CN115010421A - Light roadbed filler and structure and processing device thereof - Google Patents

Light roadbed filler and structure and processing device thereof Download PDF

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Publication number
CN115010421A
CN115010421A CN202210757659.6A CN202210757659A CN115010421A CN 115010421 A CN115010421 A CN 115010421A CN 202210757659 A CN202210757659 A CN 202210757659A CN 115010421 A CN115010421 A CN 115010421A
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China
Prior art keywords
alkaline residue
light
roadbed
roadbed filler
hot air
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CN202210757659.6A
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Chinese (zh)
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CN115010421B (en
Inventor
赵晓晴
梁腾
于志龙
沈爱国
许传赓
曾强忠
付秀艳
岳志才
李桂花
邵剑涛
蒋耳龙
宗钟凌
李家伟
陈丽
殷江昊
王文斌
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Lianyungang Jujiang Construction Engineering Co ltd
Lianyungang Railway Development Center
Marine Resources Development Institute Of Jiangsu (lianyungang)
Jiangsu Ocean University
Third Engineering Co Ltd of Highway Engineering Bureau of CCCC
Original Assignee
Lianyungang Jujiang Construction Engineering Co ltd
Lianyungang Railway Development Center
Marine Resources Development Institute Of Jiangsu (lianyungang)
Jiangsu Ocean University
Third Engineering Co Ltd of Highway Engineering Bureau of CCCC
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Application filed by Lianyungang Jujiang Construction Engineering Co ltd, Lianyungang Railway Development Center, Marine Resources Development Institute Of Jiangsu (lianyungang), Jiangsu Ocean University, Third Engineering Co Ltd of Highway Engineering Bureau of CCCC filed Critical Lianyungang Jujiang Construction Engineering Co ltd
Priority to CN202210757659.6A priority Critical patent/CN115010421B/en
Publication of CN115010421A publication Critical patent/CN115010421A/en
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Publication of CN115010421B publication Critical patent/CN115010421B/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • 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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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to the technical field of road infrastructure construction, and particularly discloses a light roadbed filler, a structure thereof and a processing device, wherein the light roadbed filler comprises the following components in parts by weight: 50-70 parts of caustic sludge, 20-30 parts of calcium-enriched ash, 10-20 parts of soft soil, 2-6 parts of cement and 4-8 parts of lime; the filler structure comprises a light roadbed filler layer arranged on the ground, wherein a pavement structure is arranged on the upper surface of the light roadbed filler layer, a vertical permeation and drainage channel is arranged in the light roadbed filler layer, a permeation and drainage layer is arranged between the ground and the light roadbed filler layer, and side drainage ditches are arranged on the ground at two sides of the light roadbed filler layer; the processing device comprises an alkaline residue discharging mechanism, an alkaline residue drying mechanism and an alkaline residue conveying mechanism; the light roadbed filler disclosed by the invention effectively utilizes the alkali residue and the calcium-increasing ash solid waste material as resources, and the light roadbed filler is used for the roadbed filler to effectively reduce the self weight of the roadbed filler and save the construction cost.

Description

Light roadbed filler and structure and processing device thereof
Technical Field
The invention relates to the technical field of road infrastructure construction, and particularly discloses a light roadbed filler, a structure thereof and a processing device.
Background
The roadbed is the foundation of the road surface and is the load-bearing main body of the road, and is mainly used for bearing the driving load transmitted by the road surface and the self weight of the roadbed and the road surface structure and diffusing the load to the foundation. The strength and stability of the roadbed are important guarantees that the road can normally operate, and the selection of roadbed filling has a decisive effect on the strength and stability of the roadbed. When the roadbed filling is not properly selected, diseases such as settlement, slope collapse and the like can be generated under the action of natural environment factors and driving loads, so that cracks and uneven settlement are formed on the road surface, and the driving safety and comfort are affected. The light-density high-strength roadbed filling can effectively reduce the self weight of the roadbed filling, reduce the additional stress on the foundation caused by the self weight, reduce the uneven settlement after construction and improve the stability of the roadbed structure.
With the development of green ecology and environmental safety concepts in recent years, the resource development and utilization degree of bulk industrial wastes is continuously improved. At present, the application technology of industrial wastes such as fly ash, furnace slag, tailings and the like in road engineering is improved day by day, and the application of alkaline residue and calcium-enriched ash serving as industrial waste residue in roads is very little. The alkaline residue and calcium-enriched ash are industrial waste residue produced in the process of producing soda ash by using ammonia-soda process, and the alkaline residue is outsideThe soil is white in appearance, the main chemical components are calcium carbonate, calcium sulfate, oxides such as iron, aluminum, silicon and the like, the soil is mainly powdery particles, has developed pores, high water absorption and high chloride ion content, but has light weight and can be mixed with materials such as cement, lime and the like to form engineering soil with better property; the calcium-increasing ash is fine particles, has black appearance, and contains SiO as chemical component 2 、Al 2 O 3 The active oxides are mainly the same as the fly ash in property, but the activity of the active oxides is poorer than that of the fly ash, and the utilization rate of the active oxides is lower.
For example, the invention patent with the application number of CN104310890A discloses an alkali residue foundation roadbed filling material, the invention patent with the application number of CN111648184A discloses a construction method for filling an alkali residue soil into a roadbed, and the invention patent with the application number of CN104310893A discloses an alkali residue foundation building filling material. However, the invention patents do not use the alkaline residue soil formed by mixing two kinds of waste residues of alkaline residue and calcium-increasing ash with other materials for the roadbed, and the study on the lightweight property of the alkaline residue soil roadbed and how to ensure that the alkaline residue soil roadbed is free from water damage during the application in a road structure to maintain the stability are lacked. In patent CN212335688U, although a relevant water-proof and drainage measure is made for the alkaline residue soil roadbed, the waterproof bonding layer of the alkaline residue soil roadbed has more material consumption and larger construction difficulty. In addition, when the alkali slag is used as a main material for preparing the light roadbed filler, the water content of the light roadbed filler needs to be controlled, and the traditional method for controlling the water content of the alkali slag is drying in the sun, so that the drying speed of the alkali slag is slow, and the water content of the alkali slag cannot be accurately controlled. Therefore, to the current lack to the not enough in research of alkaline residue soil road bed lightweight and the material preparation process, this application has proposed a lightweight road bed filler and structure, processingequipment thereof.
Disclosure of Invention
The invention aims to design a light roadbed filling material, a structure and a processing device thereof aiming at the defects of the lack of study on the light weight of an alkaline residue soil roadbed and the defects of the preparation process of materials.
The invention is realized by the following technical scheme:
a light roadbed filler comprises the following components in parts by weight: 50-70 parts of caustic sludge, 20-30 parts of calcium-enriched ash, 10-20 parts of soft soil, 2-6 parts of cement and 4-8 parts of lime.
Preferably, the cement strength is 42.5 grade, and the lime grade is not lower than the standard of third grade lime.
Preferably, the water content of the caustic sludge is controlled to be 12-16% through a processing device.
The invention adopts the caustic sludge as the main raw material, and as the surface of the caustic sludge particles is rough and the pores are numerous, flocculent aggregates are formed by the interaction between the caustic sludge particles and the particles, aggregates are formed by the cementation between the aggregates, the close connection between the aggregates is helpful for forming the strength, the cement and the lime mainly play a role in gelation, and a large amount of Ca (OH) is generated during the hydration of the cement and the hydration of the lime 2 The active oxides in the soft soil and the alkaline residue are subjected to pozzolanic reaction under the action of water to generate calcium silicate hydrate and calcium aluminate hydrate, and the gelled substances have a cementing effect among the mixture particles.
Wherein, the activity of the calcium-increasing ash is lower, and the effects of filling and compacting and increasing mechanical occlusion are mainly played in the mixing. Although the water content of alkaline residue self is high, but carry out the moisture content that can effectively reduce in the alkaline residue through processingequipment to it, also can absorb some moisture in the alkaline residue after adding calcium ash and alkaline residue mix, can make the alkaline residue reach the optimum moisture content state, near the optimum moisture content easily with alkaline residue mixture compaction shaping. The density of the mixture after compaction forming is 1000Kg/m 3 ～1300Kg/m 3 Compared with the common soil roadbed filling material, the soil roadbed filling material is lighter by 20-40%, can effectively reduce the self weight of the roadbed, and reduces the problems of roadbed settlement and side slope instability caused by the self weight effect of the roadbed. The light-weight and good-strength concrete has good strength characteristics, the 7d compressive strength of the concrete is 1.45-2.41 MPa, the 28d compressive strength of the concrete is 2.17-3.49 MPa, and the requirement on the strength of roadbed materials can be met; the 7d shear strength is 209.88 Kpa-395.02 Kpa under the vertical pressure of 100 Kpa; 318.53 Kpa-431.64 Kpa under the vertical pressure of 200 Kpa; 384.54 Kpa-544.5 Kpa under the vertical pressure of 300 Kpa; 428.50 Kpa-706.86 Kpa under the vertical pressure of 400 Kpa; the alkaline residue soil can ensure the stability of the side slope.
The invention also discloses a structure of the light roadbed packing, which comprises a light roadbed packing layer arranged on the ground, wherein the upper surface of the light roadbed packing layer is provided with a pavement structure, the light roadbed packing layer is internally provided with a vertical permeation and drainage channel, a permeation and drainage layer is arranged between the ground and the light roadbed packing layer, and side drainage ditches are arranged on the ground at two sides of the light roadbed packing layer.
The light roadbed filling material structure designed by the invention mainly uses the alkaline residue as a main material, the dosage is large, and the alkaline residue has strong hydrophilicity and large water absorption. Capillary permeation of underground water in the roadbed when the alkali residue mixture is used as roadbed filling and side slope permeation during rainfall can cause continuous water absorption of alkali residue in the alkali residue mixture, so that the roadbed strength is reduced to cause instability damage, and diseases such as roadbed subsidence, side slope collapse and the like are formed.
In order to ensure that the alkali slag roadbed can have stable working performance and avoid being corroded and damaged by the penetrating water, a penetrating and draining layer of 2-5 cm is arranged between the bottom of the alkali slag roadbed and an original road groove, the draining layer is mainly permeable fine aggregate, and capillary penetration of underground water can be effectively prevented; the vertical permeable drainage channel is vertically arranged and connected with a bottom permeable drainage layer, a side slope is permeated and the pavement structure is permeated and collected to the drainage layer at the bottom to be discharged out of the roadbed, the vertical permeable drainage channel can be arranged at intervals of 20-100 meters according to local precipitation, the diameter is 5-15 cm, and the drainage channel is filled with permeable fine aggregate.
The invention also discloses a processing device for the light roadbed filler, which is used for drying the alkaline residue and comprises an alkaline residue discharging mechanism, an alkaline residue drying mechanism and an alkaline residue transmission mechanism, wherein the alkaline residue transmission mechanism penetrates through the alkaline residue drying mechanism from left to right, and is arranged right above one end of the alkaline residue transmission mechanism;
the alkaline residue discharging mechanism comprises a stock bin and a feeding barrel, the lower end of the stock bin is connected with the upper surface of one end of the feeding barrel, the feeding barrel is arranged perpendicular to the conveying direction of the alkaline residue conveying mechanism, an auger blade is arranged in the feeding barrel, a driving motor for driving the auger blade to rotate is arranged on one end surface of the feeding barrel, discharging hoppers are arranged on the front and back of the lower surface of the feeding barrel at intervals, and the lower end of each discharging hopper is connected with a discharging pipe arranged right above the end part of the alkaline residue conveying mechanism;
the alkaline residue drying mechanism comprises a machine base and a drying cover, wherein the drying cover is fixedly arranged on the upper surface of the machine base, conveying ports are formed in the left end surface and the right end surface of the drying cover, an arc-shaped cover is arranged in the middle section of the drying cover, a material turning motor is arranged on the front end surface of the arc-shaped cover, the end part, extending into the inner cavity of the arc-shaped cover, of an output shaft of the material turning motor is connected with a fan-shaped shovel hopper, baffles are arranged at the front end and the rear end of the fan-shaped shovel hopper, an arc-shaped guide plate is connected with the lower end of the fan-shaped shovel hopper, the lower end of the arc-shaped guide plate is connected with the inner wall of the fan-shaped shovel hopper, and the upper end of the arc-shaped guide plate is inwards concave towards the circle center of the fan-shaped shovel hopper and is suspended;
a material scraping plate is arranged in a drying cover close to one side of the alkaline residue blanking mechanism, a portal frame is fixed on the upper surface of the drying cover positioned right above the material scraping plate, a telescopic device is installed on the portal frame, the lower end of a piston rod of the telescopic device extends into the drying cover and is connected with the material scraping plate, a support plate is fixed on the rear side surface of the machine base, a first hot air blower and a second hot air blower are arranged on the upper surface of the support plate, a first hot air guide pipe and a second hot air guide pipe are respectively connected onto the first hot air blower and the second hot air blower, the first hot air guide pipe and the second hot air guide pipe are distributed on the left side and the right side of the arc-shaped cover, and a plurality of exhaust pipes extending into the drying cover are connected to the lower surfaces of the first hot air guide pipe and the second hot air guide pipe at intervals;
the caustic sludge conveying mechanism comprises a U-shaped conveying seat which runs through the conveying openings along the drying cover, conveying rollers are arranged at two ends of the U-shaped conveying seat, a conveying motor and a conveying belt are connected to the end portion of one conveying roller, a large number of meshes are formed in the conveying belt, the upper surface of the conveying belt is fitted with a fan-shaped shovel hopper, the conveying belt is located a slag removing mechanism is further arranged in the U-shaped conveying seat below the conveying belt, and the slag removing mechanism is kept away from the U-shaped conveying seat below one side of the caustic sludge blanking mechanism and is provided with a material receiving box.
As a further setting of the above scheme, the slag removing mechanism comprises a scraping plate attached to the bottom wall of the U-shaped transmission seat, a rack arranged along the conveying direction of the conveying belt is connected to the scraping plate, a slag removing motor is arranged on the lower surface of the U-shaped transmission seat, and the end part of an output shaft of the slag removing motor extending into the U-shaped transmission seat is connected with a driving gear meshed with the rack.
As a further arrangement of the scheme, a slag removing opening is formed in the lower surface of the U-shaped transmission seat close to one side of the material receiving box, and a material guide plate is arranged on the lower surface of the U-shaped transmission seat at the slag removing opening.
As a further arrangement of the scheme, 3-5 blanking hoppers are arranged on the lower surface of the feeding barrel, and the blanking hoppers are arranged at equal intervals in the front and back direction.
As a further arrangement of the scheme, the lower surface of the base is also provided with a plurality of shock absorption support legs, and the front side surface of the base is provided with a control box.
As a further arrangement of the scheme, the alkaline residue blanking mechanism further comprises a vertical frame, the blanking hopper is fixedly arranged at the upper end of the vertical frame, and a balancing weight is further arranged at the lower end of the vertical frame.
Has the advantages that:
1) the light roadbed filling material disclosed by the invention can effectively utilize the alkali residue and the calcium-enriched ash solid waste material as resources, reduces the harm of the solid waste material to the ecological environment and the economic development, and the alkali residue soil formed by taking the alkali residue as the main mixture has light weight, so that the light roadbed filling material can effectively reduce the self weight of the roadbed filling material and save the construction cost when being used for the roadbed filling material.
2) The roadbed seepage drainage structure can ensure that the alkaline residue soil roadbed is prevented from being corroded by water, and has stable working performance.
3) The processing device designed by the invention is used for controlling the moisture of the caustic sludge, the discharged caustic sludge is dried by a conveyor belt in a streamlined operation, the caustic sludge is firstly sent to the drying process to be dried for the first time on the surface, after the first drying is finished, the caustic sludge is shoveled and overturned by the rotation process of the fan-shaped shoveling hopper, so that the lower-layer caustic sludge is overturned to the upper surface, and the overturned caustic sludge is dried by hot air for the second time in the subsequent transmission process, so that the drying efficiency of the caustic sludge is greatly improved, the caustic sludge is dried more uniformly, and the water content of the caustic sludge can be accurately controlled.
4) The processing device is also provided with a slag removing mechanism at the lower end of the U-shaped transmission seat, alkaline residues penetrating through meshes on the conveying belt can be accumulated in the long-time drying process, and the scraping plate can be pushed to horizontally move under the meshing transmission of the gear and the rack through the driving of the control motor, so that the accumulated alkaline residues are pushed out and fall into the material receiving box to be mixed with the dried alkaline residues, the cleanness of the whole processing device is ensured, and the waste of small-particle alkaline residues is prevented.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the structure of the light roadbed filling according to the present invention;
FIG. 2 is a schematic view of a first angular perspective of the processing apparatus of the present invention;
FIG. 3 is a schematic view of a second angular perspective of the processing apparatus of the present invention;
FIG. 4 is a schematic perspective view of the basic slag adding and blanking mechanism according to the present invention;
FIG. 5 is a schematic view of the internal plane structure of the alkali slag adding and blanking mechanism of the present invention;
FIG. 6 is a schematic view of the internal plane structure of the caustic sludge drying mechanism and the caustic sludge conveying mechanism in the present invention;
FIG. 7 is a schematic perspective view of a sector shovel hopper according to the present invention;
FIG. 8 is a schematic perspective view of a scraping plate, a portal frame and a telescopic device according to the present invention;
FIG. 9 is a schematic perspective view of an alkaline residue conveying mechanism and a residue removing mechanism according to the present invention;
fig. 10 is a schematic perspective view of the caustic sludge conveying mechanism according to the present invention.
Wherein:
101-light roadbed packing layer, 102-pavement structure, 103-permeable drainage channel, 104-permeable drainage layer and 105-side drainage ditch;
200-alkaline residue blanking mechanism, 201-stock bin, 202-feeding barrel, 203-auger blade, 204-driving motor, 205-blanking hopper, 206-vertical frame, 207-counterweight block;
300-alkaline residue drying mechanism, 301-machine base, 302-drying cover, 303-arc cover, 304-stirring motor, 305-fan-shaped shovel hopper, 3051-baffle, 3052-arc guide plate, 306-scraping plate, 307-portal frame, 308-telescopic device, 309-support plate, 310-first hot air blower, 311-second hot air blower, 312-first hot air guide pipe, 313-second hot air guide pipe, 314-exhaust pipe, 315-shock absorption support leg and 316-control box;
400-an alkaline residue transmission mechanism, 401-U-shaped transmission seats, 402-transmission rollers, 403-a transmission belt, 4031-meshes, 404-a transmission motor, 405-a residue removal port and 406-a material guide plate;
500-a slag removing mechanism, 501-a scraping plate, 502-a rack, 503-a slag removing motor and 504-a driving gear;
600-material receiving box.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail with reference to the accompanying drawings 1 to 10, in conjunction with the embodiments.
Example 1
Embodiment 1 discloses a light roadbed filler, which comprises the following components in parts by weight: 50-70 parts of caustic sludge, 20-30 parts of calcium-enriched ash, 10-20 parts of soft soil, 2-6 parts of cement and 4-8 parts of lime.
Wherein the cement strength is 42.5 grade, the ash grade is not lower than the standard of three-grade lime, and the water content of the caustic sludge is controlled to be 12-16% through a processing device.
Specifically, the light roadbed filling material comprises 65kg of caustic sludge, 22kg of calcium-enriched ash, 16g of soft soil, 4.4kg of cement and 5.6kg of cement, and the water content of the caustic sludge is controlled to be 15% after drying.
The density of the mixture of the light roadbed filling after compaction molding is 1265Kg/m 3 And compared with the common soil roadbed filling material, the soil roadbed filling material is lighter by 33 percent, can effectively reduce the self weight of the roadbed, and reduces the problems of roadbed settlement and slope instability caused by the self weight effect of the roadbed. The light-weight and good strength characteristic is achieved, the 7d compressive strength is 2.22Mpa, the 28d compressive strength is 3.42Mpa, and the strength requirement of a roadbed material can be met; its 7d shear strength is 356.7Kpa at a vertical pressure of 100 Kpa; 406.3Kpa at a vertical pressure of 200 Kpa; 512.9Kpa at a vertical pressure of 300 Kpa; 663.86Kpa at a vertical pressure of 400 Kpa; the alkaline residue soil can ensure the stability of the side slope.
Example 2
Embodiment 2 discloses a structure of a light roadbed filler, please refer to fig. 1, which includes a light roadbed filler layer 101 disposed on the ground, a pavement structure 102 disposed on the upper surface of the light roadbed filler layer 101, a vertical permeation and drainage channel 103 disposed in the light roadbed filler layer 101, a permeation and drainage layer 104 disposed between the ground and the light roadbed filler layer 101, and a side drainage ditch 105 disposed on the ground at both sides of the light roadbed filler layer 101.
Capillary permeation of groundwater in the roadbed and side slope permeation during rainfall when the alkaline residue mixture of this embodiment 2 is used as roadbed filler can make the alkaline residue in the alkaline residue mixture continuously absorb water, cause the roadbed intensity reduction to lead to destabilization damage, form diseases such as roadbed subsidence, side slope collapse. In order to ensure that the alkali slag roadbed can have stable working performance and avoid being corroded and damaged by the penetrating water, a penetrating and draining layer of 2-5 cm is arranged between the bottom of the alkali slag roadbed and an original road groove, the draining layer is mainly permeable fine aggregate, and capillary penetration of underground water can be effectively prevented; the vertical permeable drainage channel is vertically arranged and connected with a bottom permeable drainage layer, a side slope is permeated and the pavement structure is permeated and collected to the drainage layer at the bottom to be discharged out of the roadbed, the vertical permeable drainage channel can be arranged at intervals of 20-100 meters according to local precipitation, the diameter is 5-15 cm, and the drainage channel is filled with permeable fine aggregate.
Example 3
Embodiment 3 discloses a processingequipment that is arranged in light roadbed filler alkali sediment to handle, refers to fig. 2 and fig. 3, and this processingequipment is used for the stoving of alkali sediment, and it includes alkali sediment unloading mechanism 200, alkali sediment stoving mechanism 300 and alkali sediment transmission mechanism 400, and the setting of the mechanism 300 of drying of penetrating the alkali sediment about the alkali sediment transmission mechanism 400, and alkali sediment unloading mechanism 200 sets up directly over the one end of alkali sediment transmission mechanism 400.
Referring to fig. 4 and 5, the alkaline residue discharging mechanism 200 includes a bin 201 and a feeding barrel 202, the lower end of the bin 201 is connected with the upper surface of one end of the feeding barrel 202, and the feeding barrel 202 is perpendicular to the conveying direction of the alkaline residue conveying mechanism 400, an auger blade 203 is arranged inside the feeding barrel 202, a driving motor 204 for driving the auger blade 203 to rotate is arranged on one end surface of the feeding barrel 202, a discharging hopper 205 is arranged on the lower surface of the feeding barrel 202 at the front and back intervals, and the lower end of the discharging hopper 205 is connected with a discharging pipe arranged right above the end of the alkaline residue conveying mechanism 400. When the feeding device is specifically arranged, 3-5 lower hoppers 205 are arranged on the lower surface of the feeding barrel 202, and the lower hoppers 205 are arranged at equal intervals in front and at the back. In addition, the alkaline residue blanking mechanism 200 further comprises a vertical frame 206, the blanking hopper 205 is fixedly arranged at the upper end of the vertical frame 206, and the lower end of the vertical frame 206 is further provided with a balancing weight 207. By controlling the start and stop of the driving motor 204, the auger blade 203 is driven to rotate in the feeding cylinder 202, so that the caustic sludge in the storage bin 201 is discharged from the discharging hopper 205 and falls on the caustic sludge conveying mechanism 400.
Referring to fig. 2, fig. 3, fig. 6 and fig. 7, the caustic sludge drying mechanism 300 includes a base 301 and a drying cover 302, wherein the drying cover 302 is fixedly installed on the upper surface of the base 301, and the left and right end surfaces of the drying cover 302 are both provided with conveying ports. Be provided with arc cover 303 at the interlude of stoving cover 302, the preceding terminal surface of arc cover 303 is provided with stirring motor 304, the end connection that the output shaft of stirring motor 304 stretched into arc cover 303 inner chamber has fan-shaped shovel hopper 305, the front and back end of this fan-shaped shovel hopper 305 is provided with baffle 3051, the lower extreme of fan-shaped shovel hopper 305 is connected with arc stock guide 3052, the lower extreme of arc stock guide 3052 is connected with fan-shaped shovel hopper 305's inner wall, the upper end is to fan-shaped shovel hopper 305's centre of a circle department indent and unsettled setting. The fan-shaped shovel hopper 305 is controlled by the material turning motor 304 to turn over for a circle, so that the alkaline residues on the alkaline residue conveying mechanism 400 can be shoveled and turned over and then fall on the alkaline residue conveying mechanism 400 again for conveying.
Referring to fig. 6 and 8, a scraping plate 306 is disposed in the drying cover 302 near one side of the caustic sludge blanking mechanism 200, a portal frame 307 is fixed on the upper surface of the drying cover 302 right above the scraping plate 306, a telescopic device 308 is mounted on the portal frame 307, the telescopic device can be an air cylinder or a hydraulic cylinder, and the lower end of a piston rod of the telescopic device 308 extends into the drying cover 302 and is connected with the scraping plate 306. The scraping plate 306 is pushed downwards by the telescopic device 308 to be in contact with the caustic sludge conveying mechanism 400, so that caustic sludge can be uniformly spread by the scraping plate 306 in the subsequent conveying process, and uniform drying is facilitated.
A support plate 309 is fixed on the rear side surface of the base 301, a first hot air blower 310 and a second hot air blower 311 are arranged on the upper surface of the support plate 309, a first hot air duct 312 and a second hot air duct 313 are respectively connected to the first hot air blower 310 and the second hot air blower 311, the first hot air duct 312 and the second hot air duct 313 are distributed on the left side and the right side of the arc-shaped cover 303, and a plurality of exhaust pipes 314 extending into the drying cover 302 are connected to the lower surfaces of the first hot air duct 312 and the second hot air duct 313 at intervals. The above-mentioned hot-blast upper strata to the alkaline residue that sends out through first air heater 310 carries out primary drying, then the upset back of fan-shaped shovel hopper 305 of alkaline residue, and second air heater 311 carries out secondary drying through the upper strata after the upset of the hot-blast alkaline residue that sends into to effectively guarantee to the drying of alkaline residue even. In addition, a plurality of shock absorbing legs 315 are further provided on the lower surface of the base 301, and a control box 316 is provided on the front side surface of the base 301.
Referring to fig. 9 and 10, the caustic sludge transfer mechanism 400 includes a U-shaped transfer base 401 disposed through two transfer ports of the drying hood 302, transfer rollers 402 are disposed at two ends of the U-shaped transfer base 401, one transfer roller 402 is connected to a transfer motor 404, a transfer belt 403 is disposed between the two transfer rollers 402, a large number of meshes 4031 are disposed on the transfer belt 403, and an upper surface of the transfer belt 403 is attached to the fan-shaped shovel hopper 305.
A slag cleaning mechanism 500 is arranged in the U-shaped transmission seat 401 below the conveyor belt 403, and a material receiving box 600 is arranged below the U-shaped transmission seat 401 at one side far away from the alkaline residue blanking mechanism 200. Specifically, the slag removing mechanism 500 comprises a scraping plate 501 attached to the bottom wall of the U-shaped transmission seat 401, a rack 502 arranged along the conveying direction of the conveyor belt 403 is connected to the scraping plate 501, a slag removing motor 503 is arranged on the lower surface of the U-shaped transmission seat 401, and an end of an output shaft of the slag removing motor 503 extending into the U-shaped transmission seat 401 is connected with a driving gear 504 meshed with the rack 502. In addition, a slag removing opening 405 is formed in the lower surface of the U-shaped conveying seat 401 close to one side of the material receiving box 600, and a material guide plate 406 is arranged on the lower surface of the U-shaped conveying seat 401 at the slag removing opening 405.
Its alkaline residue that sees through mesh on the conveyer belt 403 can produce and pile up in long-time stoving in-process, through control motor drive this moment, then can promote scraping flitch 501 horizontal migration under the meshing transmission of gear and rack to push out piled up alkaline residue and fall and mix with the alkaline residue after the drying in connecing workbin 600, its cleanliness factor that has guaranteed whole processing equipment prevents the waste of tiny particle alkaline residue.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a structure of light roadbed filler, its characterized in that, is including setting up light roadbed filler layer (101) subaerial, the upper surface of light roadbed filler layer (101) is provided with road surface structure (102), be provided with vertical infiltration drainage channel (103) in light roadbed filler layer (101), and be provided with between ground and light roadbed filler layer (101) and permeate drainage blanket (104), be located side escape canal (105) have been seted up subaerially to light roadbed filler layer (101) both sides.
2. The processing device for the light roadbed filler is characterized by being used for drying alkaline residues and comprising an alkaline residue discharging mechanism (200), an alkaline residue drying mechanism (300) and an alkaline residue transmission mechanism (400), wherein the alkaline residue transmission mechanism (400) penetrates through the alkaline residue drying mechanism (300) from left to right, and the alkaline residue discharging mechanism (200) is arranged right above one end of the alkaline residue transmission mechanism (400);
the alkaline residue blanking mechanism (200) comprises a stock bin (201) and a feeding barrel (202), the lower end of the stock bin (201) is connected with the upper surface of one end of the feeding barrel (202), the feeding barrel (202) is perpendicular to the conveying direction of the alkaline residue conveying mechanism (400), an auger blade (203) is arranged inside the feeding barrel (202), a driving motor (204) used for driving the auger blade (203) to rotate is arranged on one end surface of the feeding barrel (202), blanking hoppers (205) are arranged on the lower surface of the feeding barrel (202) at front and back intervals, and the lower end of each blanking hopper (205) is connected with a blanking pipe arranged right above the end part of the alkaline residue conveying mechanism (400);
alkali slag stoving mechanism (300) include frame (301) and stoving cover (302), stoving cover (302) fixed mounting is at the upper surface of frame (301), the transport mouth has all been seted up to both ends face about stoving cover (302), the interlude of stoving cover (302) is provided with arc cover (303), the preceding terminal surface of arc cover (303) is provided with stirring motor (304), the end connection that the output shaft of stirring motor (304) stretched into arc cover (303) inner chamber has fan-shaped shovel hopper (305), the front and back end of fan-shaped shovel hopper (305) is provided with baffle (3051), the lower extreme of fan-shaped shovel hopper (305) is connected with arc guide plate (3052), the lower extreme of arc guide plate (3052) is connected with the inner wall of fan-shaped shovel hopper (305), and the upper end is to the centre of a circle department indent and unsettled setting of fan-shaped shovel hopper (305).
3. The apparatus for processing a lightweight roadbed filling according to claim 2, wherein;
a scraping plate (306) is arranged in a drying cover (302) close to one side of the alkaline residue blanking mechanism (200), a portal frame (307) is fixed on the upper surface of the drying cover (302) over the scraping plate (306), a telescopic device (308) is installed on the portal frame (307), the lower end of a piston rod of the telescopic device (308) extends into the drying cover (302) and is connected with the scraping plate (306), a support plate (309) is fixed on the rear side surface of the base (301), a first hot air fan (310) and a second hot air fan (311) are arranged on the upper surface of the support plate (309), a first hot air guide pipe (312) and a second hot air guide pipe (313) are connected to the first hot air fan (310) and the second hot air fan (311) respectively, the first hot air guide pipe (312) and the second hot air guide pipe (313) are distributed on the left side and the right side of the arc-shaped cover (303), and a plurality of extending-in extending-into the lower surfaces of the first hot air guide pipe (312) and the second hot air guide pipe (313) are connected at intervals An exhaust duct (314) in the drying hood (302);
alkali slag transmission device (400) include along drying cover (302) go up two delivery ports and run through U type transmission seat (401) that set up, the both ends of U type transmission seat (401) are provided with transfer roller (402), and the end connection of one of them transfer roller (402) has conveying motor (404), two be provided with conveyer belt (403) between transfer roller (402), a large amount of mesh (4031) have been seted up on conveyer belt (403), and the upper surface of conveyer belt (403) and the setting of laminating mutually of fan-shaped shovel hopper (305), are located still be provided with in U type transmission seat (401) of conveyer belt (403) below and clear sediment mechanism (500), keep away from U type transmission seat (401) below of alkali slag unloading mechanism (200) one side is provided with and connects workbin (600).
4. The processing device of the lightweight roadbed filling material according to claim 3,
the slag removing mechanism (500) comprises a scraping plate (501) attached to the bottom wall of the U-shaped transmission seat (401), a rack (502) arranged along the conveying direction of the conveying belt (403) is connected to the scraping plate (501), a slag removing motor (503) is arranged on the lower surface of the U-shaped transmission seat (401), and a driving gear (504) meshed with the rack (502) is connected to the end, extending into the U-shaped transmission seat (401), of an output shaft of the slag removing motor (503);
a slag removal opening (405) is formed in the lower surface of the U-shaped transmission seat (401) close to one side of the material receiving box (600), and a material guide plate (406) is arranged on the lower surface of the U-shaped transmission seat (401) at the slag removal opening (405).
5. The processing device of the light roadbed filling material according to claim 4, wherein the number of the lower hoppers (205) arranged on the lower surface of the feeding cylinder (202) is 3-5, and the lower hoppers (205) are arranged at equal intervals in front and back.
6. The processing device of the light roadbed filling material as claimed in claim 5, wherein the lower surface of the machine base (301) is further provided with a plurality of shock absorption support legs (315), and the front side surface of the machine base (301) is provided with a control box (316).
7. The processing device of the light roadbed filling according to claim 6, wherein the caustic sludge blanking mechanism (200) further comprises a vertical frame (206), the blanking hopper (205) is fixedly arranged at the upper end of the vertical frame (206), and a counterweight (207) is further arranged at the lower end of the vertical frame (206).
8. A light weight roadbed filler structure as claimed in claim 1, wherein said light weight roadbed filler includes the following components in weight fraction: 50-70 parts of caustic sludge, 20-30 parts of calcium-enriched ash, 10-20 parts of soft soil, 2-6 parts of cement and 4-8 parts of lime.
9. A lightweight roadbed filling structure according to claim 8, wherein the cement strength is 42.5 grade, and the lime grade is not less than the standard of three-grade lime.
10. A light weight roadbed filling structure according to claim 1, wherein the caustic sludge is dried by the processing device according to any one of claims 2 to 7 to control the water content to 12 to 16%.
CN202210757659.6A 2022-06-30 2022-06-30 Light roadbed filler and structure and processing device thereof Active CN115010421B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115598325A (en) * 2022-11-29 2023-01-13 成都理工大学（Cn） Rainfall type landslide instability test device based on seepage macroscopic damage coupling analysis

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CN106116199A (en) * 2016-06-22 2016-11-16 天津港航工程有限公司 Producing engineering soil from alkaline slag and preparation method thereof
CN206457680U (en) * 2016-12-30 2017-09-01 安徽省交通规划设计研究总院股份有限公司 A kind of roadbed internal drainage system filled for construction refuse regenerated material
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Publication number Priority date Publication date Assignee Title
CN115598325A (en) * 2022-11-29 2023-01-13 成都理工大学（Cn） Rainfall type landslide instability test device based on seepage macroscopic damage coupling analysis
CN115598325B (en) * 2022-11-29 2023-03-10 成都理工大学 Rainfall type landslide instability test device based on seepage macroscopic damage coupling analysis

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