Device for testing optimal compaction moisture content of salinized soil
Through the fully automated optimal water content testing device for saline soil, the problem of instability of traditional manual measurement is solved, and the accurate measurement and database support of the optimal water content of saline soil is achieved, which improves the quality and efficiency of road construction.
Patent Information
- Application Number
- CN202422185012.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-05
AI Technical Summary
In the prior art, the determination of the optimal moisture content of saline soil relies on traditional manual measurement methods, resulting in unstable and inaccurate results, affecting the quality and efficiency of road traffic construction.
A test device for optimal water content of salted soil is designed, including control devices, batching devices, compacting devices and salt content testing devices, to realize fully automatic control and data processing, and to accurately control the addition amount, temperature and compacting process of salt and water, establish a database to automatically detect the optimal water content of salted soil.
It improves the stability and accuracy of the optimal water content test for salted soil, reduces human error, saves labor and costs, improves construction progress and efficiency, and provides rapid measurement and database support for salted soil at the construction site.
Smart Images
Figure CN223122765U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water content testing of saline soil, in particular to a testing device for the optimum compaction water content of saline soil. Background Technique
[0002] Due to the influence of natural and non-natural (mostly human factors) conditions, plain soil is transformed into saline soil and alkaline soil, as well as soil with different degrees of salinization and alkalinization, which is called saline soil. It is widely distributed globally, with an area as high as 9.5438×10 8 hm 2 , and in the past, the area of saline-alkali soil has been expanding at an almost constant rate every year. However, with the emergence of the global "greenhouse effect", the proportion of hot and cold days is gradually increasing, and the area of soil salinization in various countries shows a new upward trend, and the living environment is deteriorating. This disease has attracted the attention of many researchers in various fields, and the harmfulness of salinization has been realized. In the field of highway traffic construction, saline soil refers to soil with a soluble salt content greater than or equal to 0.3% and less than 20%. The formation of saline soil is restricted by climate factors such as precipitation and annual average temperature.
[0003] With the advent of the intelligent era, the construction of smart cities and the development of social economy have further promoted the rapid progress of the transportation industry. Therefore, highway traffic construction will enter a stage of great development. However, saline soil has become a major factor restricting highway traffic construction in the above areas, and due to topographical reasons, highway subgrades mostly adopt the form of filled subgrades, that is, a large amount of soil is needed for filling.
[0004] According to the "Technical Rules for the Design and Construction of Highway Subgrades in Saline Soil Areas" (JTG / T 3331-08-2022), saline soil can be used for highway subgrade filling, but its soluble salt content must meet certain requirements. Therefore, when saline soil is used as subgrade filler, monitoring the salt content of the soil becomes the top priority. At present, the determination of the optimum water content of highway soil needs to be completed manually according to the traditional determination method, but in the traditional determination process, human errors will occur, resulting in unstable and inaccurate determination results. Content of the Utility Model
[0005] The purpose of the utility model is to provide a testing device for the optimum compaction water content of saline soil, so as to solve the problems that the optimum water content of saline soil depends on manual measurement by the traditional determination method in the prior art, resulting in unstable and inaccurate determination results.
[0006] In order to solve the above problems, the utility model proposes a testing device for the optimum compaction water content of saline soil, and the technical scheme adopted is:
[0007] A testing device for the optimum compaction water content of saline soil includes a control device, a batching device, a compaction device and a salt content testing device.
[0008] The control device is used to control the operation of the test device and the acquisition, storage, processing, and output of data;
[0009] The batching device is connected to the control device and is used to prepare saline soil with different salt contents by mixing a certain mass of dry soil under the condition of salt content controlled by the control device;
[0010] The compaction device is connected to the batching device and to the control device. Under the condition of the temperature of the compaction device controlled by the control device, it is used to compact saline soil with different salt contents at different temperatures to obtain different masses of compacted saline soil with different salt contents at different temperatures. Through the processing of the control device, the optimum compaction moisture content of saline soil with different salt contents at different temperatures is obtained and a database is formed;
[0011] The salt content test device is connected to the control device and is used to detect the salt content concentration of the saline soil to be tested at a certain temperature. Through the control device, the optimum compaction moisture content of the saline soil to be tested is obtained by referring to the database.
[0012] Furthermore, the batching device includes a salt input structure, a water input structure, and a stirrer.
[0013] The salt input structure and the water input structure are arranged above the batching device and are used to input different amounts of salt and water into a certain mass of dry soil in the batching device through the control device to obtain dry soil with salt and water input;
[0014] The stirrer is arranged inside the batching device and is used to stir the dry soil with salt and water input to obtain saline soil with different salt contents.
[0015] Furthermore, the salt input structure includes a salt tank and a salt metering controller arranged below the salt tank, and the water input structure includes a water tank and a water metering controller arranged below the water tank.
[0016] Furthermore, the compaction device includes a temperature control component, a laser testing mechanism, and a rammer.
[0017] The temperature control component is arranged inside the compaction device and is used to control the temperature inside the compaction device through the control device;
[0018] The laser testing mechanism is arranged inside the compaction device and is used to measure the height of the compacted saline soil to determine whether the compacted saline soil meets the compaction requirements;
[0019] The rammer is arranged downward at the top of the compaction device and is used to strike saline soil with different salt contents at different temperatures so that the compacted saline soil meets the compaction requirements, and different masses of compacted saline soil with different salt contents at different temperatures are obtained.
[0020] Further, the laser testing mechanism includes a laser emitter and a laser receiver, which are arranged at the same height on the inner walls on both sides of the compaction device, and are used to measure the height of the compacted saline soil to determine whether the compacted saline soil meets the compaction requirements.
[0021] Further, the salt content testing device includes a robotic arm and a salt content testing needle. One end of the robotic arm is installed on the inner wall of the salt content testing box, and the salt content testing needle is installed at the other end of the robotic arm, and is used to detect the salt concentration of the saline soil to be tested at a certain temperature.
[0022] Further, the testing device further includes an oven, which is connected to the control device and to the batching device, and is used to screen and dry the soil for the test to obtain a certain mass of dry soil.
[0023] Further, the oven includes a screening mechanism and a drying chamber. The screening mechanism is arranged inside the oven and is used to screen out the soil for the test that meets the requirements; the drying chamber is connected to the screening mechanism and is used to receive the soil for the test and dry it to obtain a certain mass of dry soil.
[0024] Further, the testing device further includes a conveyor belt, which runs through the oven, the batching device, the compaction device and the salt content testing device, and is used to convey the dry soil in the oven to the batching device through the control device, and then convey the saline soil with different salt concentrations in the batching device to the compaction device; at the same time, it is used to convey the saline soil to be tested to the salt content testing device through the control device.
[0025] Further, the testing device further includes a mass tester arranged inside the oven and the compaction device, and is used to detect the mass of the dry soil in the oven and the mass of the saline soil with different salt concentrations in the compaction device after compaction at different temperatures.
[0026] Beneficial effects: The present utility model is an improved utility model. The present utility model uses a batching device to prepare saline soils with different salt contents from a certain mass of dry soil, and then compacts them at different temperatures through a compaction device to obtain different masses of saline soils with different salt contents at different temperatures. The optimal compaction moisture content of saline soils with different salt contents at different temperatures is obtained through the processing of a control device, and a database is formed. The saline soil to be tested is detected by a salt content testing device for the salt content of the saline soil to be tested at a certain temperature, and the optimal compaction moisture content of the saline soil to be tested is obtained by the control device referring to the database. The testing device for the optimal compaction moisture content of the saline soil of the present utility model uses a control device to control the operation of the testing device and the acquisition, storage, processing, and output of data, realizing fully automated operation and processing. On the one hand, it can speed up the testing efficiency and improve the stability and accuracy of the optimal compaction moisture content testing; on the other hand, it saves manpower and also reduces the errors caused by human factors and other factors. When automatically measuring the optimal moisture content of the saline soil at the construction site subsequently, it can not only quickly measure the optimal moisture content of the saline soil, improve the construction progress, but also save the transportation of the saline soil to the laboratory for repeated tests, thereby saving costs and improving efficiency.
[0027] The brand-new evaluation system proposed in the present utility model establishes a database of the optimal compaction moisture content of saline soils with different salt contents at different temperatures through pre-automatic experiments. Then, during the construction process or experiment, the saline soil at the construction site or in the experiment is put into the salt content testing device, and its optimal moisture content can be quickly obtained, providing convenience for subsequent construction and data support for the utilization of saline soils. To further optimize the application of saline soils in highway subgrades, the present utility model integrates a module for measuring the optimal moisture content when the soil body reaches the optimal compaction effect, which can enrich the database of saline soil applications. In actual application scenarios, the information of the saline soil can be continuously collected throughout the construction process through the present utility model, facilitating the progress of construction. This evaluation system is relatively simple and easy to operate, greatly simplifies the evaluation process, shortens the evaluation cycle, reduces the evaluation cost, and can provide intuitive and convenient evaluation results for engineering construction and laboratory tests.
[0028] The batching device includes a salt input structure, a water input structure, and a stirrer. The salt input structure and the water input structure are arranged above the batching device and are used to input different amounts of salt and water into a certain mass of dry soil in the batching device through a control device to obtain dry soil with salt and water input; the stirrer is arranged inside the batching device and is used to stir the dry soil with salt and water input to obtain saline soils with different salt contents, realizing precise control of the input amounts of salt and water and further improving the accuracy of the salt content of the prepared saline soil.
[0029] The compaction device includes a temperature control component, a laser testing mechanism, and a hammer. The temperature control component is arranged inside the compaction device and is used to control the temperature inside the compaction device through a control device. The laser testing mechanism is arranged inside the compaction device and is used to measure the height of the compacted saline soil to determine whether the compacted saline soil meets the compaction requirements. The hammer is arranged vertically downward at the top of the compaction device and is used to strike the saline soil with different salt contents at different temperatures, so that the compacted saline soil meets the compaction requirements, obtaining saline soil with different salt contents and different masses after compaction at different temperatures, realizing precise control of the temperature inside the compaction device, and accurately judging whether the compacted saline soil meets the compaction requirements through the laser, further improving the accuracy of the established database. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 is the front view of the internal structure of the batching box in Embodiment 1 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0031] Figure 2 is the left view of the internal structure of the batching box in Embodiment 1 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0032] Figure 3 is the top view of the internal structure of the batching box in Embodiment 1 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0033] Figure 4 is the front view of the internal structure of the compaction box in Embodiment 1 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0034] Figure 5 is the left view of the internal structure of the compaction box in Embodiment 1 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0035] Figure 6 is the top view of the internal structure of the compaction box in Embodiment 1 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0036] Figure 7 is the front view of the internal structure of the salt content analysis test box in Embodiment 1 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0037] Figure 8 is the left view of the internal structure of the salt content analysis test box in Embodiment 1 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0038] Figure 9 is the front view of the internal structure of the oven in Embodiment 2 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0039] Figure 10 It is the left view of the internal structure of the oven in Embodiment 2 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0040] Figure 11 It is the top view of the internal structure of the oven in Embodiment 2 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0041] Figure 12 It is the schematic structural diagram of the device in Embodiment 2 of the test device for the optimum compaction water content of saline soil of the present utility model;
[0042] In the figure, 1 is a batching box, 11 is a salt tank, 12 is a water tank, 13 is a salt metering controller, 14 is a water metering controller, 15 is a first card slot, 16 is a stirrer, 17 is a connecting rod, 18 is a blade, 2 is a compaction box, 21 is a temperature controller, 22 is a compaction hammer, 23 is a laser emitter, 24 is a laser receiver, 25 is a second card slot, 3 is a salt content analysis and test box, 31 is a robotic arm, 32 is a salt content test needle, 4 is an oven, 41 is a standard sieve, 42 is an automatic sieve shaker, 43 is a drying box, 44 is a third card slot, 5 is a computer, 6 is a conveyor belt, 7 is a bucket, and 8 is a mass weighing instrument. Detailed implementation manners
[0043] As cited in the background art, in the prior art, the optimum water content of saline soil depends on manual measurement by traditional measurement methods, resulting in unstable and inaccurate measurement results. Therefore, the present utility model provides a test device for the optimum compaction water content of saline soil, including a control device for controlling the operation of the test device and the acquisition, storage, processing, and output of data, realizing full-automatic operation and control; a batching device for preparing saline soil with different salt concentrations; a compaction device for compacting saline soil with different salt concentrations at different temperatures to obtain different masses of saline soil with different salt concentrations at different temperatures, and obtaining the optimum compaction water content of saline soil with different salt concentrations at different temperatures through processing by the control device and forming a database; a salt content test device for detecting the salt concentration of the saline soil to be detected at a certain temperature, and obtaining the optimum compaction water content of the saline soil to be detected by the control device comparing with the database. The test device for the optimum compaction water content of saline soil of the present utility model uses the control device to control the operation of the test device and the acquisition, storage, processing, and output of data, realizing full-automatic operation and processing. On the one hand, it can speed up the test efficiency, improve the stability and accuracy of the optimum compaction water content test; on the other hand, it saves manpower and also reduces the errors caused by human factors and other factors. When fully automatically measuring the optimum water content of saline soil at the construction site subsequently, it can not only quickly measure the optimum water content of saline soil, improve the construction progress, but also save transporting the saline soil to the laboratory for repeated tests, thus saving costs and improving efficiency.
[0044] Specific Embodiment 1 of the Test Device for the Optimum Compaction Water Content of Saline Soil of the Present Utility Model:
[0045] See Figures 1 to 8 , the test device for the optimum compaction water content of saline soil of the present utility model includes a control device, a batching device, a compaction device, and a salt content test device. The batching device is connected to the control device, the compaction device is connected to the batching device and also connected to the control device, and the salt content test device is connected to the control device. Specifically, the control device, the batching device, the compaction device, and the salt content test device are respectively a computer 5, a batching tank 1, a compaction tank 2, and a salt content analysis and test tank 3. When in use, first, under the condition of the computer 5 controlling the salt content, the batching tank 1 prepares saline soil with different salt concentrations from a certain mass of dry soil, and the computer 5 collects this data; secondly, under the condition of the computer 5 controlling the temperature of the compaction tank 2, the computer 5 controls the temperature in the compaction tank 2 to reach different temperatures, compacts the saline soil with different salt concentrations at different temperatures, obtains different masses of the compacted saline soil with different salt concentrations at different temperatures, and collects this data through the computer 5 and calculates the optimum compaction water content of the saline soil with different salt concentrations at different temperatures, and forms a database to be stored in the computer 5; then, the salt content analysis and test tank 3 automatically detects the salt content of the saline soil at the construction site or the saline soil to be detected in the laboratory at a certain temperature and transmits it to the computer 5, and the computer 5 automatically outputs the optimum compaction water content according to the database.
[0046] As a specific embodiment, the batching tank 1 includes a salt input structure, a water input structure, and a stirrer 16. The salt input structure and the water input structure are arranged above the batching device, and the stirrer 16 is arranged at the upper right position inside the batching device and is composed of a connecting rod 17 and a blade 18. Specifically, the salt input structure includes a salt tank 11 and a salt metering controller 13 arranged below the salt tank 11, and the water input structure includes a water tank 12 and a water metering controller 14 arranged below the water tank 12. When in use, the computer 5 adds a fixed amount of salt (including sodium sulfate, etc.) and water into a certain mass of dry soil through the salt tank 11 and the water tank 12 by controlling the salt metering controller 13 and the water metering controller 14 to obtain the dry soil with input salt and water; then use the stirrer 16 to stir the dry soil with input salt and water to form saline soil with a certain concentration. Repeating the above steps can obtain saline soil with different salt concentrations. The above solution can more accurately and automatically control the addition amount of salt and water, improving the accuracy of the results.
[0047] As a specific embodiment, the compaction box 2 includes a temperature control component, a laser testing mechanism, and a compaction hammer 22. The temperature control component is a temperature controller 21, which is arranged inside the compaction box 2 and connected to the computer 5 through a data cable for controlling the temperature inside the compaction box 2. The laser testing mechanism is arranged inside the compaction box 2. The laser testing mechanism includes a laser emitter 23 and a laser receiver 24. The laser emitter 23 and the laser receiver 24 are arranged at the same height on the inner walls on both sides of the compaction box 2. The laser emitter 23 is installed on the left inner wall of the compaction box 2, and the laser receiver 24 is installed on the right inner wall of the compaction box 2 for measuring the height of the compacted saline soil to determine whether the compacted saline soil meets the compaction requirements. The compaction hammer 22 is arranged downward from the top of the compaction box 2 for hitting saline soil with different salt contents so that the compacted saline soil meets the compaction requirements. At the same time, a mass weighing instrument is arranged inside the compaction box 2 for measuring the mass of the saline soil with different salt contents after compaction at different temperatures, and the computer 5 calculates the optimal compaction moisture content of the saline soil with different salt contents and different masses at different temperatures and forms a database. The above solution further improves the accuracy of the results by precisely controlling the temperature and measuring the compaction height with a laser.
[0048] As a specific embodiment, in this embodiment, the salt content analysis and testing box 3 includes a robotic arm 31 and a salt content testing needle 32. One end of the robotic arm 31 is installed on the inner wall of the salt content analysis and testing box 3, and the salt content testing needle 32 is installed at the other end of the robotic arm 31 for detecting the salt content concentration of the saline soil to be detected at a certain temperature to achieve precise testing of the salt content concentration of the saline soil to be detected.
[0049] Specific embodiment 2 of the testing device for the optimal compaction moisture content of saline soil of the present utility model:
[0050] Based on the above technical concept of the present utility model or on the basis of the specific embodiments of the present utility model introduced above, another embodiment is provided below.
[0051] In this embodiment, the testing device further includes an oven 4. The oven 4 is connected to the computer 5 and connected to the batching box 1. The oven 4 includes a screening mechanism and a drying box 43. The screening mechanism is arranged inside the oven 4. The screening mechanism includes a standard sieve 41 and an automatic sieve shaker 42. The standard sieve 41 and the automatic sieve shaker 42 are arranged opposite to each other for screening out test soil that meets the requirements. The drying box 43 is connected to the screening mechanism for receiving the test soil and drying it to obtain a certain mass of dry soil. At the same time, a mass weighing instrument 8 is also arranged in the oven 4 for measuring the mass of the obtained dry soil.
[0052] In this embodiment, the testing device further includes a conveyor belt 6, which runs through the oven 4, the batching tank 1, the compaction tank 2, and the salt content analysis and testing tank 3, and is used to convey the dry soil in the oven 4 to the batching tank 1 through the computer 5, and then convey the saline soil with different salt contents in the batching tank 1 to the compaction tank 2 through the computer 5. At the same time, it is used to convey the saline soil to be detected to the salt content analysis and testing tank 3 through the computer 5. Specifically, a bucket 7 is fixedly installed on the conveyor belt 6. When the bucket 7 on the conveyor belt 6 is in the oven 4, the bucket 7 is located at the lower left corner of the oven 4, the standard sieve 41 is directly above the bucket 7, the automatic sieve shaker 42 is below the bucket 7, and the third card slot 44 in the oven 4 is located in the middle of the oven 4, and is used to fix the bucket 7 and the drying box 43 behind the third card slot 44 for loading a certain mass of dry soil. When the bucket 7 on the conveyor belt 6 is in the batching tank 1, there is a first card slot 15 directly below each of the salt tank 11 and the water tank 12 for fixing the bucket 7 to ensure that salt and water smoothly enter the bucket 7 for loading saline soil with different salt contents. When the bucket 7 on the conveyor belt 6 is in the compaction tank 2, there is a second card slot 25 in the center of the compaction tank 2 for fixing the bucket 7, and the compaction hammer 22 is installed directly above it for loading the compacted soil.
[0053] The usage method of the testing device for the optimum compaction water content of saline soil of the present utility model is as follows:
[0054] First, there is a standard sieve 41 above the bucket 7 in the oven 4. Through the automatic sieve shaker 42, the test soil can be directly screened out and loaded into the bucket 7 when adding soil; the computer 5 controls the conveyor belt 6 to send the bucket 7 containing the test soil to the third card slot 44 to be clamped, and the drying box 43 is used to dry the test soil. At a constant temperature of 105 - 110 °C (according to the "Highway Geotechnical Test Procedures" (JTG 3430 - 2020), the drying time for fine-grained soil shall not be less than 8 h; for sandy soil and gravelly soil, it shall not be less than 6 h; for soil containing more than 5% organic matter or soil containing gypsum, the temperature should be controlled within the range of 60 - 70 °C, and the drying time should not be less than 24 h). Subsequently, it is cooled in the drying box 43 for 0.5 - 1 h, and finally the mass of the dry soil m is obtained on the mass weighing instrument 8. The mass of the dry soil m should make the compacted specimen slightly higher than 1 / 3 of the bucket height, and the computer 5 collects the mass data of the dry soil.
[0055] Secondly, the computer 5 controls the conveyor belt 6 to send the bucket 7 filled with dry soil into the batching tank 1 and clamp it with the first card slot 15. The salt tank 11 and the water tank 12 above it add a certain amount of salt (including sodium sulfate, etc.) and water to the dry soil under the control of the salt quantitative controller 13 and the water quantitative controller 14 in the computer 5, and then form saline soil with a certain salt content under the stirring of the stirrer 16;
[0056] Next, the computer 5 controls the conveyor belt 6 to send the bucket 7 filled with saline soil of a certain concentration into the compaction box 2. The temperature controller 21 makes the temperature inside the compaction box 2 reach a certain value under the control of the computer 5. The bucket 7 is clamped by the second card slot 25, and the hammer 22 above it freely falls and strikes 98 times. The laser generators and laser receivers 24 on both sides of the compaction box 2 detect by laser whether the sample is no higher than 6 mm above the top surface of the cylinder after 98 strikes. If it meets the requirements, it enters the next step; otherwise, it strikes again until it meets the requirements. Finally, the qualified saline soil is weighed on the mass weighing instrument to obtain m d , and the computer 5 collects the mass data of the wet soil.
[0057] The data obtained above is calculated by the computer 5 to obtain the optimal compaction moisture content of saline soil with a certain salt content concentration at a certain temperature. The calculation formula is:
[0058]
[0059] In the formula: W is the moisture content %; m is the mass of dry soil; m d is the mass of the wet soil after compaction.
[0060] Among them, the calculation method of the computer 5 can be automatic calculation. That is, after the computer 5 automatically collects the dry soil mass data and the wet soil mass data, it automatically calculates according to the above calculation formula to obtain the optimal compaction moisture content of saline soil with a certain salt content concentration at a certain temperature.
[0061] The calculation method of the computer 5 can also be manual calculation. That is, after the computer 5 automatically collects the dry soil mass data and the wet soil mass data, according to the above calculation formula, the calculator in the computer 5 is used for manual calculation to obtain the optimal compaction moisture content of saline soil with a certain salt content concentration at a certain temperature.
[0062] Repeat the above steps, compact the saline soil with different salt content concentrations at different temperatures, and the optimal compaction moisture content of saline soil with different salt content concentrations at different temperatures can be obtained. Through the preset software of the computer 5, a database is formed and stored in the computer 5.
[0063] Finally, when testing the saline soil at the construction site or the saline soil to be detected in the laboratory, the saline soil to be detected is put into the bucket 7 and sent into the salt content analysis and testing box 3 by the conveyor belt 6. The salt content of the saline soil is automatically detected by the salt content test needle (32) and transmitted to the computer 5. The computer 5 automatically outputs the optimal compaction moisture content according to the database.
[0064] Through the description of the specific embodiments of the test device for the optimum compaction moisture content of saline soil of the present utility model above, it can be seen that the test device for the optimum compaction moisture content of saline soil of the present utility model includes a control device for controlling the operation of the test device and the acquisition, storage, processing and output of data; a batching device for preparing saline soil with different salt contents; a compaction device for compacting saline soil with different salt contents at different temperatures, obtaining the optimum compaction moisture content of saline soil with different salt contents at different temperatures through the control device, and forming a database; a salt content test device for detecting the salt content of the saline soil to be tested at a certain temperature, and obtaining the optimum compaction moisture content of the saline soil to be tested by comparing with the database through the control device. The test device for the optimum compaction moisture content of saline soil of the present utility model uses the control device to control the operation of the test device and the acquisition, storage, processing and output of data, realizing fully automated operation and processing. On the one hand, it can speed up the test efficiency, improve the stability and accuracy of the optimum compaction moisture content test; on the other hand, it saves manpower and also reduces the errors caused by human factors and other factors. When fully automatically measuring the optimum moisture content of saline soil at the construction site in the future, it can not only quickly measure the optimum moisture content of saline soil, improve the construction progress, but also save the transportation of saline soil to the laboratory for repeated tests, thus saving costs and improving efficiency.
[0065] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. All equivalent structural changes made by using the description and drawings of the present utility model shall be equally included in the protection scope of the present utility model.
Claims
1. A test device for the optimal compaction moisture content of saline soil, characterized in that It includes a control device, a batching device, a compaction device, and a salt content testing device. The control device is used to control the operation of the testing device and the acquisition, storage, processing, and output of data. The batching device is connected to the control device and is used to prepare dry soil of a certain mass into saline soil with different salt concentrations under the condition of the control device controlling the salt content. The compaction device is connected to the batching device and to the control device. Under the condition of the control device controlling the temperature of the compaction device, it is used to compact saline soil with different salt concentrations at different temperatures to obtain different masses of saline soil with different salt concentrations after compaction at different temperatures. Through the processing of the control device, the optimum compaction moisture content of saline soil with different salt concentrations at different temperatures is obtained, and a database is formed. The salt content testing device is connected to the control device and is used to detect the salt concentration of the saline soil to be tested at a certain temperature. Through the control device, the optimum compaction moisture content of the saline soil to be tested is obtained by comparing with the database.
2. The test device for the optimum compaction water content of saline soil according to claim 1, wherein, The batching device includes a salt input structure, a water input structure, and a stirrer (16). The salt input structure and the water input structure are arranged above the batching device and are used to input different amounts of salt and water into a certain mass of dry soil in the batching device through the control device to obtain dry soil with input salt and water. The stirrer (16) is arranged inside the batching device and is used to stir the dry soil with input salt and water to obtain saline soil with different salt concentrations.
3. The test device for the optimum compaction water content of saline soil according to claim 2, wherein The salt input structure includes a salt tank (11) and a salt metering controller (13) arranged below the salt tank (11), and the water input structure includes a water tank (12) and a water metering controller (14) arranged below the water tank (12).
4. The test device for the optimum compaction water content of saline soil according to claim 3, characterized in that, The compaction device includes a temperature control component, a laser testing mechanism, and a hammer (22). The temperature control component is arranged inside the compaction device and is used to control the temperature inside the compaction device through the control device. The laser testing mechanism is arranged inside the compaction device and is used to measure the height of the compacted saline soil to determine whether the compacted saline soil meets the compaction requirements. The hammer (22) is arranged downward at the top of the compaction device and is used to strike saline soil with different salt concentrations at different temperatures so that the compacted saline soil meets the compaction requirements, and different masses of saline soil with different salt concentrations after compaction at different temperatures are obtained.
5. The test device for the optimum compaction water content of saline soil according to claim 4, characterized in that, The laser testing mechanism includes a laser emitter (23) and a laser receiver (24). The laser emitter (23) and the laser receiver (24) are arranged at the same height on the inner walls on both sides of the compaction device respectively and are used to measure the height of the compacted saline soil to determine whether the compacted saline soil meets the compaction requirements.
6. The test device for the optimum compaction water content of saline soil according to claim 5, characterized in that, The salt content testing device includes a robotic arm (31) and a salt testing needle (32). One end of the robotic arm (31) is installed on the inner wall of the salt content testing box, and the salt testing needle (32) is installed at the other end of the robotic arm (31) and is used to detect the salt concentration of the saline soil to be tested at a certain temperature.
7. The test device for the optimum compaction water content of saline soil according to any one of claims 1-6, characterized in that, The testing device also includes an oven (4). The oven (4) is connected to the control device and to the batching device and is used to screen and dry the soil for the test to obtain a certain mass of dry soil.
8. The test device for the optimum compaction water content of saline soil according to claim 7, characterized in that, The oven (4) includes a screening mechanism and a drying chamber (43). The screening mechanism is disposed inside the oven (4) and is used for screening out test soil meeting the requirements. The drying chamber (43) is connected to the screening mechanism and is used for receiving the test soil and drying it to obtain a certain mass of dry soil.
9. The test device for the optimum compaction water content of saline soil according to claim 8, characterized in that, The testing device further includes a conveyor belt (6). The conveyor belt (6) passes through the oven (4), the batching device, the compaction device, and the salt content testing device, and is used for conveying the dry soil in the oven (4) to the batching device through the control device, and then conveying the saline soil with different salt concentrations in the batching device to the compaction device. At the same time, it is used for conveying the saline soil to be detected to the salt content testing device through the control device.
10. The test device for the optimal compaction water content of saline soil according to claim 9, wherein, The testing device further includes mass testers disposed inside the oven (4) and the compaction device, and is used for detecting the mass of the dry soil in the oven (4) and the mass of the saline soil with different salt concentrations in the compaction device after compaction at different temperatures.