. 2 is a schematic side slope view of the temporary road structure of the embodiment 1 along one side of the road extending direction.

Icon: 1-garbage dump; 2-original impermeable film layer; 3-a first barrier film layer; 4-a bentonite waterproof cushion layer; a 5-way substrate; 51-a second barrier film layer; 52-sandbag; 53-toe platform; 531-blocking; 6-road surface.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

After running and accumulating for more than twenty years, supporting facilities in a certain urban refuse landfill are seriously aged, particularly, the water passing section of the original flood discharge tunnel is insufficient, so that rainwater on an HDPE (high-density polyethylene) impermeable film (hereinafter referred to as an impermeable film) laid on the surface of a refuse pile in a refuse landfill reservoir area cannot be discharged in time when heavy rainfall occurs, and the rainwater is infiltrated into the refuse pile to cause the refuse pile to slide; meanwhile, a percolate pipeline is arranged in the original flood drainage tunnel and is subjected to rainwater washing for a long time, so that the pipeline is easy to damage, and the pipeline cannot be maintained in time during rainfall, so that the environment is polluted by rainwater and sewage mixed flow. In order to realize the distribution of rain and sewage and ensure the safety of the landfill reservoir area, a flood discharge tunnel needs to be newly built, and the tunnel is specially used for discharging rainwater in the landfill reservoir area.

Because newly-built flood discharge tunnel starting point is located landfill storehouse area south side mountain slope foot department, the existing temporary road in scene does not extend to tunnel construction area, for transporting required personnel, material, the equipment of site operation, need newly-built partial temporary road on rubbish heap body prevention of seepage membrane. The newly-built temporary road is about 110m long, the maximum width is 6m, and the maximum filling height is 3 m.

The newly-built temporary road is shown in fig. 1.

A temporary road structure is sequentially paved with a first anti-seepage film layer 3 with the thickness of 2mm, a bentonite waterproof cushion layer 4, a roadbed body 5 and a road surface 6 from bottom to top; the first anti-seepage film layer 3 is laid above the original anti-seepage film layer 2 of the garbage pile body 1; the roadbed 5 and the road surface 6 are a mixed structure including earth and crushed stone; the particle size of the broken stone is 10cm +/-1 cm.

The side slopes on two sides of the road matrix 5 along the extending direction of the road are in an inclined structure, and a second anti-seepage film layer 51 with the thickness of 2mm is paved on the side slopes; one end of the top of the second impermeable film layer 51 is fixedly connected with the road surface 6 through an anchor rod, and one end of the bottom of the second impermeable film layer 51 is fixedly connected with the original impermeable film 2 of the garbage pile body 1 in a welding mode.

As shown in fig. 2, a plurality of sand bag assemblies are hung on the surface of the second impermeable film layer 51 at intervals along the extending direction of the road. The distance between two adjacent sandbag assemblies is 2 m. The sandbag assembly includes a plurality of sandbags 52 connected at intervals. The distance between two adjacent sandbags 52 is 1 m. Two adjacent sandbags 52 are fixedly connected through a rope.

The sandbag 52 is abutted against the second barrier film layer 51.

Slope toe platforms 53 are connected to the slope toe positions on two sides of the road base body 5 in the extending direction of the road, a barrier 531 is arranged on the side face of each slope toe platform 53, and each barrier 531 is formed by stacking a structure body formed by a plurality of bagged graded broken stones. The grain size of the bagged graded broken stone is 3 cm.

The road structure is sequentially paved with a first impermeable membrane layer, a bentonite waterproof pad layer and a road matrix from bottom to top from the original impermeable membrane layer of the garbage pile body; the road base and the road surface are a hybrid structure including earth and crushed stone. The temporary road structure can effectively prevent the anti-seepage film from being punctured so as to avoid the leakage of landfill gas and percolate in the garbage pile body and influence on the overall stability of the garbage pile body; meanwhile, the pavement flatness is good, the pavement can bear the capability of vertical load transferred downwards during the temporary road period, and the load is effectively diffused, so that the garbage pile body cannot sink or deform.

Example 2

The construction method of the temporary road structure on the original impermeable membrane 2 of the garbage pile 1 in the embodiment 1 specifically comprises the following steps:

step A: construction lofting is carried out according to the planar trend of the road, and a dust spreading line is arranged on the original impermeable membrane 2 of the garbage pile body 1 to mark the construction range of the road.

And B: demolish the presser foot sand bag on original prevention of seepage membrane 2 surface on rubbish pile 1 in the construction scope, after demolising and accomplishing, lay a thick 2 mm's of a layer thickness first prevention of seepage rete 3 on the surface of original prevention of seepage membrane 2 newly, first prevention of seepage rete 2 is that polylith prevention of seepage membrane concatenation is in the same place, adopts the hot melt welded connection to connect into a whole between two adjacent prevention of seepage membranes, plays the backup effect to original prevention of seepage membrane, prevents that original prevention of seepage membrane from becoming invalid in the middle of temporary road construction, operation process, produces the influence to rubbish pile overall stability below.

And C: lay one deck bentonite waterproof backing layer 4 on the first prevention of seepage rete 3 that newly lay again on the surface, bentonite waterproof backing layer 4 is by the waterproof backing layer concatenation of polylith bentonite together, and two adjacent bentonite waterproof backing layers adopt special glue to adhere into a whole between one layer, play supplementary guard action to original prevention of seepage membrane and the prevention of seepage membrane of laying newly on its surface, further prevent that interim road construction or its inside ponding, infiltration from producing the influence to below rubbish heap body overall stability.

Step D: the newly laid bentonite waterproof cushion layer 4 is filled with a road matrix, the filled road matrix 5 adopts a mud-bonded gravel road bed (the mass ratio of 60 percent of gravel and 40 percent of soil are mixed, the particle size of the gravel is 10cm +/-1 cm), layered filling and layered compaction are carried out, the filling thickness of each layer is 20cm, and the compaction degree is more than 95 percent. When filling, the road is filled in layers to the height of 1m of the whole road, and then the road is respectively folded by 1m from filling sidelines at two sides of the road to the middle to be used as a toe platform 53.

Step E: and (3) continuously filling and compacting the roadbed 5 in layers from the inner side of the toe platform 53 according to the slope ratio of 1:1 until the top surface of the temporary road lane is level, wherein the top surface of the roadbed 5 is the road surface 6.

Step F: and a bagged graded broken stone barrier 531 is stacked outside the toe platform 53. The barrier 531 is 1m high and 1m wide, and bagged graded broken stones (the grain size of the broken stones is 3cm +/-1 cm) are stacked in a staggered mode from bottom to top according to the overlapping length of 20 cm. Prevent the temporary road from internally accumulating and seeping water to wash the anti-seepage structure on the garbage pile body, and carry out back pressure reinforcement on the road slope toe platform.

Step G: and laying a second anti-seepage film layer 51 with the thickness of 2mm on the side slopes on the two sides of the roadbed body 5. One end of the second impermeable film layer 51 is bent and then embedded below the road surface by 60cm for anchoring; the other end of the second impermeable film layer 51 is welded and fixed with the original impermeable film 2, and the distance between the welding point and the barrier 531 of the bagged graded macadam is 1.5 m. The fixing mode can reserve a certain pulling and stretching space for the second anti-seepage film layer 51, and prevent the second anti-seepage film layer from being pulled and damaged when being impacted by external force because the second anti-seepage film layer is too tightly attached to a temporary road side slope. And one fixing sandbag 52 is longitudinally arranged at intervals of 2m on the outer side of the second impermeable film layer 51, the distance between two adjacent sandbags 52 in each sandbag 52 is 1m, and the sandbags are bound and fixed through nylon ropes.

The temporary road structure provided by the invention has the advantages of simple structure, simple construction process, high economic rationality and good construction safety and environmental protection property under the special environment of the urban refuse landfill. After the temporary road is used, the temporary road is convenient to dismantle and restore to the original appearance of the refuse landfill reservoir area.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A temporary road structure is characterized in that a first anti-seepage film layer (3), a bentonite waterproof cushion layer (4) and a roadbed body (5) are sequentially paved from bottom to top;

the first anti-seepage film layer (3) is laid above the original anti-seepage film layer (2) of the garbage pile body (1);

the top end of the road base body (5) is provided with a road surface (6);

the road base (5) and the road surface (6) are of a mixed structure comprising earth and crushed stone.

2. Temporary road structure according to claim 1, characterised in that said first impermeable film layer (3) has a thickness comprised between 1.0mm and 2 mm.

3. Temporary road structure according to claim 1, characterised in that the thickness of the bentonite waterproofing backing (4) is greater than or equal to 6 mm.

4. Temporary road structure according to claim 1, characterised in that the bentonite waterproofing backing (4) has a permeability coefficient of ≤ 5 × 10^-9cm/s, tensile strength of more than or equal to 800N/10cm and peel strength of more than or equal to 65N/10 cm.

5. Temporary road structure according to claim 1, characterized in that the crushed stones in the roadbed and the pavement (6) have a grain size of 5-15 cm.

6. A temporary road structure according to claim 1, characterised in that the weight ratio of said crushed stones to said soil is 1-1.5: 1.

7. The temporary road structure according to any one of claims 1 to 6, wherein a second anti-seepage film layer (51) is laid on the road base body (5) along the slopes on two sides of the road in the extending direction, the top of the second anti-seepage film layer (51) is fixedly connected with the road surface (6), and the bottom of the second anti-seepage film layer (51) is fixedly connected with the original anti-seepage film (2) layer of the garbage stack body (1) in a welding mode.

8. A construction method of a temporary road structure according to any one of claims 1 to 7, comprising the steps of:

step 1, performing construction lofting according to the road plane trend, and marking the road construction range;

step 2, paving a first anti-seepage film layer (3) on the original anti-seepage film (2) of the garbage pile body (1);

3, paving a bentonite waterproof cushion layer (4) on the first impermeable film layer (3) in the step 2;

and 4, filling a road matrix (5) material on the bentonite waterproof cushion layer (4) in the step 3 to form a road matrix (5), and constructing a road surface (6) on the top surface of the road matrix (5) to finish construction.

9. The construction method of a temporary road structure according to claim 8, wherein in the step 4, the road base (5) is filled by means of layered filling and layered compaction.

10. A construction method of a temporary road structure according to claim 9, wherein the thickness of each layer of filling is not more than 35cm, and the degree of compaction of each layer is not less than 90%.