Slope treatment sensing anchor rod based on microorganism mineralization technology

Abstract

The utility model discloses a slope treatment sensing anchor rod based on microorganism mineralization technology, which relates to the slope treatment technology and comprises an anchor rod body, a sensing component is arranged on the anchor rod body and comprises a communication module and a plurality of retaining pieces, springs are arranged on one sides, close to the anchor rod body, of the retaining pieces, and the communication module is connected with the communication module. Any end of the spring is fixedly connected with the baffle, the end, away from the baffle, of the spring is fixedly connected with the side wall of the anchor rod body, first strain gauges are arranged on the outer side walls of the blocking pieces, and second strain gauges are arranged on the side walls of the spring; and the first strain gauge and the second strain gauge are electrically connected with the communication module, so that the working step of collecting the soil strength by an operator in the slope treatment process is simplified.

Description

Technical Field

[0001] This utility model relates to the field of slope treatment technology, and in particular to a slope treatment sensing anchor based on microbial mineralization technology. Background Technology

[0002] Microbial Induced Carbonate Precipitation (MICP) is an emerging biogeoengineering technology that utilizes the metabolic activities of specific microorganisms (such as urease-producing bacteria) to induce the precipitation of minerals like calcium carbonate, thereby improving the engineering properties of soil. This technology involves microorganisms enzymatically hydrolyzing urea to produce carbonate ions, which combine with calcium ions in the surrounding environment to form calcium carbonate precipitates. These precipitates fill soil pores and cement soil particles, significantly improving the soil's strength, stiffness, and erosion resistance.

[0003] In slope stabilization, anchor bolts are commonly used for support. Anchor bolt technology is a reinforcement method that anchors potential sliding bodies to stable soil and rock layers by installing tension members (usually steel strands or reinforcing bars) inside the slope and applying prestress. The anchor bolt system mainly consists of three parts: the anchoring section, the free section, and the anchor head, forming an integrated load-bearing system with the surrounding soil and rock mass through grouting.

[0004] Meanwhile, in slope engineering, microbial mineralization technology mainly enhances slope stability in two ways: (1) by cementing loose soil particles with calcium carbonate precipitation, it improves the erosion resistance of the slope surface; (2) by forming a mineral cementation network inside the slope, it enhances the shear strength of the soil. Compared with traditional reinforcement methods, MICP has advantages such as being environmentally friendly, having low energy consumption, and causing little disturbance to the original soil.

[0005] After microbial mineralization treatment, the mechanical strength of slope soil undergoes significant changes. Therefore, current technologies primarily assess the effectiveness of microbial mineralization through mechanical property testing. Existing soil mechanical strength data collection methods mainly employ static cone penetration tests (CPPTs) or standard penetration tests (SPTs). These methods require operators to make multiple on-site visits for data collection, and they often disturb the slope, potentially affecting soil stability. Utility Model Content

[0006] The purpose of this invention is to provide a slope treatment sensing anchor based on microbial mineralization technology to solve the above-mentioned problems.

[0007] This utility model is achieved through the following technical solution:

[0008] A slope treatment sensing anchor based on microbial mineralization technology includes an anchor body with a sensing component. The sensing component includes a communication module and several baffles. Each baffle has a spring on its side near the anchor body, with one end of the spring fixedly connected to the baffle. The end of the spring away from the baffle is fixedly connected to the side wall of the anchor body. Each outer wall of the baffle has a first strain gauge, and each side wall of the spring has a second strain gauge. Both the first and second strain gauges are electrically connected to the communication module.

[0009] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0010] This utility model, through the design of baffle and spring, uses the spring to continuously apply force to the soil around the anchor body after the spring is compressed, and monitors the change in soil mechanical strength based on the reaction force of the soil feedback to the baffle.

[0011] Compared to existing technologies, this solution enables continuous monitoring of the mechanical strength of the slope soil after the anchor bolt body is installed. Furthermore, no operators are required to be present during data acquisition, significantly improving operational safety and effectively reducing the workload of operators. Since this solution relies on the anchor bolt, unlike existing technologies such as static cone penetration tests or standard penetration tests, the structure inserted into the soil in this solution does not negatively impact slope stability. Instead, it effectively enhances slope stability by increasing shear strength.

[0012] Furthermore, a third strain gauge is installed on each of the two side walls of the baffle, and the third strain gauge is electrically connected to the communication module.

[0013] Beneficial effects: This solution achieves slope stability monitoring through the design of a third strain gauge. At the same time, the device can still maintain a certain data acquisition capability when the spring is fatigued or fully recovered. Compared with the existing technology, this solution can improve the applicability and data acquisition capability of the device.

[0014] Furthermore, the baffles are all evenly arranged along the axis of the anchor bolt body.

[0015] Beneficial effects: Compared with existing technologies, this solution, by evenly arranging the baffles, ensures that the locations of the collected data are also evenly distributed, which helps to improve the representativeness of the data collected by this solution.

[0016] Furthermore, each spring is fitted with a protective sleeve, and the protective sleeve is made of elastic material. One end of the protective sleeve is fixedly connected to the side wall of the adjacent baffle, and the other end of the protective sleeve is fixedly connected to the side wall of the anchor rod body.

[0017] Beneficial effects: This solution, through the design of the protective sleeve, can effectively prevent soil from directly contacting the spring and thus preventing corrosion of the spring. Compared with existing technologies, this solution can effectively improve the service life of the spring, thereby extending the service life of this device.

[0018] Furthermore, the anchor bolt body is also provided with a limiting component, which includes an electromagnet. The electromagnet is fixedly connected to the anchor bolt body, and each of the baffles is provided with a permanent magnet.

[0019] Beneficial effects: The design of the limiting component in this solution, through the cooperation of electromagnet and permanent magnet, enables the baffle to compress the spring when the device is anchored, reducing the damage to the spring caused by external force driving the baffle to move along the axis of the anchor rod body during the anchoring process. Compared with the existing technology, this solution can protect the spring to a certain extent before data acquisition, avoiding data errors caused by spring damage.

[0020] Furthermore, the anchor rod body has a groove on its side wall, and the side wall of the spring closest to the anchor rod body is fixedly connected to the groove side wall.

[0021] Beneficial effects: Compared with existing technologies, this solution, through the design of the groove, allows most of the spring to enter the groove during the compression process when the device is anchored, thereby further protecting the spring and reducing the risk of damage to the spring during the anchoring process.

[0022] Furthermore, each of the second strain gauges is fixedly connected to the adjacent sidewall of the protective sleeve.

[0023] Beneficial effects: Compared with the solution of directly fixing the second strain gauge to the spring, this solution is simpler to install and has lower requirements for installation process, which helps to reduce the manufacturing cost of the device. In addition, the protective sleeve can protect the second strain gauge to a certain extent, which helps to extend the service life of the second strain gauge and further extend the service life of the device.

[0024] Furthermore, the length of the protective sleeve is not greater than the compression height of the spring.

[0025] Beneficial effects: Compared to the protective sleeve solution with a length greater than the spring compression height, this solution ensures that the protective sleeve is always in a deformed state during the spring reset process. This avoids the situation where the protective sleeve is in a relaxed state when the spring begins to reset, making it difficult to calculate the spring length using data collected by the second strain gauge, thus preventing data loss.

[0026] Furthermore, each of the first strain gauges has a waterproof layer on the side away from the baffle, and the waterproof layer is fixedly connected to the adjacent sidewall of the baffle.

[0027] Beneficial effects: This solution, through the design of a waterproof layer, avoids direct contact between the first strain gauge and the soil. Compared with existing technologies, this solution can effectively prevent soil corrosion of the first strain gauge and the influence of groundwater on its operation, thereby improving the service life of the first strain gauge and the accuracy of data acquisition.

[0028] Furthermore, all the springs are arranged coaxially with the adjacent baffles.

[0029] Beneficial effects: Compared with other arrangement schemes, this scheme, by arranging the spring and the baffle coaxially, makes the force applied by the spring to the baffle along the axis of the baffle, thereby reducing torque generation and improving the stability of the baffle during movement. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is an isometric view of the present invention;

[0032] Figure 2 This is a front view of the outer tube;

[0033] Figure 3 for Figure 2 Cross-sectional view along the AA direction;

[0034] Figure 4 for Figure 2 Cross-sectional view along the BB direction;

[0035] Figure 5 for Figure 3 Enlarged view of point C in the middle.

[0036] The reference numerals in the attached figures represent: 1. Anchor bolt body; 2. Sensing component; 21. Baffle; 22. Protective sleeve; 23. Spring; 24. Waterproof layer; 3. First strain gauge. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are for explaining the utility model only and are not intended to limit the utility model. It should be noted that this utility model is already in the actual research and development stage.

[0038] Example 1

[0039] like Figures 1 to 5As shown, this embodiment includes an anchor bolt body 1, on which a sensing component 2 is provided. The sensing component 2 is used to collect the mechanical information of the slope. The sensing component 2 includes a communication module and several baffles 21. The communication module is fixedly connected to the side wall of the anchor bolt body 1 by bolts. The baffles 21 are evenly arranged along the anchor bolt axis. A spring 23 is provided on the side of the baffle 21 near the anchor bolt. One end of the spring 23 is welded and fixed to the baffle. The end of the spring 23 away from the baffle is welded and fixed to the side wall of the anchor bolt body 1. A first strain gauge 3 is bonded and fixed to the outer side wall of the baffle 21. A protective sleeve 22 is provided on the outer side of the spring 23. The protective sleeve 22 is made of elastic material. Both ends of the protective sleeve 22 are bonded and fixed to the adjacent side wall. One end of the protective sleeve 22 is bonded and fixed to the side wall of the adjacent baffle. The other end of the protective sleeve 22 is bonded and fixed to the side wall of the anchor bolt body 1. The first strain gauge 3 and the second strain gauge are electrically connected to the communication module.

[0040] In this embodiment, the anchor body 1 is equipped with a storage battery (not shown in the figure). The storage battery is electrically connected to the first strain gauge 3, the second strain gauge and the communication module. The storage battery is used to power the device. In other embodiments, photovoltaic power generation equipment or wind power generation equipment can be used to power the first strain gauge 3, the second strain gauge and the communication module.

[0041] The anchor bolt body 1 is also provided with a limiting component, which includes an electromagnet. The electromagnet is fixedly connected to the anchor bolt body 1 by bolts, and each of the baffles 21 is fixedly connected with a permanent magnet by bolts.

[0042] Detailed implementation: When using this solution, an external power source is used to power the electromagnet, which generates a magnetic field that attracts the permanent magnet, thereby adsorbing the baffle 21 onto the side wall of the anchor body 1 and compressing the spring 23. Then, the anchor body 1 is anchored into the appropriate position on the slope.

[0043] After the anchor body 1 is installed, the power supply to the electromagnet is cut off. The electromagnet's attraction to the permanent magnet is released, the spring 23 returns to its original position, and pushes the baffle 21 away from the anchor body 1. During this process, the baffle 21 pushes the surrounding soil to move. Due to the resistance of the soil, the spring 23 cannot fully return to its original position. At the same time, since this is the initial stage of slope treatment, the slope soil is relatively loose and has low hardness. The baffle 21 compresses the surrounding soil, causing soil deformation, which creates a gap between the baffle 21 and the anchor body 1. The soil above and below the baffle 21 enters the gap between the baffle 21 and the anchor body 1 under the action of gravity, etc., thus completing the installation of this device.

[0044] During this process, the second strain gauge continuously operates, collecting the second strain information of spring 23. As spring 23 resets, its deformation changes, and the second strain information changes accordingly. Simultaneously, due to the reaction force exerted by the soil on the surface of baffle 21, baffle 21 undergoes slight deformation. Meanwhile, the first strain gauge 3 continuously collects the first strain information of baffle 21, and the communication module sends the first and second strain information to the operator. Since the free length, elastic modulus, elastic limit, and initial compressed length of spring 23 and protective sleeve 22 are all known quantities, the operator can obtain the elastic force change curves of spring 23 and protective sleeve 22 at various time points during the reset process based on the second strain information. By comprehensively judging the change curves of the first strain information and the elastic force change curves of spring 23, the soil hardness change curves at various time points can be obtained, thereby monitoring the degree of slope soil calcification.

[0045] During use, because spring 23 is in an elastic recovery state, the elastic force of spring 23 continuously pushes the baffle 21 to compress the soil, thus causing the soil to continuously exert a reaction force on the baffle 21, causing it to deform, i.e., the first strain information is continuously present. With the activity of microorganisms, the slope soil gradually mineralizes, and the soil mechanical properties change, i.e., the soil mechanical strength (such as stiffness, shear modulus) changes. The force exerted by the baffle 21 on the soil is less likely to cause soil deformation, so the soil absorbs less kinetic energy from the movement of the baffle 21, and the force exerted on the baffle 21 is greater, causing the baffle 21 to undergo more obvious deformation, i.e., the first strain information increases.

[0046] As described above, operators can monitor the changes in the mechanical strength of the soil surrounding the anchor bolt body 1 by monitoring the change curves of the first and second strain information after slope treatment. In other words, operators can monitor the soil at various locations on the slope by anchoring several of these devices into the slope, thereby inferring the effectiveness of the slope treatment.

[0047] Furthermore, since this solution uses the anchor body 1 as the carrier of the sensing component 2, during installation, the anchor body 1 itself can improve the shear strength and overall stability of the slope, further enhancing the slope protection effect. This solution is also simple to operate and causes minimal damage to the soil around the anchor body 1. When dealing with partial temporary support, after the support is completed, the electromagnet power supply can be reconnected, and the baffle 21 can be attracted back to the anchor body 1 via the permanent magnet, thereby reducing soil damage to the baffle 21 and spring 23 when the anchor body 1 is pulled out.

[0048] Meanwhile, the design of the protective sleeve 22 in this solution can prevent soil from entering the gap between two adjacent turns of the spring 23, which would affect the reset or subsequent recycling of the spring 23, and thus affect the operator's judgment of the mechanical strength of the slope soil.

[0049] Example 2

[0050] The difference from the above embodiment is that: third strain gauges are bonded and fixed on both sides of the baffle 21, and the third strain gauges are electrically connected to the communication module.

[0051] The specific implementation method is as follows: After the device is installed, the third strain gauge continues to work, collecting the third strain information on both sides of the baffle, and the communication module continuously transmits the third strain information to the operator. Under normal conditions, the force applied to the soil by the baffle 21 is along the axial direction of the spring 23. Therefore, the baffle 21 does not apply pressure or thrust to the soil at this location, so the soil at this location does not exert a reaction force on the two side walls of the baffle 21. Thus, the deformation of the two side walls of the baffle 21 is only caused by the pressure of the soil's gravity. That is, under normal conditions, the value of the third strain information and its corresponding location fluctuate within a small range.

[0052] During use, if the slope shows a tendency to collapse and the soil moves, the kinetic energy of this movement is transferred to the anchor body 1 or the baffle 21, causing relative displacement between the two. At this time, the baffle 21 moves along the axial position of the anchor body 1. At this time, one side wall of the baffle 21 compresses the soil, and the reaction force exerted by the soil on the side wall of the baffle 21 increases, that is, the deformation of the side wall of the baffle 21 increases. The third strain information at this position increases sharply. The operator can judge whether there is a risk of slope collapse based on the returned third strain information.

[0053] Meanwhile, when facing slopes with excessively loose soil, the slope soil can provide limited resistance to the retaining plate. If the operator makes a mistake and selects a spring 23 with an excessively large elastic modulus, the spring 23 can reset in a short time. This causes the thrust applied to the soil by the side wall of the retaining plate away from the anchor body 1 to disappear, making it difficult for the operator to monitor subsequent changes in soil hardness through the first strain information.

[0054] However, when using microbial technology for slope treatment, the calcification layer often takes one to six months to complete. If the monitoring period is short, the data obtained is difficult to cover the entire treatment cycle, and operators will find it difficult to judge the slope treatment status based on the data obtained.

[0055] If the first strain information does not change significantly within a certain period of time, it can be determined that the spring 23 has fully reset, or that the spring 23 is fatigued due to the continuous reaction force applied by the soil.

[0056] During the calcification process, due to construction or other reasons, the soil inevitably transmits vibrations to the device. When the vibrations are transmitted to the anchor body 1 or the baffle 21, they tend to move relative to each other. At this time, the forces exerted on the surrounding soil by the two side walls of the baffle 21 or the side wall of the baffle 21 away from the anchor body 1 change.

[0057] At this point, the operator uses the third strain information in combination with the second strain information, the elastic modulus of spring 23 and protective sleeve 22, and the size of spring 23 to judge the mechanical strength of the soil around the anchor body 1.

[0058] Compared with the above embodiments, this solution can greatly broaden the scope of application of the device, and during the vibration transmission process, the spring 23 can absorb a part of the kinetic energy, thereby reducing the impact of external vibration on the stability of the anchor body 1 and improving the stability of the slope.

[0059] Example 3

[0060] The difference from the above embodiment is that the baffles 21 are all evenly arranged along the axis of the anchor body 1.

[0061] This scheme, by arranging the baffles 21 evenly along the axis of the anchor bolt body 1, results in a more uniform distribution of the collected data compared to other arrangement schemes, which helps to improve the representativeness of the collected data.

[0062] In this embodiment, a groove is formed on the side wall of the anchor body 1, and the depth of the groove is slightly greater than the compression height of the spring 23. The side wall of the spring 23 near the anchor body 1 is welded and fixed to the side wall of the groove.

[0063] In this design, the groove allows most of the spring 23 to enter the groove when the operator uses an electromagnet and a permanent magnet to attach the baffle 21 to the side wall of the anchor body 1. This effectively prevents external forces parallel to the axis of the anchor body 1 from acting on the baffle 21 during construction, which would cause the baffle 21 to slide along the side wall of the anchor body 1, damaging the spring 23 and affecting the lifespan of the device.

[0064] In this embodiment, the second strain gauges are all bonded and fixed to the inner wall of the adjacent protective sleeve 22, and the length of the protective sleeve 22 is not greater than the compression height of the spring 23.

[0065] Compared to the above embodiments, this solution, which fixes the second strain gauge to the inner wall of the protective sleeve 22, obtains the deformation of the protective sleeve 22 and calculates its deformation based on its elastic modulus and related dimensions, thereby calculating the deformation of the spring 23. Compared to the prior art, this solution makes the installation of the second strain gauge more convenient and avoids potential damage to the second strain gauge during the compression and reset of the spring 23. Furthermore, since the length of the protective sleeve 22 is less than or equal to the compression height of the spring 23, the protective sleeve 22 is always in a stretched state during use, meaning it is always in a deformed state, and the second strain information is always available. Compared to solutions where the length of the protective sleeve 22 is greater than the compression height of the spring 23, this solution avoids the drawback of the spring 23 returning from a compressed state to a state where the length is equal to that of the protective sleeve 22. In such cases, the protective sleeve 22 remains relaxed and does not undergo elastic deformation, thus preventing the monitoring of the spring 23's length change based on the second strain information.

[0066] In this embodiment, a waterproof layer 24 is provided on the side of the first strain gauge 3 away from the baffle 21. In this embodiment, the waterproof layer 24 is a thin polyethylene film, and the waterproof layer 24 is bonded and fixed to the side wall of the adjacent baffle.

[0067] This solution, through the design of the waterproof layer 24, avoids direct contact between the first strain gauge 3 and the soil, thereby reducing soil erosion of the first strain gauge 3 and the intrusion of groundwater during use. This helps to extend the service life of the first strain gauge 3. Compared with the solution of encapsulating or coating the first strain gauge 3, this solution is inexpensive and simple in process, which helps to reduce the overall cost of the device. In addition, the temperature change during installation is small, so the impact on the first strain gauge 3 during installation is small. While improving the service life of the first strain gauge 3, it also reduces the impact on the sensitivity of the first strain gauge 3.

[0068] In this embodiment, all springs 23 are arranged coaxially with the adjacent baffles.

[0069] Compared with the existing technology, this solution arranges the spring 23 and the baffle plate coaxially, so that the force applied by the spring 23 to the baffle plate is arranged along the baffle plate axis, thereby reducing the generation of torque and improving the stability of the baffle plate movement.

[0070] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A slope treatment sensing anchor based on microbial mineralization technology, comprising an anchor body (1), wherein a sensing assembly (2) is arranged on the anchor body (1), characterized in that: The sensing component (2) includes a communication module and several baffles (21). Each baffle (21) is provided with a spring (23) on the side near the anchor body (1). One end of the spring (23) is fixedly connected to the baffle, and the end of the spring (23) away from the baffle is fixedly connected to the side wall of the anchor body (1). Each outer wall of the baffle (21) is provided with a first strain gauge (3), and each side wall of the spring (23) is provided with a second strain gauge. Both the first strain gauge (3) and the second strain gauge are electrically connected to the communication module.

2. The slope management and sensing anchor rod based on microbial mineralization technology according to claim 1, characterized in that: Third strain gauges are installed on both sides of the baffle (21), and the third strain gauges are electrically connected to the communication module.

3. The slope management and sensing anchor rod based on microbial mineralization technology according to claim 1, characterized in that: The baffles (21) are all evenly arranged along the axis of the anchor body (1).

4. The slope management smart anchor based on microbial mineralization technology according to claim 1, characterized in that: The spring (23) is covered with a protective sleeve (22) on the outside, and the protective sleeve (22) is made of elastic material. One end of the protective sleeve (22) is fixedly connected to the side wall of the adjacent baffle, and the other end of the protective sleeve (22) is fixedly connected to the side wall of the anchor body (1).

5. The slope management smart anchor based on microbial mineralization technology according to claim 1, characterized in that: The anchor body (1) is also provided with a limiting component, which includes an electromagnet. The electromagnet is fixedly connected to the anchor body (1), and the baffle (21) is provided with a permanent magnet.

6. The slope treatment sensing anchor based on microbial mineralization technology according to claim 1, characterized in that: The anchor body (1) has a groove on its side wall, and the side wall of the spring (23) near the anchor body (1) is fixedly connected to the side wall of the groove.

7. The slope management smart anchor based on microbial mineralization technology according to claim 4, characterized in that: The second strain gauge is fixedly connected to the side wall of the adjacent protective sleeve (22).

8. The slope management smart anchor based on microbial mineralization technology according to claim 7, characterized in that: The length of the protective sleeve (22) is not greater than the compression height of the spring (23).

9. The slope management smart anchor based on microbial mineralization technology according to claim 1, characterized in that: The first strain gauge (3) is provided with a waterproof layer (24) on the side away from the baffle (21), and the waterproof layer (24) is fixedly connected to the adjacent side wall of the baffle.

10. The slope management smart anchor based on microbial mineralization technology according to claim 1, characterized in that: The springs (23) are all arranged coaxially with the adjacent baffles.

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