CN102140771A - Construction method for processing saline soil roadbed by separation layer - Google Patents
Construction method for processing saline soil roadbed by separation layer Download PDFInfo
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- CN102140771A CN102140771A CN 201110029316 CN201110029316A CN102140771A CN 102140771 A CN102140771 A CN 102140771A CN 201110029316 CN201110029316 CN 201110029316 CN 201110029316 A CN201110029316 A CN 201110029316A CN 102140771 A CN102140771 A CN 102140771A
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Abstract
The invention relates to a construction method for processing a saline soil roadbed by a separation layer, comprising the following steps: the separation layer is arranged in a mode that compound geomembranes cover a gravel soil separation layer; the compound geomembranes are laid according to the width of the cross section of the roadbed; firstly, an inner compound geomembrane is laid; then an outer compound geomembrane is laid; the compound geomembranes are flatly laid and tightly adhered to the surface of the roadbed; the gravel soil separation layer is laid on the compound geomembranes and is filled and laminated by layers; the compound geomembranes cover the gravel soil separation layer; gravel soil is filled between the separation layer and the original roadbed surface layer; and the degree of compaction of the top layer is above 97%. According to the construction method disclosed by the invention, the saline soil can be effectively prevented from carrying out salt expansion, corroding and the like on the roadbed, a road surface structure layer can be prevented from damaging, the construction is convenient, the cost of engineering construction can be lowered, the curing cost is reduced, and the stability and the service life of the roadbed can be improved. The practice proves that the scheme brings a better technical effect in the saline soil roadbed construction.
Description
Technical field
The present invention relates to a kind of roadbed construction method, particularly relate to a kind of job practices of handling the salinized soil roadbed with insulating course.
Background technology
Salinized soil is in the soil layer salination process, and brackish water moves the product that reaches harm roadbed and works with underground water transport.In highway engineering, be meant mainly in 1 meter thickness of surface soil layer that soluble salt content surpasses 0.3% saliferous soil layer.Since the existence of lyotropic salt in the soil body, the different basic engineering character that can change the soil body of salt kind with the content of salt.The harm of salinized soil mainly contains two kinds: salt expands and the salt corrosion.Wherein highway salt abdominal distension evil is more serious, makes highway pavement every year all with the destruction that produces season in various degree, causes very big economic loss.
Salinized soil comprises the following aspects to the main harm of roadbed: (1) leaching and saturated yielding since the rainfall of low mineralization or current water with the lyotropic salt dissolution of crystals of crystallization in the soil matrix, solid volume reduces in the soil body, void ratio increases, thereby forms soil matrix local rain rill, cave, depression or disease such as cave under deadweight, flowing water or external load effect; (2) frost boiling descends full water of soil matrix and supporting capacity owing to the poly-ice of contained lyotropic salt crystal in the salinized soil, dehydration and moisture absorption humidify.Outer load acts on down repeatedly and forms frost boiling, makes road surface be full of cracks destruction, muddy, wet and slippery, influences vehicle and normally runs, and sees so that the chlorine saline soil area comparatively more; (3) salt this class disease that expands mainly is owing to the local injustice in the road surface that the salinity crystallographic expansion in the salinized soil causes, heave, ftracture, also can change loose, the porous that causes roadbed side slope and curb top layer under the bloated effect repeatedly of caused salt in diurnal temperature, cause road to subject to wind erosion, be easy to fall into car, salt expands and mainly occurs in the sulfuric acid salinized soil; (4) corroding this class disease mainly is metal material, the nonmetals manufactured goods generation chemical reaction that uses owing in contained lyotropic salt in the salinized soil and the highway construction, causes the performance generation cracking of these materials or manufactured goods, the destruction that finally causes road.Show as corrosion of steel bar, concrete or the clay manufactured goods efflorescence of this class disease in highway construction ftractureed, and road surface structare layer is damaged.
When saline soil area is built highway, ground often has periodic water-soaked down, because of groundwater table higher, improving roadbed simply can influence the designing requirement of whole highway, can be chosen in the way that the capillary water insulating course is set in the subgrade soil this moment, with the salination once more that prevents subgrade soil with freeze highway distress such as phase frost boiling, keep the firm and stable of roadbed, the assurance highway is unimpeded.In subgrade cross section design, rationally determine capillary water insulating course position and thickness, the success or failure of whole design there is very important effect.
Summary of the invention
The problem to be solved in the present invention is: a kind of job practices with insulating course processing salinized soil roadbed is provided, and this method can effectively prevent the infringement of salinized soil to roadbed, easy construction, and construction costs is low.
Technical scheme of the present invention:
A kind of job practices of handling the salinized soil roadbed with insulating course, road structure comprises asphalt surface course, and the cement Stability Gravel layer is or/and the prototype gradation sandy gravel stratum, insulating course and former road bed layer, described insulating course adopts composite geo-membrane to coat the form setting of gravelly soil insulating course, and its construction sequence is:
(1) remove former supercrust ground surface soil earlier, grinding compacting, degree of compaction makes road bed smooth more than 90%;
(2) press the subgrade cross section width and lay composite geo-membrane, lay inboard composite geo-membrane earlier, lay outside composite geo-membrane then, composite geo-membrane should be laid open and flat and be close to road bed, adjacent two width of cloth lap width 〉=20cm during laying;
(3) at composite geo-membrane upper berth gravelly soil insulating course, and placement in layers rolls;
(4) with composite geo-membrane the gravelly soil insulating course is coated, adopt gravelly soil to fill between insulating course and the former road bed layer, top layer degree of compaction is more than 97%.
Described composite geo-membrane adopts two-layer nonwoven, centre to add one deck polyvinyl chloride or polyethylene sheeting structure, requires composite geo-membrane thickness 〉=0.3mm, permeability 〉=0.6MPa, breaking strength 〉=10kN/m, tearing strength 〉=0.32kN, elongation at break 〉=50%.
Described gravelly soil insulating course comprises upper strata coarse sand class loaded filter, gravel insulating course and lower floor's coarse sand class loaded filter, and construction sequence is:
(11) lay lower floor's coarse sand class loaded filter earlier, thickness 10cm, degree of compaction is more than 96%; Press design thickness and lay the bound edge gravel soil, making of holostrome, crown slope 〉=2%, it is smooth to pave, and manually cooperates levelling ground;
(12) lay the gravel insulating course, thickness is 40cm, and degree of compaction is more than 96%; Carry out layered rolling, earlier with crawler dozer voltage stabilizing 1-2 time, roll with the above vibratory roller of 12t again during compacting;
(13) lay upper strata coarse sand class loaded filter, thickness 10cm, degree of compaction is filled filler more than 96% after the compacting.
Contain cement 4 ~ 6% in the described cement Stability Gravel layer, all the other are sand gravel, and cement is selected Portland cement for use No. 32.5, and this layer thickness is 15-20cm; The sand gravel maximum particle diameter is 5cm in the prototype gradation sandy gravel stratum, contains soil amount＜10%.
Positive beneficial effect of the present invention:
1. salinized soil roadbed construction method of the present invention, characteristics according to the salinized soil roadbed adopt composite geo-membrane to coat the gravelly soil insulating course, and the form that adopts the coarse sand loaded filter to coat the gravelly soil insulating course is carried out subgrade construction, choose reasonable insulating course material and structure, can effectively prevent salinized soil to the salt of roadbed expand, infringement such as corrosion, avoid road surface structare layer to damage.
2. method of the present invention adopts composite geo-membrane (two cloth, one film) to coat gravelly soil and forms insulating course, wherein composite earthwork film-strength and elongation rate are higher, performances such as anti-aging, anticorrosion are arranged, construction quality is easy to control, good seepage-proof property, construction effect is better than the polyethylene antiseepage film, and the insulating course result of use of formation is better.
3. method easy construction of the present invention can reduce construction costs, reduces maintenance costs, stability and the application life that can improve roadbed.Technical scheme of the present invention proves that this scheme has better technical effect at national highway 217 line Burqins in the salinized soil subgrade construction to Kelamayi section road event and the Bu Kesaier practice in to the ironworks ditch to Tuoli section road event.
Description of drawings
Fig. 1: gravelly soil insulating course schematic diagram,
1 is upper strata coarse sand class loaded filter among the figure, and 2 is the gravel insulating course, and 3 is lower floor's coarse sand class loaded filter.
The specific embodiment
Embodiment 1: to the section road event of Kelamayi, highway sections such as K227+200～K227+655, K227+747～K229+450, K315+800～K317+000 are the salinized soil highway section at national highway 217 line Burqins; K228+600～K229+450 section is strong sulfurous acid salt marsh soil, and total salinity is 3.59%～4.88%, and top layer 1m is that weak salt expands-the bloated soil of strong salt groundwater level depth 0.5～1.5m; K315+800～K317+000 section be in (Asia) sulfuric acid salinized soil, total salinity is 0.76%～0.86%, top layer 0.25m is that weak salt expands-the strong salt soil that expands, groundwater level depth is 1～3m; K227+200～K227+655, K227+747～K228+600 section is weak salinized soil.
Treatment measures: remove widening of subgrade part top layer salinized soil (removing the situation of thickness), change and fill out gravelly soil, and composite geo-membrane coating gravelly soil insulating course is set according to salinized soil.
This section road structure layer comprises: the thick particulate formula of 3cm bituminous concrete, the thick middle grain formula bituminous concrete of 4cm, 20cm solid cement are stablized sandy gravel stratum, the thick prototype gradation sandy gravel stratum of 30cm, composite geo-membrane coating insulating course and former road bed layer.Contain cement 4 ~ 6% in the cement Stability Gravel layer, cement is selected Portland cement for use No. 32.5, and all the other are sand gravel; The sand gravel maximum particle diameter is 5cm in the prototype gradation gravel, contains soil amount＜10%.
Its construction sequence is as follows:
1. remove the ground surface soil of former supercrust, grinding compacting, degree of compaction reaches 90%, makes road bed smooth.
2. press the subgrade cross section width and lay composite geo-membrane, lay inboard composite geo-membrane earlier, lay outside composite geo-membrane then, composite geo-membrane should be laid open and flat and be close to road bed, during laying between adjacent two width of cloth lap width be not less than 20cm.Should check after making is finished to have or not breakage, overlay in the above when breakage is arranged and to prevent that the geomembrane that leaks from adding benefit.Composite geo-membrane is forbidden pedestrian, livestock and vehicle pass-through after laying and finishing.
3. at composite geo-membrane upper berth gravelly soil insulating course, and placement in layers rolls, and insulating course should be provided with 2% horizontal wall inscription.The first floor filler adopts light-duty bulldozer to pave or manually pave, and thickness 30cm does not have the stone of being with corner angle in the soil.At distance composite geo-membrane filler more nearby, maximum particle diameter is not more than 6cm.All vehicles, construction machinery only allow to travel along the axis direction of embankment.Near location, agro-farming zone, must take the method broken-up laying that the same day, material loading covered comprehensively.
4. with composite geo-membrane the gravelly soil insulating course is coated, adopt gravelly soil to fill between insulating course and the former road bed layer, top layer degree of compaction is more than 97%.
Embodiment 2: with Bu Kesaier to the ironworks ditch to the section road event of Tuoli, the faces of land, highway section such as K56+520～K56+920, K57+100～K58+140, K95+512～K95+728, K138+080～K138+420, K208+460～K209+480, K210+120～K210+370, K222+170～K222+470, K225+880～K226+080 are white salt marsh.
Treatment measures: remove roadbed top layer salinized soil (removing the situation of thickness), change and fill out gravelly soil, and coarse sand loaded filter coating gravelly soil insulating course is set according to salinized soil.
This section road structure layer comprises that the thick asphalt surface course of 3cm, 18cm solid cement are stablized sandy gravel stratum, the coarse sand loaded filter coats gravelly soil insulating course and former road bed layer.Contain cement 4 ~ 6% in the cement Stability Gravel layer, cement is selected Portland cement for use No. 32.5, and all the other are gravel.Its medium coarse sand loaded filter coats the gravelly soil insulating course and comprises upper strata coarse sand class loaded filter, gravel insulating course and lower floor's coarse sand class loaded filter, and its construction sequence is as follows:
1. lay lower floor's coarse sand class loaded filter earlier, thickness 10cm, degree of compaction reaches more than 96%; Press design thickness and lay the bound edge gravel soil, making of holostrome then, crown slope is not less than 2%, and it is smooth to pave, and manually cooperates levelling ground;
2. lay the gravel insulating course, carry out layered rolling, degree of compaction reaches more than 96%; Earlier with crawler dozer voltage stabilizing 1-2 time, roll with the above vibratory roller of 12t again during compacting; Thickness is 40cm;
3. lay upper strata coarse sand class loaded filter, thickness 10cm, degree of compaction reaches more than 96%, fills gravel class filler after the compacting.
Its cobblestone maximum particle diameter is 50mm, is not more than 5% less than the gravelly soil mud content of 0.5mm.Coarse sand class loaded filter medium coarse sand mud content is not more than 3%.
Claims (5)
1. job practices of handling the salinized soil roadbed with insulating course, road structure comprises asphalt surface course, the cement Stability Gravel layer is or/and the prototype gradation sandy gravel stratum, insulating course and former road bed layer, it is characterized in that: described insulating course adopts composite geo-membrane to coat the form setting of gravelly soil insulating course, and its construction sequence is:
(1) remove former supercrust ground surface soil earlier, grinding compacting, degree of compaction makes road bed smooth more than 90%;
(2) press the subgrade cross section width and lay composite geo-membrane, lay inboard composite geo-membrane earlier, lay outside composite geo-membrane then, composite geo-membrane should be laid open and flat and be close to road bed, adjacent two width of cloth lap width 〉=20cm during laying;
(3) at composite geo-membrane upper berth gravelly soil insulating course, and placement in layers rolls;
(4) with composite geo-membrane the gravelly soil insulating course is coated, adopt gravelly soil to fill between insulating course and the former road bed layer, top layer degree of compaction is more than 97%.
2. job practices according to claim 1, it is characterized in that: described composite geo-membrane adopts two-layer nonwoven, centre to add one deck polyvinyl chloride or polyethylene sheeting structure, require composite geo-membrane thickness 〉=0.3mm, permeability 〉=0.6MPa, breaking strength 〉=10kN/m, tearing strength 〉=0.32kN, elongation at break 〉=50%.
3. job practices according to claim 1 is characterized in that: described gravelly soil insulating course comprises upper strata coarse sand class loaded filter, gravel insulating course and lower floor's coarse sand class loaded filter, and construction sequence is:
(11) lay lower floor's coarse sand class loaded filter earlier, thickness 10cm, degree of compaction is more than 96%; Press design thickness and lay the bound edge gravel soil, making of holostrome, crown slope 〉=2%, it is smooth to pave, and manually cooperates levelling ground;
(12) lay the gravel insulating course, thickness is 40cm, and degree of compaction is more than 96%; Carry out layered rolling, earlier with crawler dozer voltage stabilizing 1-2 time, roll with the above vibratory roller of 12t again during compacting;
(13) lay upper strata coarse sand class loaded filter, thickness 10cm, degree of compaction is filled filler more than 96% after the compacting.
4. according to each described job practices of claim 1-3, it is characterized in that: contain cement 4 ~ 6% in the described cement Stability Gravel layer, all the other are sand gravel, and cement is selected Portland cement for use No. 32.5, and this layer thickness is 15-20cm.
5. according to each described job practices of claim 1-3, it is characterized in that: the sand gravel maximum particle diameter is 5cm in the described prototype gradation sandy gravel stratum, contains soil amount＜10%.
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| CN103015283A (en) * | 2012-12-30 | 2013-04-03 | 中南大学 | Novel roadbed structure for phreatic high inland sulphate salty soil |
| CN103061225A (en) * | 2011-10-21 | 2013-04-24 | 中铁二十一局集团有限公司 | Rock salt railroad bed structure of section parallel to existing line and construction method of structure |
| CN103161109A (en) * | 2011-12-13 | 2013-06-19 | 中国二十冶集团有限公司 | Method for subgrade filling of peat soil subgrade by sea sand |
| CN103306178A (en) * | 2013-06-04 | 2013-09-18 | 北京航空航天大学 | Over-sulphate salty soil cemented roadbed, basement layer and subbase layer as well as construction method thereof |
| CN103422408A (en) * | 2013-08-30 | 2013-12-04 | 中铁西北科学研究院有限公司 | Method for constructing roadbed with sulfuric acid rock salt as roadbed packing |
| CN103628375A (en) * | 2012-08-24 | 2014-03-12 | 新疆交通建设（集团）有限责任公司 | Rock salt roadbed construction method |
| CN104805745A (en) * | 2015-03-03 | 2015-07-29 | 宋金博 | Saline land roadbed laying method with environment protection effect |
| CN106087627A (en) * | 2016-06-16 | 2016-11-09 | 中交四公局第二工程有限公司 | Red sandstone roadbed filling construction technique |
| CN106599444A (en) * | 2016-12-09 | 2017-04-26 | 山东大学 | Partition disposal method for salts on saline soil subgrade |
| CN106988179A (en) * | 2017-03-21 | 2017-07-28 | 中冶天工集团有限公司 | A kind of road structure for preventing salinized soil from corroding and its construction method |
| CN107938454A (en) * | 2016-10-12 | 2018-04-20 | 新疆铁道勘察设计院有限公司 | Utilize the filling roadbed method of rock salt |
| CN108316079A (en) * | 2018-04-02 | 2018-07-24 | 长沙理工大学 | A kind of pavement structure and its construction method |
| CN108774931A (en) * | 2018-08-29 | 2018-11-09 | 中交第二公路工程局有限公司 | A kind of subgrade construction technique suitable for saline soil area |
| CN108842748A (en) * | 2018-06-25 | 2018-11-20 | 四川省场道工程有限公司 | A kind of processing of road in airport salinized soil and control method |
| CN109024532A (en) * | 2018-08-15 | 2018-12-18 | 甘肃路桥第三公路工程有限责任公司 | A kind of subgrade in salty soil zone is actively every salt construction method |
| CN109577123A (en) * | 2018-12-21 | 2019-04-05 | 中铁四局集团第工程有限公司 | One kind is strong, crosses saline-alkali soil foundation construction method |
| CN110195380A (en) * | 2019-05-17 | 2019-09-03 | 中铁二院工程集团有限责任公司 | Consider Ballast track coarse grain salt marsh dirt road embankment structure and construction method that violent temperature influences |
| CN114855519A (en) * | 2022-05-25 | 2022-08-05 | 兰州理工大学 | Saline soil roadbed laying method and roadbed structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275394A (en) * | 2008-04-28 | 2008-10-01 | 北京航空航天大学 | Curing method for saline soil |
| CN101806032A (en) * | 2010-04-22 | 2010-08-18 | 天津市市政工程设计研究院 | Treated chlorine saline soil and method for using same as roadbed and roadbase |
| CN101851894A (en) * | 2010-07-01 | 2010-10-06 | 中国科学院地质与地球物理研究所 | Protection method for improving salt expansion or dissolution sink of salty soil |
-
2011
- 2011-01-27 CN CN201110029316XA patent/CN102140771B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275394A (en) * | 2008-04-28 | 2008-10-01 | 北京航空航天大学 | Curing method for saline soil |
| CN101806032A (en) * | 2010-04-22 | 2010-08-18 | 天津市市政工程设计研究院 | Treated chlorine saline soil and method for using same as roadbed and roadbase |
| CN101851894A (en) * | 2010-07-01 | 2010-10-06 | 中国科学院地质与地球物理研究所 | Protection method for improving salt expansion or dissolution sink of salty soil |
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| CN103061225A (en) * | 2011-10-21 | 2013-04-24 | 中铁二十一局集团有限公司 | Rock salt railroad bed structure of section parallel to existing line and construction method of structure |
| CN103161109A (en) * | 2011-12-13 | 2013-06-19 | 中国二十冶集团有限公司 | Method for subgrade filling of peat soil subgrade by sea sand |
| CN103628375A (en) * | 2012-08-24 | 2014-03-12 | 新疆交通建设（集团）有限责任公司 | Rock salt roadbed construction method |
| CN103015283A (en) * | 2012-12-30 | 2013-04-03 | 中南大学 | Novel roadbed structure for phreatic high inland sulphate salty soil |
| CN103306178A (en) * | 2013-06-04 | 2013-09-18 | 北京航空航天大学 | Over-sulphate salty soil cemented roadbed, basement layer and subbase layer as well as construction method thereof |
| CN103306178B (en) * | 2013-06-04 | 2015-11-18 | 北京航空航天大学 | A kind of road foundation of cementing ultra-sulphate stain soil, basic unit, subbase |
| CN103422408A (en) * | 2013-08-30 | 2013-12-04 | 中铁西北科学研究院有限公司 | Method for constructing roadbed with sulfuric acid rock salt as roadbed packing |
| CN104805745A (en) * | 2015-03-03 | 2015-07-29 | 宋金博 | Saline land roadbed laying method with environment protection effect |
| CN104805745B (en) * | 2015-03-03 | 2017-02-01 | 宋金博 | Saline land roadbed laying method with environment protection effect |
| CN106087627A (en) * | 2016-06-16 | 2016-11-09 | 中交四公局第二工程有限公司 | Red sandstone roadbed filling construction technique |
| CN107938454A (en) * | 2016-10-12 | 2018-04-20 | 新疆铁道勘察设计院有限公司 | Utilize the filling roadbed method of rock salt |
| CN106599444A (en) * | 2016-12-09 | 2017-04-26 | 山东大学 | Partition disposal method for salts on saline soil subgrade |
| CN106988179A (en) * | 2017-03-21 | 2017-07-28 | 中冶天工集团有限公司 | A kind of road structure for preventing salinized soil from corroding and its construction method |
| CN108316079A (en) * | 2018-04-02 | 2018-07-24 | 长沙理工大学 | A kind of pavement structure and its construction method |
| CN108842748A (en) * | 2018-06-25 | 2018-11-20 | 四川省场道工程有限公司 | A kind of processing of road in airport salinized soil and control method |
| CN109024532A (en) * | 2018-08-15 | 2018-12-18 | 甘肃路桥第三公路工程有限责任公司 | A kind of subgrade in salty soil zone is actively every salt construction method |
| CN108774931A (en) * | 2018-08-29 | 2018-11-09 | 中交第二公路工程局有限公司 | A kind of subgrade construction technique suitable for saline soil area |
| CN109577123A (en) * | 2018-12-21 | 2019-04-05 | 中铁四局集团第工程有限公司 | One kind is strong, crosses saline-alkali soil foundation construction method |
| CN110195380A (en) * | 2019-05-17 | 2019-09-03 | 中铁二院工程集团有限责任公司 | Consider Ballast track coarse grain salt marsh dirt road embankment structure and construction method that violent temperature influences |
| CN110195380B (en) * | 2019-05-17 | 2023-04-07 | 中铁二院工程集团有限责任公司 | Ballast track coarse-grained saline soil embankment structure considering severe air temperature influence and construction method |
| CN114855519A (en) * | 2022-05-25 | 2022-08-05 | 兰州理工大学 | Saline soil roadbed laying method and roadbed structure |
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