Device and method for monitoring moisture content distribution of solidified soil under drying-wetting cycles

Abstract

The application discloses a kind of for curing soil moisture content distribution dynamic monitoring device and method under dry-wet cycle, monitoring device includes solidified soil, porous cylinder, electronic scale, metal wire, plug-in terminal, resistivity meter, data line and computer, wherein, porous cylinder includes cylinder seat, cylinder body, special bolt, electrode plate and drain hole, when testing, solidified soil is fixed in porous cylinder, porous cylinder forms electrode array, simultaneously, electronic scale gathers the mass change data of sample in dry-wet cycle process, resistivity information collected by resistivity meter is transmitted to computer for processing.This is used for curing soil moisture content distribution dynamic monitoring device under dry-wet cycle integration weighing and resistivity detection, in porous cylinder layout annular electrode array, can non-destructive continuous acquisition curing soil global resistivity and overall mass data, data import model can intuitively present dry-wet cycle moisture migration and crack evolution, modular structure adapts multiple types of rock-soil sample, and it is strong in universality.

Description

Technical Field

[0001] This invention belongs to the field of solidified soil moisture content monitoring technology, and more specifically, relates to a device and method for dynamic monitoring of solidified soil moisture content distribution under wet-dry cycles. Background Technology

[0002] Solidified soil, with its advantages of low cost and controllable strength, is widely used in shallow geotechnical engineering such as roadbeds, embankment filling, slope reinforcement, and site backfilling. In the hot and humid regions of southern my country, engineering projects have long been subjected to the effects of wet-dry cycles caused by rainfall infiltration, surface evaporation, and periodic fluctuations in temperature and humidity. The continuous migration and redistribution of internal moisture in solidified soil will gradually lead to durability problems such as soil pore reconstruction, mechanical strength decay, expansion and contraction deformation, and surface crack propagation. Accurately capturing the spatial distribution and temporal evolution of internal moisture content in solidified soil throughout the wet-dry cycle is an indispensable experimental basis for evaluating the long-term service performance of solidified soil, analyzing damage mechanisms, and predicting the life of engineering projects. The industry urgently needs high-precision, full-process visual monitoring and testing devices to support related research.

[0003] Currently, in indoor tests of solidified soil wet-dry cycles, the industry-standard methods for detecting moisture content mainly include three types: drying method, single-point resistance sensing method, and point humidity sensor monitoring. The drying method relies on high-temperature drying of samples to calculate the overall moisture content; the resistance method and point humidity sensor can only deploy detection elements at local points inside the sample to obtain single-point humidity data; the above devices are mostly independent and separate instruments, which can only collect the total moisture content of the sample or the humidity information of local points at a certain moment. An integrated monitoring system that can simultaneously collect the overall mass and resistivity of the sample has not yet been formed, nor is a visualization imaging module provided. It is difficult to fully restore the entire process of the spatial evolution of moisture inside the solidified soil, and the test data has a single dimension. Summary of the Invention

[0004] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a device and method for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles. The device utilizes a porous cylinder as its main structure and connected metal wires to form an electrode array with 128 measuring point channels. An electronic scale located at the bottom of the porous cylinder collects real-time data on the mass change of the solidified soil during wet-dry cycles. A resistivity meter placed outside the porous cylinder collects resistivity data for each measuring point channel. The resistivity meter transmits the data to a computer, completing the acquisition, storage, and subsequent reconstruction of the moisture content distribution. Based on the moisture content distribution results from eight different height sections, the computer further generates a two-dimensional moisture content contour map and overlays multiple two-dimensional cross-sectional data to construct a three-dimensional moisture content distribution model. This allows for the dynamic display of the moisture migration patterns, wetting range changes, and potential crack development processes of the solidified soil under wet-dry cycles.

[0005] To achieve the above objectives, according to a first aspect of the present invention, a device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles is provided, comprising: The monitoring device consists of a porous cylinder as its main structure, a metal wire inserted into a threaded hole on the side of the porous cylinder at one end, and a terminal block connected to the other end of the metal wire. The terminal block is connected to 16 metal wires in a clockwise order. The porous cylinder includes a cylinder body as the main structure of the porous cylinder, a cylinder seat screwed into the bottom of the cylinder body, a special bolt inserted into the threaded through hole of the cylinder body, and an electrode plate disposed inside the cylinder body and closely attached to the inner side of the cylinder body. The porous cylinder also includes a drainage hole disposed at the bottom of the outer wall of the cylindrical receiving part.

[0006] Furthermore, the cylindrical body is characterized by being cylindrical in shape and made of acrylic sheet.

[0007] Furthermore, the side of the cylinder is uniformly provided with 16×8 threaded through holes.

[0008] Furthermore, the cylindrical base includes a cylindrical receiving portion as the upper part of the cylindrical base and a solid chassis structure as the lower part of the cylindrical base.

[0009] Furthermore, the cylindrical receiving part is used to install the solidified soil, and the solid chassis structure is used to support the porous cylinder.

[0010] Furthermore, the special bolt is made of copper alloy, and the special bolt stud has a wire guide groove for winding the metal wire.

[0011] Furthermore, the porous cylinder also includes a drainage hole located at the bottom of the outer wall of the cylindrical receiving portion.

[0012] Furthermore, a plug is inserted into the drain hole, and the plug is removed after the wet circulation is completed to quickly drain the water accumulated inside the cylinder.

[0013] Furthermore, it also includes a data cable with one end connected to the rear side of the resistor, which connects the resistor to the computer.

[0014] According to a second aspect of the present invention, a method for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles is provided, which is implemented using a device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles, comprising: S100: Weigh and record the total mass excluding the solidified soil monitoring device, check the integrity of each component, and ensure that the instrument can operate normally; S200: Fix the solidified soil onto the cylindrical base, tighten the cylinder body, screw the special bolts into the surface of the solidified soil, and then connect the metal wires to the plug terminals in sequence to form a stable electrode channel connection. S300: Slowly inject water from the top of the cylinder until the liquid level is 1cm above the top of the solidified soil. Let it stand and soak for 24 hours to simulate the wet cycle process. After soaking, quickly drain the water inside the cylinder through the drain hole and record the total weight of the monitoring device at this time. S400: Start the electronic scale and resistance meter to collect data synchronously at 2-hour intervals. The electronic scale records the reduction in the mass of the solidified soil, and the resistance meter collects the resistivity distribution matrix to monitor the natural air drying process throughout. S500: After completing the set number of wet and dry cycles, take out the solidified soil, dry it at 105℃ to constant weight, record the total weight of the solidified soil at this time, calculate the overall moisture content at each time point based on the mass data, and establish the relationship curve between moisture content and resistivity by fitting the corresponding resistivity data. S600: Based on the established correspondence, the resistivity distribution matrix is ​​converted into the water content distribution matrix, which can generate a two-dimensional water content contour map, or superimpose cross-sectional data to construct a three-dimensional distribution model.

[0015] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects: 1. The monitoring device of the present invention constructs an electrode array and forms 128 measuring point channels through a porous cylinder as the main structure of the monitoring device and metal wires connected thereto. The electronic scale located at the bottom of the porous cylinder collects the mass change data of the solidified soil in the dry-wet cycle process in real time. The resistivity data of each measuring point channel is collected by a resistance meter placed outside the porous cylinder. The resistance meter transmits the data to the computer to complete the acquisition, storage and subsequent reconstruction of the resistivity data and moisture content distribution. The computer can further generate a two-dimensional moisture content contour map based on the moisture content distribution results of 8 different height sections, and superimpose multiple two-dimensional section data to construct a three-dimensional moisture content distribution model, thereby dynamically displaying the water migration law, wetting range change and potential crack development process of the solidified soil under the action of dry-wet cycle.

[0016] 2. The porous cylinder of the present invention consists of a cylinder body, special bolts, electrode plates and metal wires forming a 16×8 electrode array, obtaining 128 measuring point channels. The position of the solidified soil can be fixed by screwing into the cylinder seat at the bottom of the cylinder body. The metal wires can be connected to the solidified soil by inserting the special bolts into the threaded through holes of the cylinder body to form a complete circuit. The water accumulated in the cylinder body can be drained through the drainage hole at the bottom of the outer wall of the cylindrical receiving part of the cylinder body after the wet cycle is completed. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of the device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles, according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the porous cylinder in the dynamic monitoring device for moisture content distribution of solidified soil under wet-dry cycles, according to an embodiment of the present invention. Figure 3 This is an exploded view of the porous cylinder in the dynamic monitoring device for moisture content distribution of solidified soil under wet-dry cycles, according to an embodiment of the present invention. Figure 4 This is a wiring diagram of the plug-in terminals for a dynamic monitoring device for moisture content distribution of solidified soil under wet-dry cycles, according to an embodiment of the present invention. Figure 5 This is a flowchart illustrating the workflow of the device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles, as described in an embodiment of the present invention.

[0018] In all the accompanying drawings, the same reference numerals indicate the same technical features, specifically: 1-stabilized soil, 2-porous cylinder, 21-cylinder base, 22-cylinder body, 23-special bolt, 24-electrode plate, 25-drainage hole, 3-electronic scale, 4-metal wire, 5-plug terminal, 6-resistance meter, 7-data cable, 8-computer. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0020] In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of the embodiments of the present invention, "multiple" means at least two.

[0023] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0024] This invention provides a device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles, such as... Figure 1As shown, the device includes solidified soil 1, a porous cylinder 2, an electronic scale 3, metal wires 4, a terminal block 5, a resistance meter 6, a data cable 7, and a computer 8. The solidified soil 1 fills the interior of the porous cylinder 2, which serves as the main structure of the monitoring device. The porous cylinder 2 is cylindrical, with threaded through holes evenly distributed on its side. One end of the metal wires 4 is inserted into these threaded through holes, forming an electrode array with the porous cylinder 2. The other end of the metal wires 4 is connected to the terminal block 5. Multiple metal wires 4 are connected to the terminal block 5 in a clockwise sequence, with every 16 metal wires 4 connected to one terminal block 5. This creates 128 measuring point channels on the side of the porous cylinder 2. The resistance meter 6 is embedded in the terminal block 5. On one side of the front, the resistivity meter 6 is independently placed outside the porous cylinder 2. The resistivity meter 6 can collect the resistivity of each measuring point channel. The porous cylinder 2 is placed at the top center of the electronic scale 3. The electronic scale 3 can collect the mass change data of the solidified soil 1 in real time during the dry and wet cycle. One end of the data cable 7 is connected to the rear side of the resistivity meter 6, and the other end of the data cable 7 is connected to the computer 8. The data cable 7 connects the resistivity meter 6 and the computer 8 and completes the data transmission, transmitting the resistivity data collected by the resistivity meter 6 to the computer 8. The computer 8 is placed at the top center of the resistivity meter 6. The computer 8 uses the data to establish the correspondence between resistivity and moisture content, so as to realize the dynamic reconstruction of the moisture content distribution inside the solidified soil 1. The monitoring device of this invention constructs an electrode array and forms 128 measuring point channels through a porous cylinder as the main structure of the monitoring device and metal wires connected to it. An electronic scale located at the bottom of the porous cylinder collects the mass change data of the solidified soil in the process of dry-wet cycle in real time. A resistivity meter placed outside the porous cylinder collects the resistivity data of each measuring point channel. The resistivity meter transmits the data to the computer to complete the acquisition, storage and subsequent reconstruction of the resistivity data and moisture content distribution. The computer can further generate a two-dimensional moisture content contour map based on the moisture content distribution results of 8 different height sections, and superimpose multiple two-dimensional section data to construct a three-dimensional moisture content distribution model, thereby dynamically displaying the water migration law, wetting range change and potential crack development process of the solidified soil under the action of dry-wet cycle.

[0025] Specifically, such as Figure 2 , Figure 3 , Figure 4As shown, the porous cylinder 2 includes a cylinder base 21, a cylinder body 22, special bolts 23, an electrode plate 24, and a drainage hole 25. The cylinder body 22 serves as the main structure of the porous cylinder 2. The cylinder body 22 is cylindrical and made of acrylic sheet. The side wall of the cylinder body 22 is evenly provided with 8 turns of threaded through holes along the height direction, with 16 holes in each turn to obtain resistivity information at different heights and orientations. The turns are equidistantly distributed along the circumference, forming a 16×8 threaded through hole surface, which can obtain 128 measuring points. The cylindrical base 21 is screwed into the bottom of the cylinder body 22. The cylindrical base 21 is integrally machined from acrylic. Its upper part is a cylindrical receiving part for installing the solidified soil 1, and its lower part is a solid base structure for supporting the entire porous cylinder 2. The outer wall of the cylindrical receiving part of the cylindrical base 21 is threaded, which can be threaded to the bottom of the cylinder body 22. The inner diameter of the upper end face of the cylindrical receiving part matches the diameter of the solidified soil 1, which can provide stable support and limit fixation for the solidified soil 1, thereby ensuring that the solidified soil 1 is protected from water immersion and wind. During the drying process, maintain the established position to reduce the impact of movement or eccentricity on the measurement results. A special bolt 23, made of copper alloy, is inserted into the threaded through hole of the cylinder 22. The bolt 23 has a wire groove on its stud, and the metal wire 4 is inserted into the groove and wound around the side of the stud. The special bolt 23 connects the metal wire 4 to the solidified soil 1, ensuring that the depth of the bolt 23 inserted into the solidified soil 1 is no greater than 1 / 10 of the distance between adjacent threaded holes, to ensure stable conductive contact and minimize impact on the solidified soil. 1. Disturbance of the original structure and moisture migration path: Electrode plate 24 is set inside the cylinder body 22 and closely attached to the inner side of the cylinder body 22. The side of electrode plate 24 has 16×8 threaded through holes, which correspond one-to-one with the cylinder body 22. The cylinder body 22, special bolt 23, electrode plate 24 and metal wire 4 together constitute an electrode array. Drainage hole 25 is opened at the bottom of the outer wall of the cylindrical receiving part of the cylinder body 22. A plug is plugged at the drainage hole 25. The plug can be removed after the wet cycle to quickly drain the water accumulated in the cylinder body 22. The porous cylinder of the present invention is composed of a cylinder body, special bolt, electrode plate and metal wire together to form a 16×8 electrode array, obtaining 128 measuring point channels. The position of the solidified soil can be fixed by screwing into the cylindrical seat at the bottom of the cylinder body. The metal wire can be connected to the solidified soil by inserting the special bolt into the threaded through hole of the cylinder body to form a complete circuit. The water accumulated in the cylinder body can be drained after the wet cycle through the drainage hole opened at the bottom of the outer wall of the cylindrical receiving part of the cylinder body.

[0026] Preferably, during the natural air-drying stage, the electronic scale 3 collects data on the mass reduction of the solidified soil 1 at 2-hour intervals, and records the mass reduction at a certain moment as _____. The resistivity meter 6 synchronously acquired the resistivity distribution matrix of the solidified soil 1 at a frequency of 2 hours, and recorded the average resistivity at that moment as . Each 24-hour soaking followed by 48-hour air drying can be counted as one wet-dry cycle. After multiple cycles, the solidified soil 1 is removed, dried at 105℃, and its dry mass is measured. The total moisture content of the sample at each time point was obtained using the total moisture content formula, which is as follows:

[0027] in, The total moisture content of the solidified soil 1; The total weight of the monitoring device excluding solidified soil 1 at the start of the experiment; This is the total weight of the monitoring device after the water inside the cylinder has been drained following immersion.

[0028] Total moisture content and The data is fitted to establish the relationship curve between the moisture content and resistivity of the solidified soil. Based on this relationship curve, the resistivity distribution matrix of solidified soil 1 at a certain moment can be converted into a moisture content distribution matrix. For each solidified soil 1, the moisture content distribution results of 8 different height sections can be obtained, and a two-dimensional moisture content contour map can be generated. By superimposing multiple two-dimensional section data, a three-dimensional moisture content distribution model can also be constructed to dynamically display the water migration law, wetting range change and potential crack development process of solidified soil under the action of dry and wet cycle.

[0029] like Figure 5 As shown, in another embodiment of the present invention, a method for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles is provided, comprising the following steps: Weigh and record the total mass of the monitoring device excluding the solidified soil, check the integrity of each component, and ensure that the instrument is in normal working order.

[0030] Fix the solidified soil 1 onto the cylindrical base 21, tighten the cylinder body 22, screw the special bolt 23 into the surface of the solidified soil 1, and then connect the metal wire 4 to the plug terminal 5 in sequence to form a stable electrode channel connection.

[0031] Water is slowly poured into the upper part of the cylinder 22 until the liquid level is 1 cm higher than the top of the solidified soil 1. The cylinder is left to soak for 24 hours to simulate a wet cycle process. After soaking, the water in the cylinder is quickly drained through the drain hole 25. The total weight of the monitoring device is recorded at this time.

[0032] Start the electronic scale 3 and the resistance meter 6 to collect data synchronously at 2-hour intervals. The electronic scale 3 records the amount of mass reduction of the solidified soil 1, and the resistance meter 6 collects the resistivity distribution matrix to monitor the natural air drying process throughout.

[0033] After completing the set number of wet and dry cycles, the solidified soil 1 was taken out and dried at 105℃ to constant weight. The total weight of solidified soil 1 at this time was recorded. The overall moisture content at each time point was calculated based on the mass data, and the relationship curve between moisture content and resistivity was established by fitting the corresponding resistivity data.

[0034] Based on the established correspondence, the resistivity distribution matrix is ​​converted into the water content distribution matrix, which can generate a two-dimensional water content contour map, or a three-dimensional distribution model can be constructed by overlaying cross-sectional data.

[0035] In summary, this device for dynamic monitoring of moisture content distribution in solidified soil under wet-dry cycles integrates weighing and resistivity detection. It features a ring-shaped electrode array arranged in a porous cylinder, enabling non-destructive and continuous acquisition of resistivity and overall mass data of the solidified soil across its entire range. After the data is imported into the model, it can intuitively present the migration of moisture and the evolution of cracks during wet-dry cycles. Its modular structure is adaptable to various types of soil and rock samples, making it highly versatile.

[0036] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles, characterized in that, include: The monitoring device consists of a porous cylinder (2) as the main structure, a metal wire (4) with one end inserted into a threaded hole on the side of the porous cylinder (2), and a plug terminal (5) connected to the other end of the metal wire (4). The plug terminal (5) is connected to 16 metal wires (4) in a clockwise order. The porous cylinder (2) includes a cylinder body (22) as the main structure of the porous cylinder (2), a cylinder seat (21) screwed into the bottom of the cylinder body (22), a special bolt (23) inserted into the threaded through hole of the cylinder body (22), and an electrode plate (24) provided inside the cylinder body (22) and close to the inner side of the cylinder body (22). The porous cylinder (2) also includes a drainage hole (25) provided at the bottom of the outer wall of the cylindrical receiving part.

2. The device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles according to claim 1, characterized in that, The cylinder body (22) has a cylindrical structure and is made of acrylic sheet.

3. The device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles according to claim 2, characterized in that, The cylinder body (22) has 16×8 threaded through holes evenly distributed on its side.

4. The device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles according to claim 3, characterized in that, The cylindrical base (21) includes a cylindrical receiving part as the upper part of the cylindrical base (21) and a solid chassis structure as the lower part of the cylindrical base (21).

5. The device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles according to claim 4, characterized in that, The cylindrical receiving part is used to install the solidified soil (1), and the solid chassis structure is used to support the porous cylinder (2).

6. The device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles according to claim 5, characterized in that, The special bolt (23) is made of copper alloy, and the special bolt (23) has a groove on the stud for winding the metal wire (4).

7. A device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles according to any one of claims 1-6, characterized in that, The porous cylinder (2) also includes a drainage hole (25) located at the bottom of the outer wall of the cylindrical receiving part.

8. The device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles according to claim 7, characterized in that, A plug is inserted into the drain hole (25). The plug is removed from the drain hole (25) after the wet circulation is completed to quickly drain the water accumulated in the cylinder (22).

9. A device for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles according to any one of claims 1-6, characterized in that, It also includes a data line (7) with one end connected to the rear end of the side of the resistor (6), the data line (7) connecting the resistor (6) to the computer (8).

10. A method for dynamically monitoring the moisture content distribution of solidified soil under wet-dry cycles, characterized in that, The device for dynamic monitoring of moisture content distribution in solidified soil under wet-dry cycles, as described in any one of claims 1-9, is used, comprising: S100: Weigh and record the total mass of the monitoring device excluding solidified soil (1), check the integrity of each component, and ensure that the instrument can operate normally; S200: Fix the solidified soil (1) on the cylindrical base (21), tighten the cylinder body (22), screw the special bolt (23) into the surface of the solidified soil (1), and then connect the metal wire (4) to the plug terminal (5) in sequence to form a stable electrode channel connection; S300: Slowly inject water from the top of the cylinder (22) until the liquid level is 1cm higher than the top of the solidified soil (1), let it stand and soak for 24 hours to simulate the wet cycle process, and after the soaking is completed, quickly drain the water in the cylinder through the drain hole (25) and record the total weight of the monitoring device at this time. S400: Start the electronic scale (3) and the resistance meter (6) to collect data synchronously at 2-hour intervals. The electronic scale (3) records the amount of mass reduction of the solidified soil (1), and the resistance meter (6) collects the resistivity distribution matrix to monitor the natural air drying process throughout. S500: After completing the set number of wet and dry cycles, take out the solidified soil (1), dry it at 105℃ to constant weight, record the total weight of the solidified soil (1) at this time, calculate the overall moisture content at each time by combining the mass data, and establish the relationship curve between moisture content and resistivity by fitting the corresponding resistivity data. S600: Based on the established correspondence, the resistivity distribution matrix is ​​converted into the water content distribution matrix, which can generate a two-dimensional water content contour map, or superimpose cross-sectional data to construct a three-dimensional distribution model.

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