Unsaturated soil sensing and coupling regulation and control device

Abstract

The invention provides an unsaturated soil sensing and coupling regulation and control device, which comprises a regulation and control box, a base, support legs and a sealing cover, the base is fixed at the bottom of the regulation and control box, the plurality of support legs are fixedly connected with the bottom of the base, and the positions of the support legs are symmetrically arranged. A three-dimensional monitoring system is constructed through an integrated multi-depth sensor network, accurate measurement and real-time monitoring of parameters such as the water content and the pore water pressure of the unsaturated soil body are achieved, and through cooperative work of equipment such as a humidity regulator, a vibration disc and a laser scanner, the soil body moisture content and the pore water pressure of the unsaturated soil body are monitored in real time. According to the invention, accurate humidification, uniform mixing and three-dimensional oscillation of the unsaturated soil body are realized, a gradient water-containing structure is formed, the flexibility and controllability of an experiment are improved by the multi-mode cooperative control method, and the physical and mechanical properties of the unsaturated soil body can be deeply researched.

Description

Technical Field

[0001] The present invention relates to the technical field of unsaturated soil, and specifically to an unsaturated soil body sensing and coupling regulation device. Background Technique

[0002] As a complex geological body with a three-phase coupling of solid-liquid-gas, the disaster prevention and control of unsaturated soil highly depends on experimental model deduction. Traditional triaxial tests, suction control tests, and centrifuge model tests have revealed the strength and deformation mechanisms of unsaturated soil, but there are significant technical bottlenecks: the static calculation mode lacks real-time feedback, insufficient consideration of multi-field coupling effects, and low deduction efficiency.

[0003] In China, disasters such as expansive soil, loess, and frozen soil occur frequently, and their early warning and treatment require accurate prediction of the coupling process, while existing models are difficult to dynamically capture the changes in complex geological environments. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides an unsaturated soil body sensing and coupling regulation device, which solves the problems raised in the above background technique.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: An unsaturated soil body sensing and coupling regulation device includes a regulation box, a base, support feet, and a closed cover. The base is fixed to the bottom of the regulation box, several support feet are fixedly connected to the bottom of the base, and the support feet are symmetrically arranged. The top of the regulation box is provided with a working cavity with an upward opening, the closed cover is installed at the top of the working cavity, and the closed cover is detachable. An element cavity with an outward opening is provided inside the regulation box, and a U-shaped support frame is installed and erected inside the element cavity. A battery pack is installed at the bottom inside the element cavity and below the support frame. The top of the support frame is fixedly installed with an intelligent chip. A control board is fixedly provided at the front end of the regulation box. A data display is provided above the front end of the control board. The data display is data-connected to the battery pack. An operation board is fixedly provided at the lower side of the front end of the control board. A human-computer interaction interface is provided inside the operation board to facilitate the operation and control by the staff. Two heat dissipation openings are provided on one side of the front end of the regulation box, and the two heat dissipation openings on both sides are symmetrically arranged up and down. The heat dissipation openings are communicated with the element cavity to achieve a heat dissipation effect. A detachable rear cover is installed at the rear of the regulation box, and the rear cover is used to close the rear end of the element cavity.

[0008] Preferably, a sample loading tray is fixedly provided at the upper end of the working cavity. The top of the humidity regulator is provided with a groove for placing unsaturated soil. A protection chamber is provided inside the closed cover, and the protection chamber is arranged above the sample loading tray to provide a covering and protecting effect.

[0009] Preferably, a vertically erected column is fixedly provided at the center position of the top end of the sample loading tray. Three connecting pieces are installed below the outer end surface of the column. The positions of the connecting pieces are arranged in an array from top to bottom. One end of each connecting piece is fixedly provided with a sensor induction piece.

[0010] Preferably, a data aggregator is fixedly provided on the upper wall of the component cavity and directly below the sample loading tray. The lower end of the column is data-connected to the data aggregator, and the data aggregator is data-connected to the intelligent chip.

[0011] Preferably, a disc-shaped adjustment disc is fixedly provided on the outer end surface of the column and above each side of the sensor induction piece. An annular groove with an upward opening is provided in the adjustment disc. A number of downward holes that penetrate up and down are provided in the annular groove. The positions of the downward holes are arranged in an annular array.

[0012] Preferably, a cylindrical connecting tube is provided at the center position in the annular groove. A mixing groove with an upward opening is provided in the connecting tube. A vibrating disc is fixedly provided at the center position below the adjustment disc.

[0013] Preferably, a laser scanner is installed on the top of the closed cover. The bottom of the laser scanner extends into the protection chamber, and it can scan the internal surface of the protection chamber to achieve the effect of real-time scanning of the surface morphology of the soil body. A data transmission line is connected to the top of the laser scanner. One end of the data transmission line extends into the component cavity and is data-connected to the data aggregator.

[0014] Preferably, a 5G signal transmitter is installed on one side of the top end of the working chamber. A signal transmission line is connected between the 5G signal transmitter and the intelligent chip.

[0015] Preferably, connecting bottom plates are fixedly provided on both sides of the top end of the control box. The positions of the connecting bottom plates on both sides are symmetrically arranged. A humidity regulator is provided on one side of the closed cover. One end of the humidity regulator is communicated with a support arm. The support arm passes through the connecting bottom plate on one side to achieve the effect of stable support. One end of the support arm extends above the protection chamber and is fixedly connected with an atomizing nozzle. The atomizing nozzle is aligned with the mixing groove in the connecting tube.

[0016] Preferably, a temperature monitoring box is provided on the other side of the closed cover. One end of the temperature monitoring box is connected with a monitoring arm. The monitoring arm passes through the connecting bottom plate on one side to achieve the effect of stable support. One end of the monitoring arm extends below the protection chamber and is fixedly provided with an infrared induction head.

[0017] Preferably, a funnel-shaped guiding funnel is fixedly arranged below in the mixing tank, hydraulic switches with symmetrical positions are fixedly arranged on both sides in the mixing tank, and a switch blade capable of moving horizontally is arranged in the hydraulic switch.

[0018] (III) Advantageous Effects

[0019] The present invention provides a non-saturated soil body perception and coupling regulation device, which has the following advantageous effects:

[0020] 1. Through the integrated multi-depth sensor network, the present invention constructs a three-dimensional monitoring system, realizing accurate measurement and real-time monitoring of parameters such as the water content and pore water pressure of the non-saturated soil body.

[0021] 2. Through the collaborative work of devices such as a humidity regulator, a vibrating disk, and a laser scanner, the present invention realizes precise humidification, uniform mixing, and three-dimensional oscillation of the non-saturated soil body, forming a gradient water-containing structure. This multi-modal collaborative control method improves the flexibility and controllability of the experiment, and helps to deeply study the physical and mechanical properties of the non-saturated soil body.

[0022] 3. Since the closed cover of the present invention is made of a transparent material, it supports the integration of optical measurement devices, ensuring clear observation of the changes in the non-saturated soil sample during the experiment, extending the service life of the device, and adapting to the acidic soil environment and the scenario of contact with chemical reagents. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the external structure of the present invention;

[0024] Figure 2 is a rear view of the external structure of the present invention;

[0025] Figure 3 is a schematic diagram of the internal structure of the regulation box of the present invention;

[0026] Figure 4 is a schematic diagram of the internal structure of the closed cover of the present invention;

[0027] Figure 5 is a rear view of the internal structure of the present invention;

[0028] Figure 6 is a side view of the external structure of the present invention;

[0029] Figure 7 is the present invention Figure 6 a cross-sectional view taken along the A-A direction in.

[0030] In the figure: 101, control box; 102, control panel; 103, operation panel; 104, data display; 105, base; 106, support feet; 107, temperature monitoring box; 108, working chamber; 109, enclosure; 110, laser scanner; 111, data transmission line; 112, support arm; 113, small water pump; 114, humidity regulator; 115, connecting base plate; 116, heat dissipation port; 117, rear cover; 118, 5G signal transmitter; 120, monitoring arm; 121, intelligent chip; 122, battery pack; 123, support frame; 124, component chamber; 125, signal transmission line; 126, atomizing nozzle; 127, mixing tank; 128, protection chamber; 129, column; 130, connecting cylinder; 131, annular groove; 132, falling hole; 133, adjusting disc; 134, sensor sensing piece; 135, connecting piece; 137, data aggregator; 138, infrared sensing head; 139, vibrating disk; 140, hydraulic switch; 142, switch piece; 143, guiding funnel; 144, sample carrier plate. Specific embodiments

[0031] An embodiment of the present invention provides a non-saturated soil sensing and coupling regulation device, as Figures 1-7 shown, including a control box 101, a base 105, support feet 106 and an enclosure 109. The base 105 is fixed to the bottom of the control box 101. A plurality of support feet 106 are fixedly connected to the bottom of the base 105, and the support feet 106 are symmetrically arranged. The top of the control box 101 is provided with an upward-opening working chamber 108, and the enclosure 109 is installed at the top of the working chamber 108. The enclosure 109 is detachable. An outward-opening component chamber 124 is provided inside the control box 101. A U-shaped support frame 123 is installed and erected inside the component chamber 124. A battery pack 122 is installed at the bottom inside the component chamber 124 and below the support frame 123. The top of the support frame 123 is fixedly installed with an intelligent chip 121. The front end of the control box 101 is fixedly provided with a control panel 102. Above the front end of the control panel 102 is provided a data display 104. The data display 104 is data-connected to the battery pack 122. The lower side of the front end of the control panel 102 is fixedly provided with an operation panel 103. The operation panel 103 is provided with a human-computer interaction interface to facilitate the operation and control by the staff. On one side of the front end of the control box 101 are provided two heat dissipation ports 116. The heat dissipation ports 116 on both sides are symmetrically arranged up and down. The heat dissipation ports 116 are communicated with the component chamber 124 to achieve a heat dissipation effect. A detachable rear cover 117 is installed at the rear of the control box 101. The rear cover 117 is used to close the rear end of the component chamber 124.

[0032] It should be further noted that the battery pack 122 plays an effect of power supply output. The data display 104 is used to display experimental data according to the output signal of the battery pack 122. The sample carrier plate 144 is provided with a resistance wire heating sheet, and precise temperature control of 0-80°C is achieved through the PID temperature control algorithm.

[0033] Furthermore, a sample tray 144 is fixedly provided at the upper end of the working chamber 108. A groove is provided at the top of the humidity regulator 114 for placing unsaturated soil. A protective chamber 128 is provided inside the closed cover 109, and the protective chamber 128 is arranged above the sample tray 144 to provide a protective effect.

[0034] It should be further noted that the closed cover 109 is made of a transparent material, such as polymethyl methacrylate (PMMA) or polycarbonate (PC). This type of material can ensure clear observation of the changes in unsaturated soil samples during the experiment, and supports the integration of optical measurement equipment such as laser displacement sensors, and is suitable for acidic soil environments and chemical reagent contact scenarios, extending the service life of the equipment.

[0035] It is worth further noting that the inner wall surface of the closed cover 109 is coated with a hydrophobic nano-coating to reduce the influence of water vapor condensation on the observation accuracy.

[0036] Furthermore, a vertically erected column 129 is fixedly provided at the center position of the top end of the sample tray 144. Three connecting pieces 135 are installed below the outer end face of the column 129, and the positions of the connecting pieces 135 are arranged in an array from top to bottom. One end of the connecting piece 135 is fixedly provided with a sensor sensing piece 134.

[0037] It should be further noted that the distances between the three sensor sensing pieces 134 and the surface of the sample tray 144 are 5 cm, 15 cm, and 25 cm respectively. The three sensor sensing pieces 134 are an EC-5 soil moisture sensor, a 5TM soil moisture sensor, and a pore water pressure sensor respectively, forming a multi-depth monitoring network.

[0038] It is worth further noting that the inside of the column 129 is hollow for placing various data wires and power supply wires.

[0039] Furthermore, a data aggregator 137 is fixedly provided on the upper wall of the component chamber 124 and directly below the sample tray 144. The lower end of the column 129 is data-connected to the data aggregator 137, and the data aggregator 137 is data-connected to the intelligent chip 121.

[0040] It is worth further noting that each power supply wire inside the column 129 is electrically connected to the battery pack 122.

[0041] Furthermore, a disc-shaped adjustment disc 133 is fixedly provided on the outer end face of the column 129 and above the sensor sensing pieces 134 on each side. An annular groove 131 with an upward opening is provided inside the adjustment disc 133. A number of through holes 132 that penetrate up and down are provided in the annular groove 131, and the positions of the through holes 132 are arranged in an annular array.

[0042] Further, a cylindrical connecting cylinder 130 is provided at the central position in the annular groove 131. A mixing tank 127 with an upward opening is provided inside the connecting cylinder 130. A vibrating disk 139 is fixedly provided at the central position below the adjusting disk 133.

[0043] It should be further noted that the vibrating disk 139 generates vibration waves of 50 - 500 Hz through intelligent regulation and transmits the vibration waves into the adjusting disk 133. The data lines and power lines inside the vibrating disk 139 pass through the hollow pipes inside the column 129. The data lines are connected to the data aggregator 137, and the power lines are connected to the battery pack 122.

[0044] Further, a laser scanner 110 is installed at the top of the closed cover 109. The bottom of the laser scanner 110 extends into the protective chamber 128, and it scans the inside of the protective chamber 128 to achieve the effect of real-time scanning of the surface morphology of the soil body. A data transmission line 111 is connected to the top of the laser scanner 110. One end of the data transmission line 111 extends into the component chamber 124 and is data-connected to the data aggregator 137.

[0045] Further, a 5G signal transmitter 118 is installed on one side at the top of the working chamber 108. A signal transmission line 125 is connected between the 5G signal transmitter 118 and the intelligent chip 121.

[0046] It should be further noted that the 5G signal transmitter 118 transmits the monitoring data processed by the intelligent chip 121 to the cloud in real time through the 5G network according to the aggregated data of the intelligent chip 121 and supports multi-terminal synchronous access.

[0047] Further, connecting bottom plates 115 are fixedly provided on both sides at the top of the regulation box 101. The positions of the connecting bottom plates 115 on both sides are symmetrically arranged. A humidity regulator 114 is provided on one side of the closed cover 109. One end of the humidity regulator 114 is communicated with a support arm 112. The support arm 112 passes through the connecting bottom plate 115 on one side to achieve a stable support effect. One end of the support arm 112 extends into the upper part of the protective chamber 128 and is fixedly connected with an atomizing nozzle 126. The atomizing nozzle 126 is aligned with the mixing tank 127 inside the connecting cylinder 130.

[0048] It should be further noted that the atomizing nozzle 126 humidifies the soil in the mixing tank 127 and facilitates the subsequent coupling work.

[0049] Further, a temperature monitoring box 107 is provided on the other side of the closed cover 109. One end of the temperature monitoring box 107 is connected with a monitoring arm 120. The monitoring arm 120 passes through the connecting bottom plate 115 on one side to achieve a stable support effect. One end of the monitoring arm 120 extends into the lower part of the protective chamber 128 and is fixedly provided with an infrared sensor 138.

[0050] It should be further noted that the infrared sensor head 138 is used to monitor the temperature of the unsaturated soil placed on the sample tray 144.

[0051] It is worth further noting that the intelligent chip 121 is an intelligent data control chip, which receives multi-depth sensor data in real time, automatically calibrates the influence of temperature and humidity, ensures the measurement accuracy of parameters such as water content and pore water pressure, and analyzes the state change of the soil body by an internal AI algorithm, identifies precursors of disasters such as collapsibility and swelling, and pushes warning information through the data display 104.

[0052] Furthermore, a funnel-shaped guiding funnel 143 is fixedly arranged below the inner part of the mixing tank 127, and hydraulic switches 140 with symmetrical positions are fixedly arranged on both sides inside the mixing tank 127. A switch piece 142 capable of lateral movement is arranged inside the hydraulic switch 140.

[0053] It should be further noted that the hydraulic switch 140 adopts a micro hydraulic switch and controls the translation of the switch pieces 142 on both sides. When the switch pieces 142 on both sides translate and approach each other, the outlet below the guiding funnel 143 can be closed, and vice versa.

[0054] When using this solution, first, system initialization and sample preparation are carried out. The operator starts the device self-check program through the human-machine interaction interface of the operation panel 103. After confirming that the battery pack 122, intelligent chip 121, and data aggregator 137 are operating normally, the rear cover 117 is removed to check the internal cable layout of the column 129. In the sample preparation stage, the layered filling process is adopted. The sterilized unsaturated soil samples are filled into the concave sample loading groove at the top of the sample tray 144 in three times, with a thickness of 5 cm for each layer, and vertical vibration is applied by the vibrating disk 139 for compaction treatment to ensure that the uniformity of the soil body density reaches the unit weight control standard of ±2%. At the same time, a certain amount of mixed soil is loaded into the mixing tank 127.

[0055] During the experiment, precise regulation is achieved through multi-modal collaborative control. The operator injects a certain amount of deionized water into the mixing tank 127 through the humidification channel of the support arm 112 and mixes it with the mixed soil in the mixing tank 127 to form a moist soil mass. At the same time, the PID temperature control system built into the sample carrier 144 performs thermal loading according to a preset gradient program (20°C → 50°C → 80°C). The infrared sensor head 138 on the connecting base plate 115 calibrates the temperature field distribution in real time, and cooperates with the multi-depth sensor network integrated on the column 129 (the surface 5 cm EC-5 dielectric sensor, the middle layer 15 cm 5TM three-needle probe, and the deep layer 25 cm pore water pressure gauge) to construct a three-dimensional monitoring system. When the intelligent chip 121 detects that the water content change rate exceeds the preset threshold and the pore pressure difference also exceeds the threshold, the hydraulic switches 140 on both sides of the mixing tank 127 are activated, and the switch plates 142 on both sides are controlled to move away from each other and open the opening under the guiding funnel 143. At this time, the moist soil mass that has been humidified in the mixing tank 127 slides down into the adjustment plate 133. Then, the vibrating plate 139 is activated and transmits vibration to the adjustment plate 133. At this time, the humidified moist soil mass falls downward through the falling hole 132 and is evenly mixed with the unsaturated soil sample placed in the sample carrier 144.

[0056] Subsequently, the vibrating plate 139 drives the adjustment plate 133 to generate three-dimensional oscillations, enabling the moist soil mass to uniformly penetrate into the unsaturated soil body in the sample carrier groove of the sample carrier 144 through the multi-directional penetration channels of the falling hole 132, forming a gradient water content structure.

[0057] After the mixing is completed, the laser scanner 110 starts a full-section scan to capture the development of cracks on the soil surface. The monitoring data is transmitted to the data aggregator 137 through the data transmission line 111, and the intelligent chip 121 performs three-dimensional point cloud reconstruction to identify potential cracks and record them. Subsequently, all the control parameters and soil body response data are uploaded to the cloud through the 5G signal transmitter 118, and a real-time coupling curve of water content - temperature - pore pressure is generated on the operation panel 103.

[0058] After the experiment is terminated, the operator can export key parameters such as compressive strain energy density and hydraulic conductivity through the interface of the operation panel 103 and generate a soil body stability assessment report using the built-in algorithm.

[0059] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-saturated soil body sensing and coupling regulation device, comprising a regulation box (101), a base (105), a support leg (106) and an enclosure (109), characterized in that: The base (105) is fixed to the bottom of the control box (101). A plurality of feet (106) are fixedly connected to the bottom of the base (105). The feet (106) are symmetrically arranged. The top of the control box (101) is provided with a working chamber (108) with an upward opening. The enclosure (109) is installed at the top of the working chamber (108). An element chamber (124) with an outward opening is provided inside the control box (101). A U-shaped support frame (123) is installed and erected inside the element chamber (124). A battery pack (122) is installed at the bottom inside the element chamber (124) and below the support frame (123). A smart chip (121) is fixedly installed at the top of the support frame (123). A control panel (102) is fixedly provided at the front end of the control box (101). Above the front end of the control panel (102) is provided a data display (104). The data display (104) is data-connected to the battery pack (122). An operation panel (103) is fixedly provided at the lower side of the front end of the control panel (102). On one side of the front end of the control box (101) are provided two heat dissipation openings (116). The two heat dissipation openings (116) on both sides are symmetrically arranged up and down. The heat dissipation openings (116) communicate with the element chamber (124). A rear cover (117) is installed at the rear of the control box (101).

2. The unsaturated soil perception and coupling regulation device according to claim 1, characterized in that: At the upper end of the working chamber (108) is fixedly provided a sample loading tray (144). The top of the sample loading tray (144) is provided with a groove for placing unsaturated soil. Inside the enclosure (109) is provided a protection chamber (128). The protection chamber (128) is arranged above the sample loading tray (144).

3. The unsaturated soil sensing and coupling regulation device according to claim 2, wherein: At the center position of the top of the sample loading tray (144) is fixedly provided a column (129). Below the outer end face of the column (129) are installed three connecting pieces (135). The connecting pieces (135) are arranged in an array from top to bottom. One end of each connecting piece (135) is fixedly provided with a sensor sensing piece (134).

4. The unsaturated soil perception and coupling regulation device according to claim 3, characterized in that: On the upper wall of the element chamber (124) and directly below the sample loading tray (144) is fixedly provided a data aggregator (137). The lower end of the column (129) is data-connected to the data aggregator (137). The data aggregator (137) is data-connected to the smart chip (121).

5. The unsaturated soil sensing and coupling regulation device according to claim 4, characterized in that: Above each of the sensor sensing pieces (134) on the outer end face of the column (129) is fixedly provided an adjustment disc (133). Inside the adjustment disc (133) is provided an annular groove (131). Inside the annular groove (131) are provided a number of through holes (132) that penetrate up and down. The through holes (132) are arranged in an annular array. At the center position inside the annular groove (131) is provided a connecting cylinder (130). Inside the connecting cylinder (130) is provided a mixing groove (127) with an upward opening. At the center position below the adjustment disc (133) is fixedly provided a vibrating disc (139).

6. The unsaturated soil perception and coupling regulation device according to claim 5, characterized in that: A laser scanner (110) is installed on the top of the enclosed cover (109), and the bottom of the laser scanner (110) extends into the protection room (128) and is connected to the inside of the protection room (128). A data transmission line (111) is provided at the top of the laser scanner (110), and one end of the data transmission line (111) extends into the element cavity (124) and is data-connected to the data aggregator (137).

7. The unsaturated soil perception and coupling regulation device according to claim 1, characterized in that: A 5G signal transmitter (118) is installed on one side of the top end of the working chamber (108), and a signal transmission line (125) is connected between the 5G signal transmitter (118) and the smart chip (121).

8. The unsaturated soil perception and coupling regulation device according to claim 5, characterized in that: Connecting bottom plates (115) are fixedly provided on both sides of the top of the control box (101), and the connecting bottom plates (115) on both sides are symmetrically arranged. A humidity regulator (114) is provided on one side of the closed cover (109), and a support arm (112) is connected to one end of the humidity regulator (114). The support arm (112) passes through the connecting bottom plate (115) on one side. One end of the support arm (112) extends to the upper part of the protection chamber (128) and is fixedly connected to an atomizing nozzle (126). The atomizing nozzle (126) is aligned with the mixing tank (127) in the connecting cylinder (130).

9. The unsaturated soil perception and coupling regulation device according to claim 8, characterized in that: A temperature monitoring box (107) is provided on the other side of the closed cover (109), one end of the temperature monitoring box (107) is connected to a monitoring arm (120), the monitoring arm (120) passes through the connecting bottom plate (115) on one side, one end of the monitoring arm (120) extends to the lower part of the protection room (128) and is fixedly provided with an infrared sensor head (138).

10. The unsaturated soil sensing and coupling regulation device according to claim 9, characterized in that: A guide funnel (143) is fixedly provided at the lower part of the mixing tank (127), and symmetrically positioned hydraulic switches (140) are fixedly provided at both sides of the mixing tank (127), wherein a switch sheet (142) is provided in the hydraulic switch (140).

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