CN115897314A - Construction method for building temporary road by using waste slurry and residue soil - Google Patents
Construction method for building temporary road by using waste slurry and residue soil Download PDFInfo
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- CN115897314A CN115897314A CN202211422401.7A CN202211422401A CN115897314A CN 115897314 A CN115897314 A CN 115897314A CN 202211422401 A CN202211422401 A CN 202211422401A CN 115897314 A CN115897314 A CN 115897314A
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- vibrating screen
- muck
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- waste
- soil
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- 239000002699 waste material Substances 0.000 title claims abstract description 86
- 239000002689 soil Substances 0.000 title claims abstract description 77
- 239000002002 slurry Substances 0.000 title claims abstract description 69
- 238000010276 construction Methods 0.000 title claims abstract description 61
- 239000002245 particle Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 238000011049 filling Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 238000009415 formwork Methods 0.000 claims abstract description 7
- 239000010802 sludge Substances 0.000 claims description 28
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 22
- 238000000926 separation method Methods 0.000 claims description 21
- 239000004568 cement Substances 0.000 claims description 15
- 239000000292 calcium oxide Substances 0.000 claims description 14
- 235000012255 calcium oxide Nutrition 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 14
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 12
- 238000009825 accumulation Methods 0.000 claims description 8
- 229910052602 gypsum Inorganic materials 0.000 claims description 8
- 239000010440 gypsum Substances 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 238000006477 desulfuration reaction Methods 0.000 claims description 7
- 230000023556 desulfurization Effects 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 6
- 235000011152 sodium sulphate Nutrition 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000000378 calcium silicate Substances 0.000 description 5
- 229910052918 calcium silicate Inorganic materials 0.000 description 5
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910001653 ettringite Inorganic materials 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical group O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of temporary road construction, and discloses a construction method for constructing a temporary road by using waste slurry and residue soil, which comprises the following construction steps: 1) Vibrating and separating the waste slurry and residue soil to form large-particle residue soil and small-particle residue soil, mixing the small-particle residue soil and a water body, and feeding the mixture into a slurry pool to form residue soil slurry; 2) Conveying the muck slurry into a stirrer, adding a curing agent into the stirrer, and stirring and mixing the curing agent and the muck slurry to form slurry-state cured soil; 3) Conveying the large-particle muck to a construction area for paving to form a roadbed of the temporary road; 4) Placing side templates on two sides of the roadbed, wherein the side templates enclose a filling space on the roadbed, filling solidified soil in the filling space, and forming a solidified layer on the roadbed after the solidified soil is solidified; the side formwork is dismantled, and the roadbed and the solidified layer form a temporary road; therefore, the waste slurry and residue soil is effectively recycled, and the purpose of recycling the waste is achieved.
Description
Technical Field
The invention relates to the technical field of temporary road construction, in particular to a construction method for constructing a temporary road by using waste slurry and residue soil.
Background
At present, in foundation engineering, a large amount of waste slurry and residue soil can be generated due to hole forming construction of the cast-in-situ bored pile. The waste sludge is in a fluid plastic state due to extremely high water content, and forms almost fluid sludge. Because the waste mud and residue soil has overhigh water content and lower strength and is easy to cause site pollution, the common residue soil disposal site does not receive the waste mud and residue soil. Disposal of waste sludge and waste soil on a construction site is always a difficult problem.
In the prior art, to solve the problem, the waste slurry and residue soil of the construction site is usually dried, and after 5 to 7 days of drying, the waste slurry and residue soil loses moisture and becomes relatively dry common residue soil, and then is transported to a residue soil disposal site. However, the general construction site is narrow, a place for airing cannot be provided, and in rainy days, sunny days are less, and the airing time is longer, so that a method for timely treating waste slurry muck is needed to achieve the purpose of recycling waste.
Disclosure of Invention
The invention aims to provide a construction method for building a temporary road by using waste slurry and residue soil, and aims to solve the problem that the waste slurry and residue soil is difficult to recycle in the prior art.
The invention discloses a construction method for building a temporary road by using waste slurry and residue soil, which comprises the following construction steps:
1) Placing the waste slurry muck into a vibrating screen for vibration separation to form large-particle muck on the vibrating screen and small-particle muck penetrating through the vibrating screen, and mixing the small-particle muck with a water body to enter a mud pit to form muck slurry;
2) Conveying the muck slurry into a stirrer, adding a curing agent into the stirrer, and stirring and mixing the curing agent and the muck slurry to form slurry-state cured soil;
3) Conveying the large-particle muck to a construction area for paving to form a roadbed of the temporary road;
4) Placing side formworks on two sides of the roadbed, wherein the side formworks enclose to form a filling space on the roadbed, filling the solidified soil into the filling space, and forming a solidified layer on the roadbed after the solidified soil is solidified; and removing the side formworks, wherein the roadbed and the solidified layer form a temporary road.
Optionally, in the construction step 1), an excavator is used for excavating the waste slurry and residue soil, the waste slurry and residue soil is placed in a charging hopper, and the charging hopper is used for placing the waste slurry and residue soil on a vibrating screen.
Optionally, in the construction step 1), a horizontally arranged conveyer belt which is conveyed forward is arranged behind the vibrating screen, and the material transferring hopper is located above the conveyer belt; when the excavator places the excavated waste slurry and residue soil into the material transferring hopper, the waste slurry and residue soil in the material charging hopper falls onto the conveying belt from top to bottom and is conveyed to the vibrating screen forwards along with the conveying belt.
Optionally, the vibrating screen is placed in a separation box, the separation box is provided with a separation cavity with an open top, and the vibrating screen is arranged in the middle of the separation cavity; the vibrating screen is obliquely arranged downwards along the direction from back to front, and a bottom cavity is formed between the bottom of the separation cavity and the vibrating screen;
in the construction step 1), after the waste slurry muck is placed on a vibrating screen, the large-particle muck is placed on the vibrating screen along with the vibration of the vibrating screen, and is transmitted to the outside of the vibrating screen to be piled into a large-particle muck pile; the small-particle muck falls into the bottom cavity through the vibrating screen and is mixed with a water body to form the slurry muck, and the slurry muck is conveyed into the slurry tank.
Optionally, the rear end of the vibrating screen is arranged opposite to the charging hopper up and down, the front end of the vibrating screen is provided with a chute channel, and the chute channel is arranged obliquely downwards along the direction from the rear to the front;
in the construction step 1), large-particle muck left on the vibrating screen is discharged to an external accumulation area through a chute to be accumulated.
Optionally, a water spray pipe is arranged above the vibrating screen, and the water spray pipe is provided with a plurality of water spray heads arranged downwards; in the construction step 1), when the waste slurry and residue soil is placed on the vibrating screen for vibration separation, the plurality of water spray heads spray out water downwards, and the water washes the waste slurry and residue soil on the vibrating screen from top to bottom and falls into the bottom cavity along with small-particle residue soil.
Optionally, in the construction step 2), the curing agent is prepared by mixing cement clinker, slag powder, quicklime, flue gas desulfurization gypsum powder and anhydrous sodium sulphate.
Optionally, in the construction step 2), the curing agent is composed of, by weight, 25% -35% of cement clinker, 40% -70% of slag powder, 5% -10% of quicklime, 8% -15% of flue gas desulfurization gypsum powder, and 2% -5% of anhydrous sodium sulphate.
Optionally, the vibrating screen is in a disc shape, the vibrating screen is provided with a plurality of screen holes, and the screen holes are distributed over the vibrating screen in an array manner; the bottom of the bottom cavity is provided with a bottom plate, the bottom of the bottom plate is movably abutted against the bottom of the bottom cavity, and the bottom plate and the bottom of the bottom cavity are obliquely arranged in the same direction;
the vibrating screen is connected with a driving structure, and the driving structure drives the vibrating screen to alternately perform front-back reciprocating movement and transverse reciprocating movement; a connecting strip which is longitudinally arranged is connected between the rear end of the vibrating screen and the rear end of the bottom plate, the rear end of the chute channel is connected with the front end of the vibrating screen, and the front end of the chute channel extends to a stacking area;
a plurality of elastic strips are arranged on the vibrating screen and are arranged along the transverse bending of the vibrating screen; the middle part of the elastic strip is fixed on the vibrating screen and positioned between adjacent screen holes, two ends of the elastic strip are movably arranged and are arranged in a downward inclined direction along the vibrating screen, and two ends of the elastic strip are arranged in a downward bending way;
in the construction step 1), the driving structure drives the vibrating screen to alternately perform front-back reciprocating movement and transverse reciprocating movement, the vibrating screen drives the bottom plate to synchronously move through the connecting strip, the vibrating screen drives the chute channel to synchronously move, and the two ends of the elastic strip synchronously swing back and forth along with the vibrating screen to stir the bottom of waste mud and residue soil on the vibrating screen.
Optionally, a track frame is arranged above the vibrating screen, and the track frame is provided with a circular track arranged downwards; the track is connected with a plurality of rotating shafts which are longitudinally arranged and rotationally arranged, and the plurality of track shafts are arranged at intervals along the circumferential direction of the track; the top of the rotating shaft is movably connected with the track, and the bottom of the rotating shaft extends downwards and is inserted into the waste slurry and residue soil on the vibrating screen;
the periphery of axis of rotation is equipped with stirs the strip, works as drive structure drive shale shaker carries out reciprocating motion and horizontal reciprocating motion's in-process in turn, and is a plurality of the axis of rotation receives the extrusion of the abandonment mud dregs on the shale shaker, along rail-engaging, and rotates simultaneously, so that axis of rotation and stirring strip stir the abandonment mud dregs on the shale shaker.
Compared with the prior artTechnical phase ratio ， The construction method for building the temporary road by using the waste slurry muck comprises the steps of dividing the waste slurry muck into large-particle muck and small-particle muck by a screening mode of carrying out vibration separation on the waste slurry muck, wherein the small-particle muck is used as a main raw material and can be mixed with a curing agent to form solidified soil, the large-particle muck can be directly laid in a construction area to form a roadbed, side templates are arranged on two sides of the roadbed, the side templates can ensure that slurry-shaped solidified soil filled in the enclosed area cannot flow out of the enclosed area, the solidified soil in the enclosed area is solidified, the side templates are pulled out, and the roadbed and the solidified layers form the temporary road, so that the waste slurry muck is effectively recycled, and the purpose of recycling waste materials is achieved.
Drawings
FIG. 1 is a schematic construction diagram of a temporary road constructed by waste slurry and residue soil provided by the invention;
FIG. 2 is a schematic front view of a temporary road provided by the present invention;
FIG. 3 is a cut-away schematic view of a separator tank provided by the present invention;
fig. 4 is a schematic top view of a shaker provided in accordance with the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-4, the preferred embodiment of the present invention is provided.
The invention provides a construction method for building a temporary road by using waste slurry and residue soil, which comprises the following construction steps:
1) Placing the waste slurry muck into a vibrating screen 100 for vibration separation to form large-particle muck on the vibrating screen 100 and small-particle muck penetrating through the vibrating screen 100, and mixing the small-particle muck with a water body to enter a mud pit 200 to form muck slurry;
2) Conveying the muck slurry into a stirrer 300, adding a curing agent into the stirrer 300, and stirring and mixing the curing agent and the muck slurry to form slurry-state cured soil;
3) Conveying the large-particle muck to a construction area for paving to form a roadbed 400 of the temporary road;
4) Placing side templates 401 on two sides of the roadbed 400, wherein the side templates 401 enclose a filling space on the roadbed 400, filling solidified soil into the filling space, and forming a solidified layer 402 on the roadbed 400 after the solidified soil is solidified; the sideforms 401 are removed and the subgrade 400 and cured layer 402 form a temporary road.
According to the construction method for building the temporary road by using the waste slurry muck, the waste slurry muck is divided into large-particle muck and small-particle muck in a screening mode of vibrating separation, the small-particle muck is used as a main raw material and can be mixed with a curing agent to form cured soil, the large-particle muck can be directly paved in a construction area to form a roadbed 400, the side templates 401 are placed on two sides of the roadbed 400, the side templates 401 can prevent the slurry-like cured soil filled in the enclosed area from flowing out of the enclosed area, the cured soil in the enclosed area is solidified, the side templates 401 are pulled out, and the roadbed 400 and the cured layer 402 form the temporary road, so that the waste slurry muck is effectively recycled, and the purpose of recycling waste materials is achieved.
In the step 2), the curing agent comes from a powder tank, the powder tank is provided with an automatic metering system, the curing agent is proportionally conveyed into the stirrer 300 according to the proportion of the formed curing soil, and the powder tank conveys the curing agent into the stirrer 300 through a powder conveying pipe.
In the construction step 1), the waste sludge is excavated by an excavator, and is placed in the charging hopper 500, and is placed on the vibrating screen 100 by the charging hopper 500. The charging hopper 500 has a feed port and a discharge port, and the waste sludge soil is fed into the feed port and falls vertically downward from the discharge port under the action of gravity, so that the waste sludge soil can be completely placed on the vibrating screen 100 by the charging hopper 500.
In the construction step 1), a horizontally arranged and forward-conveying conveyer belt 600 is arranged behind the vibrating screen 100, and the charging hopper 500 is positioned above the conveyer belt 600; when the excavator places the excavated waste sludge in the charging hopper 500, the waste sludge in the charging hopper 500 falls onto the conveyor belt 600 from top to bottom, and is transferred forward to the vibrating screen 100 along with the conveyor belt 600.
The waste sludge in the charging hopper 500 falls onto the conveyor belt 600 due to gravity, the conveyor belt 600 conveys the waste sludge to the vibrating screen 100, and the vibrating screen 100 screens the waste sludge.
The vibrating screen 100 is placed in a separation box 1000, the separation box 1000 is provided with a separation cavity 101 with an open top, and the vibrating screen 100 is arranged in the middle of the separation cavity 101; in the direction from back to front, the vibrating screen 100 is arranged obliquely downwards, and a bottom cavity 102 is formed between the bottom of the separating cavity 101 and the vibrating screen 100;
in the construction step 1), after waste slurry muck is placed on a vibrating screen 100, large-particle muck is placed on the vibrating screen 100 along with the vibration of the vibrating screen 100 and is transmitted to the outside of the vibrating screen 100 to be stacked into a large-particle muck pile; the small particles of muck fall through the vibrating screen 100 into the bottom chamber 102 and mix with the water to form sludge muck, which is transported to the mud pit 200.
Like this, can fall into the big granule dregs that lie in shale shaker 100 and see through shale shaker 100 with abandonment mud dregs, the in-process of shale shaker 100 screening, big granule dregs can not see through shale shaker 100 and down fall owing to radially great, consequently can be sieved and lie in shale shaker 100 on to being transmitted to the outside, little granule dregs can see through shale shaker 100 and can fall into bottom chamber 102, and form mud dregs with water mixture.
The rear end of the vibrating screen 100 is arranged opposite to the charging hopper 500 up and down, and the front end of the vibrating screen 100 is provided with a chute channel 700, and the chute channel 700 is arranged obliquely downwards along the direction from the rear to the front.
In the construction step 1), the large-particle residue soil left on the vibrating screen 100 is discharged to an external accumulation area through the chute 700 for accumulation. Thus, due to the inclined shape of the vibrating screen 100, the large-sized dregs can enter the chute 700 in an inclined shape, then go forward along the extending direction of the chute 700, and finally be discharged to the external accumulation area for accumulation.
A water spray pipe 800 is arranged above the vibrating screen 100, and the water spray pipe 800 is provided with a plurality of water spray heads which are arranged downwards; in the construction step 1), when the waste slurry and residue soil is placed on the vibrating screen 100 for vibration separation, the water is sprayed downwards by the plurality of water spraying heads, and the water washes the waste slurry and residue soil on the vibrating screen 100 from top to bottom and falls into the bottom cavity 102 along with small-particle residue soil.
Thus, water is added through the water spray pipe 800 for screening, under the action of water flow and the vibrating screen 100, large-particle muck is discharged to an external accumulation area due to the fact that the vibrating screen 100 and the chute 700 are inclined, and small-particle muck is mixed with water to form muck.
In the construction step 2), the curing agent is prepared by mixing cement clinker, slag powder, quicklime, flue gas desulfurization gypsum powder and anhydrous sodium sulphate. Therefore, the formed curing agent is different from the traditional cement material, the cement material has good reaction effect with sand, and can be used for preparing concrete with extremely high strength, but the reaction effect of the cement material with mud, muck and soil is much poorer, and the strength is general, so that the mixing effect of the cement material and the waste mud and muck is poorer, the cost of each component forming the curing agent is lower, and compared with the use of the cement material, after the curing agent is used for curing muck mud, the formed cured soil slurry has the characteristics of high hardening speed and high hardening strength, and the road construction by the cured soil slurry becomes possible.
Specifically, in the construction step 2), the curing agent is composed of 25-35% of cement clinker, 40-70% of slag powder, 5-10% of quicklime, 8-15% of flue gas desulfurization gypsum powder and 2-5% of anhydrous sodium sulphate according to the weight percentage. The components of the curing agent are low in cost, and the formed cured layer 402 is high in strength, free of shrinkage, slightly expandable and quick in hardening and solidification time.
Wherein the cement clinker is P.O42.5R type portland cement, the slag powder is S105-grade granulated blast furnace slag powder and is mainly powder ground by water granulated slag, the content of calcium oxide and magnesium oxide in the quick lime is not less than 90 percent, the quick lime has better stability, and the main component of the flue gas desulfurization gypsum powder is calcium sulfate dihydrate;
the solidification principle is that water in the slag mud reacts with the cement clinker to generate gelatinous hydrate such as hydrated calcium silicate, active calcium oxide and silicon dioxide in the slag powder react with the hydrated calcium silicate gel under an alkaline environment, and finally sulfate ions in the gypsum react with the hydrated calcium silicate to generate ettringite. The acicular or columnar crystal ettringite is crossed with each other in the pores to form a space structure together with the hydrated calcium silicate, thereby playing the roles of supporting the pores and reducing the average pore diameter of the pores of the reinforced soil.
After the calcium oxide is added, the calcium oxide can also perform a good chemical reaction, the calcium oxide reacts with water to generate calcium hydroxide, an alkaline environment is provided for slurry, the full reaction of the silicon dioxide in the cement clinker and the slag powder is promoted, then the calcium hydroxide reacts with carbon dioxide in the air to generate calcium carbonate, the calcium carbonate is hard crystals and has high strength and water stability, and in addition, the active silicon-aluminum mineral is dissociated under the alkaline excitation of the calcium oxide and reacts with the calcium hydroxide to generate water-containing calcium silicate and calcium aluminate.
Therefore, after the curing agent and the muck slurry are stirred and mixed, the formed cured soil has the advantages of higher strength, no shrinkage, micro-expansion, quick hardening and solidification time and the like, and compared with a cement material serving as a curing effect, the curing agent has better effect and lower cost.
The vibrating screen 100 is in a disc shape, the vibrating screen 100 is provided with a plurality of screen holes 103, and the plurality of screen holes 103 are distributed over the vibrating screen 100 in an array shape; the bottom of the bottom chamber 102 is provided with a bottom plate 104, the bottom of the bottom plate 104 is movably abutted against the bottom of the bottom chamber 102, and the bottom plate 104 is obliquely arranged in the same direction as the bottom of the bottom chamber 102.
The vibrating screen 100 is connected with a driving structure 105, and the driving structure 105 drives the vibrating screen 100 to alternately perform reciprocating movement back and forth and transverse reciprocating movement; longitudinally disposed connecting strips 106 are connected between the rear end of the shaker 100 and the rear end of the bottom plate 104, the rear end of the chute 700 is connected to the front end of the shaker 100, and the front end of the chute 700 extends to the accumulation area.
A plurality of elastic strips 107 are arranged on the vibrating screen 100, and the elastic strips 107 are arranged along the transverse bending of the vibrating screen 100; the middle part of the elastic strip 107 is fixed on the vibrating screen 100 and is positioned between the adjacent screen holes 103, the two ends of the elastic strip 107 are movably arranged, and the two ends of the elastic strip 107 are bent downwards along the downward inclined direction of the vibrating screen 100.
In the construction step 1), in the process that the driving structure 105 drives the vibrating screen 100 to alternately perform reciprocating movement back and forth and transverse reciprocating movement, the vibrating screen 100 drives the bottom plate 104 to synchronously move through the connecting strip 106, the vibrating screen 100 drives the chute channel 700 to synchronously move, and two ends of the elastic strip 107 synchronously swing back and forth along with the vibrating screen 100 to stir the bottom of the waste mud residue soil on the vibrating screen 100.
In the process that the vibrating screen 100 performs reciprocating movement back and forth and transverse reciprocating movement, the waste mud and dregs vibrate along with the vibrating screen, small-particle dregs in the waste mud and dregs fall into the bottom cavity 102 from the screen holes 103, when the vibrating screen is used, the elastic strips 107 continuously bear inertia force due to the inertia effect, so the elastic strips 107 can sweep and stir the waste mud and dregs on the vibrating screen 100, the small-particle dregs possibly blocked in the screen holes 103 are avoided, the small-particle dregs in the plug holes can be promoted to fall, and in the moving process of the vibrating screen 100, the connecting strips 106 can drive the bottom plate 104 to synchronously move, and the dregs and mud are promoted to flow out of the bottom cavity 102.
A track frame is arranged above the vibrating screen 100, and the track frame is provided with a circular track arranged downwards; a plurality of rotating shafts 111 which are longitudinally and rotationally arranged are connected to the track, and the plurality of track shafts are arranged at intervals along the circumferential direction of the track; the top of the rotating shaft 111 is movably connected with the track, and the bottom of the rotating shaft 111 extends downwards and is inserted into the waste slurry and residue soil on the vibrating screen 100;
the agitating bars 112 are provided on the outer circumference of the rotating shafts 111, and when the driving structure 105 drives the vibration sieve 100 to alternately reciprocate back and forth and laterally reciprocate, the plurality of rotating shafts 111 are pressed by the waste sludge on the vibration sieve 100, move along the rails 110, and simultaneously rotate, so that the rotating shafts 111 and the agitating bars 112 agitate the waste sludge on the vibration sieve 100.
The rotating shaft 111 may move 110 along the track, and as the waste sludge rolls over the vibrating screen 100, the waste sludge rolls over the rotating shaft 111 and the agitating bars 112, the rotating shaft 111 moves 110 along the track while the agitating bars rotate to agitate, so that the agitating bars 112 may break up the waste sludge, causing small particles of sludge to drop through the mesh 103 into the bottom chamber 102.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. The construction method for building the temporary road by using the waste slurry and the waste residue soil is characterized by comprising the following construction steps of:
1) Placing the waste slurry muck into a vibrating screen for vibration separation to form large-particle muck on the vibrating screen and small-particle muck penetrating through the vibrating screen, and mixing the small-particle muck with a water body to enter a mud pit to form muck slurry;
2) Conveying the muck slurry into a stirrer, adding a curing agent into the stirrer, and stirring and mixing the curing agent and the muck slurry to form slurry-state cured soil;
3) Conveying the large-particle muck to a construction area for paving to form a roadbed of the temporary road;
4) Placing side formworks on two sides of the roadbed, wherein the side formworks enclose to form a filling space on the roadbed, filling the solidified soil into the filling space, and forming a solidified layer on the roadbed after the solidified soil is solidified; and removing the side formworks, wherein the roadbed and the solidified layer form a temporary road.
2. The construction method for constructing a temporary road using the waste sludge as claimed in claim 1, wherein in the construction step 1), the waste sludge is excavated by an excavator and placed in a hopper, and the waste sludge is placed on a vibrating screen by the hopper.
3. The construction method for constructing a temporary road by using the waste sludge as claimed in claim 2, wherein in the construction step 1), a horizontally arranged conveyor belt which is conveyed forward is arranged behind the vibrating screen, and the rotating hopper is positioned above the conveyor belt; when the excavator places the excavated waste slurry and residue soil in the rotating hopper, the waste slurry and residue soil in the charging hopper falls on the conveying belt from top to bottom and is conveyed to the vibrating screen forwards along with the conveying belt.
4. The construction method for constructing a temporary road using waste sludge as claimed in claim 1, wherein the vibration sieve is disposed in a separation tank having a separation chamber with an open top, the vibration sieve being disposed at a middle portion of the separation chamber; the vibrating screen is obliquely arranged downwards along the direction from back to front, and a bottom cavity is formed between the bottom of the separation cavity and the vibrating screen;
in the construction step 1), after the waste slurry muck is placed on a vibrating screen, the large-particle muck is placed on the vibrating screen along with the vibration of the vibrating screen, and is transmitted to the outside of the vibrating screen to be piled into a large-particle muck pile; the small-particle muck falls into the bottom cavity through the vibrating screen and is mixed with a water body to form the slurry muck, and the slurry muck is conveyed into the slurry tank.
5. The construction method for constructing a temporary road using waste sludge as claimed in claim 4, wherein the rear end of said vibrating screen is disposed opposite to the charging hopper in the vertical direction, and the front end of said vibrating screen is provided with a chute, and said chute is disposed obliquely downward in the rear-to-front direction;
in the construction step 1), large-particle muck left on the vibrating screen is discharged to an external accumulation area through a chute to be accumulated.
6. The construction method for constructing a temporary road by using the waste sludge as claimed in claim 4, wherein a water spray pipe is provided above the vibration sieve, and the water spray pipe is provided with a plurality of water spray heads arranged downwards; in the construction step 1), when the waste slurry and residue soil is placed on the vibrating screen for vibration separation, the plurality of water spray heads spray out water downwards, and the water washes the waste slurry and residue soil on the vibrating screen from top to bottom and falls into the bottom cavity along with small-particle residue soil.
7. The construction method for constructing a temporary road by using the waste sludge and residue soil as claimed in claim 1, wherein in the construction step 2), the curing agent is prepared by mixing cement clinker, slag powder, quicklime, flue gas desulfurization gypsum powder and anhydrous sodium sulphate.
8. The construction method for constructing a temporary road by using the waste slurry and residue soil as claimed in claim 1, wherein in the construction step 2), the curing agent comprises 25-35% of cement clinker, 40-70% of slag powder, 5-10% of quicklime, 8-15% of flue gas desulfurization gypsum powder and 2-5% of anhydrous sodium sulphate according to the weight percentage.
9. The construction method for constructing a temporary road using waste sludge as claimed in claim 5, wherein the vibration sieve is shaped like a disk, the vibration sieve has a plurality of sieve holes, and the plurality of sieve holes are arranged in an array over the vibration sieve; the bottom of the bottom cavity is provided with a bottom plate, the bottom of the bottom plate is movably abutted against the bottom of the bottom cavity, and the bottom plate and the bottom of the bottom cavity are obliquely arranged in the same direction;
the vibrating screen is connected with a driving structure, and the driving structure drives the vibrating screen to alternately perform front-back reciprocating movement and transverse reciprocating movement; a connecting strip which is longitudinally arranged is connected between the rear end of the vibrating screen and the rear end of the bottom plate, the rear end of the chute channel is connected with the front end of the vibrating screen, and the front end of the chute channel extends to a stacking area;
a plurality of elastic strips are arranged on the vibrating screen and are arranged along the transverse bending of the vibrating screen; the middle part of the elastic strip is fixed on the vibrating screen and positioned between adjacent screen holes, two ends of the elastic strip are movably arranged and are arranged in a downward inclined direction along the vibrating screen, and two ends of the elastic strip are arranged in a downward bending way;
in the construction step 1), the driving structure drives the vibrating screen to alternately perform front-back reciprocating movement and transverse reciprocating movement, the vibrating screen drives the bottom plate to synchronously move through the connecting strip, the vibrating screen drives the chute channel to synchronously move, and the two ends of the elastic strip synchronously swing back and forth along with the vibrating screen to stir the bottom of waste mud and residue soil on the vibrating screen.
10. The construction method of a temporary road using waste sludge soil as set forth in any one of claims 1 to 9, wherein a rail frame having a circular rail disposed downward is provided above the vibration sieve; the track is connected with a plurality of rotating shafts which are longitudinally arranged and rotationally arranged, and the plurality of track shafts are arranged at intervals along the circumferential direction of the track; the top of the rotating shaft is movably connected with the track, and the bottom of the rotating shaft extends downwards to be inserted into waste slurry and residue soil on the vibrating screen;
the periphery of axis of rotation is equipped with stirs the strip, works as drive structure drive shale shaker carries out reciprocating motion and transverse reciprocating motion's in-process around in turn, and is a plurality of the axis of rotation receives the extrusion of the abandonment mud dregs on the shale shaker, along rail-bound removal, and rotates simultaneously, so that axis of rotation and stirring strip stir the abandonment mud dregs on the shale shaker.
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| CN202211422401.7A CN115897314A (en) | 2022-11-14 | 2022-11-14 | Construction method for building temporary road by using waste slurry and residue soil |
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| CN202211422401.7A CN115897314A (en) | 2022-11-14 | 2022-11-14 | Construction method for building temporary road by using waste slurry and residue soil |
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