In-situ maintenance system of modified undisturbed soil building block material for ecological environment restoration

Abstract

The utility model discloses an in-situ maintenance system of a modified undisturbed soil building block material for ecological environment restoration. The in-situ maintenance system comprises a solar energy collecting device and a maintenance device arranged above the solar energy collecting device, the curing device comprises a glass box body, a water containing groove formed in the bottom of the glass box body and a curing frame arranged above the water containing groove. By adopting a double curing mode of steam curing and sunlight gathering, the on-site high-efficiency curing of the modified undisturbed soil building block material is realized, and the on-site high-efficiency curing device has the characteristics of economy, greenness and low carbon.

Description

Technical Field

[0001] This utility model relates to the field of ecological restoration technology, specifically to an in-situ maintenance system for modified undisturbed soil block materials used in ecological environment restoration. Background Technology

[0002] The Yellow River Basin, as one of the regions in my country most severely affected by soil erosion, has always been a key target for ecological construction and environmental protection. Soil erosion is even more severe in the middle reaches of the Yellow River, leading to long-term sediment accumulation in its lower reaches. The most effective treatment method is to construct gully protection along the river channel, typically using cement blocks. However, cement blocks are expensive and have a significant environmental impact. Furthermore, cement blocks require proper curing before being transported to the restoration site, which, in regions like Inner Mongolia, often presents challenges due to transportation constraints, including insufficient material supply and high breakage rates.

[0003] Therefore, this utility model adopts the method of directly using the original soil to make block materials for ecological restoration, which can reduce the restoration cost.

[0004] Furthermore, curing is an essential step in improving the performance of masonry blocks during the manufacturing process. Curing typically involves either natural curing or steam curing. Natural curing requires manual insulation and humidification, which is labor-intensive, time-consuming, and results in poorer performance. Steam curing, on the other hand, requires specialized equipment (boilers, etc.), leading to high energy consumption. Local infrastructure shortages, high construction costs, and high energy consumption also pose risks of environmental pollution and safety issues. Therefore, addressing the costs and transportation of masonry blocks, as well as the aforementioned problems in the curing process, is crucial for ecological restoration projects. Utility Model Content

[0005] In view of this, the purpose of this utility model is to address the shortcomings of the existing technology by providing an in-situ curing system for modified undisturbed soil block materials for ecological environment restoration. This system not only solves the problem of high cost of transporting block materials from other locations, but also solves the problems of high cost, high energy consumption, and environmental pollution of block material curing equipment. It realizes the on-site use of solar energy for the curing and modification of undisturbed soil block materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An in-situ curing system for modified undisturbed soil block material for ecological environment restoration includes a solar energy collection device and a curing device disposed above the solar energy collection device; the curing device includes a glass box, a water tank disposed at the bottom of the glass box, and a curing frame disposed above the water tank; the solar energy collection device is a concave mirror with a parabolic rotational design, and the opening of the parabola faces the solar energy collection device.

[0008] A solar energy collection device is used to convert solar energy into heat energy to heat the curing device. The water in the water tank is heated and vaporized to form water vapor. The water vapor cures the undisturbed soil blocks in the curing box, accelerating the hydration reaction and hardening process of the internal minerals, and improving early strength and durability. Using water vapor to cure the undisturbed soil blocks can both heat and humidify them, eliminating the need for separate water spraying. This simplifies the structure, reduces costs, and better improves the performance of the undisturbed soil blocks.

[0009] By utilizing the reflection principle of a reflector, incident light rays are reflected and concentrated onto the glass casing, increasing the solar energy density per unit area of ​​the collector. This causes the temperature to rise sharply, heating the medium (such as water) in the collector and converting solar energy into thermal energy, thereby improving the utilization rate of solar energy.

[0010] Concave mirrors can be installed in sections for easy transportation. Furthermore, the light-receiving area can be controlled and adjusted by disassembling or adding concave mirrors, thereby regulating the luminous flux. Adjusting the luminous flux can alter the hydration rate and hydration products of undisturbed soil blocks, resulting in undisturbed soil block materials of varying strengths.

[0011] Preferably, exhaust valves are provided on both sides of the curing device to regulate the temperature and humidity levels inside the curing device.

[0012] Preferably, the water tank is equipped with a cover plate, a steam delivery pipe is installed on the cover plate, and a steam pump is installed on the steam delivery pipe. The cover plate is inclined, and a return port is provided on the lower side of the cover plate. The cover plate separates the water tank from the curing area. The steam pump regulates the amount of water vapor entering the curing area, thereby controlling the temperature and humidity within it. When the water vapor cools, it condenses into water, which collects at the low point of the cover plate and flows back into the water tank through the return port, forming a water cycle. This saves water resources and alleviates the water scarcity situation.

[0013] Preferably, the glass enclosure is cylindrical; a temperature sensor and a humidity sensor are also installed inside the glass enclosure. The cylindrical shape maximizes the area exposed to light and facilitates the collection of condensate; it also allows for convenient monitoring of the temperature and humidity inside the curing chamber at any time.

[0014] Preferably, a heat-absorbing coating is provided on the glass box.

[0015] Preferably, hydraulic cylinders are symmetrically arranged on both sides of the bottom of the solar energy collection device.

[0016] The height and tilt angle of the solar energy collection device can be adjusted by using hydraulic cylinders on both sides, which allows for better utilization of solar energy.

[0017] Preferably, a drive motor is provided in the middle of the bottom of the solar energy collection device, and a pad is provided between the output shaft of the drive motor and the bottom of the solar energy collection device.

[0018] The horizontal position of the solar energy collection device can be finely adjusted by driving the motor, and the pad can act as a buffer to protect the concave mirror.

[0019] Preferably, a moving mechanism is provided at each of the two ends of the bottom of the maintenance device.

[0020] Preferably, the moving mechanism includes a base, a lead screw disposed within the base, and a slider sleeved on the lead screw; the slider is connected to the glass housing, and the lead screw is driven by a servo motor. The moving mechanism allows for left and right movement of the maintenance device, resulting in better reception of reflected light.

[0021] Preferably, the curing frame is provided with a curing groove. This prevents the block material from shifting or falling off when the curing device is moved.

[0022] The beneficial effects of this utility model are:

[0023] This invention places the masonry block material directly in the curing chamber, allowing it to come into direct contact with high-temperature steam, which simultaneously humidifies and heats the material. Additionally, reflected sunlight and other rays can directly illuminate the curing chamber, further heating the material. This achieves dual curing of the masonry block material through both steam curing and concentrated sunlight, accelerating the hydration rate and reaction efficiency of the minerals within the block material. This generates a gel substance with cementing properties similar to calcium silicate hydrate (CSH) or calcium aluminosilicate hydrate (CASH). This gel substance improves the pore structure of the undisturbed soil masonry block material, strengthens the bonding between particles, and increases its strength. Therefore, this invention, by employing a dual curing method of steam curing and concentrated sunlight, achieves efficient on-site curing of undisturbed soil masonry block material, exhibiting green and low-carbon characteristics. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 A partial structural diagram of the intermediate curing box;

[0026] Figure 3 This is a schematic diagram of another embodiment of the present invention;

[0027] Figure 4 for Figure 3 A partial structural diagram of the intermediate curing box;

[0028] Figure 5 for Figure 3 A partial structural diagram of China Mobile's organizational structure;

[0029] Figure 6 The diagram shows the compressive strength test results of this utility model at different temperatures.

[0030] In the diagram: 1 Concave mirror, 2 Glass box, 3 Diagonal brace, 4 Exhaust valve, 5 Temperature sensor, 6 Humidity sensor, 7 Curing rack, 8 Block material, 9 Water tank, 10 Steam pump, 11 Cover plate, 12 Return port, 13 Support frame, 14 Hydraulic cylinder, 15 Drive motor, 16 Pad plate, 17 Moving mechanism, 18 Base, 19 Lead screw, 20 Slider, 21 Curing tank.

[0031] T1 is for room temperature curing, T2 is 40℃, T3 is 60℃, and T4 is 80℃. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] An in-situ curing system for modified undisturbed soil block materials used in ecological environment restoration, such as Figure 1 As shown, it includes a solar energy collection device and a maintenance device installed above the solar energy collection device. The solar energy collection device is a concave mirror 1, which is designed with a parabolic rotation, and the opening of the parabola faces the solar energy collection device. The mirror surface of the concave mirror 1 is spaced apart from the maintenance device by diagonal braces 3, and exhaust valves 4 are provided on both sides of the maintenance device.

[0035] like Figure 2 As shown, the curing device includes a horizontally arranged cylindrical glass box 2, a water tank 9 located at the bottom of the glass box 2, and a curing frame 7 located above the water tank 9. The curing frame 7 is used to place the original soil block material 8 to be cured. A heat-absorbing coating is provided on the glass box 2, and the heat-absorbing coating is a conventional coating.

[0036] Temperature sensor 5 and humidity sensor 6 are also installed inside the glass enclosure 2.

[0037] Example 2

[0038] An in-situ curing system for modified undisturbed soil block material used in ecological environment restoration includes a solar energy collection device and a curing device mounted above the solar energy collection device via a support frame 13. The solar energy collection device is a concave mirror 1, which has a parabolic rotational design with the opening of the parabola facing the solar energy collection device.

[0039] like Figure 4As shown, the curing device includes a glass box 2, a water tank 9 located at the bottom of the glass box 2, and a curing frame 7 located above the water tank 9. The curing frame 7 is provided with a curing trough 21 for placing the original soil block material 8 to be cured.

[0040] A cover plate 11 is provided on the water tank 9, and a steam conveying pipe is provided on the cover plate 11. A steam pump 10 is provided on the steam conveying pipe. The cover plate 11 is inclined, and a return port 12 is provided on the lower side of the cover plate 11. The cover plate 11 separates the water tank 9 from the curing area. The amount of water vapor entering the curing area is regulated by the steam pump 10, thereby controlling the temperature and humidity inside. When the water vapor cools down, it becomes condensate and collects in the low-lying part of the cover plate 11, flowing back into the water tank 9 through the return port 12, forming a water circulation.

[0041] A heat-absorbing coating is applied to the glass enclosure 2; this coating is a conventional coating. The glass enclosure 2 can also be other shapes, such as rectangular. The water tank can be connected to an external water pipe.

[0042] Temperature sensor 5 and humidity sensor 6 are also installed inside the glass enclosure 2.

[0043] A controller can also be set in the above system to control the opening and closing of the exhaust valve 4 and the steam pump 10. The structure, connection method and working principle of the controller are all conventional methods and belong to the prior art.

[0044] Example 3

[0045] An in-situ curing system for modified undisturbed soil block materials used in ecological environment restoration, such as Figure 3 As shown, the difference between this embodiment and embodiment 2 is the addition of an adjustment design; all other structures are the same as in embodiment 1 or embodiment 2.

[0046] The adjustment design is as follows: hydraulic cylinders 14 are symmetrically arranged on both sides of the bottom of the concave mirror 1, and a drive motor 15 is arranged in the middle of the bottom of the cylinders. A pad 16 is arranged between the output shaft of the drive motor 15 and the bottom of the concave mirror 1.

[0047] Movable mechanisms 17 are provided at both ends of the bottom of the glass box 2; for example Figure 5 As shown, the moving mechanism 17 includes a base 18 mounted on a support frame 13, a lead screw 19 mounted inside the base 18, and a slider 20 sleeved on the lead screw 19. The slider 20 is connected to the glass housing 2, and the lead screw 19 is driven by a servo motor. The servo motor drives the lead screw 19 to rotate, and the slider 20 moves the glass housing 2 left and right along the lead screw 19, which is generally used for fine adjustments.

[0048] The servo motor can also be replaced by a handle, which can be adjusted manually.

[0049] The hydraulic cylinders, drive motors, and servo motors here are all conventional equipment. This adjustment design can also be used in the structure of Example 1.

[0050] The maintenance method for this device includes the following steps:

[0051] (1) Using the above-mentioned curing device, the original soil block material 8 to be cured is placed in the curing trough 21 of the curing frame 7 for curing; the light flux of the reflected light can be adjusted by adjusting the area of ​​the concave mirror 1 so that the solar radiation intensity gathered by the concave mirror is 1817.425~1950.372KJ / ㎡ per hour, which can make the water in the water tank heat up quickly.

[0052] (2) When sunlight shines on the concave mirror 1, the incident light is concentrated at the bottom of the glass box 2 after reflection, which heats the water in the water tank 9 to form water vapor. The water vapor rises to the curing area (curing frame 7) to cure the original soil block material 8 on the curing frame 7. At this time, the water vapor provides a high temperature and high humidity environment for the original soil block material 8, which can achieve a high temperature curing environment and provide the humidity space required for the early strength of the block material 8.

[0053] (3) The reflected light and sunlight gathered at the same time directly irradiate the glass box 2 and provide auxiliary heating to the original soil block material 8 on the curing frame 7, making more efficient use of solar energy.

[0054] After curing for 4-12 hours, remove the original soil block material 8 for later use. The block material in this patent can be existing material or can be prepared directly from the original soil at the repair site.

[0055] The preparation process of undisturbed soil block material is as follows: Undisturbed soil from the ecological restoration site is mixed with solid waste such as slag, and a modifier is added and mixed evenly. The mixture is then placed in a mold and pressed into blocks. Both the mixing and pressing processes are standard operations. The slag content is 10%, and the modifier content is 12%.

[0056] The selection of undisturbed earthen block material 8 is divided into the following five types:

[0057] AT group: by mass fraction, 75% undisturbed soil, and modifier (M s =2.0)12%, blast furnace slag 10%, water 3%.

[0058] BT group: by mass fraction, 75% undisturbed soil, and modifier (M) s =2.5) 12%, fly ash 10%, water 3%.

[0059] CT group: by mass fraction, 75% undisturbed soil, and modifier (M)s =2.0) 12%, red mud 10%, water 3%.

[0060] DT group: by mass fraction, 75% undisturbed soil, and modifier (M s =2.5) 12%, steel slag 10%, water 3%.

[0061] ET group: by mass fraction, 75% undisturbed soil, and modifier (M) s =2.0) 12%, coal gangue 10%, water 3%.

[0062] The five raw materials in the above proportions were mixed separately and then pressed into blocks for later use. These were all standard procedures. The undisturbed soil was preferably from the Loess Plateau region.

[0063] Four groups of blocks were randomly selected from the five groups of block materials: AT, BT, CT, DT, and ET, with five blocks in each group, for later use.

[0064] Each group of undisturbed soil block materials was prepared in the above-mentioned curing device and cured using the above-mentioned curing method. The humidity inside the glass box 2 was 90%, and the curing time was 10 hours. The curing temperatures were set at 40℃, 60℃, 80℃ and room temperature respectively to obtain undisturbed soil block materials with different strengths.

[0065] Under the same test conditions, the test results obtained are as follows: Figure 6 As shown.

[0066] As shown in the figure, all five samples reached their maximum compressive strength at a curing temperature of 80℃, which were 15.17 MPa, 11.22 MPa, 9.10 MPa, 6.17 MPa, and 8.99 MPa, respectively. Compared with the compressive strength of the sample in Comparative Example 1, the increases were 16.60%, 56.50%, 256.3%, 104.10%, and 169.00%, respectively.

[0067] At 80℃, the Ca / Si ratio in the AT group is 1.44, and the main type of gel formed is CSH gel.

[0068] AT1: Ca / Si ratios are 1.28 and 1.56; Al / Si ratios are 0.15 and 0.38, with CSH gel as the main type; BT group: Ca / Si ratios are 0.39 and 0.53, with CSH gel as the main type.

[0069] The Al / Si ratio in the CT, DT, and ET groups ranged from 0.32 to 0.70, and the main type of gel formed was Si-Al gel.

[0070] It can be seen that temperature has a significant impact on the strength properties of the material, especially when the temperature reaches above 60℃, the strength increases significantly. The activity of the block material is enhanced under high temperature, which accelerates the hydration reaction process and generates hydrated calcium silicate gel (CSH) or hydrated calcium aluminosilicate gel (CASH). This gel material has cementing properties, improves the pore structure, and enhances the bonding between particles.

[0071] A concave mirror, through its rotating parabolic design, focuses incident sunlight onto a single line. According to optical principles, light parallel to the axis of the parabolic mirror will converge at the focal point, which is located on the mirror's axis. The curing chamber is installed on the focal line of the concave mirror. When sunlight is parallel to the mirror's axis, all reflected light radiation converges onto the curing chamber, rapidly heating it.

[0072] This invention utilizes the focusing properties of a concave solar mirror to efficiently collect and concentrate solar energy through reflection, increasing the solar energy density in the area and achieving a dual heating method for the curing chamber: steam heating and concentrated solar radiation. This concentrated solar energy can rapidly raise the local temperature, providing an efficient and environmentally friendly heat source for water heating. As the water temperature rises, water molecules gain sufficient energy to convert into steam. This process not only increases the water's thermal energy but also provides the necessary conditions for subsequent steam curing. Utilizing the high temperature and high humidity characteristics of water vapor to heat and moisturize the block materials can accelerate the hardening process, improve their early strength, and thus enhance their durability. By directly covering the material surface with water vapor, the heat and humidity of the steam can penetrate into the material's interior, promoting internal chemical reactions and physical changes, achieving rapid curing.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. An in-situ maintenance system for a modified undisturbed soil block material for ecological environment restoration, characterized in that, Includes a solar energy collection device, and a maintenance device installed above the solar energy collection device; The maintenance device includes a glass box, a water tank at the bottom of the glass box, and a maintenance frame above the water tank. The solar energy collection device is a concave mirror with a parabolic rotation design, and the opening of the parabola faces the solar energy collection device.

2. The in-situ maintenance system of the modified undisturbed soil block material for ecological environment restoration according to claim 1, characterized in that, An exhaust valve is provided on each side of the maintenance device.

3. The in-situ maintenance system of the modified undisturbed soil block material for ecological environment restoration according to claim 1, characterized in that, A cover plate is provided on the water tank, a steam conveying pipe is provided on the cover plate, and a steam pump is provided on the steam conveying pipe; the cover plate is inclined, and a return port is provided on the lower side of the cover plate.

4. The in-situ maintenance system of the modified undisturbed soil block material for ecological environment restoration according to claim 1, characterized in that, The glass enclosure is cylindrical; a temperature sensor and a humidity sensor are also installed inside the glass enclosure.

5. The in-situ maintenance system of the modified undisturbed soil block material for ecological environment restoration according to claim 1, characterized in that, A heat-absorbing coating is provided on the glass box.

6. The in-situ maintenance system of the modified undisturbed soil block material for ecological environment restoration according to claim 3, characterized in that, Hydraulic cylinders are symmetrically arranged on both sides of the bottom of the solar energy collection device.

7. The in-situ maintenance system of the modified undisturbed soil block material for ecological environment restoration according to claim 6, characterized in that, A drive motor is located in the middle of the bottom of the solar energy collection device, and a pad is provided between the output shaft of the drive motor and the bottom of the solar energy collection device.

8. The in-situ maintenance system of the modified undisturbed soil block material for ecological environment restoration according to claim 7, characterized in that, Movable mechanisms are provided at both ends of the bottom of the maintenance device.

9. The in-situ maintenance system of the modified undisturbed soil block material for ecological environment restoration according to claim 8, characterized in that, The moving mechanism includes a base, a lead screw disposed within the base, and a slider sleeved on the lead screw; the slider is connected to the glass housing, and the lead screw is driven by a servo motor.

10. The in-situ maintenance system of the modified undisturbed soil block material for ecological environment restoration according to claim 3, characterized in that, The curing rack is provided with a curing groove.

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