Device for testing melt sinking coefficient of coarse-particle salinized soil in plateau area

Abstract

The utility model relates to salinized soil melt sinking performance detection, in particular to a plateau area coarse particle salinized soil melt sinking coefficient testing device. The servo mechanism in the testing device can accurately control the pressure applied to the soil sample, so that the consistency and repeatability of testing conditions are ensured. Comprising a testing device cabinet body, a storage unit used for storing to-be-tested coarse-particle saline soil is arranged in the cabinet body, a pressing unit used for pressing the coarse-particle saline soil is arranged on the cabinet body and above the storage unit, and the pressing unit is further connected with a water supply unit; wherein the pressing unit comprises an electric push rod installed at the top of the cabinet body, a push rod body of the electric push rod penetrates through a through hole in the top of the cabinet body, and a piston part is arranged at the penetrating-out end of the push rod body; the piston part comprises a connecting rod part connected with the end part of the push rod body and a piston head connected with the connecting rod part; a water passing joint is arranged on the side wall of the connecting rod part; and the water passing joint is connected with a water supply unit.

Description

Technical Field

[0001] The utility model relates to saline soil solubility detection, in particular to a device for testing the solubility coefficient of coarse-grained saline soil in plateau areas. Background Art

[0002] Saline soil refers to soil containing a large amount of soluble salts. It is a general term for saline soil, alkaline soil, and various salinized and alkaline soils. Saline soil harms plant growth and changes soil properties. It is mainly distributed in low-lying basins and plains in the arid northwest region, the North China Plain, and some lake basins and depressions on the Qinghai-Tibet Plateau. Saline soil has the characteristics of dissolution, salt swelling, or corrosion. The plateau area is dominated by coarse-grained saline soil, which has a significant impact on agricultural production, engineering construction, and other human activities.

[0003] In the coarse-grained saline soil area, due to the waterlogging of the foundation, the salts dissolve in water, which significantly reduces the strength and causes dissolution, thus causing serious instability of the foundation and unnecessary economic losses. The dissolution coefficient is an indicator for evaluating the dissolution of saline soil, which is generally obtained by the water immersion compression test method.

[0004] As a testing device, the saline soil dissolution coefficient test device generally relies on manual operation, and technicians are required to directly intervene in multiple links from sample preparation, equipment calibration to data analysis. This high degree of manual dependence means that the technical proficiency, experience level and even understanding of the test procedures of different operators during the test process may become uncertain factors that affect the stability and accuracy of the test results, and ultimately affect the test results and evaluation effects. Summary of the invention

[0005] The utility model aims at the defects of the prior art and provides a device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme, including a test device cabinet, in which a storage unit for storing the coarse-grained saline soil to be tested is arranged, and a compacting unit for compacting the coarse-grained saline soil is arranged on the cabinet and above the storage unit, and the compacting unit is also connected to a water supply unit.

[0007] Wherein, the clamping unit comprises an electric push rod installed on the top of the cabinet, the push rod body of the electric push rod passes through the through hole in the top of the cabinet, and a piston part is arranged at one end of the push rod.

[0008] The piston part includes a connecting rod part connected to the end of the push rod body and a piston head connected to the connecting rod part; a water connection joint is provided on the side wall of the connecting rod part; the water connection joint is connected to the water supply unit; a main pipeline connected to the water connection joint is provided in the connecting rod part, and a plurality of branch pipe channels connected to the main pipeline are provided in the piston head, and each branch pipe channel is provided with a plurality of water outlets connected to it.

[0009] Furthermore, a ruler is provided on the top of the cabinet, and a guide sleeve is provided on the top of the cabinet and on one side of the ruler; a benchmark rod is provided on the top of the piston head and on one side of the connecting rod, the bottom of the benchmark rod is fixedly connected to the piston head, and the top of the benchmark rod passes through the through hole of the cabinet and the guide sleeve in sequence, and extends out of the guide sleeve, and a sliding sleeve is provided on the extended end, the sliding sleeve is fixedly connected to the benchmark rod, and a pointer is connected to the outside of the sliding sleeve, and the pointer points to the ruler.

[0010] Furthermore, the electric push rod is a servo electric push rod.

[0011] Furthermore, the storage unit comprises a glass cup body, wherein the glass cup body adopts a grille as a partition plate, a plurality of water-permeable holes are provided in the partition plate, a cavity is formed between the partition plate and the bottom of the cup, and the bottom of the cup is open.

[0012] Furthermore, the water supply unit includes a water reservoir for storing water arranged on the top of the cabinet, and the water reservoir is connected to the water connection joint through a water supply hose; and the water supply hose is located in the cabinet.

[0013] Furthermore, a switch valve is installed on the water supply hose.

[0014] Furthermore, the connecting rod portion is connected to the push rod body via a connecting piece.

[0015] Furthermore, the number of the branch pipe channels is at least 3, and the number of water outlets on each branch pipe channel is at least 4.

[0016] Furthermore, the water outlet is located above the storage unit.

[0017] Furthermore, a water storage bottle is placed in the cabinet for storing spare water; and two boss grooves are opened at the bottom of the cabinet: a first boss groove and a second boss groove; the first boss groove is used to place the water storage bottle, and the second boss groove is used to place the storage unit.

[0018] Compared with the prior art, the utility model has beneficial effects.

[0019] The servo mechanism in the test device of the utility model can accurately control the pressure applied to the soil sample, ensuring the consistency and repeatability of the test conditions. In addition, in order to simulate the load effect that the soil layer bears under actual engineering or natural conditions, the compaction process can explore the behavior of the soil under different pressure levels by setting different load values. The controllability of the compaction time further ensures the precise regulation of the test conditions. In this way, by adjusting and recording the height change of the soil sample under different loads and times (the height change of the soil sample can be measured by the change in the scale indication), the dissolution coefficient can be calculated. The purpose of stable and accurate testing is achieved.

[0020] In addition, the piston head is provided with evenly distributed water outlets, which can quickly and evenly immerse the test saline soil layer in the glass cup to achieve the purpose of uniform immersion. In the test device, uniform immersion can avoid test errors caused by local oversaturation or insufficient immersion, and ensure that the entire soil sample reacts under the same hydrological conditions. This condition control is crucial to obtain an accurate dissolution coefficient. This makes the test structure of the test device more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the utility model is not limited to the following descriptions.

[0022] Figure 1 It is a three-dimensional view of a device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas (door structure omitted).

[0023] Figure 2 It is a three-dimensional view of a device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas.

[0024] Figure 3 The front view of a device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas.

[0025] Figure 4 The invention is a three-dimensional view of a storage unit of a device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas.

[0026] Figure 5 The present invention is a cross-sectional view of a storage unit of a device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas.

[0027] Figure 6 The front view of the piston head of a device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas.

[0028] Figure 7 It is a three-dimensional view of the piston head of a device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas.

[0029] Figure 8 The figure is a cross-sectional view of the piston head of a device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas.

[0030] Fig. 9 This is a schematic diagram of the test device from another angle.

[0031] Fig.10 It is a schematic diagram of the test device compacting the saline soil.

[0032] In the figure, 1 is a housing unit, 2 is a control unit, 3 is a pressing unit, 4 is a water supply unit, and 5 is a storage unit;

[0033] 101 is a cabinet, 102 is a door, 103 is a fixed base, 104 is a water storage bottle, 105 is a partition, and 106 is a slot;

[0034] 201 is a display panel, 202 is a button, 203 is a battery unit, and 204 is a control panel;

[0035] 301 is a servo motor, 302 is an electric push rod, 303 is a scale, 304 is a water connection joint, 305 is a piston head, 306 is a connecting rod, 307 is a benchmark, 308 is a sliding sleeve, 309 is a pointer, 310 is a guide sleeve, 311 is a water outlet, 312 is a main pipeline, and 313 is a push rod body;

[0036] 401 is a water reservoir, 402 is a switch valve, and 403 is a water supply hose;

[0037] 501 is a glass cup body, 502 is a grille, 503 is a water outlet, and 504 is a cavity body. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and beneficial effects of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments.

[0039] like Figure 1-10 As shown, a device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas comprises a test device cabinet (i.e., a shell unit 1), a storage unit 501 for storing the coarse-grained saline soil to be tested is arranged in the cabinet 101, a pressing unit 303 is arranged on the cabinet 101 and above the storage unit 501, and the pressing unit 303 is also connected to a water supply unit 401; wherein, the pressing unit 303 comprises an electric push rod 302 installed on the top of the cabinet 101, a push rod body of the electric push rod 302 passes through a through hole in the top of the cabinet 101, and a piston part is arranged on the protruding end; the piston part comprises a connecting rod part connected to the end of the push rod body, and a piston head 305 connected to the connecting rod part; wherein, the electric push rod 302 adopts a servo motor 301, and the connecting rod part is connected to the push rod body through a connecting piece.

[0040] A water connection joint 304 is provided on the side wall of the connecting rod; the water connection joint 304 is connected to the water supply unit 401; a main pipeline 312 connected to the water connection joint 304 is opened in the connecting rod, and a plurality of branch pipe channels connected to the main pipe 312 are opened in the piston head 305, and each branch pipe channel is distributed with a plurality of water outlets 311 connected thereto.

[0041] Embodiment 1: A scale 303 is provided on the top of the cabinet 101, and a guide sleeve 309 is provided on the top of the cabinet 101 and on one side of the scale 303; a benchmark is provided on the top of the piston head 305 and on one side of the connecting rod, and the bottom of the benchmark is fixedly connected to the piston head 305. The top of the benchmark passes through the through hole of the cabinet 101 and the guide sleeve 309 in turn, and then extends out of the guide sleeve 309, and a sliding sleeve is provided on the extended end, and the sliding sleeve is fixedly connected to the scale, and a pointer is connected to the outside of the sliding sleeve, and the pointer points to the scale 303 (for scale reading). The change in the reading of the scale 303 before and after the electric push rod 302 performs the compaction of the saline soil is used to calculate the dissolution coefficient. Specifically, the coarse-grained saline soil is compacted by controlling the piston part, and then the saline soil is injected with water through the piston head 305. During the water injection process, a constant force is applied to the upper end of the soil, and the stroke change of the piston part during the water injection process is observed to test the dissolution coefficient.

[0042] Embodiment 2, water supply unit 401: the number of branch pipe channels is at least 3, and the number of water outlets 311 on each branch pipe channel is at least 4. The water outlet 311 is located above the storage unit 501; it is used for the infiltration and soaking of the coarse-grained saline soil in the storage unit 501. The water supply unit 401 includes a water reservoir 401 for storing water arranged on the top of the cabinet 101, and the water reservoir 401 is connected to the water connection joint 304 through a water supply hose 403; and the water supply hose 403 is located in the cabinet 101. A switch valve 402 is installed on the water supply hose 403 to adjust the water supply.

[0043] Embodiment 3, the storage unit 501 includes a glass cup body, which uses a grille 502 as a partition plate, and a plurality of water-permeable holes 503 are provided in the partition plate; and a cavity is formed between the partition plate and the bottom of the cup; the partition plate is detachably placed in the cup body, for example, it can be frictionally connected, or a protrusion is provided on the inner wall of the cup body, and the partition plate is placed on the protrusion; and the bottom of the cup is open. In addition, a water storage bottle 104 is placed in the cabinet 101 for storing spare water; and a fixed base 103 is provided at the bottom of the cabinet 101, and two boss grooves are provided on the fixed base 103: a first boss groove and a second boss groove; the first boss groove is used to place the water storage bottle 104, and the second boss groove is used to place the storage unit 501 (i.e., the glass cup body). And a slot is provided in the center of the second groove.

[0044] Embodiment 4: The cabinet 101 is provided with a door 102, and the top of the cabinet 101 is also provided with an operating interface of the control unit (i.e., a display panel 201), buttons, etc., for controlling the electric push rod 302, the water supply switch valve 402, etc.; the cabinet 101 is divided into two left and right areas by a partition 105, wherein the storage unit 501 and the water storage bottle 104 are located in the left area, and the control panel 204 of the control unit is located in the right area, and a battery unit 203 is also provided in the right area for power supply.

[0045] Combined with the accompanying drawings and technical solutions, the use process of the utility model is described as follows:

[0046] A. First, take a certain amount of coarse-grained saline soil through the glass cup 501. The best amount of saline soil is 2 / 3 of the capacity of the glass cup 501.

[0047] B. Place the glass cup body 501 with coarse-grained saline soil on the fixed base 103; the upper surface of the fixed base 103 is provided with two concave platforms (convex platform grooves) for conveniently fixing the water storage bottle 104 (for spare water storage) and the glass cup body 501.

[0048] C. A hollow cavity 504 is provided at the bottom of the glass cup 501 to provide a space for water seeping out of the granular saline soil. A through hole is provided at the center of the concave platform to facilitate rapid discharge of the seeping water.

[0049] D. Then, pure water is added to the water reservoir 401 through the (covered) water storage bottle 104. The amount added is set according to actual needs. The water reservoir 401 has scale lines to facilitate observation of the change in the amount of water stored in the water reservoir 401. The water storage bottle 104 is used as a spare water storage area. Some water can be stored in the cabinet 101 in advance, which is convenient for conducting experiments anytime and anywhere.

[0050] E. The preparations are ready. The next step is to start the equipment and power on the servo motor 301.

[0051] F. Manually set the thrust of the electric push rod 302 through the control panel 201, and drive the piston head 305 through the electric extension rod (i.e., the push rod body 313) to compact the coarse-grained saline soil in the glass cup body 501. The pressure and the number of compactions can be set.

[0052] G. After the compaction process is completed, the data value indicated by the pointer on the scale 303 is read and recorded (this data value is the indicated value when the saline soil in the glass cup body 501 is compacted).

[0053] H. The switch valve 402 is controlled to open by the control system 204, and the water in the water reservoir 401 reaches the main pipeline 312 through the water supply hose 403, and flows out from the water outlet 311 into the saline soil in the glass cup body 501 (a plurality of water outlets 311 are evenly distributed on the lower surface of the piston head 305, and the water outlets 311 are interconnected with the main pipeline 312. The plurality of water outlets 311 are provided to facilitate the comprehensive penetration and immersion of water into the saline soil in the glass cup body 501 without dead ends). The water penetrates downward from the upper surface of the saline soil in the glass cup body 501, flows out through the water permeable holes 503 on the grille 502 of the glass cup body 501, and flows out through the water outlet.

[0054] I. At this time, the thrust of the electric push rod 302 can be manually set through the control panel 201 to apply a specific pressure to the test soil layer and observe the settlement of the saline soil during the water injection process.

[0055] J. While maintaining the pressure unchanged, let the saline soil layer be immersed in water, monitor and record the data value indicated by the pointer on the scale 303 at this time, and make a record to prepare for the calculation of the saline soil dissolution coefficient.

[0056] K. After the test is completed and data collection is completed, the test materials are manually disposed of and the equipment power is turned off.

[0057] Finally, the utility model is suitable for plateau environments:

[0058] 1. The device is compactly designed and uses water storage bottles to pre-store water, which not only saves space but also allows experiments to be carried out flexibly in plateau areas where water resources are scarce, without relying on external water sources, thus improving the immediacy and convenience of the experiment.

[0059] 2. The electric push rod can accurately control the pressure and frequency during the compaction process, as well as the pressure applied during the water injection process. This high degree of controllability is particularly critical for obtaining accurate and repeatable experimental results on the plateau where environmental conditions are complex and changeable.

[0060] 3. The entire testing process is carried out in a sealed glass cup, which not only reduces the impact on the fragile ecological environment of the plateau, but also has a clear operation process and is easy for technical personnel to execute. It can be effectively implemented even in remote plateau areas with limited resources.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. Therefore, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope defined by the claims of the present invention.

Claims

1. A device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas, comprising a test device cabinet, characterized in that: The cabinet is provided with a storage unit for storing the coarse-grained saline soil to be tested, and a compacting unit for compacting the coarse-grained saline soil is provided on the cabinet and above the storage unit, and the compacting unit is also connected to a water supply unit; Wherein, the pressing unit comprises an electric push rod installed on the top of the cabinet, the push rod body of the electric push rod passes through the through hole on the top of the cabinet, and a piston part is arranged at one end of the push rod; The piston part includes a connecting rod part connected to the end of the push rod body and a piston head connected to the connecting rod part; a water connection joint is provided on the side wall of the connecting rod part; the water connection joint is connected to the water supply unit; a main pipeline connected to the water connection joint is provided in the connecting rod part, and a plurality of branch pipe channels connected to the main pipeline are provided in the piston head, and each branch pipe channel is provided with a plurality of water outlets connected to it.

2. The device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas according to claim 1 is characterized by: A ruler is provided on the top of the cabinet, and a guide sleeve is provided on the top of the cabinet and on one side of the ruler; a benchmark rod is provided on the top of the piston head and on one side of the connecting rod, the bottom of the benchmark rod is fixedly connected to the piston head, the top of the benchmark rod passes through the cabinet through hole and the guide sleeve in sequence, and extends out of the guide sleeve, and a sliding sleeve is provided on the extended end, the sliding sleeve is fixedly connected to the benchmark rod, and a pointer is connected to the outside of the sliding sleeve, and the pointer points to the ruler.

3. The device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas according to claim 1 is characterized by: The electric push rod adopts a servo electric push rod.

4. The device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas according to claim 1 is characterized by: The storage unit comprises a glass cup body, wherein the glass cup body adopts a grid as a partition plate, a plurality of water-permeable holes are provided in the partition plate, a cavity is formed between the partition plate and the cup bottom, and the cup bottom is open.

5. The device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas according to claim 1 is characterized by: The water supply unit comprises a water reservoir arranged on the top of the cabinet for storing water, and the water reservoir is connected with a water connection joint through a water supply hose.

6. The device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas according to claim 5, characterized in that: A switch valve is installed on the water supply hose.

7. The device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas according to claim 1 is characterized by: The connecting rod portion is connected to the push rod body through a connecting piece.

8. The device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas according to claim 1 is characterized by: The number of the branch pipe channels is at least 3, and the number of water outlets on each branch pipe channel is at least 4.

9. The device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas according to claim 8, characterized in that: The water outlet is located above the storage unit.

10. A device for testing the dissolution coefficient of coarse-grained saline soil in plateau areas according to any one of claims 1 to 9, characterized in that: A water storage bottle is placed in the cabinet for storing spare water; and two boss grooves are opened at the bottom of the cabinet: a first boss groove and a second boss groove; the first boss groove is used to place the water storage bottle, and the second boss groove is used to place the storage unit.

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