Construction method of temporary road construction with waste mud and slag

Abstract

The invention relates to the technical field of building temporary roads, and discloses a construction method for building temporary roads with waste mud and slag, comprising the following construction steps: 1) vibrating and separating the waste mud and slag to form large-particle slag and small-particle slag, the small-particle slag is mixed with water and enters a mud pool to form slag mud; 2) conveying the slag mud to a stirrer, adding a curing agent into the stirrer, stirring and mixing the curing agent with the slag mud to form slurry-state solidified soil; 3) conveying the large-particle slag to a construction area for paving to form a roadbed of a temporary road; 4) placing side templates on both sides of the roadbed, the side templates enclose a filling space on the roadbed, solidified soil is filled in the filling space, and after the solidified soil is solidified, a solidified layer on the roadbed is formed; the side templates are removed, and the roadbed and the solidified layer form a temporary road; in this way, the waste mud and slag are effectively reused, so as to achieve the purpose of waste recycling.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of building temporary roads, specifically, to a construction method for building temporary roads using waste mud and slag. Background Art

[0002] At present, in foundation engineering, a large amount of waste mud and slag is generated due to the construction of bored piles. These waste mud and slag are in a plastic state due to their extremely high water content, forming almost flowing slag. Since the waste mud and slag have too high water content, low strength, and are easy to cause site pollution, general slag disposal sites do not accept waste mud and slag. Therefore, the disposal of waste mud and slag on construction sites has always been a major problem.

[0003] In the prior art, the problem is usually solved by drying the waste mud and slag at the construction site. After 5 to 7 days of drying, the waste mud and slag lose moisture and become relatively dry ordinary slag, which is then transported to the slag disposal site. However, the general construction site is small and cannot provide a place for drying. In addition, in the rainy season, there are fewer sunny days and the drying time is longer. Therefore, a method for timely processing the waste mud and slag is needed to achieve the purpose of waste recycling. Summary of the invention

[0004] The purpose of the present invention is to provide a construction method for building a temporary road with waste mud and slag, aiming to solve the problem in the prior art that the waste mud and slag are difficult to recycle and reuse.

[0005] The present invention is achieved in that a construction method for constructing a temporary road with waste mud and slag comprises the following construction steps:

[0006] 1) placing the waste mud and slag in a vibrating screen for vibration separation to form large particles of slag on the vibrating screen and small particles of slag that pass through the vibrating screen. The small particles of slag are mixed with water and enter the mud pool to form slag mud;

[0007] 2) conveying the slag mud to a stirrer, adding a curing agent into the stirrer, and stirring and mixing the curing agent with the slag mud to form a slurry-like solidified soil;

[0008] 3) transporting the large-particle slag to the construction area for paving to form a temporary roadbed;

[0009] 4) Placing side formworks on both sides of the roadbed, the side formworks enclose a filling space on the roadbed, filling the solidified soil in the filling space, and forming a solidified layer on the roadbed when the solidified soil solidifies; removing the side formworks, and the roadbed and the solidified layer form a temporary road.

[0010] Optionally, in the construction step 1), waste mud and slag are excavated by an excavator, and the waste mud and slag are placed in a charging hopper, and the waste mud and slag are placed on a vibrating screen by using the charging hopper.

[0011] Optionally, in the construction step 1), a horizontally arranged and forwardly conveying conveyor belt is provided behind the vibrating screen, and the transfer hopper is located above the conveyor belt; when the excavator places the excavated waste mud and debris in the transfer hopper, the waste mud and debris in the loading hopper falls from top to bottom onto the conveyor belt and is transmitted forward to the vibrating screen along the conveyor belt.

[0012] Optionally, the vibrating screen is placed in a separation box, the separation box has a separation chamber with an open top, and the vibrating screen is arranged in the middle of the separation chamber; along the direction from back to front, the vibrating screen is arranged tilted downward, and a bottom chamber is formed between the bottom of the separation chamber and the vibrating screen;

[0013] In the construction step 1), after the waste mud and debris are placed on the vibrating screen, as the vibrating screen vibrates, the large particles of debris are placed on the vibrating screen and are transferred to the outside of the vibrating screen to accumulate into a large particle debris pile; the small particles of debris pass through the vibrating screen and fall into the bottom cavity, where they are mixed with water to form the mud and debris, which are then transported to the mud pool.

[0014] Optionally, the rear end of the vibrating screen is arranged vertically opposite to the charging hopper, and a chute is provided at the front end of the vibrating screen, and the chute is arranged downwardly in a direction from the back to the front;

[0015] In the construction step 1), the large particles of soil remaining on the vibrating screen are discharged to an external accumulation area through a chute for accumulation.

[0016] Optionally, a water spray pipe is provided 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 mud and debris are placed on the vibrating screen for vibration separation, the plurality of water spray heads spray water downwards, and the water washes the waste mud and debris on the vibrating screen from top to bottom, and falls into the bottom cavity along with the small particles of debris.

[0017] Optionally, in the construction step 2), the curing agent is prepared by mixing cement clinker, slag powder, quicklime, flue gas desulfurization gypsum powder and sodium sulfate.

[0018] Optionally, in the construction step 2), the curing agent is composed of 25%-35% cement clinker, 40%-70% slag powder, 5%-10% quicklime, 8%-15% flue gas desulfurization gypsum powder and 2%-5% sodium sulfate according to the weight fraction ratio.

[0019] Optionally, the vibrating screen is disc-shaped, and has a plurality of sieve holes, and the plurality of sieve holes are arranged in an array throughout the vibrating screen; a bottom plate is provided at the bottom of the bottom cavity, and 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 arranged in the same direction of inclination;

[0020] The vibrating screen is connected to a driving structure, and the driving structure drives the vibrating screen to alternately reciprocate forward and backward and reciprocate laterally; a longitudinally arranged connecting strip is connected between the rear end of the vibrating screen and the rear end of the bottom plate, the rear end of the chute is connected to the front end of the vibrating screen, and the front end of the chute extends to the stacking area;

[0021] The vibrating screen is provided with a plurality of elastic strips, which are arranged in a curved manner along the transverse direction of the vibrating screen; the middle of the elastic strips is fixed on the vibrating screen and is located between adjacent screen holes, and the two ends of the elastic strips are movably arranged and arranged in a curved manner downward along the downward inclination direction of the vibrating screen;

[0022] In the construction step 1), when the driving structure drives the vibrating screen to alternately move back and forth and laterally, the vibrating screen drives the bottom plate to move synchronously through the connecting strip, and the vibrating screen drives the chute to move synchronously, and the two ends of the elastic strip swing back and forth synchronously with the vibrating screen to stir the bottom of the waste mud and slag placed on the vibrating screen.

[0023] Optionally, a track frame is provided above the vibrating screen, the track frame having a circular track arranged downward; a plurality of longitudinally arranged and rotatably arranged rotating shafts are connected to the track, and the plurality of track shafts are arranged at intervals along the circumference of the track; the top of the rotating shaft is movably connected to the track, and the bottom of the rotating shaft extends downward to be inserted into the waste mud and slag on the vibrating screen;

[0024] Stirring bars are provided on the periphery of the rotating shaft. When the driving structure drives the vibrating screen to alternately move back and forth and laterally, the multiple rotating shafts are squeezed by the waste mud and debris on the vibrating screen, move along the track, and rotate at the same time, so that the rotating shafts and stirring bars stir the waste mud and debris on the vibrating screen.

[0025] Compared with the prior art, the construction method for building a temporary road with waste mud and slag provided by the present invention divides the waste mud and slag into large-particle slag and small-particle slag through a screening method of vibration separation. The small-particle slag can be mixed with a curing agent as a main raw material to form solidified soil, and the large-particle slag can be directly paved in the construction area to form a roadbed. Side formworks are placed on both sides of the roadbed. The side formworks can prevent the slurry-like solidified soil filled in the enclosed area from flowing out of the enclosed area. After the solidified soil in the enclosed area solidifies, the side formworks are removed, and the roadbed and the solidified layer form a temporary road. In this way, the waste mud and slag can be effectively reused, and the purpose of waste recycling and resource utilization is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a construction schematic diagram of a temporary road constructed using waste mud and slag provided by the present invention;

[0027] Figure 2 It is a main schematic diagram of the temporary road provided by the present invention;

[0028] Figure 3 It is a schematic cross-sectional view of the separation box provided by the present invention;

[0029] Figure 4 It is a schematic top view of the vibrating screen provided by the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0032] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] 1-4 are preferred embodiments of the present invention.

[0034] The construction method for constructing a temporary road with waste mud and slag provided by the present invention comprises the following construction steps:

[0035] 1) placing the waste mud and slag in the vibrating screen 100 for vibration separation, forming large particles of slag on the vibrating screen 100 and small particles of slag passing through the vibrating screen 100, and the small particles of slag are mixed with water and enter the mud pool 200 to form slag mud;

[0036] 2) conveying the slag mud to the agitator 300, adding a curing agent into the agitator 300, and stirring and mixing the curing agent with the slag mud to form a slurry-like solidified soil;

[0037] 3) transporting large particles of soil to the construction area for paving to form a temporary roadbed 400;

[0038] 4) Place side templates 401 on both sides of the roadbed 400. The side templates 401 enclose a filling space on the roadbed 400. Fill the filling space with solidified soil. When the solidified soil solidifies, a solidified layer 402 is formed on the roadbed 400. Remove the side templates 401, and the roadbed 400 and the solidified layer 402 form a temporary road.

[0039] The construction method for constructing a temporary road with waste mud and debris provided above divides the waste mud and debris into large-particle debris and small-particle debris by vibrating and separating the waste mud and debris. The small-particle debris can be mixed with a curing agent as the main raw material to form solidified soil, and the large-particle debris can be directly paved in the construction area to form a roadbed 400. Side templates 401 are placed on both sides of the roadbed 400. The side templates 401 can prevent the slurry-like solidified soil filled in the enclosed area from flowing out of the enclosed area. After the solidified soil in the enclosed area solidifies, the side templates 401 are removed, and the roadbed 400 and the solidified layer 402 form a temporary road. In this way, the waste mud and debris are effectively reused to achieve the purpose of waste recycling and resource utilization.

[0040] In the above step 2), the curing agent comes from a powder tank, which has an automatic metering system. According to the proportion of solidified soil, a fixed amount of curing agent is delivered to the agitator 300 in proportion. The powder tank delivers the curing agent to the agitator 300 through a powder delivery pipe.

[0041] In the construction step 1), waste mud and slag are excavated by an excavator and placed in a charging hopper 500, and the waste mud and slag are placed on the vibrating screen 100 by using the charging hopper 500. The charging hopper 500 has an injection port and a discharge port, and the waste mud and slag are continuously injected into the injection port, and the waste mud and slag fall vertically downward from the discharge port under the action of gravity, so that the waste mud and slag can be completely placed on the vibrating screen 100 by using the charging hopper 500.

[0042] In construction step 1), a horizontally arranged and forwardly conveying conveyor belt 600 is provided behind the vibrating screen 100, and the loading hopper 500 is located above the conveyor belt 600; when the excavator places the excavated waste mud and debris into the loading hopper 500, the waste mud and debris in the loading hopper 500 falls from top to bottom onto the conveyor belt 600, and is transmitted forward to the vibrating screen 100 along the conveyor belt 600.

[0043] The waste mud and slag in the charging hopper 500 will fall onto the conveyor belt 600 due to gravity, and the conveyor belt 600 will transport the waste mud and slag to the vibrating screen 100, and the vibrating screen 100 will screen the waste mud and slag.

[0044] The vibrating screen 100 is placed in a separation box 1000, which has a separation chamber 101 with an opening at the top, and the vibrating screen 100 is arranged in the middle of the separation chamber 101; along the direction from back to front, the vibrating screen 100 is arranged downwardly and obliquely, and a bottom chamber 102 is formed between the bottom of the separation chamber 101 and the vibrating screen 100;

[0045] In construction step 1), after the waste mud and debris are placed on the vibrating screen 100, as the vibrating screen 100 vibrates, large particles of debris are placed on the vibrating screen 100 and are transmitted to the outside of the vibrating screen 100 to accumulate into a large particle debris pile; small particles of debris pass through the vibrating screen 100 and fall into the bottom cavity 102, where they are mixed with water to form mud and debris, which are then transported to the mud pool 200.

[0046] In this way, the waste mud and debris can be divided into large particles of debris located on the vibrating screen 100 and small particles of debris passing through the vibrating screen 100. During the screening process of the vibrating screen 100, the large particles of debris will not fall down through the vibrating screen 100 due to their large radial size, so they will be screened to the vibrating screen 100 and transmitted to the outside. The small particles of debris will pass through the vibrating screen 100 and fall into the bottom cavity 102, and mix with water to form mud and debris.

[0047] The rear end of the vibrating screen 100 is vertically opposite to the charging hopper 500 , and a chute 700 is disposed at the front end of the vibrating screen 100 . The chute 700 is tilted downward in a direction from the back to the front.

[0048] In the construction step 1), the large particles of soil left on the vibrating screen 100 are discharged to the external accumulation area through the chute 700 for accumulation. In this way, due to the tilt of the vibrating screen 100, the large particles of soil screened out will enter the chute 700 in an inclined manner, and then move along the extension direction of the chute 700, and finally discharged to the external accumulation area for accumulation.

[0049] A water spray pipe 800 is provided above the vibrating screen 100, and the water spray pipe 800 is provided with a plurality of water spray heads arranged downwards; in the construction step 1), when the waste mud and slag are placed on the vibrating screen 100 for vibration separation, the plurality of water spray heads spray water downwards, and the water washes the waste mud and slag on the vibrating screen 100 from top to bottom, and falls into the bottom cavity 102 along with the small particles of slag.

[0050] In this way, water is added and screened through the water spray pipe 800. Under the action of water flow and the vibrating screen 100, since the vibrating screen 100 and the chute 700 are inclined, large particles of debris are discharged to the external accumulation area, while small particles of debris are mixed with water to form mud debris.

[0051] In construction step 2), the curing agent is mixed with cement clinker, slag powder, quicklime, flue gas desulfurization gypsum powder and sodium sulfate. In this way, the curing agent formed is different from traditional cement materials. The cement material has a good reaction effect with sand and gravel, and can be configured with extremely high strength concrete, but the reaction effect of cement materials with mud, slag and soil is much worse, and the strength is general. Therefore, the mixing effect of cement materials and waste mud slag is poor, and the cost of each component of the above-mentioned curing agent is low. Compared with the use of cement materials, after the curing agent is used to solidify the slag mud, the solidified soil slurry formed has the characteristics of fast hardening speed and high hardening strength, so it is possible to build roads with solidified soil slurry.

[0052] Specifically, in construction step 2), the curing agent is composed of 25%-35% cement clinker, 40%-70% slag powder, 5%-10% quicklime, 8%-15% flue gas desulfurization gypsum powder and 2%-5% sodium sulfate according to the weight fraction ratio. The various components of the curing agent are low in cost, and the formed curing layer 402 has high strength, no shrinkage, slight expansion, and fast hardening and solidification time.

[0053] Among them, cement clinker is P.O42.5R type silicate cement, slag powder is S105 grade granulated blast furnace slag powder, mainly powder ground from water slag, the calcium oxide and magnesium oxide content in quicklime is not less than 90%, with good stability, and the main component of flue gas desulfurization gypsum powder is calcium sulfate dihydrate;

[0054] The curing principle is as follows: the water in the slag slurry reacts with the above-mentioned cement clinker to form gel-like hydrates such as hydrated calcium silicate, and then the active calcium oxide and silicon dioxide in the slag powder react with water in an alkaline environment to form hydrated calcium silicate gel, and finally the sulfate ions in the gypsum react with the hydrated calcium silicate to form ettringite. The needle-like or columnar crystals of ettringite cross each other in the pores and form a spatial structure with the hydrated calcium silicate, which plays a role in supporting the pores and reducing the average pore size of the reinforced soil pores.

[0055] The addition of quicklime can also produce a good chemical reaction. It first reacts with water to form calcium hydroxide, which provides an alkaline environment for the slurry and promotes the full reaction of silica in cement clinker and slag powder. Then calcium hydroxide reacts with carbon dioxide in the air to form calcium carbonate. Calcium carbonate is a hard crystal with high strength and water stability. In addition, active silica-alumina minerals dissociate under the alkaline stimulation of calcium oxide, and react with calcium hydroxide with the participation of water to form hydrated calcium silicate and calcium aluminate.

[0056] Therefore, after this curing agent is stirred and mixed with the slag mud, the formed solidified soil has the advantages of high strength, no shrinkage, slight expansion, fast hardening and solidification time, etc. Compared with using cement materials to act as a curing material, this curing agent has better effect and lower cost.

[0057] The vibrating screen 100 is disc-shaped and has a plurality of sieve holes 103 , which are arranged in an array throughout the vibrating screen 100 ; a bottom plate 104 is provided at the bottom of the bottom cavity 102 , and the bottom of the bottom plate 104 is movably abutted against the bottom of the bottom cavity 102 , and the bottom plate 104 and the bottom of the bottom cavity 102 are arranged to be inclined in the same direction.

[0058] The vibrating screen 100 is connected to a driving structure 105, which drives the vibrating screen 100 to alternately reciprocate forward and backward and horizontally; a longitudinally arranged connecting strip 106 is connected between the rear end of the vibrating screen 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 vibrating screen 100, and the front end of the chute 700 extends to the stacking area.

[0059] A plurality of elastic strips 107 are provided on the vibrating screen 100, and the elastic strips 107 are arranged in a lateral bending manner along the vibrating screen 100; the middle portion of the elastic strip 107 is fixed on the vibrating screen 100 and is located between adjacent sieve holes 103, and both ends of the elastic strip 107 are movably arranged and arranged in a downwardly inclined direction of the vibrating screen 100, and the two ends of the elastic strip 107 are arranged in a downwardly bent manner.

[0060] In construction step 1), when the driving structure 105 drives the vibrating screen 100 to alternately move back and forth and laterally, the vibrating screen 100 drives the bottom plate 104 to move synchronously through the connecting bar 106, and the vibrating screen 100 drives the chute 700 to move synchronously, and the two ends of the elastic bar 107 swing back and forth synchronously with the vibrating screen 100 to stir the bottom of the waste mud and debris placed on the vibrating screen 100.

[0061] During the back-and-forth and lateral reciprocating movement of the vibrating screen 100, the waste mud and slag vibrate accordingly, and small particles of the waste mud and slag fall from the sieve holes 103 into the bottom cavity 102. During the use, the elastic strip 107 is continuously subjected to inertia due to the effect of inertia. Therefore, the elastic strip 107 can sweep and stir the waste mud and slag on the vibrating screen 100 to avoid small particles of slag that may clog the sieve holes 103, and can promote the falling of small particles of slag in the plugging holes. In addition, during the movement of the vibrating screen 100, the connecting strip 106 can drive the bottom plate 104 to move synchronously to promote the slag and mud to flow out of the bottom cavity 102.

[0062] A track frame is provided above the vibrating screen 100, and the track frame has a circular track arranged downward; a plurality of longitudinally arranged and rotatably arranged rotating shafts 111 are connected to the track, and the plurality of track shafts are arranged at intervals along the circumference of the track; the top of the rotating shaft 111 is movably connected to the track, and the bottom of the rotating shaft 111 extends downward and is inserted into the waste mud and slag on the vibrating screen 100;

[0063] Stirring bars 112 are provided on the periphery of the rotating shaft 111. When the driving structure 105 drives the vibrating screen 100 to alternately reciprocate back and forth and reciprocate laterally, the multiple rotating shafts 111 are squeezed by the waste mud and debris on the vibrating screen 100, move along the track 110, and rotate at the same time, so that the rotating shafts 111 and the stirring bars 112 stir the waste mud and debris on the vibrating screen 100.

[0064] The rotating shaft 111 can move 110 along the track, and as the waste mud and debris roll over the vibrating screen 100, the waste mud and debris roll over the rotating shaft 111 and the stirring bar 112. The rotating shaft 111 moves 110 along the track, and the stirring bar rotates and stirs at the same time, so that the stirring bar 112 can break up the waste mud and debris, causing small particles of debris to fall into the bottom cavity 102 through the sieve holes 103.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction method for building a temporary road with waste mud and slag, characterized in that: The construction steps include: 1) Place the waste mud and slag in a vibrating screen for vibration separation, forming large particles of slag on the vibrating screen and small particles of slag that pass through the vibrating screen. The small particles of slag are mixed with water and enter the mud pool to form slag mud; 2) The slag mud is transported to a stirrer, a curing agent is added to the stirrer, and the curing agent is stirred and mixed with the slag mud to form a slurry-like solidified soil; 3) transporting the large-particle slag to the construction area for paving to form the roadbed of a temporary road; 4) Placing side templates on both sides of the roadbed, the side templates enclose a filling space on the roadbed, filling the solidified soil in the filling space, and forming a solidified layer on the roadbed after the solidified soil solidifies; removing the side templates, the roadbed and the solidified layer form a temporary road; In the construction step 1), waste mud and slag are excavated by using an excavator, and the waste mud and slag are placed in a loading hopper, and the waste mud and slag are placed on a vibrating screen by using the loading hopper; The vibrating screen is placed in a separation box, the separation box has a separation chamber with an opening at the top, and the vibrating screen is arranged in the middle of the separation chamber; along the direction from the back to the front, the vibrating screen is arranged downwardly and a bottom chamber is formed between the bottom of the separation chamber and the vibrating screen; In the construction step 1), after the waste mud and slag are placed on the vibrating screen, as the vibrating screen vibrates, the large particles of slag are placed on the vibrating screen and are transferred to the outside of the vibrating screen to form a large particle slag pile; the small particles of slag pass through the vibrating screen and fall into the bottom cavity, and are mixed with water to form the mud and slag, and the mud and slag are transported to the mud pool; The rear end of the vibrating screen is arranged vertically opposite to the charging hopper, and the front end of the vibrating screen is provided with a chute, and the chute is arranged downwardly in a direction from the back to the front; In the construction step 1), the large particles of soil left on the vibrating screen are discharged to an external accumulation area through a chute for accumulation; The vibrating screen is in a disc shape and has a plurality of screen holes, which are arranged in an array throughout the vibrating screen; a bottom plate is provided at the bottom of the bottom cavity, 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 arranged in the same direction of inclination; The vibrating screen is connected to a driving structure, and the driving structure drives the vibrating screen to alternately reciprocate forward and backward and reciprocate laterally; a longitudinally arranged connecting strip is connected between the rear end of the vibrating screen and the rear end of the bottom plate, the rear end of the chute is connected to the front end of the vibrating screen, and the front end of the chute extends to the stacking area; The vibrating screen is provided with a plurality of elastic strips, which are arranged in a curved manner along the transverse direction of the vibrating screen; the middle of the elastic strips is fixed on the vibrating screen and is located between adjacent screen holes, and the two ends of the elastic strips are movably arranged and arranged in a curved manner downward along the downward inclination direction of the vibrating screen; In the construction step 1), when the driving structure drives the vibrating screen to alternately move back and forth and horizontally, the vibrating screen drives the bottom plate to move synchronously through the connecting strip, and the vibrating screen drives the chute to move synchronously, and the two ends of the elastic strip swing synchronously back and forth with the vibrating screen to stir the bottom of the waste mud and slag placed on the vibrating screen; A track frame is provided above the vibrating screen, and the track frame has a circular track arranged downward; The track is connected with a plurality of longitudinally arranged and rotatably arranged rotating shafts, and the plurality of rotating shafts are arranged at intervals along the circumference of the track; the top of the rotating shaft is movably connected to the track, and the bottom of the rotating shaft extends downward and is inserted into the waste mud and slag on the vibrating screen; The outer periphery of the rotating shaft is provided with stirring bars. When the driving structure drives the vibrating screen to alternately reciprocate forward and backward and reciprocate laterally, the plurality of rotating shafts are squeezed by the waste mud and slag on the vibrating screen, move along the track, and rotate at the same time, so that the rotating shaft and the stirring bars stir the waste mud and slag on the vibrating screen; In step 2), the curing agent comes from a powder tank, which has an automatic metering system. According to the proportion of solidified soil, a fixed amount of curing agent is delivered to the agitator in proportion. The powder tank delivers the curing agent to the agitator through a powder delivery pipe.

2. The construction method for building a temporary road with waste mud and slag as claimed in claim 1, characterized in that: In the construction step 1), a horizontally arranged and forwardly conveying conveyor belt is provided behind the vibrating screen, and the loading hopper is located above the conveyor belt; when the excavator places the excavated waste mud and slag in the loading hopper, the waste mud and slag in the loading hopper falls from top to bottom onto the conveyor belt and is transmitted forward to the vibrating screen along the conveyor belt.

3. The construction method for building a temporary road with waste mud and slag as claimed in claim 1, characterized in that: A water spray pipe is provided 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 mud and slag are placed on the vibrating screen for vibration separation, the plurality of water spray heads spray water downwards, and the water washes the waste mud and slag on the vibrating screen from top to bottom, and falls into the bottom cavity along with the small particles of slag.

4. The construction method for building a temporary road with waste mud and slag as claimed in claim 1, characterized in that: In the construction step 2), the curing agent is prepared by mixing cement clinker, slag powder, quicklime, flue gas desulfurization gypsum powder and sodium sulfate.

5. The construction method for building a temporary road with waste mud and slag as claimed in claim 1, characterized in that: In the construction step 2), the curing agent is composed of 25%-35% cement clinker, 40%-70% slag powder, 5%-10% quicklime, 8%-15% flue gas desulfurization gypsum powder and 2%-5% sodium sulfate according to the weight fraction ratio.

Images