CN110387781A - A kind of Flying Area in Airport road face " pot cover effect " causes the control method of disaster - Google Patents
A kind of Flying Area in Airport road face " pot cover effect " causes the control method of disaster Download PDFInfo
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- CN110387781A CN110387781A CN201910481167.7A CN201910481167A CN110387781A CN 110387781 A CN110387781 A CN 110387781A CN 201910481167 A CN201910481167 A CN 201910481167A CN 110387781 A CN110387781 A CN 110387781A
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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
- E01C11/00—Details of pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
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Abstract
The invention discloses the control methods that a kind of Flying Area in Airport road face " pot cover effect " causes disaster, this method includes judging Flying Area in Airport engineering for newly-built road face engineering or existing road face improvement project, then newly-built road face engineering is divided into engineering place and is in abundance of water area and two kinds of non-abundance of water area situation, it is two kinds of situations of impermeable material and seepy material that existing road face improvement project, which is divided into the face Yuan Dao structured base layer, corresponding control method is proposed respectively for above-mentioned four kinds of situations, the present invention is a set of for the newly-built road face engineering in Flying Area in Airport by establishing, existing road face improvement project dredges face structure sheaf backwater scheme, it provides a kind of convenient for construction, drainage effect is good and does not influence the control method that the Flying Area in Airport road face " pot cover effect " of movement area normal operation causes disaster.
Description
Technical field
The present invention relates to technical field of civil engineering more particularly to a kind of Flying Area in Airport road face " pot cover effect " to cause calamity
Harmful control method.
Background technique
Airfield pavement " pot cover effect " refers to that closed road face hinders the evaporative effect of its underpart moisture, causes face lower part water
Dividing can not be discharged, constantly gather, and eventually lead to the phenomenon that face lower part soil moisture content greatly improves.Road face in Flying Area in Airport is
It is spliced by fluid-tight pavement slab, plate seam is filled using waterproof material, this large area ventilative, water penetration is very poor
Road noodles are similar to " pot cover ", can block the water_air exchange below between the shallow-layer soil body and the external world, hinder draining and evaporation effect
It answers, when there is moisture constantly to feed into the shallow-layer soil body, then can constantly gather moisture in shallow soil body, soil moisture content can be substantially
It increases, is even up to saturated, it is high to ultimately form the lower part level of ground water Chu He Dao Mian water content of soil, and intermediate soil moisture in layer
Relatively low state.
" pot cover effect " is the synthesis result that water-heat in unsaturated soil body-vapour simultaneous transport generates.According to unsaturated soil water
Gas transition process and inherent mechanism, " pot cover effect " are broadly divided into two types: the first kind is the condensation of unsaturated soil aqueous vapor
Process, the second class are that unsaturation frozen soil aqueous vapor is migrated into ice process.The principal element for influencing " pot cover effect " includes: soil property class
Type, initial aqueous rate, level of ground water, rainfall, temperature field, meteorological condition etc..
Airfield pavement " pot cover effect " easily induces road face disease, influences the normal service on airport.Caused by " pot cover effect "
Airfield pavement lower part water content of soil is sharply increased, and can cause the reduction of base soil bearing capacity when serious, sedimentation and deformation increases, road face
The engineering project disasters such as differential settlement or even road face structure crack.In addition, large area is gathered under impermeable air flue face in cold district
Moisture freeze, volume expands, when temperature increase after, volume melts contracting, such Frozen-thawed cycled, it will cause face change
Shape, cracking and destruction constitute a serious threat safely to the landing of aircraft.
Currently, existing prevention and treatment " pot cover effect " causes the method for disaster to be using novel road based structures, i.e., slightly below
Hydrophobic vapour barrier (37 lime earth layer and sandy gravel stratum) is laid at condensation vapor boundary line position, and blind in the setting of sandy gravel stratum two sides
Ditch, to achieve the purpose that prevent base air in soil state water in deep layer road to migrate upwards, dredge roadbed top ponding.This novel road base
Structure using every, dredge combine by the way of prevent and treat " pot cover effect " cause calamity, this method on the one hand can with trapping, make deep layer vaporous water without
Method rises to condensation vapor line of demarcation, will not occur to condense or freeze and ponding；On the other hand can be hydrophobic, dredge the top soil body
In ponding, and then effectively prevent engineering project disaster caused by face " pot cover effect ".However, there are some tired for the implementation of this method
Difficulty creates face engineering for airport, and the position for being laid with hydrophobic vapour barrier is difficult to determine, this will will affect " pot cover effect " prevention and treatment
Effect；Road face existing for airport improvement project, changes original road based structures, then project amount is huge, influences movement area operation.Cause
This, to reduce airfield pavement " pot cover effect " bring disaster and loss, it is necessary to which research is easy to construction, significant effect and can protect
Demonstrate,prove the control method of movement area normal operation.
Summary of the invention
The purpose of the present invention is to provide the control methods that a kind of Flying Area in Airport road face " pot cover effect " causes disaster, should
Method by establish it is a set of for Flying Area in Airport create road face engineering, existing road face improvement project to dredge face structure sheaf stagnant
Water scheme, provide it is a kind of convenient for construction, drainage effect is good and does not influence the Flying Area in Airport road face " pot of movement area normal operation
Lid effect " causes the control method of disaster.
To achieve the above object, the invention provides the following technical scheme:
A kind of Flying Area in Airport road face " pot cover effect " causes the control method of disaster, it is characterised in that the control method packet
Include following steps:
S1, judge Flying Area in Airport engineering for newly-built road face engineering or existing road face improvement project；
S2, if newly-built road face engineering, then judge that engineering place is in non-abundance of water area or abundance of water area；Change if existing road face
Engineering is made, then judges the face Yuan Dao structured base layer for impermeable material or seepy material；
If S3, newly-built road face engineering place are in non-abundance of water area, execute: in road the impermeable water-base of shoulder divide into set it is permeable broken
Rock layers, permeable metalling bottom laying blind pipe (structure section is referring to fig. 2) are dredged in the structure sheaf of face with forming pipelined channel
Portion's backwater leads to backwater in the open drain of movement area, the face permeable metalling Ying Yudao Portland Cement Concrete Surface Course, waterproof
Base connects；
If newly-built road face engineering place is in abundance of water area, execute: the upper base using porous base course as road face structure sheaf
Layer, in road, the impermeable water-base of shoulder, which is divided into, sets permeable metalling, and permeable metalling bottom is laid with blind pipe (structure section is referring to Fig. 3),
To form pipelined channel, backwater inside the structure sheaf of face is dredged, backwater is led in the open drain of movement area, the permeable rubble
The road Ceng Yingyu face Portland Cement Concrete Surface Course, porous base course, impermeable water-base connect；
If existing road face improvement project Central Plains road face structured base layer is impermeable material, execute: in road shoulder grinding coagulation
The permeable rubble french drain of the lower setting access road shoulder of soil, it is logical to form flowing water that (structure section is referring to fig. 4) is connected with road face structure sheaf
Backwater inside the structure sheaf of face is dredged in road；The permeable face the rubble french drain Ying Yudao original Portland Cement Concrete Surface Course, impermeable water-base
Connect；
If existing road face improvement project Central Plains road face structured base layer is seepy material, execute: in Tu Mianqu element backfill
It is lower that the permeable rubble french drain for not accessing shoulder is set, connect with road shoulder structure sheaf, (structure section is referring to Fig. 5) is logical to form flowing water
Backwater inside the structure sheaf of face is dredged in road；
The permeable rubble french drain Ying Yudao shoulder original Portland Cement Concrete Surface Course, porous base course, impermeable water-base connect.
As a further solution of the present invention: permeable metalling top surface described in the engineering of face is created for Flying Area in Airport
It should be higher than that face Portland Cement Concrete Surface Course bottom surface；Permeable metalling bottom surface should be lower than the impermeable water-base bottom surface in road face, and permeable broken
The distance between rock layers bottom surface and the impermeable water-base bottom surface in road face are not less than 20cm, and permeable metalling bottom surface is laid with blind pipe.It is described
Permeable metalling width should be greater than its waterproof base width in top, and be not less than 50cm beyond partial-length.
Further, the permeable rubble layer material is 3~7cm of partial size rubble.
As a further solution of the present invention: the Flying Area in Airport in abundance of water area is created in the engineering of road face in place
In the case that annual precipitation is big or level of ground water is high, the porous base course thickness can be increased.
As a further solution of the present invention: in the existing road face improvement project in Flying Area in Airport, if former road
Face structured base layer is impermeable material, then the permeable rubble french drain top surface should be higher than that face raw water mud
Concrete topping bottom surface；Permeable rubble french drain bottom surface should be lower than the waterproof substrate top surface in road face, the two
Spacing is not less than 20cm；If the face Yuan Dao structured base layer is equipped with seepy material, permeable rubble french drain top
Face should be higher than that shoulder original Portland Cement Concrete Surface Course bottom surface, permeable rubble french drain bottom surface should be saturating lower than road shoulder
Water-base bottom surface, the two spacing are not less than 20cm.
As a further solution of the present invention: the permeable rubble french drain is laid with along vertical runway direction, spacing 60m.
As a further solution of the present invention: the permeable rubble french drain sectional dimension 50cm × 50cm；It is described permeable broken
Stone french drain material is 3~7cm of partial size rubble.
Further, the permeable rubble french drain uses 250g/m2Permeable geotextiles package.
Compared with prior art, the beneficial effects of the present invention are: it is a set of for the newly-built road face in Flying Area in Airport by establishing
Engineering, existing road face improvement project dredge face structure sheaf backwater scheme, provide it is a kind of convenient for construction, drainage effect it is good and not
The Flying Area in Airport road face " pot cover effect " for influencing movement area normal operation causes the control method of disaster, it is possible to reduce airport road
Face " pot cover effect " bring disaster and loss.Face engineering and existing road face improvement project are created for Flying Area in Airport, is dredged
The embodiment of conduit face structure sheaf backwater is slightly different.Face engineering is created for Flying Area in Airport, structure sheaf is set in road face
Timing consideration, which is dredged face structure sheaf backwater problem and given, to be solved, and both convenient for construction, drainage effect was good again, and did not influenced also
Movement area grading.Road face existing for Flying Area in Airport improvement project dredges face in conjunction with the design of original road face structure
Structure sheaf backwater structure, both convenient for construction, drainage effect was good again, and did not influenced movement area normal operation, do not influence movement area
Grading.By the control method, it can effectively alleviate Flying Area in Airport road face " pot cover effect ", and the control method relates to
And constructing structure it is simple, difficulty of construction is small, construction efficiency is good, guarantee movement area grading on the basis of, prevention and treatment " pot
Disaster caused by lid effect ".
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Attached drawing 1 is the functional block diagram of this control method；
Attached drawing 2 is the topology layout figure for creating road face engineering place in this control method and being in non-abundance of water area；
Attached drawing 3 is the topology layout figure for creating road face engineering place in this control method and being in abundance of water area；
Attached drawing 4 is the structure cloth that the face existing road face improvement project Yuan Dao structured base layer is impermeable material in this control method
Office's figure；
Attached drawing 5 is the topology layout that the face existing road face improvement project Yuan Dao structured base layer is seepy material in this control method
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of Flying Area in Airport road face " pot cover effect " dredged based on the structure sheaf backwater of face is present embodiments provided to draw
The control method of disaster is played, the control method includes the following contents:
As shown in Fig. 2, Dao Mianqu is from top to bottom followed successively by Portland Cement Concrete Surface Course 301, geotextiles 304, waterproof
Base 302, impermeable water-base 302, the area Dao Jian be from top to bottom followed successively by Portland Cement Concrete Surface Course 301, impermeable water-base 302, thoroughly
Water metalling 303；As shown in Fig. 3, Dao Mianqu be from top to bottom followed successively by Portland Cement Concrete Surface Course 301, geotextiles 304, thoroughly
Water-base 305, impermeable water-base 302, the area Dao Jian be from top to bottom followed successively by Portland Cement Concrete Surface Course 301, impermeable water-base 302,
Permeable metalling 303；As shown in Fig. 4, Dao Mianqu is from top to bottom followed successively by asphalt surface course 402, raw water mud after transformation restores
Concrete topping 403, impermeable water-base 302, the area Dao Jian are from top to bottom followed successively by asphalt concrete pavement 401, grinding coagulation soil
404, permeable geotextiles 405, permeable rubble french drain 406, permeable geotextiles 405；As shown in Fig. 5, the area Dao Jian is from top to bottom
It is followed successively by asphalt surface course 402 after transformation restores, former Portland Cement Concrete Surface Course 403, porous base course 305, impermeable water-base 302, soil
Face area is from top to bottom followed successively by plain backfill 407, permeable geotextiles 405, permeable rubble french drain 406, permeable geotextiles 405.
In the embodiment of the present invention, a kind of Flying Area in Airport road face " pot cover effect " causes the control method of disaster, including such as
Lower step:
S1, Flying Area in Airport engineering is judged for newly-built road face engineering or existing road face improvement project, referring to Fig. 1；
S2, if newly-built road face engineering, then judge that engineering place is in non-abundance of water area or abundance of water area；Change if existing road face
Engineering is made, then judges the face Yuan Dao structured base layer for impermeable material or seepy material；
If S3, newly-built road face engineering place are in non-abundance of water area, execute: being arranged under the impermeable water-base 302 of road shoulder saturating
Water metalling 303, permeable 303 bottom of metalling are laid with blind pipe 309, permeable 303 face the Ying Yudao cement concrete of metalling
Surface layer 301, impermeable water-base 302 connect；
If newly-built road face engineering place is in abundance of water area, execute: using porous base course 305, (pervious concrete is permeable
Asphalt macadam) upper base as road face structure sheaf, permeable metalling 303 is set under the impermeable water-base 302 of road shoulder, it is permeable broken
303 bottom of rock layers is laid with blind pipe 309 (structure section is referring to Fig. 3), to form pipelined channel, dredges stagnant inside the structure sheaf of face
Water leads to backwater in the open drain of movement area；It is 303 face the Ying Yudao Portland Cement Concrete Surface Course 301 of permeable metalling, permeable
Base 305, impermeable water-base 302 connect；
In above-mentioned steps, permeable 303 top surface of metalling should be higher than that 301 bottom surface of face Portland Cement Concrete Surface Course；Permeable rubble
303 bottom surface of layer should be lower than impermeable 302 bottom surface of water-base in road face, and the two spacing answers a not less than 20cm；Permeable metalling bottom surface is laid with
Blind pipe.303 width of permeable metalling should be greater than its waterproof 302 width of base in top, and exceed partial-length b Ying Bu little
In 50cm；303 material of permeable metalling is 3~7cm of partial size rubble；
In engineering place, annual precipitation is big or in the case that level of ground water is high, and it is thick can suitably to increase the porous base course 305
Degree；
If existing road face improvement project Central Plains road face structured base layer is impermeable material, execute: in road shoulder grinding coagulation
The permeable rubble french drain 406 (structure section is referring to fig. 4) of the lower setting access road shoulder of soil 404, connects with road face structure sheaf, to be formed
Pipelined channel dredges backwater inside the structure sheaf of face；406 face the Ying Yudao original Portland Cement Concrete Surface Course of permeable rubble french drain
403, impermeable water-base 302 connects.
If existing road face improvement project Central Plains road face structured base layer is seepy material, execute: in Tu Mianqu element backfill
407 lower settings do not access the permeable rubble french drain 406 of shoulder, connect with road shoulder structure sheaf, to form pipelined channel, dredge face
Backwater inside structure sheaf；
The 406 Ying Yudao shoulder original Portland Cement Concrete Surface Course 403 of permeable rubble french drain, porous base course 305, impermeable water-base
302 connect.
In the improvement project of road face existing for Flying Area in Airport, if the face Yuan Dao structured base layer is impermeable material, permeable
406 top surface of rubble french drain should be higher than that 403 bottom surface of face original Portland Cement Concrete Surface Course；Permeable 406 bottom surface of rubble french drain should be lower than road
Impermeable 302 top surface of water-base in face, the two spacing e should be not less than 20cm；If the face Yuan Dao structured base layer is seepy material, permeable rubble
406 top surface of french drain is higher than 403 bottom surface of road shoulder original Portland Cement Concrete Surface Course, and permeable 406 bottom surface of rubble french drain is lower than the permeable base of road shoulder
305 bottom surface of layer, the two spacing are not less than 20cm.The permeable rubble french drain 406 is laid with along vertical runway direction, spacing 60m；Institute
Stating permeable 406 sectional dimension d of rubble french drain is 50cm × 50cm；Permeable 406 material of rubble french drain is that 3~7cm of partial size is broken
Stone, the permeable rubble french drain 406 use 250g/m2Permeable geotextiles 405 are wrapped up.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
- The control method that a kind of Flying Area in Airport road face 1. " pot cover effect " causes disaster, it is characterised in that the control method includes Following steps:S1, judge Flying Area in Airport engineering for newly-built road face engineering or existing road face improvement project；S2, if newly-built road face engineering, then judge that engineering place is in non-abundance of water area or abundance of water area；Work is transformed if existing road face Journey then judges the face Yuan Dao structured base layer for impermeable material or seepy material；If S3, newly-built road face engineering place are in non-abundance of water area, execute: in road, the impermeable water-base of shoulder, which is divided into, sets permeable rubble Layer, permeable metalling bottom are laid with blind pipe, the face permeable metalling Ying Yudao Portland Cement Concrete Surface Course, impermeable water-base phase It connects；If newly-built road face engineering place is in abundance of water area, execute: the upper base using porous base course as road face structure sheaf, In Shoulder impermeable water-base in road, which is divided into, sets permeable metalling, and permeable metalling bottom is laid with blind pipe, the face permeable metalling Ying Yudao Portland Cement Concrete Surface Course, porous base course, impermeable water-base connect；If existing road face improvement project Central Plains road face structured base layer is impermeable material, execute: under road shoulder grinding coagulation soil The permeable rubble french drain of access road shoulder is set, connects with road face structure sheaf, to form pipelined channel, dredges inside the structure sheaf of face Backwater；The permeable face the rubble french drain Ying Yudao original Portland Cement Concrete Surface Course, impermeable water-base connect；If existing road face improvement project Central Plains road face structured base layer is seepy material, executes: being divided into Tu Mianqu element backfill The permeable rubble french drain for not accessing shoulder is set, is connected with road shoulder structure sheaf, to form pipelined channel, is dredged inside the structure sheaf of face Backwater；The permeable rubble french drain Ying Yudao shoulder original Portland Cement Concrete Surface Course, porous base course, impermeable water-base connect.
- 2. Flying Area in Airport road according to claim 1 face " pot cover effect " causes the control method of disaster, feature exists In: creating permeable metalling top surface described in the engineering of face for Flying Area in Airport should be higher than that face Portland Cement Concrete Surface Course bottom Face；Permeable metalling bottom surface should be lower than the impermeable water-base bottom surface in road face, and permeable metalling bottom surface and the impermeable water-base bottom in road face The distance between face is not less than 20cm, and permeable metalling bottom surface is laid with blind pipe.
- 3. Flying Area in Airport road according to claim 2 face " pot cover effect " causes the control method of disaster, feature exists In: the permeable metalling width waterproof base width square thereon greatly, and it is not less than 50cm beyond partial-length.
- The prevention and treatment side that Flying Area in Airport road according to any one of claim 1-3 face 4. " pot cover effect " causes disaster Method, it is characterised in that: the permeable rubble layer material is 3~7cm of partial size rubble.
- 5. Flying Area in Airport road according to claim 1 face " pot cover effect " causes the control method of disaster, feature exists In: the Flying Area in Airport in abundance of water area is created big or in the case of level of ground water is high in place annual precipitation in the engineering of road face Under, the porous base course thickness can be increased.
- 6. Flying Area in Airport road according to claim 1 face " pot cover effect " causes the control method of disaster, feature exists In: in the existing road face improvement project in Flying Area in Airport, if the face Yuan Dao structured base layer is impermeable material, described permeable broken Stone french drain top surface is higher than road face original Portland Cement Concrete Surface Course bottom surface；Permeable rubble french drain bottom surface is lower than the impermeable water-base top in road face Face, the two spacing are not less than 20cm；If the face Yuan Dao structured base layer is equipped with seepy material, permeable rubble french drain top surface is higher than road shoulder Former Portland Cement Concrete Surface Course bottom surface, permeable rubble french drain bottom surface are lower than road shoulder porous base course bottom surface, and the two spacing is not less than 20cm.
- 7. Flying Area in Airport road according to claim 6 face " pot cover effect " causes the control method of disaster, feature exists In: the permeable rubble french drain is laid with along vertical runway direction, spacing 60m.
- 8. Flying Area in Airport road according to claim 6 or 7 face " pot cover effect " causes the control method of disaster, feature It is: the permeable rubble french drain sectional dimension 50cm × 50cm；The permeable rubble french drain material is 3~7cm of partial size rubble.
- 9. Flying Area in Airport road according to claim 6 or 7 face " pot cover effect " causes the control method of disaster, feature It is, the permeable rubble french drain uses 250g/m2Permeable geotextiles package.
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| CN201910481167.7A CN110387781B (en) | 2019-06-04 | 2019-06-04 | Method for preventing and treating disasters caused by 'pot cover effect' of airport flying pavement |
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| CN107988867A (en) * | 2017-12-30 | 2018-05-04 | 南京理工大学泰州科技学院 | A kind of novel water permeable road and its construction method |
| CN109322225A (en) * | 2018-10-24 | 2019-02-12 | 山东省交通科学研究院 | A kind of multi-layer recycled functional layer drainage crack resistance type asphalt pavement maintenance structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104452518A (en) * | 2014-12-05 | 2015-03-25 | 中交第一公路勘察设计研究院有限公司 | Earth shoulder blind ditch system for pavement edge centralized drainage |
| CN204530365U (en) * | 2015-03-24 | 2015-08-05 | 扬州大学 | There is the permeable road structure of curb |
| CN105064158A (en) * | 2015-07-08 | 2015-11-18 | 北京航空航天大学 | Prevention method for disasters caused by "pot effect" of airport runway |
| NL1042081B1 (en) * | 2015-10-08 | 2017-05-01 | Spekpannekoek B V | Rainwater treatment system |
| CN107988867A (en) * | 2017-12-30 | 2018-05-04 | 南京理工大学泰州科技学院 | A kind of novel water permeable road and its construction method |
| CN109322225A (en) * | 2018-10-24 | 2019-02-12 | 山东省交通科学研究院 | A kind of multi-layer recycled functional layer drainage crack resistance type asphalt pavement maintenance structure |
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|---|---|
| CN110387781B (en) | 2021-10-22 |
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