Deep slope reinforcing device based on microorganisms

Abstract

The utility model discloses a deep slope reinforcing device based on microorganisms, which relates to the field of reinforcing equipment, and adopts the technical scheme that the deep slope reinforcing device comprises a liquid injection pipe and a liquid container, an upper port of the liquid injection pipe is communicated with the liquid container, a plurality of liquid injection holes are distributed in the side wall of the liquid injection pipe, and outer ports of the liquid injection holes are concavely arranged towards the interior of the liquid injection pipe. According to the scheme, reinforcing liquid can be more easily injected into the soil body through the inwards-concave liquid conveying hole, the liquid containing container and the pressurizing device, the pressurizing cost is very low, and the continuity is good.

Description

Technical Field

[0001] The utility model relates to the field of reinforcement equipment, in particular to a deep slope reinforcement device based on microorganisms. Background Art

[0002] Slope reinforcement is a key area in civil engineering, especially in industries such as construction, transportation and resource development. Its purpose is to ensure the stability of the slope, prevent landslides, and protect the safety of people and property. One of the current related slope reinforcement technologies is the technology of using microbial reinforcement. By injecting microorganisms into the soil, the microorganisms mineralize the soil, thereby achieving the purpose of reinforcement. Related solutions such as the patent with publication number CN115182363A have announced a technical solution. The invention discloses a slope reinforcement device and method based on microbial mineralization. There are some drawbacks in the actual use of this solution, which is mainly reflected in the difficulty in injecting the reinforcing liquid. In order to facilitate the injection, the solution uses a grouting pump to increase the grouting pressure, but in fact the injection process is to penetrate into the soil. Simply increasing the pressure for a long time is costly and the pressurization effect is not ideal. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a deep slope reinforcement device based on microorganisms, which injects reinforcing liquid into the soil. The concave infusion hole, liquid container and pressurizing device make it easier to inject the reinforcing liquid into the soil. The pressurizing cost is very low and the sustainability is good.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a microbial deep slope reinforcement device, comprising a liquid injection pipe and a liquid container;

[0005] The upper end of the liquid injection pipe is communicated with the liquid container, and a plurality of liquid injection holes are distributed on the side wall of the liquid injection pipe. The outer ends of the liquid injection holes are concavely arranged toward the liquid injection pipe.

[0006] During use, the injection tube is inserted into the hole in the slope that needs reinforcement. The reinforcing liquid (fixative, bacterial, and binder) is then placed in a container and infiltrated into the soil through the injection hole. The liquid then reacts within the soil, reinforcing the soil. Because the injection hole in this solution is concave, soil is less likely to enter and clog the hole when the tube is inserted, ensuring that the reinforcing liquid can flow smoothly out of the hole and penetrate into the soil.

[0007] Preferably, the lower end of the injection tube is a tapered penetration head, which is convenient for downward insertion into the hole.

[0008] Preferably, the liquid storage container is connected to each of the liquid injection pipes through a liquid distribution pipeline. Through one liquid storage container, the reinforcement liquid can be provided to multiple liquid injection pipes at the same time.

[0009] Preferably, the injection pipe comprises a plurality of sub-pipes connected end to end, so as to more flexibly adjust the length of the injection pipe according to the hole.

[0010] Preferably, a sleeve is provided between the liquid distribution pipe and the liquid injection pipe, a first pressure sensor is provided in the sleeve, and a valve is provided between the sleeve and the liquid injection pipe. During use, the valves can be closed before liquid injection, and when the first pressure sensors detect the same pressure, the valves are opened simultaneously to inject liquid into the liquid injection pipes, so that each liquid injection pipe can be injected simultaneously.

[0011] Preferably, a monitor is included, comprising a monitoring tube having monitoring cavities disposed on its outer wall. A fiber optic strain gauge and a second pressure sensor are disposed on the outer wall of the monitoring cavity. The fiber optic strain gauge and the second pressure sensor are connected to a control terminal via a wiring harness extending outward from an inner hole of the monitoring tube. The monitoring tube is inserted into the soil at a distance from the injection tube. The fiber optic strain gauge and the second pressure sensor can monitor soil changes to determine whether the soil reinforcement has been achieved.

[0012] Preferably, the outer wall of the monitoring cavity is made of a transparent material. A light source and a camera are disposed within the monitoring cavity, directed toward the outer wall. The light source and camera are each electrically connected to the wiring harness. The light source is used to provide light for image acquisition by the camera, which can observe soil changes to determine the distribution of calcium carbonate within the reinforced soil.

[0013] Preferably, the monitoring tube comprises a plurality of sub-segments connected end to end, each of which is provided with the monitoring cavity, so as to facilitate adjustment of the appropriate monitoring tube length according to actual conditions.

[0014] Preferably, the liquid container is provided with a pressure hole, which is connected to a pressure device, so as to provide pressure to the liquid container and inject the reinforcement solution into the soil.

[0015] Preferably, the pressurizing device includes an air cylinder, the front end of which is provided with an air outlet nozzle adapted to the pressurizing hole, a piston slidably fitted inside the air cylinder, a spring for pushing the piston forward provided inside the air cylinder, the piston being fixed to the front end of a pull rod, the rear end of the pull rod being passed through the rear end of the air cylinder. During use, the pull rod pulls the piston, which is pushed forward by the spring to form a higher air pressure, pushing the reinforcing liquid into the soil. The pressure provided by the spring is continuous and can provide pressure for a long time, slowly injecting the reinforcing liquid into the soil, resulting in a better reinforcement effect.

[0016] Beneficial effects of the utility model:

[0017] This solution's concave infusion holes, liquid containers, and pressurizing device facilitate injection of the reinforcement liquid into the soil, facilitating soil reinforcement and minimizing soil disturbance. This also improves the soil's mechanical properties, resulting in very low pressurization costs and excellent sustainability. Due to its improved properties, the reinforced soil can be treated as an earth retaining wall, effectively preventing slope displacement. This solution can be removed and reused after use, reducing costs, being economical, and environmentally friendly. Monitoring components can detect soil changes, providing a more accurate picture of the reinforcement's effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only five of the drawings of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of a liquid injection tube according to an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a monitor according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of an embodiment of the present utility model arranged on a slope;

[0022] Figure 4 This is a schematic diagram of the principle of an embodiment of the present utility model;

[0023] Figure 5 A schematic diagram of a pressurizing device according to an embodiment of the present invention;

[0024] Among them, 1. liquid injection tube; 2. liquid injection hole; 3. conical penetration head; 4. sleeve; 5. valve; 6. first pressure sensor; 7. liquid distribution pipeline; 8. liquid container; 9. pressurization hole; 10. monitor; 11. light source; 12. camera; 13. optical fiber strain element; 14. second pressure sensor; 15. monitoring cavity; 16. control end; 17. air cylinder; 18. piston; 19. pull rod; 20. spring. DETAILED DESCRIPTION

[0025] In order to deepen the understanding of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0026] Example

[0027] like Figure 1 As shown, a microbial deep slope reinforcement device includes an injection pipe 1 and a liquid container 8; the upper end of the injection pipe 1 is connected to the liquid container 8, and a plurality of injection holes 2 are distributed on the side wall of the injection pipe 1, and the outer end of the injection hole 2 is concave toward the injection pipe 1.

[0028] Combine Figure 3 As shown, during use, the injection tube 1 is inserted into the hole in the slope that needs to be reinforced. Then, the reinforcing liquid (fixative liquid, bacterial liquid, and binder) in the liquid container 8 is infiltrated into the slope soil through the injection hole 2 of the injection tube 1. The reinforcing liquid reacts in the soil, achieving the effect of reinforcing the soil. Because the injection hole 2 of this solution adopts a concave structure, when the injection tube 1 is inserted into the hole, soil is not likely to enter and block the injection hole 2, which can ensure that the reinforcing liquid can smoothly flow out of the injection hole 2 and penetrate into the soil.

[0029] The construction principle is: according to the height of the slope, the injection pipe 1 is staggered up and down at the same level and at a certain depth into the soil, so that the liquid such as bacterial liquid and reinforcement liquid can achieve the effect of deep reinforcement according to the seepage path of the liquid;

[0030] The lower end of the injection tube 1 is a tapered penetration head 3, which is convenient for downward insertion into the hole.

[0031] The liquid container 8 is connected to each of the liquid injection pipes 1 through a liquid distribution pipe 7. One liquid container 8 can provide reinforcing liquid to multiple liquid injection pipes 1 at the same time.

[0032] The injection pipe 1 comprises a plurality of sub-pipes which are connected end to end, so as to adjust the length of the injection pipe 1 more flexibly according to the hole.

[0033] A sleeve 4 is provided between the liquid distribution pipe 7 and the liquid injection pipe 1. A first pressure sensor 6 is provided in the sleeve 4. A valve 5 is provided between the sleeve 4 and the liquid injection pipe 1. During use, the valves 5 can be closed before liquid injection. When the first pressure sensors 6 detect the same pressure, the valves 5 are opened simultaneously to inject liquid into the liquid injection pipes 1, so that all the liquid injection pipes 1 can be injected at the same time.

[0034] Combine Figure 2 and Figure 4 As shown, the monitor 10 includes a monitoring tube with monitoring cavities 15 distributed along its outer wall. Fiber optic strain gauges 13 and second pressure sensors 14 are mounted on the outer wall of the monitoring cavities 15. These cavities 15 are connected to a control terminal 16 via a wiring harness that extends outward from the inner bore of the monitoring tube. The monitoring tube is inserted into the soil at a distance from the injection tube 1. The fiber optic strain gauges 13 and second pressure sensors 14 can monitor soil changes to determine whether the soil reinforcement has been achieved.

[0035] The outer wall of the monitoring cavity 15 is made of a transparent material. A light source 11 and a camera 12 are located within the monitoring cavity 15, pointing toward the outer wall. Both the light source 11 and the camera 12 are electrically connected to the wiring harness. The light source 11 is used to capture images for the camera 12, which can observe soil changes to determine the distribution of calcium carbonate within the reinforced soil.

[0036] The monitoring tube comprises a plurality of sub-sections connected end to end, each of which is provided with the monitoring cavity 15, so as to facilitate adjustment of the appropriate monitoring tube length according to actual conditions.

[0037] The liquid container 8 is provided with a pressure hole 9, which is connected to a pressure device, so as to provide pressure to the liquid container 8 and inject the reinforcement solution into the soil.

[0038] The pressurizing device includes an air cylinder 17, the front end of which is provided with an air outlet nozzle adapted to the pressurizing hole 9, a piston 18 slidingly fitted inside the air cylinder 17, a spring 20 for pushing the piston 18 forward provided inside the air cylinder 17, the piston 18 being fixed to the front end of a pull rod 19, the rear end of the pull rod 19 being passed through the rear end of the air cylinder 17. When in use, the pull rod 19 pulls the piston 18, which is pushed forward by the spring 20 to form a higher air pressure, pushing the reinforcing liquid into the soil. The pressure provided by the spring 20 is continuous and can provide pressure for a long time, slowly injecting the reinforcing liquid into the soil, resulting in a better reinforcement effect.

[0039] During use, the conical penetration head 3 is connected to the injection pipe 1 through a thread. After the simple assembly is completed, the pipe is penetrated into the equipment, or the assembled pipe is placed to a specified depth underground after drilling. The pipe layout adopts a fixed spacing arrangement for the same level slopes, and a staggered arrangement for different levels of slopes. The spacing between pipes of the same level is more appropriate to be 1 to 3 meters, and the upper and lower staggered arrangements ensure the uniformity of reinforcement. After the pipeline work is completed, the remote control sleeve 4 is connected to the pipeline, and then the pipe connection sleeve 4 is used to connect the liquid storage box to complete the installation of the pipeline, sleeve 4 and box. Subsequently, the assembled monitoring device is assembled and arranged on the slope to be reinforced. Note that the layout position should be set in the middle of the injection pipe 1 to more accurately monitor the reinforcement effect. Finally, the remote control receiving system of the terminal system sleeve 4 and the monitoring device are connected.

[0040] During the construction process, first open the liquid container 8 and clean out the debris inside, and then start the reinforcement construction. In order to ensure the uniformity and simultaneity of the reinforcement, the valve 5 in the sleeve 4 is closed. When the liquid pressure sensor in the sleeve 4 reaches a certain value, the terminal system remotely controls the opening of the sleeve 4 valve 5. Before the reinforcement begins, turn on the monitoring system to record the data of the sensing element and the pressure sensor in real time. During the reinforcement process, observe the data changes and monitor the calcification in the soil through the micro camera 12. During the reinforcement, the reinforcement is carried out in the order of fixative, bacterial solution, and cementing solution. First, inject the fixative. The fixative is a 1mol / L CaCl2 solution that is poured along the liquid seepage path under the action of its own weight. Secondly, after the fixative solution is injected, to prevent chemical reactions between the bacterial solution and the fixative solution within the pipe, which could block the pipe or injection port 2, a sufficient amount of clean water should be introduced to clean any remaining fixative solution. The bacterial solution should then be injected. The OD600 of the injected solution should be >2.0, and the urease activity should be 350-500 μs / cm as measured by a conductivity meter. After the bacterial solution is injected, it should be allowed to stand for 8-12 hours to ensure uniform distribution throughout the soil to be reinforced. Finally, a binder solution containing a mixture of 1 mol / L CaCl2 and 0.5 mol / L urea should be introduced. This solution provides a rich source of calcium and nitrogen, enabling faster carbonate crystallization and enhancing cohesion between soil particles. The above steps constitute a single reinforcement process. To ensure stability, 3-5 reinforcement cycles are recommended. To further enhance the reinforcement effect, new pipes can be installed at the same level and staggered for reinforcement.

[0041] Beneficial effects of the utility model:

[0042] This solution's recessed infusion holes, liquid container, and pressurizing device facilitate injection of the reinforcement liquid into the soil, facilitating soil reinforcement, minimizing soil disturbance, and enhancing its mechanical properties. Due to its improved performance, the reinforced soil can be used as a retaining wall, effectively preventing slope displacement. After use, this solution can be removed and reused, reducing costs and being both economical and environmentally friendly. Monitoring components can monitor soil changes, providing a more accurate picture of the reinforcement's effectiveness.

[0043] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A deep slope reinforcement device based on microorganisms, characterized in that: It comprises a liquid injection pipe (1) and a liquid container (8); The upper end of the liquid injection pipe (1) is in communication with the liquid container (8), and a plurality of liquid injection holes (2) are distributed on the side wall of the liquid injection pipe (1), and the outer ends of the liquid injection holes (2) are concavely arranged toward the liquid injection pipe (1); The monitor (10) includes a monitoring tube, wherein a monitoring cavity (15) is distributed on the outer wall of the monitoring tube, and an optical fiber strain element (13) and a second pressure sensor (14) are provided on the outer wall of the monitoring cavity (15). The optical fiber strain element (13) and the second pressure sensor (14) are connected to a control end (16) via a wiring harness, and the wiring harness extends outward from an inner hole of the monitoring tube; The outer wall of the monitoring cavity (15) is made of a transparent material. A light source (11) and a camera (12) pointing toward the outer wall of the monitoring cavity (15) are provided in the monitoring cavity (15). The light source (11) and the camera (12) are electrically connected to the wiring harness respectively.

2. The microbial deep slope reinforcement device according to claim 1 is characterized in that: The lower end of the liquid injection tube (1) is a conical penetration head (3).

3. The microbial deep slope reinforcement device according to claim 1 is characterized in that: The liquid storage container (8) is connected to each of the liquid injection pipes (1) through a liquid distribution pipe (7).

4. The microbial deep slope reinforcement device according to claim 3 is characterized by: The liquid injection pipe (1) comprises a plurality of sub-pipes which are screwed together end to end.

5. The microbial deep slope reinforcement device according to claim 4 is characterized in that: A sleeve (4) is provided between the liquid distribution pipeline (7) and the liquid injection pipe (1), a first pressure sensor (6) is provided in the sleeve (4), and a valve (5) is provided between the sleeve (4) and the liquid injection pipe (1).

6. The microbial deep slope reinforcement device according to claim 1 is characterized in that: The monitoring tube comprises a plurality of sub-sections which are connected end to end, and each sub-section is provided with the monitoring cavity (15).

7. The microbial deep slope reinforcement device according to claim 1 is characterized in that: The liquid container (8) is provided with a pressurizing hole (9), and the pressurizing hole (9) is connected to a pressurizing device.

8. The microbial deep slope reinforcement device according to claim 7 is characterized in that: The pressurizing device includes an air cylinder (17), the front end of the air cylinder (17) is provided with an air outlet nozzle adapted to the pressurizing hole (9), a piston (18) is slidably fitted in the air cylinder (17), a spring (20) is provided in the air cylinder (17) for pushing the piston (18) forward, the piston (18) is fixed to the front end of the pull rod (19), and the rear end of the pull rod (19) is passed through the outside of the rear end of the air cylinder (17).

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