Unsaturated loess moisture migration law test model

Abstract

The utility model relates to the field of soil moisture migration tests, and discloses an unsaturated loess moisture migration law test model which comprises a first storage cylinder, an adjusting assembly is arranged on the top of the first storage cylinder, a sliding block is connected into the first storage cylinder in a sliding mode, and a plurality of sensors which are evenly distributed are installed on the sliding block. The bottom of the storage cylinder I is in threaded connection with a bottom cover; and the adjusting assembly comprises a top cover, the top cover is in threaded connection to the top of the first storage barrel, a fixing rod is fixedly connected to the middle of the top end of the top cover, a rotating cover is rotationally connected to the periphery of the fixing rod, and a plurality of evenly-distributed second ventilation grooves are formed in the top of the top cover. According to the utility model, real-time monitoring of multiple layers of soil is realized through the slide block sensor, and accurate moisture and humidity data are provided; meanwhile, air circulation is adjusted through the rotary cover, the experimental environment is flexibly controlled, and the water migration research requirements under different ventilation conditions are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of soil moisture migration test, especially relates to a non saturated loess moisture migration rule test model. BACKGROUND

[0002] At present, in the geological engineering and soil environment scientific research, the moisture migration law of loess area is an important research topic, especially the process of moisture migration in unsaturated loess has important influence on hydrological cycle, ecological protection and geological disaster prevention. In order to study the moisture migration behavior in unsaturated loess, the test model is used to simulate the moisture migration characteristics of soil under natural conditions.

[0003] The test model structure of prior art is relatively simple, only has basic soil container and measuring function, lacks flexible stratified setting and accurate environmental control means, in these models, the soil layer structure is fixed, it is difficult to adjust the soil layer of different depth and density, and the stratified phenomenon of unsaturated loess cannot be accurately simulated. In addition, the existing model also has the deficiency in controlling air circulation, lacks effective ventilation adjustment mechanism, which leads to the difficulty in studying the moisture migration law under different ventilation conditions, therefore, the prior art cannot meet the accurate simulation demand of the moisture migration law in unsaturated loess, and the authenticity and effectiveness of experimental data are affected, therefore, the non saturated loess moisture migration rule test model is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortage, the utility model provides a non saturated loess moisture migration rule test model, aims at improving the problem that the test model in prior art is difficult to simulate the complex stratified structure and air circulation control of unsaturated loess.

[0005] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0006] A non saturated loess moisture migration rule test model, including the storage cylinder one, the storage cylinder one top is provided with the adjusting assembly, the storage cylinder one inside is connected with the sliding block of sliding, the sliding block is installed with a plurality of evenly distributed sensors, the storage cylinder one bottom is connected with the bottom cover of screw thread,

[0007] The adjusting assembly includes the top cover, the top cover is connected in the storage cylinder one top of screw thread, the top cover top is fixedly connected with the fixed rod of middle part, the fixed rod outer periphery is rotatably connected with the rotary cover, the top cover top is provided with a plurality of evenly distributed air grooves two, the rotary cover top is provided with a plurality of evenly distributed air grooves one, air groove one and air groove two cooperate with each other, realize the adjustment of air flow,

[0008] As the further description of the above technical scheme:

[0009] The bottom of the storage cylinder one is threadedly connected with a storage cylinder two, the top of the storage cylinder two is provided with a partition plate, and the bottom of the storage cylinder two is threadedly connected with a bottom cover, and the increase of the storage cylinder two can expand the storage space.

[0010] As a further description of the above technical scheme:

[0011] The bottom of the storage cylinder one is threadedly connected with a storage cylinder two, the top of the storage cylinder two is provided with a partition plate, and the bottom of the storage cylinder two is threadedly connected with a bottom cover, and the increase of the storage cylinder two can expand the storage space.

[0012] As a further description of the above technical scheme:

[0013] The inside of the storage cylinder one and the storage cylinder two is provided with a sliding groove, and the sliding block slides in the sliding groove, so that the sliding block stably slides.

[0014] As a further description of the above technical scheme:

[0015] The top of the sliding block is fixedly connected with a lifting block, and the sliding position of the sliding block in the storage cylinder one can be adjusted through the lifting block, so that the detection position of the sensor is adjusted.

[0016] As a further description of the above technical scheme:

[0017] The partition plate is movably installed on the top of the storage cylinder two, is used for separating the space between the storage cylinder one and the storage cylinder two, and is adjusted in position as required.

[0018] As a further description of the above technical scheme:

[0019] The sensor can detect the environmental parameters in the storage cylinder one, including but not limited to temperature, humidity or air pressure.

[0020] As a further description of the above technical scheme:

[0021] The rotating cover can adjust the alignment degree of the air permeation groove one and the air permeation groove two through rotation, so that the air circulation in the storage cylinder one is accurately controlled.

[0022] The utility model has the following beneficial effects:

[0023] 1、The utility model discloses a model's layered design, sliding block adjustment and sensor monitoring function can simulate the water migration process in the unsaturated loess under the real geological condition, and the sensor on the sliding block can collect the data of water, humidity and temperature in real time in different heights and different soil layer structures, provides accurate experimental data support for the water migration behavior between soil layers, and especially the adjustability of the partition plate makes the layered simulation more flexible, so that the experimental result is closer to the water migration rule in the natural condition.

[0024] 2、The utility model discloses a rotating cover and the air vent groove one and the air vent groove two on the top cover, the application can effectively control the air circulation condition in the experimental environment. The alignment degree of the air vent groove can simulate different ventilation environment, and the experimental personnel can study the influence of ventilation condition on the moisture evaporation rate and the moisture migration of soil layer, and the design can adapt to different experimental needs, provide more accurate environment simulation, and help to obtain reliable experimental data. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A three-dimensional schematic view of a non-saturated loess moisture migration rule test model is provided for the utility model;

[0026] Figure 2 A structure diagram of a storage cylinder one of the non-saturated loess moisture migration rule test model is provided for the utility model;

[0027] Figure 3 A structure diagram of a pressing plate of the non-saturated loess moisture migration rule test model is provided for the utility model;

[0028] Figure 4 A structure diagram of a bottom cover of the non-saturated loess moisture migration rule test model is provided for the utility model;

[0029] Figure 5 A structure diagram of a sliding block of the non-saturated loess moisture migration rule test model is provided for the utility model;

[0030] Figure 6 A structure diagram of a lifting block of the non-saturated loess moisture migration rule test model is provided for the utility model.

[0031] Legend:

[0032] 1, rotating cover, 2, air vent groove one, 3, fixed rod, 4, top cover, 5, air vent groove two, 6, connecting rod, 7, pressing plate, 8, storage cylinder one, 9, partition, 10, sliding block, 11, storage cylinder two, 12, bottom cover, 13, sliding groove, 14, sensor, 15, lifting block. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] Reference Figures 1-6The utility model provides a kind of embodiment: a kind of non-saturated loess water transport rule test model, including storage cylinder one 8, the top of storage cylinder one 8 is provided with adjusting assembly, slidingly connected with slider 10 in the inside of storage cylinder one 8, slider 10 is equipped with multiple evenly distributed sensors 14, the bottom of storage cylinder one 8 is screw thread connection has bottom cover 12;Adjusting assembly includes top cover 4, top cover 4 is screw thread connection in the top of storage cylinder one 8, top cover 4 top end middle part is fixedly connected with fixed rod 3, fixed rod 3 outer periphery is rotatably connected with rotary cover 1, top cover 4 top is opened with multiple evenly distributed air grooves two 5, rotary cover 1 top is opened with multiple evenly distributed air grooves one 2, air groove one 2 and air groove two 5 are mutually matched, realize the regulation of airflow.The bottom of storage cylinder one 8 and storage cylinder two 11 are screw thread connection has bottom cover 12, ensure that soil sample and moisture do not from bottom leakage in experimental process, guarantee the airtightness of experimental environment.The top of storage cylinder one 8 is provided with adjusting assembly, for control internal air circulation.The adjusting assembly is composed of top cover 4 and rotary cover 1, top cover 4 is screw thread connection in the top of storage cylinder one 8, and top cover 4 is equipped with evenly distributed air grooves two 5;Rotary cover 1 top is opened air groove one 2, can pass through the rotation of adjusting air groove one 2 and air groove two 5 and control internal air circulation, adapt to different experimental conditions

[0035] Refer to Figure 3 The bottom of storage cylinder one 8 is screw thread connection has storage cylinder two 11, and the top of storage cylinder two 11 is provided with baffle 9, and the bottom of storage cylinder two 11 is screw thread connection has bottom cover 12, and the increase of storage cylinder two 11 can expand storage space.Storage cylinder two 11 can be screw thread connection to the bottom of storage cylinder one 8, form higher experimental container, suitable for the experimental demand of larger volume.The top of storage cylinder two 11 is provided with baffle 9, for separating storage cylinder one 8 and storage cylinder two 11, forms different soil layer structure, so as to simulate the stratification phenomenon in natural geology, so that experimental condition is closer to actual stratum distribution, applicable to the influence of different soil layer structure on water transport.

[0036] Refer to Figure 3 The bottom side middle part of top cover 4 is fixedly connected with connecting rod 6, and the bottom of connecting rod 6 is fixedly connected with pressing plate 7, and pressing plate 7 is arranged in the inside of upper portion of storage cylinder one 8, can be stored component is stably pressed.The bottom side middle part of top cover 4 is fixedly connected with connecting rod 6, and the bottom of connecting rod 6 is fixedly connected with pressing plate 7, and pressing plate 7 is movably installed in the upper portion in storage cylinder one 8, for the slight compaction of filled loess sample.The role of pressing plate 7 is to keep the density of soil sample layer, prevent displacement or subsidence of soil layer in experimental process, to ensure the accuracy of water transport data.Pressing plate 7 can be adjusted in height by connecting rod 6, to adapt to the experimental demand of different soil layer thickness.

[0037] Refer toFigure 1 The inside of the storage cylinder one 8 and the storage cylinder two 11 is provided with a sliding groove 13, and the sliding block 10 slides in the sliding groove 13 to facilitate the stable sliding of the sliding block 10. The sliding groove 13 is longitudinally arranged in the inside of the storage cylinder one 8 and the storage cylinder two 11, which is used to guide the smooth sliding of the sliding block 10. The sliding block 10 can move up and down in the cylinder along the sliding groove 13, and the sensor 14 installed on the sliding block 10 can realize accurate monitoring of different soil layer moisture conditions through the height adjustment of the sliding block 10. The design of the sliding groove 13 ensures the stability of the sliding block 10 when moving, avoiding the position deviation of the sensor 14 during measurement, thereby improving the accuracy of the data.

[0038] Referring to Figure 5 The top of the sliding block 10 is fixedly connected with a pull block 15, and the sliding position of the sliding block 10 in the storage cylinder one 8 can be adjusted through the pull block 15, so as to adjust the detection position of the sensor 14. The top of the sliding block 10 is fixedly connected with a pull block 15, and the position of the sliding block 10 in the storage cylinder one 8 can be adjusted through the pull block 15. The sensor 14 is fixed on the sliding block 10, and the adjustment of the position of the sliding block 10 enables the sensor 14 to realize real-time monitoring of moisture content, humidity and other data at different heights, which can meet the monitoring needs of water migration in different height soil layers.

[0039] Referring to Figure 1 The partition plate 9 is movably installed at the top of the storage cylinder two 11, which is used to separate the space between the storage cylinder one 8 and the storage cylinder two 11, and the position can be adjusted as needed. The partition plate 9 is movably installed at the top of the storage cylinder two 11, and the position of the partition plate 9 can be adjusted according to the experimental needs to form a layered soil sample structure in the experimental model. By adjusting the position of the partition plate 9, the separation of different soil layers in the model can be realized, the distribution of soil layers in the actual geological conditions can be simulated, and the water migration characteristics under the layered conditions can be studied.

[0040] Referring to Figure 2 The sensor 14 can detect the environmental parameters in the inside of the storage cylinder one 8, including but not limited to temperature, humidity or air pressure. The sensor 14 is uniformly distributed and installed on the sliding block 10, which is used to monitor the environmental parameters in the soil layer in real time, including but not limited to moisture content, humidity and temperature. The data collected by the sensor 14 can be recorded through the data acquisition system, and used in subsequent analysis to help study the water migration law in loess, especially the water migration behavior under different depths and soil layer structure conditions.

[0041] Referring to Figure 1, the rotating cover 1 can adjust the alignment degree of the air permeation groove one 2 and the air permeation groove two 5 by rotating, so as to realize accurate control of the air circulation in the storage cylinder one 8. The rotating cover 1 changes the air circulation condition in the model by adjusting the alignment degree of the air permeation groove one 2 and the air permeation groove two 5 by rotating. When the air permeation grooves are completely aligned, the air circulation is smooth, which helps to speed up the evaporation of moisture; when the air permeation grooves are partially or completely misaligned, the air flow can be reduced, so that the inside can maintain a higher humidity, so as to simulate the moisture migration process under different ventilation conditions, and thus study the influence of ventilation on the evaporation and migration of moisture in the soil layer.

[0042] Working principle: clean each part of the model, especially the parts in direct contact with the loess, to avoid impurities or contaminants affecting the experimental results, prepare loess samples that meet the experimental requirements, the humidity, density and other parameters of the loess samples need to meet the requirements of the experimental design, storage cylinder one 8 and storage cylinder two 11 are the main loess storage areas, according to the test requirements, you can choose to use only storage cylinder one 8, or connect storage cylinder two 11 to the bottom of storage cylinder one 8 through threads, increase the experimental height and soil sample storage capacity, tighten the bottom cover 12 on the bottom of storage cylinder one 8 or storage cylinder two 11 to ensure the bottom of the experimental model is airtight to prevent moisture from leaking from the bottom, fill the prepared loess samples into storage cylinder one 8 and storage cylinder two 11 layer by layer and evenly to ensure the uniformity of the density and structure of the soil sample and avoid deviations in experimental data, according to the experimental requirements, you can place the partition plate 9 at different heights to separate the soil samples at different levels to simulate the stratification in the actual loess structure, use the pressing plate 7 to slightly compact the filled soil samples to ensure the stability of the soil samples while avoiding excessive compaction affecting water migration, the slider 10 is equipped with multiple sensors 14 for detecting the moisture, humidity, temperature and other parameters of each layer of the soil sample, according to the test design, evenly distribute the sensors 14 at different heights to obtain the moisture data of each layer of loess, insert the slider 10 into storage cylinder one 8, the slider 10 can move up and down along the sliding groove 13, adjust the position of the slider 10 to achieve accurate monitoring of different soil layers, if necessary, adjust the position of the slider 10 by pulling or pushing the lifting block 15 on the top of the slider 10 to ensure that each sensor 14 is at the desired monitoring position, tighten the top cover 4 on the top of storage cylinder one 8, the air vents two 5 of the top cover 4 are evenly distributed to allow air circulation, install the rotating cover 1 on the top cover 4, adjust the air permeability through the air vents one 2 on the rotating cover 1, the rotation angle of the rotating cover 1 controls the opening degree of the air vents, thereby adjusting the air circulation in the storage cylinder, the adjustment of the air vents can simulate different ventilation conditions in the actual loess environment to meet the air circulation requirements of different experimental designs, according to the experimental requirements, add moisture to the surface or specified layers of the loess samples, observe the water migration in the unsaturated loess, the sensors 14 will monitor the moisture changes in different soil layers in real time and record the moisture content, humidity and temperature of each layer of soil sample, adjust the opening of the air vents by rotating the rotating cover 1 to adapt to the different air circulation requirements during the experiment, help to observe the differences in water migration under different ventilation conditions, record the experimental data in real time through the sensors 14, and check the position of the slider 10 regularly to ensure the accuracy of the monitoring position of each layer of sensor 14, during the experiment, observe and record the water migration process layer by layer, if the experimental design requires, you can adjust the position of the slider 10 or the layout of the sensors 14 during the experiment to obtain water migration data at different heights, all data should be recorded according to the time nodes of the experimental scheme to ensure the integrity and continuity of the test, after the test is completed, remove the bottom cover 12 and the rotating cover 1, take out the loess samples layer by layer, and record the final moisture distribution.Clean the storage cylinder 1 8, the storage cylinder 2 11, the slider 10 and other components thoroughly, ensure the test model clean, prepare for next experiment, arrange and analyze the experimental data, generate the test report, analyze the water migration rule, and obtain the experimental conclusion.

[0043] Finally, it should be noted that: the above only for the preferred embodiments of the present application has, and is not used to limit the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A non-saturated loess water migration rule test model, comprising a storage cylinder (8), characterized in that: The storage cylinder one (8) is provided with an adjusting assembly at the top, the storage cylinder one (8) is internally connected with a sliding block (10) in a sliding mode, the sliding block (10) is provided with a plurality of uniformly distributed sensors (14), and the bottom of the storage cylinder one (8) is threadedly connected with a bottom cover (12). The adjusting assembly comprises a top cover (4), the top cover (4) is threadedly connected at the top of the storage cylinder one (8), the top cover (4) is fixedly connected with a fixed rod (3) at the middle of the top end, the fixed rod (3) is rotatably connected with a rotary cover (1) at the outer periphery, a plurality of uniformly distributed air grooves two (5) are formed at the top of the top cover (4), a plurality of uniformly distributed air grooves one (2) are formed at the top of the rotary cover (1), the air grooves one (2) and the air grooves two (5) are matched with each other, and the air flow is adjusted.

2. The non-saturated loess water transfer rule test model according to claim 1, characterized in that: The bottom of the storage cylinder one (8) is threadedly connected with a storage cylinder two (11), the storage cylinder two (11) is provided with a partition plate (9) at the top, the bottom of the storage cylinder two (11) is threadedly connected with a bottom cover (12), and the increase of the storage cylinder two (11) can expand the storage space.

3. The non-saturated loess water transfer rule test model according to claim 1, characterized in that: The bottom side of the top cover (4) is fixedly connected with a connecting rod (6) at the middle, the connecting rod (6) is fixedly connected with a pressing plate (7) at the bottom, and the pressing plate (7) is arranged on the inner side of the upper portion of the storage cylinder one (8) and can stably press the stored parts.

4. The non-saturated loess water transfer rule test model according to claim 1, characterized in that: The storage cylinder one (8) and the storage cylinder two (11) are internally provided with a sliding groove (13), and the sliding block (10) slides in the sliding groove (13), so that the sliding block (10) stably slides.

5. The non-saturated loess water transfer rule test model according to claim 1, characterized in that: The top of the sliding block (10) is fixedly connected with a pulling block (15), the sliding position of the sliding block (10) in the storage cylinder one (8) can be adjusted through the pulling block (15), so that the detection position of the sensor (14) is adjusted.

6. The non-saturated loess water transfer rule test model according to claim 2, characterized in that: The partition plate (9) is movably arranged at the top of the storage cylinder two (11) and is used for separating the space between the storage cylinder one (8) and the storage cylinder two (11) and adjusting the position as required.

7. The non-saturated loess water transfer rule test model according to claim 1, characterized in that: The sensor (14) can detect the environmental parameters in the storage cylinder one (8), including but not limited to temperature, humidity or air pressure.

8. The non-saturated loess water transfer rule test model according to claim 1, characterized in that: The rotary cover (1) can adjust the alignment degree of the air grooves one (2) and the air grooves two (5) through rotation, so as to realize accurate control of the air circulation in the storage cylinder one (8).

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