CN111485464A - Rock salt road structure and construction method thereof - Google Patents
Rock salt road structure and construction method thereof Download PDFInfo
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- CN111485464A CN111485464A CN202010326027.5A CN202010326027A CN111485464A CN 111485464 A CN111485464 A CN 111485464A CN 202010326027 A CN202010326027 A CN 202010326027A CN 111485464 A CN111485464 A CN 111485464A
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- 235000002639 sodium chloride Nutrition 0.000 title claims abstract description 213
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims abstract description 57
- 239000011780 sodium chloride Substances 0.000 title claims abstract description 57
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 150000003839 salts Chemical class 0.000 claims abstract description 152
- 239000010410 layer Substances 0.000 claims abstract description 143
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 239000011435 rock Substances 0.000 claims abstract description 110
- 239000002689 soil Substances 0.000 claims abstract description 48
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 33
- 239000002344 surface layer Substances 0.000 claims abstract description 20
- 239000004746 geotextile Substances 0.000 claims abstract description 18
- 230000004888 barrier function Effects 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000001704 evaporation Methods 0.000 claims description 76
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- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 38
- 239000000920 calcium hydroxide Substances 0.000 claims description 28
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 28
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 28
- 239000004575 stone Substances 0.000 claims description 25
- 239000000945 filler Substances 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 claims description 19
- 238000005507 spraying Methods 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 239000011358 absorbing material Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
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- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
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- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 3
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 3
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- 238000001914 filtration Methods 0.000 claims 1
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- 239000000463 material Substances 0.000 description 7
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- 239000002352 surface water Substances 0.000 description 6
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- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 230000009189 diving Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- 238000013461 design Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 241000185686 Apocynum venetum Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
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- 238000004090 dissolution Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910001607 magnesium mineral Inorganic materials 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
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- 229910052600 sulfate mineral Inorganic materials 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
Abstract
The invention relates to a rock salt road structure and a construction method thereof, belonging to the road construction technology. Above-mentioned rock salt road structure includes: road main part, road main part have 5 layer structures at least, and 5 layer structures are by salt rock soil matrix, hinder salt water barrier, salt rock road bed, waterproof layer and surface course from up stacking in proper order down and form, wherein, hinder the salt water barrier and be the geotextile partition layer of lime hydrate partition layer or spreading lime hydrate. The construction method of the rock salt road structure comprises the following steps: s1, processing an original salt rock soil foundation; s2, paving a salt-blocking water-resisting layer on the salt rock soil foundation; s3, laying a salt rock roadbed; s4, laying a waterproof layer; and S5, paving a road surface layer. The rock salt road structure can effectively prevent diseases such as collapse, arch expansion and the like, and has the advantages of stable mechanical property, good adaptability, wide raw material source and good economic benefit.
Description
Technical Field
The invention belongs to the technical field of road construction, and particularly relates to a rock salt road structure and a construction method thereof.
Background
The salt rock is a mineral rock formed by evaporating seawater, lake or underground water and precipitating, and mainly comprises halide of potassium, sodium, calcium and magnesium and sulfate mineral. A large amount of salt rocks are distributed in dry salt lake areas such as apocynum venetum and khar in China, and if the salt rocks are used as road building materials, the use amount of traditional road building materials such as water, sand and gravel can be reduced, so that the method has great significance for traffic construction of the dry salt lake areas.
At present, the existing rock salt road building mode is that a rock salt roadbed is paved on a rock salt soil bed, and then a road surface layer is paved on the rock salt roadbed, so that the rock salt road has the characteristics of strong bearing capacity, stability and firmness. However, in the operation process of the rock salt road, the rock salt roadbed is easily subjected to repeated crystallization and salinization under the action of underground water and salt migration, so that the defects of road structure collapse, arch expansion and the like are caused, and the service quality and the service life of the rock salt road are influenced.
Disclosure of Invention
The invention provides a rock salt road structure for solving the technical problems, and the rock salt road structure can solve the problems that the rock salt roadbed is easy to repeatedly crystallize and salinize under the action of underground water and salt migration, so that the road structure is sunk, arched and deformed, and the quality and the service life of a rock salt road are influenced.
The technical scheme for solving the technical problems is as follows: a salt rock roadway structure, comprising: the road main part that the level set up, the road main part has 5 layer structures at least, 5 layer structures are by salt rock soil matrix, hinder salt water barrier, salt rock roadbed, waterproof layer and surface course from up superpose formation in proper order down, wherein, hinder the salt water barrier and cut off for the slaked lime and cut offA layer or a geotextile partition layer spread with slaked lime, wherein the slaked lime spreading amount of the salt-resisting water-resisting layer is 3kg/m2-6kg/m2。
The invention has the beneficial effects that:
(1) proper amount of slaked lime and Ca in the slaked lime are scattered in the salt-blocking and water-resisting layer2+With upward migration of SO from water salts4 2-The reaction is carried out to ensure that the sulfate which moves upwards generates precipitate, which is beneficial to blocking SO4 2-The slaked lime is matched with the geotextile material, so that the influence of surface water and capillary water on the salt rock roadbed can be effectively reduced, the diseases such as subsidence, arch expansion and the like are prevented, and the quality of a road structure is effectively improved;
(2) the rock salt road structure has stable mechanical property, good adaptability and wide raw material source, ensures the service performance of the road within the design period, and improves the economic benefit.
On the basis of the technical scheme, the invention can be further improved as follows.
The salt rock soil foundation and salt and water resisting and resisting layer comprises a salt rock soil foundation and a salt rock soil foundation, and further comprises a gravel structure layer I and a gravel structure layer II, wherein the gravel structure layer I is positioned between the salt rock soil foundation and the salt and water resisting and resisting layer, the thickness of the gravel structure layer I is 10-30cm, and the particle size of stone particles of the gravel structure layer I is 2.36-40 mm; the gravel structure layer II is located between the salt-resistant water-proof layer and the salt rock roadbed, the thickness of the gravel structure layer II is 10-30cm, and the particle size of stone particles of the gravel structure layer II is 2.36-40 mm.
The beneficial effect of adopting the further scheme is that: through setting up rubble structural layer I and rubble structural layer II, can improve road structure's whole bearing capacity, further reduce the upward migration of underground capillary water simultaneously to prevent that the salt rock road bed from receiving the erosion.
Further, the both sides of road main part still are provided with the side slope respectively, the toe department of side slope is provided with the gutter that has the evaporation station, the fixed evaporimeter that is provided with on the evaporation station, evaporimeter below is provided with the diversion stay tube, the first end of diversion stay tube with evaporimeter bottom fixed connection, the second end of diversion stay tube is towards keeping away from the direction of evaporation station extends, the inside packing of diversion stay tube has the filler that absorbs water, set up a plurality of holes of permeating water that run through the diversion stay tube on the second end outer wall of diversion stay tube.
The beneficial effect of adopting the further scheme is that:
(1) the water diversion supporting pipe can guide underground diving to the evaporation table and the evaporation body to migrate along the water diversion supporting pipe through the water absorption filler, so that the underground water level in a road width range is reduced, the upward migration of underground water salt is favorably prevented, the rapid evaporation of the side ditch collected water can be realized, the contact between a rock salt roadbed and the underground water salt can be reduced, and the quality of a rock salt road is effectively improved;
(2) through the cooperation of evaporation table, evaporation body, drainage stay tube and salt water barrier layer, can play more comprehensive and three-dimensional protection to the rock salt road bed, the erosion that the protection rock salt road bed received prolongs the life of road.
Furthermore, the evaporation body is of a through grid structure, and the top of the evaporation body is arc-shaped.
The beneficial effect of adopting the further scheme is that: the top of the evaporation body is arc-shaped, so that the contact area with air can be enlarged, and the evaporation effect is improved; the inside of the evaporation body is of a through grid structure, so that the transferred underground water salt can be ensured to smoothly reach the surface, and a foundation is laid for evaporation.
Further, the surface of the evaporator is coated with a heat absorbing material layer.
The beneficial effect of adopting the further scheme is that: the surface of the evaporator is coated with the heat-absorbing material layer, so that the heat-absorbing capacity of the evaporator can be improved, the evaporation process is accelerated, and the evaporation capacity of the evaporator to underground water salt is improved.
Further, the water-absorbing filler is water-absorbing non-woven geotextile or water-absorbing sponge.
The beneficial effect of adopting the further scheme is that: the water absorption filler has wide source, is convenient and easy to obtain, and provides a foundation for the migration of underground water salt.
Further, the side ditch still includes the catchment canal, the first side of catchment canal with the toe of side slope is connected, the second side top of catchment canal is equipped with the manger plate low bank, the evaporation platform is located the catchment canal with between the manger plate low bank, the catchment canal the evaporation platform with the manger plate low bank forms the multistage stair structure that increases in proper order.
The beneficial effect of adopting the further scheme is that: can effectively catchment through the ditch that catchments that sets up in the side ditch, the evaporation station then can accelerate underground dive evaporation, can reduce the groundwater level of way width of cloth within range, and during the outer surface water of way width of cloth flowed into the side ditch when the manger plate low bank can avoid the rainfall, the setting of side ditch can effectively reduce the influence of the moisture of different sources to rock salt road structure on the whole to guarantee road quality.
In addition, the invention also provides a salt rock road construction method, which can solve the technical problems of high cost, more diseases and low road adaptability of the existing road construction in the dry salt lake region.
The technical scheme for solving the technical problems is as follows: a rock salt road construction method comprises the following steps:
s1, selecting an original rock salt soil foundation, and then sequentially carrying out rolling crushing treatment, saturated brine spraying treatment and leveling vibration rolling treatment on the surface layer of the original rock salt soil foundation to obtain the rock salt soil foundation;
s2, paving a salt-resistant water-proof layer on the saline soil foundation obtained in the step S1 to obtain the road structure I, wherein the salt-resistant water-proof layer is a slaked lime partition layer or a geotextile partition layer spreading slaked lime, and the distribution amount of the slaked lime of the salt-resistant water-proof layer is 3kg/m2-6kg/m2；
S3, paving a salt rock roadbed filled with salt rock filler on the road structure I obtained in the step S2, and then sequentially performing spraying treatment, saturated brine infiltration treatment, saturated brine spraying treatment and rolling treatment on the salt rock roadbed through a curing liquid A to obtain a road structure II, wherein the curing liquid A is subjected to slaking treatment and filtered saturated brine;
s4, paving a waterproof layer on the road structure II obtained in the step S3 to obtain a road structure III;
and S5, paving a road surface layer on the road structure III obtained in the step S4 to obtain the salt rock road.
The beneficial effect of adopting the further scheme is that:
the road structure can be made from local materials according to local conditions, salt rocks and saturated brine in dry salt lake regions are fully utilized to carry out road filling construction, and construction cost is effectively reduced;
(1) saturated brine solution treated by slaked lime can effectively reduce SO 42-ions in the solution, and reduce arch expansion of the filled salt rock roadbed caused by sulfate water absorption;
(3) saturated brine is adopted to wet the salt rock filler particles, so that construction and rolling are convenient, the mechanical property of the roadbed can be improved by evaporation of roadbed moisture, and the soluble sulfate in the saturated brine can be reduced by treating the saturated brine with slaked lime, so that salt expansion diseases of the salt rock roadbed are avoided;
(4) the crushed and ground surface salt rocks are used as the soil foundation layer filler, so that the saturation of potential upward-migrating water salt solution can be effectively increased, the saturation of capillary water in a road width range is improved, meanwhile, the arrangement of the water salt partition layer can reduce the influence of the capillary water on each structural layer of the salt rock road, and the overall stability of the salt rock roadbed is improved.
Further, the step S2 includes, before the laying of the salt-resistant and water-resistant layer, laying a gravel structure layer i on the rock salt soil bed, and then laying the salt-resistant and water-resistant layer on the gravel structure layer i; and after the salt and water resistant layer is laid, a gravel structure layer II is laid on the salt and water resistant layer.
Further, the method comprises a step S6, wherein in the step S6, side slopes are built on two sides of the salt rock road obtained in the step S5, waterproof curing agents are sprayed on the surfaces of the side slopes, water collecting channels, evaporation tables and water retaining banks are excavated and built at the slope feet of the side slopes, and evaporation bodies and water diversion support pipes are arranged on the evaporation tables, wherein water absorption fillers are filled in the water diversion support pipes; the waterproof curing agent is prepared by mixing a raw material A and saturated brine in a mass ratio of (2-4) to 100, wherein the raw material A is one or more of carboxymethyl cellulose, hydroxypropyl methyl cellulose and carboxymethyl starch,
the beneficial effect of adopting the further scheme is that: the side slope surface is treated by adopting a waterproof curing agent solution, so that the infiltration of ground surface precipitation into a roadbed range can be reduced, the roadbed is prevented from being damaged by the dissolution, and the potential arch swelling effect of the side slope salt rock can be weakened by the cementing effect of the side slope.
Drawings
FIG. 1 is a schematic structural view of a rock salt road structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a rock salt road structure layer of a section of the invention with a groundwater level within 1.5m below the surface of the earth;
FIG. 3 is an enlarged schematic view of the rock salt road structure A-A of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a soil base layer I; 2. a diving layer; 3. a soil base layer; 4. a road body; 5. a rock salt soil base; 6. a crushed stone structure layer I; 7. a salt and water barrier layer; 8. a gravel structure layer II; 9. a salt rock roadbed; 10. a waterproof layer; 11. a pavement layer; 11-1, and carrying out discontinuous graded broken stone base course; 11-2, a permeable layer; 11-3, an asphalt surface layer; 12. side slope; 13. side ditches; 13-1, collecting the canal; 13-2, an evaporation table; 13-3, a water retaining bank; 13-4, an evaporant; 13-5, water diversion supporting tubes; 13-6 water-absorbing filler.
Detailed Description
The present invention is described in further detail below by way of specific examples and comparative examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
In the following modes, the slaked lime, the saturated brine, the raw material A, the broken stone and the graded water absorption filler are all products sold on the market.
The invention is further illustrated with reference to the accompanying figures 1-3:
in a first mode
This mode provides a salt rock road structure, combines fig. 1 to 3, and it includes: the road main part that the level set up, the road main part has 5 at least layer structures, 5 layer structures are by salt rock soil matrix, hinder salt water barrier, salt rock roadbed, waterproof layer and surface course from up superpose formation in proper order down, wherein, hinder the salt water barrier for lime hydrate partition layer or spread the geotextile partition layer of lime hydrate, the lime hydrate spreading amount that hinders the salt water barrier is 3kg/m2-6kg/m2SaidThe thickness of the salt and water barrier layer is more than or equal to 30 cm.
The method can solve the problems that the existing rock salt roadbed is easy to crystallize and salinize repeatedly under the action of underground water and salt migration, causes the sinking, arch expansion and deformation of a road structure, and influences the quality and the service life of the rock salt road.
The rock salt road structure has stable mechanical property, good adaptability and wide raw material source, ensures the service performance of the road within the design period, and improves the economic benefit; proper amount of slaked lime and Ca in the slaked lime are spread in the salt and water resisting layer 72-With upward migration of SO4 in the water salt2-The reaction is carried out to ensure that the sulfate which moves upwards generates precipitate, which is beneficial to blocking SO4 2-The upward migration of the rock salt roadbed 9 can effectively reduce the influence of surface water and capillary water on the rock salt roadbed by the cooperation of the slaked lime and the geotextile material, prevent the diseases such as sinking and arch expansion and effectively improve the quality of the road structure.
The salt rock roadbed 9 is formed by filling salt rock filler, the particle size of salt rock filler particles is L, and the L meets the requirement that the particle size is 0< L <150 mm.
Therefore, the saturation of the potential upward-migration water-salt solution can be effectively increased by the salt-rock roadbed 9, the saturation of capillary water in a road width range is improved, meanwhile, the influence of the capillary water on each structural layer of the salt-rock road can be reduced by the arrangement of the water-salt partition layer, and the overall stability of the salt-rock roadbed 9 is improved.
Wherein the waterproof layer 10 is a geotextile waterproof layer 10.
Therefore, the influence of surface water and capillary water on the salt rock roadbed 9 can be effectively reduced by adopting the waterproof geotextile material, and the roadbed is prevented from corrosion diseases.
The pavement layer 11 comprises an intermittent graded macadam base layer 11-1, a permeable layer 11-2 and a dense graded asphalt surface layer 11-3, and the discontinuous graded macadam base layer, the permeable layer 11-2 and the dense graded asphalt surface layer 11-3 are sequentially stacked from bottom to top. The thickness of the discontinuous graded broken stone base layer 11-1 is 15cm-30 cm. The mass percentage range of graded crushed stones passing through different sieve holes is as follows: mesh opening of 31.5 mm: 94.5% -100%, 26.6mm sieve opening: 89.2% -94.6%, mesh size of 19 mm: 72.6% -83.5%, mesh size of 16 mm: 62.6% -76.3%, mesh size of 13.2 mm: 53.7% -67.1%, 9.5mm sieve opening: 38.7% -45.7%, 4.75mm sieve opening: 34.6% -41.4%, 2.36mm sieve opening: 20.3% -28.2%, mesh size of 1.15: 13.2% -18.3%, mesh size of 0.6 mm: 7.4% -11.5%, mesh size of 0.3 mm: 5.2% -8.5%, mesh size of 0.15 mm: 3.4% -6.5%, mesh size of 0.075 mm: 1.8 to 2.7 percent.
Therefore, by adopting the discontinuous graded broken stone base layer 11-1 and the dense graded asphalt surface layer 11-3, the road structure layer can be better suitable for the passage of heavy-duty vehicles, the occurrence of diseases such as net cracks, tracks and the like can be reduced, and the diseases caused by the surface water permeating into the road structure can be avoided.
It should be noted that the form of the rock salt road structure of the present invention is very diverse and we provide several alternative ways in the following.
Mode two
The difference between the mode and the mode one is that, with reference to fig. 1 to 3, the rock breaking structure layer i 6 and the rock breaking structure layer ii 8 are further included, the rock breaking structure layer i 6 is located between the salt soil foundation 5 and the salt and water resisting and isolating layer 7, the thickness of the rock breaking structure layer i 6 is 10-30cm, and the particle size of the rock particles of the rock breaking structure layer i 6 is 2.36-40 mm; the gravel structure layer II 8 is located between the salt-resistant water-proof layer 7 and the salt rock roadbed 9, the thickness of the gravel structure layer II 8 is 10-30cm, and the particle size of stone particles of the gravel structure layer II 8 is 2.36-40 mm.
Like this, through setting up rubble structural layer I6 and rubble structural layer II 8, can improve road structure's whole bearing capacity, further reduce the ascending migration of underground capillary water simultaneously to prevent that salt rock roadbed 9 from receiving the corrosion.
Mode III
The difference between the present mode and the first mode is that, with reference to fig. 1 to 3, two sides of the road body 4 are further provided with side slopes 12, a trough 13 with an evaporation table 13-2 is provided at a toe of the side slope 12, an evaporation body 13-4 is fixedly provided on the evaporation table 13-2, a water diversion support pipe 13-5 is provided below the evaporation body 13-4, a first end of the water diversion support pipe 13-5 is fixedly connected with the bottom of the evaporation body 13-4, a second end of the water diversion support pipe 13-5 extends in a direction away from the evaporation table 13-2, the water diversion support pipe 13-5 is filled with water absorption filler, and a plurality of water permeable holes penetrating through the water diversion support pipe 13-5 are provided on an outer wall of the second end of the water diversion support pipe 13-5.
Therefore, the water diversion supporting pipes 13-5 can guide underground diving to the evaporation table 13-2 and the evaporation body 13-4 to move along the water diversion supporting pipes 13-5 through the water absorption filler, so that the underground water level in the road width range is reduced, the upward movement of underground water salt is favorably prevented, the rapid evaporation of the water collected by the side ditch 13 can be realized, the contact between a rock salt roadbed and the underground water salt can be reduced, and the quality of the rock salt road is effectively improved. In addition, through the matching of the evaporation table 13-2, the evaporation body 13-4, the water diversion support pipe 13-5 and the salt and water barrier layer 7, the rock salt roadbed can be protected more comprehensively and three-dimensionally, the erosion of the rock salt roadbed is protected, and the service life of a road is prolonged.
The evaporation body 13-4 is of a through grid structure, and the top of the evaporation body 13-4 is arc-shaped.
Thus, the top of the evaporation body 13-4 is arc-shaped, which can enlarge the contact area with air, thereby improving the evaporation effect; the inside of the evaporation body 13-4 is of a through grid structure, so that the transferred underground water salt can be ensured to smoothly reach the surface, and a foundation is laid for evaporation.
Wherein, the surface of the evaporation body 13-4 is coated with a heat absorbing material layer. The surface of the evaporation body 13-4 is coated with the heat-absorbing material layer, so that the heat-absorbing capacity of the evaporation body 13-4 can be improved, the evaporation process is accelerated, and the evaporation capacity of the evaporation body 13-4 to the underground water salt is improved.
Wherein the water-absorbing filler is water-absorbing non-woven geotextile or water-absorbing sponge. The water absorption filler has wide source, is convenient and easy to obtain, and provides a foundation for the migration of underground water salt. Specifically, the water-absorbing filler is water-absorbing non-woven geotextile.
Mode IV
The difference between the present mode and the first mode is that, with reference to fig. 1 to 3, the side ditch 13 further includes a water collecting ditch 13-1, a first side surface of the water collecting ditch 13-1 is connected with a slope toe of the side slope 12, a water retaining bank 13-3 is disposed at a top of a second side surface of the water collecting ditch 13-1, the evaporation table 13-2 is located between the water collecting ditch 13-1 and the water retaining bank 13-3, and the water collecting ditch 13-1, the evaporation table 13-2 and the water retaining bank 13-3 form a multi-step structure with sequentially increasing height.
Therefore, the water collecting channel 13-1 in the side ditch 13 can effectively collect water, the evaporation table 13-2 can accelerate underground submerged evaporation, the underground water level in the range of road width can be reduced, the water retaining bank 13-3 can prevent surface water outside the road width from flowing into the side ditch 13 during rainfall, and the side ditch 13 can effectively reduce the influence of water from different sources on the salt rock road structure in general, so that the road quality is ensured.
Mode five
In addition, the invention also provides a rock salt road construction method, which comprises the following steps:
s1, selecting an original salt rock soil matrix in a road width range, then rolling and crushing the surface layer of the original salt rock soil matrix, spraying saturated brine on the surface of the original salt rock soil matrix subjected to rolling and crushing, leveling and vibrating and rolling the surface of the original salt rock soil matrix sprayed with the saturated brine after the original salt rock soil matrix completely absorbs the saturated brine, and thus obtaining the salt rock soil matrix;
s2, paving a broken stone structure layer I with the thickness of 30cm on the saline soil foundation obtained in the step S1, compacting the broken stone structure layer I, and then lime slaking spreading amount on the broken stone structure layer I is 6kg/m2Paving a broken stone structure layer II with the thickness of 10cm on the geotextile partition layer spread with the slaked lime, and compacting the broken stone structure layer II to obtain a road structure I;
s3, paving a salt rock roadbed filled with salt rock filling materials on the road structure I obtained in the step S2, spraying a curing liquid A on the surface of the salt rock roadbed, infiltrating the salt rock roadbed treated by the curing liquid A with saturated brine, spraying saturated brine on the infiltrated salt rock roadbed, and rolling to obtain a road structure II, wherein the curing liquid A is the saturated brine treated by slaking and filtered;
s4, paving a waterproof layer on the road structure II obtained in the step S3 to obtain a road structure III;
s5, paving a road surface layer on the road structure III obtained in the step S4 to obtain a salt rock road main body;
s6, building side slopes on two sides of the main body of the salt rock road obtained in the step S5, spraying waterproof curing agents on the surfaces of the side slopes to form a layer of cured film on the surface layers of the side slopes, excavating and building a water collecting channel, an evaporation table and a water retaining bank at the slope feet of the side slopes, and installing an evaporation body and a water diversion support pipe on the evaporation table to obtain a road structure, wherein the water diversion support pipe is filled with water-absorbing non-woven geotextile; the waterproof curing agent is prepared by mixing carboxymethyl cellulose and saturated brine in a mass ratio of 4: 100.
Mode six
In addition, the invention also provides a rock salt road construction method, which comprises the following steps:
s1, selecting an original salt rock soil matrix in a road width range, then rolling and crushing the surface layer of the original salt rock soil matrix, spraying saturated brine on the surface of the original salt rock soil matrix subjected to rolling and crushing, leveling and vibrating and rolling the surface of the original salt rock soil matrix sprayed with the saturated brine after the original salt rock soil matrix completely absorbs the saturated brine, and thus obtaining the salt rock soil matrix;
s2, paving a gravel structure layer I with the thickness of 10cm on the saline soil foundation obtained in the step S1, compacting the gravel structure layer I, and paving slaked lime on the gravel structure layer I with the spreading amount of 3kg/m2Paving a broken stone structure layer II with the thickness of 30cm on the geotextile partition layer spread with the slaked lime, and compacting the broken stone structure layer II to obtain a road structure I;
s3, paving a salt rock roadbed filled with salt rock filling materials on the road structure I obtained in the step S2, spraying a curing liquid A on the surface of the salt rock roadbed, infiltrating the salt rock roadbed treated by the curing liquid A with saturated brine, spraying saturated brine on the infiltrated salt rock roadbed, and rolling to obtain a road structure II, wherein the curing liquid A is the saturated brine treated by slaking and filtered;
s4, paving a waterproof layer on the road structure II obtained in the step S3 to obtain a road structure III;
s5, paving a road surface layer on the road structure III obtained in the step S4 to obtain a salt rock road main body;
s6, building side slopes on two sides of the main body of the salt rock road obtained in the step S5, spraying waterproof curing agents on the surfaces of the side slopes to form a layer of cured film on the surface layers of the side slopes, excavating and building a water collecting channel, an evaporation table and a water retaining bank at the slope feet of the side slopes, and installing an evaporation body and a water diversion support pipe on the evaporation table to obtain a road structure, wherein water absorption sponges are filled in the water diversion support pipe; the waterproof curing agent is prepared by mixing carboxymethyl starch and saturated brine in a mass ratio of 4: 100.
Mode seven
In addition, the invention also provides a rock salt road construction method, which comprises the following steps:
s1, selecting an original salt rock soil matrix in a road width range, then rolling and crushing the surface layer of the original salt rock soil matrix, spraying saturated brine on the surface of the original salt rock soil matrix subjected to rolling and crushing, leveling and vibrating and rolling the surface of the original salt rock soil matrix sprayed with the saturated brine after the original salt rock soil matrix completely absorbs the saturated brine, and thus obtaining the salt rock soil matrix;
s2, paving a 20 cm-thick gravel structure layer I on the saline soil foundation obtained in the step S1, compacting the gravel structure layer I, and paving slaked lime on the gravel structure layer I with the spreading amount of 4kg/m2Paving a 20cm thick gravel structure layer II on the slaked lime partition layer, and compacting the gravel structure layer II to obtain a road structure I;
s3, paving a salt rock roadbed filled with salt rock filling materials on the road structure I obtained in the step S2, spraying a solidified liquid A on the surface of the salt rock roadbed, infiltrating the salt rock roadbed treated by the solidified liquid A with saturated brine, spraying saturated brine on the infiltrated salt rock roadbed, and rolling to obtain a road structure II, wherein the solidified liquid A is the saturated brine which is treated by slaking and filtered;
s4, paving a waterproof layer on the road structure II obtained in the step S3 to obtain a road structure III;
s5, paving a road surface layer on the road structure III obtained in the step S4 to obtain a salt rock road main body;
s6, building side slopes on two sides of the main body of the salt rock road obtained in the step S5, spraying waterproof curing agents on the surfaces of the side slopes to form a layer of cured film on the surface layers of the side slopes, excavating and building a water collecting channel, an evaporation table and a water retaining bank at the slope feet of the side slopes, and installing an evaporation body and a water diversion support pipe on the evaporation table to obtain a road structure, wherein the water diversion support pipe is filled with water-absorbing non-woven geotextile; the waterproof curing agent is prepared by mixing hydroxypropyl methyl cellulose and saturated brine in a mass ratio of 2: 100.
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, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A rock salt road structure, characterized in that it comprises: road main part (4) that the level set up, road main part (4) have 5 at least layer structures, 5 layer structures are by salt rock soil base (5), hinder salt water barrier (7), salt rock road bed (9), waterproof layer (10) and road surface layer (11) from up stacking formation in proper order down, wherein, hinder salt water barrier (7) and cut off the layer or spread the geotextile of slaked lime for slaked lime partition layer or spread, the slaked lime scattering volume that hinders salt water barrier (7) is 3kg/m2-6kg/m2。
2. The salt rock road structure of claim 1, further comprising a crushed stone structure layer I (6) and a crushed stone structure layer II (8), wherein the crushed stone structure layer I (6) is located between the salt rock soil foundation (5) and the salt and water resisting and isolating layer (7), the thickness of the crushed stone structure layer I (6) is 10-30cm, and the stone grain diameter of the crushed stone structure layer I (6) is 2.36-40 mm; the gravel structure layer II (8) is located between the salt-resistant water-resisting layer (7) and the salt rock roadbed (9), the thickness of the gravel structure layer II (8) is 10-30cm, and the particle size of stones of the gravel structure layer II (8) is 2.36-40 mm.
3. The rock salt road structure according to claim 1 or 2, wherein two sides of the road body (4) are respectively provided with a side slope (12), a side ditch (13) with an evaporation table (13-2) is arranged at the toe of the side slope (12), an evaporation body (13-4) is fixedly arranged on the evaporation table (13-2), a water guide supporting pipe (13-5) is arranged below the evaporation body (13-4), a first end of the water guide supporting pipe (13-5) is fixedly connected with the bottom of the evaporation body (13-4), a second end of the water guide supporting pipe (13-5) extends in the direction far away from the evaporation table (13-2), the inside of the water guide supporting pipe (13-5) is filled with water absorption filler (13-6), and the outer wall of the second end of the water guide supporting pipe (13-5) is provided with a plurality of water guide supporting pipes (13) which penetrate through the water guide supporting pipe (13) -5) water permeable pores.
4. A salt rock road structure according to claim 3, characterized in that the evaporation body (13-4) is a through grid structure, the top of the evaporation body (13-4) being arc-shaped.
5. Salt rock road structure according to claim 3, characterized in that the evaporation body (13-4) is surface coated with a layer of heat absorbing material.
6. Salt rock road structure according to claim 3, characterized in that the water-absorbing filler (13-6) is a water-absorbing non-woven geotextile or a water-absorbing sponge.
7. The salt rock road structure of claim 3, wherein the side ditch (13) further comprises a water collecting ditch (13-1), a first side surface of the water collecting ditch (13-1) is connected with a slope toe of the side slope (12), a water retaining bank (13-3) is arranged at the top of a second side surface of the water collecting ditch (13-1), the evaporation table (13-2) is positioned between the water collecting ditch (13-1) and the water retaining bank (13-3), and the water collecting ditch (13-1), the evaporation table (13-2) and the water retaining bank (13-3) form a multi-step structure with sequentially increased height.
8. A construction method of a rock salt road structure is characterized by comprising the following steps:
s1, selecting an original rock salt soil foundation, and then sequentially carrying out rolling crushing treatment, saturated brine spraying treatment and leveling vibration rolling treatment on the surface layer of the original rock salt soil foundation to obtain a rock salt soil foundation (5);
s2, paving a salt-resistant water-proof layer (7) on the salt rock soil foundation (5) obtained in the step S1 to obtain a road structure I, wherein the salt-resistant water-proof layer (7) is a slaked lime partition layer or a geotextile partition layer spread with slaked lime, and the distribution amount of the slaked lime of the salt-resistant water-proof layer (7) is 3kg/m2-6kg/m2；
S3, paving a salt rock roadbed (9) filled with salt rock filler on the road structure I obtained in the step S2, and then sequentially spraying a mixed solution of slaked lime and saturated brine on the salt rock roadbed (9), and performing spraying treatment of a curing solution A, soaking treatment of saturated brine, spraying treatment of saturated brine and rolling treatment to obtain a road structure II, wherein the saturated brine obtained by slaking and filtering the curing solution A is subjected to slaked lime treatment; (ii) a
S4, paving a waterproof layer (10) on the road structure II obtained in the step S3 to obtain a road structure III;
s5, paving a road surface layer (11) on the road structure III obtained in the step S4 to obtain the salt rock road.
9. The salt rock road structure of claim 8, wherein the step S2 further comprises, before laying the salt water barrier layer (7), laying a crushed stone structure layer I (6) on the salt rock soil bed (5), and thereafter laying the salt water barrier layer (7) on the crushed stone structure layer I (6); and after the salt and water resistant layer (7) is laid, a gravel structure layer II (8) is laid on the salt and water resistant layer (7).
10. The salt rock road structure of claim 8, further comprising a step S6, wherein the step S6 is to construct slopes (12) on both sides of the salt rock road obtained in the step S5, spray a waterproof curing agent on the surfaces of the slopes (12), excavate and construct a water collecting channel (13-1), an evaporation table (13-2) and a water retaining bank (13-3) at the toe of the slopes (12), and install an evaporation body (13-4) and a water guiding support pipe (13-5) on the evaporation table (13-2), wherein the water guiding support pipe (13-5) is filled with a water absorbing filler; the waterproof curing agent is prepared by mixing a raw material A and saturated brine in a mass ratio of (2-4) to 100, wherein the raw material A is one or more of carboxymethyl cellulose, hydroxypropyl methyl cellulose and carboxymethyl starch.
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