Green carbon sequestration synergistic rock-soil anchoring method and device

Abstract

The invention provides a green carbon sequestration synergistic rock-soil anchoring method and device. The method comprises the following steps that an anchor rod I and an anchor rod II are mounted in a porous rock-soil medium to be anchored; cO2 is diffused into the rock-soil medium through the anchor rod, at least part of CO2 is dissolved in water in the rock-soil medium, and CO3 < 2-> is formed; a solution containing Ca < 2 + > is diffused into a rock-soil medium through the first anchor rod or the second anchor rod; wherein under the condition that the second anchor rod is utilized, the second anchor rod is adjacent to the first anchor rod; cO3 < 2-> and Ca < 2 + > are combined to form CaCO3 particles, the amount of the particles is increased, and a calcareous cemented reinforcing layer is formed in a rock-soil medium around the anchor rod. The method has the beneficial effects that the reinforcing effect is achieved, meanwhile, emission-free CO2 capture, the carbon sequestration technology and the carbon coagulation reinforcing technology are combined, the long-term carbon reduction effect is achieved in anchoring engineering, meanwhile, the rock-soil body can be reinforced along with time, the anchoring supporting effect is improved, and engineering benefits are improved.

Description

Technical Field

[0001] The present invention relates to geotechnical anchoring technology, and more specifically, to a green carbon sequestration and efficiency improvement geotechnical anchoring method and device. Background Art

[0002] Carbon sequestration in underground carbon sequestration technology, also known as carbon capture and storage, refers to the process of capturing carbon and safely storing it to replace the direct emission of CO 2 into the atmosphere.

[0003] Geotechnical anchoring technology is an engineering technology that buries tension members into the ground to improve the strength and self-stability of geotechnical materials. In the past more than a hundred years, geotechnical anchoring technology has been developed and applied extensively, and has been widely used in engineering projects such as mines, transportation, construction, and water conservancy.

[0004] However, there is currently no engineering technology that combines green carbon sequestration technology with anchoring structures. If green carbon sequestration technology can be used to capture CO 2 from the air and use it to reinforce rock masses, soil masses and other structures in anchoring structures, such technology will have great economic prospects and long-term ecological benefits. Therefore, the present invention proposes a green carbon sequestration and efficiency improvement geotechnical anchoring method and device. This device not only has the anchoring effect of traditional anchoring structures, but also combines carbon capture without emissions, carbon sequestration technology, and carbon condensation reinforcement technology, enabling the anchoring project to not only play a long-term carbon reduction role, but also reinforce geotechnical materials over time, improve the anchoring and support effect, and enhance engineering efficiency. 2 Summary of the Invention

[0005] The purpose of the present invention is to solve at least one of the above deficiencies existing in the prior art. For example, one of the purposes of the present invention is to provide a green carbon sequestration and efficiency improvement geotechnical anchoring method and device; this device not only has the anchoring effect of traditional anchoring structures, but also combines carbon capture without emissions, carbon sequestration technology, and carbon condensation reinforcement technology, enabling the anchoring project to not only play a long-term carbon reduction role, but also reinforce geotechnical materials over time, improve the anchoring and support effect, and enhance engineering efficiency. 2

[0006] ​​To achieve the above object, on the one hand, the present invention provides a green carbon sequestration and efficiency-enhancing geotechnical anchoring device, including anchor rod A. The rod body of the anchor rod A has a plurality of small pores that are permeable to water and air and has the property of capillary water absorption. The left end of the anchor rod A is connected to an immersion box, and the solution in the immersion box can diffuse to the right end of the anchor rod A under the action of the capillary water absorption property of the rod body of the anchor rod A and simultaneously diffuse to the outside of the anchor rod A. The immersion box is provided with an inlet for inputting a calcium ion solution. Along the length direction of the anchor rod A, an air duct is inserted from the left end of the immersion box. The right end of the air duct is located inside the anchor rod A and is provided with air outlet holes to facilitate the input of CO 2 gas.

[0007] The anchor rod A generates a pushing effect on the liquid in the porous medium by means of air pressure, and can diffuse CO 2 and Ca 2+ into the geotechnical medium. At least part of the CO 2 dissolves in the water in the geotechnical medium and forms CO 3 2- ; Ca 2+ and CO 3 2- meet and form CaCO 3 particles during the diffusion process into the pores of the soil or rock around the outside of the anchor rod. As the amount of particles increases, they deposit and cement to form a calcareous cemented reinforcement layer in the geotechnical body around the anchor rod, thereby playing a role in reinforcing the relevant engineering structure and simultaneously achieving the carbon sequestration effect.

[0008] In a preferred embodiment of this solution, the rod body of the anchor rod A is made of porous basalt fiber-reinforced polymer BFRP, or porous carbon fiber-reinforced infiltration material, or porous glass fiber-reinforced infiltration material, so that the anchor rod A has the property of capillary water absorption.

[0009] The main material of the rod body of the anchor rod is porous basalt limit-reinforced polymer BFRP, which has certain water and air permeability and capillary water absorption properties, and also has excellent properties such as high tensile strength, low density, and corrosion resistance.

[0010] In a preferred embodiment of this solution, the right end of the anchor rod A is connected to an anchoring section, and a tray is provided outside the left end, and the tray is located on the right side of the immersion box.

[0011] In a preferred embodiment of this solution, both the left part of the rod body of the anchor rod A and the outside of the anchoring section are provided with concave and convex patterns; after installation, the tray is bonded to the concave and convex patterns at the left part of the rod body of the anchor rod by fixing glue, and the anchoring section is fixed in the geotechnical medium by fixing glue.

[0012] In a preferred embodiment of this solution, a cavity is horizontally opened inside the anchor rod A, and the main body of the air duct is arranged in the cavity and forms an exhaust passage with the inner wall of the cavity; on the left part of the anchor rod A, a plurality of waste gas discharge ports are opened on the left side of the tray, and the waste gas discharge ports are connected to the left end of the exhaust passage, so that the excess gas can be discharged to the outside of the rod body through the waste gas discharge ports.

[0013] On the other hand, the present invention also provides another green carbon sequestration and efficiency-enhancing geotechnical anchoring device, including an anchor rod B; the anchor rod B includes an anchor rod body, and an insulator is arranged in the middle of the anchor rod body to divide the anchor rod body into an outer section of the anchor rod body and an inner section of the anchor rod body; the insulator is insulating, impermeable to water and airtight; both the outer section of the anchor rod body and the inner section of the anchor rod body have a plurality of small pores that are permeable to water and air, and have the characteristic of capillary water absorption;

[0014] The left end of the outer section of the anchor rod body is butted with a liquid immersion box, and the liquid in the liquid immersion box can diffuse to the right end of the outer section of the anchor rod body under the action of the capillary water absorption characteristic of the outer section of the anchor rod body, and at the same time diffuse to the outside of the outer section of the anchor rod body; the liquid immersion box is provided with an inlet for inputting water; along the length direction of the outer section of the anchor rod body, an air duct is inserted from the left end of the liquid immersion box, and the right end of the air duct is located inside the outer section of the anchor rod body and is provided with air outlet holes to facilitate the input of CO 2 gas;

[0015] An immersion cavity is opened on the left side inside the inner section of the anchor rod body, one end of a liquid conduit is communicated with the immersion cavity, and the other end of the liquid conduit is led out of the anchor rod B from the left end of the outer section of the anchor rod body to introduce a calcium ion solution into the immersion cavity. The calcium ion solution can diffuse to the right end of the inner section of the anchor rod body under the action of the capillary water absorption characteristic of the inner section of the anchor rod body, and at the same time diffuse to the outside of the inner section of the anchor rod body.

[0016] In a preferred embodiment of this solution, both the outer section of the anchor rod body and the inner section of the anchor rod body are prepared from porous basalt fiber reinforced polymer BFRP, so that both the outer section of the anchor rod body and the inner section of the anchor rod body have the characteristic of capillary water absorption.

[0017] In a preferred embodiment of this solution, a positive electrode is arranged on the right side of the immersion cavity inside the inner section of the anchor rod body. One end of a positive electrode wire is connected to the positive electrode, and the other end of the positive electrode wire is led out of the anchor rod B from inside the liquid conduit and connected to an external power supply; this electrode generates a positive electric field in the surrounding ionic solution, and under the action of the electric field, it accelerates the diffusion of Ca 2+ ions into the pores of the surrounding rock and soil mass. At the same time, the air duct inside the outer section of the anchor rod body is directly made of a conductive material, and the air duct is connected to an external power supply to form a negative electrode; this electrode generates a negative electric field in the surrounding ionic solution, and under the action of this electric field, it accelerates the diffusion of CO 3 2- into the pores of the surrounding rock and soil mass.

[0018] The electrode functions to drive the movement of charged ions, enabling CO 3 2- to diffuse through the pores of the rock and soil mass under the electric field of the negative electrode; enabling Ca 2+ to diffuse through the pores of the rock and soil mass under the electric field of the positive electrode. When the two ions meet initially, a reaction occurs.

[0019] In a preferred embodiment of this solution, the right end of the inner-section anchor rod body is connected to an anchoring section, and a tray is adhesively bonded to the outside of the left end of the outer-section anchor rod body, and the tray is located on the right side of the liquid immersion box.

[0020] Furthermore, in a preferred embodiment of this solution, both the left part of the outside of the outer-section anchor rod body and the outside of the anchoring section are provided with concave and convex patterns; after installation, the tray is adhesively bonded to the concave and convex patterns on the left part of the outer-section anchor rod body through a fixing glue, and the anchoring section is fixed in the rock and soil medium through a fixing glue.

[0021] In a preferred embodiment of this solution, a cavity is also horizontally opened inside the outer-section anchor rod body, the main body of the air guide pipe is arranged in the cavity and forms an exhaust channel with the inner wall of the cavity; on the left part of the outer-section anchor rod body, a plurality of waste gas discharge ports are opened on the left side of the tray, and the waste gas discharge ports are connected to the left end of the exhaust channel so that the excess gas can be discharged to the outside of the rod body through the waste gas discharge ports.

[0022] On the other hand, the present invention also provides another green carbon sequestration and efficiency-enhancing rock and soil anchoring device, including anchor rod C and anchor rod D, and anchor rod C and anchor rod D are adjacent anchor rods (for combined function); both the anchor rod bodies of anchor rod C and anchor rod D have a plurality of small water-permeable and air-permeable pores and have the property of capillary water absorption; the left ends of the anchor rod bodies of anchor rod C and anchor rod D are respectively butted with liquid immersion box C and liquid immersion box D;

[0023] The liquid in liquid immersion box C can diffuse to the right end of anchor rod C under the action of the capillary water absorption property and at the same time diffuse to the outside of anchor rod C, and the liquid in liquid immersion box D can diffuse to the right end of anchor rod D under the action of the capillary water absorption property and at the same time diffuse to the outside of anchor rod D; liquid immersion box C and liquid immersion box D are respectively provided with an inlet to facilitate the corresponding input of water and calcium ion solution into anchor rod C and anchor rod D inside;

[0024] Along the length direction of anchor rod C, an air guide pipe is inserted from the left end of liquid immersion box C, and the right end of the air guide pipe is located inside anchor rod C and is provided with an air outlet to facilitate the input of CO 2 gas.

[0025] In a preferred embodiment of this solution, on anchor rod D, along the length direction of anchor rod D, a positive electrode is inserted from the left side of liquid immersion box D to the right; the air guide pipe is made of a conductive material, and the air guide pipe is connected to an external power source to form a negative electrode.

[0026] The anchor rod C diffuses CO into the geotechnical medium 3 2- and the anchor rod D diffuses Ca into the geotechnical medium 2+ ; The anchor rods C and D must be used simultaneously and installed at intervals (the spacing can be determined according to the general anchoring design method). CO 3 2- and Ca 2+ move towards each other under the drive of the electric field and form CaCO 3 particles in the rock mass medium, and gradually accumulate to form calcareous cementation for reinforcement.

[0027] In a preferred embodiment of this solution, the rod bodies of the anchor rod C and the anchor rod D are both made of porous basalt fiber-reinforced polymer BFRP, so that the rod bodies of the anchor rods all have the property of capillary water absorption.

[0028] In a preferred embodiment of this solution, the right ends of the anchor rod C and the anchor rod D are respectively connected with an anchoring section, and the outer parts of their left ends are respectively bonded with a tray, and the tray is located on the right side of the immersion box C or the immersion box D.

[0029] In a preferred embodiment of this solution, a cavity is also horizontally opened inside the anchor rod C, the main body of the air guide pipe is arranged in the cavity and forms an exhaust channel with the inner wall of the cavity; on the left part of the anchor rod C, a plurality of exhaust ports are opened on the left side of the tray, and the exhaust ports are communicated with the left end of the exhaust channel, so that the redundant gas can be discharged to the outside of the rod body of the anchor rod C through the exhaust ports.

[0030] On the other hand, the present invention also provides a green carbon sequestration and efficiency-enhancing geotechnical anchoring method for anchoring geotechnical media, including the following steps:

[0031] Using an anchor rod to diffuse CO into the geotechnical medium 2 , at least part of the CO 2 dissolves in the water in the geotechnical medium and forms CO 3 2- ;

[0032] And using an anchor rod one or an anchor rod two to diffuse a solution containing Ca 2+ into the geotechnical medium; wherein, in the case of using the anchor rod two, the anchor rod two is adjacent to the anchor rod one;

[0033] CO 3 2- and Ca 2+ combine to form CaCO 3 particles and the amount of particles increases, and a reinforced layer of calcareous cementation is formed in the geotechnical medium around the anchor rod.

[0034] In a preferred embodiment of the present solution, the shanks of the first bolt and the second bolt are both made of porous basalt fiber reinforced polymer (BFRP) so that the shanks have multiple small pores for water and air permeability and have capillary water absorption characteristics.

[0035] Compared with the prior art, the beneficial effects of the present invention include at least one of the following:

[0036] (1) A green carbon sequestration and efficiency-enhancing geotechnical anchoring method and device proposed in this solution can diffuse Ca 2+ and CO 3 2- into the pores of the soil or rock mass through the bolt. During the diffusion process of Ca 2+ and CO 3 2- to the pores of the soil or rock mass around the outside of the bolt, they meet and form CaCO 3 particles. As the amount of particles increases, sedimentation and cementation occur to form a calcareous cemented reinforcement layer in the geotechnical mass around the bolt. The CaCO 3 particles form calcareous cement between the mineral particles in the geotechnical mass through colloid action, which can reinforce the geotechnical mass itself, improve the mechanical properties such as the strength and deformation modulus of the rock mass, play a role in reinforcing the geotechnical mass, improving the reinforcement effect between the anchoring structure and the geotechnical mass, or improving the stability of the geotechnical mass and related structures.

[0037] (2) This solution can utilize a carbon capture device to diffuse CO 2 through the bolt into the water-containing soil or rock mass. Eventually, CO 2 reacts with Ca 2+ to form CaCO 3 particles, which accumulate and cement in the pores of the geotechnical mass, and then utilize the multi-porous characteristics of the geotechnical mass to store carbon.

[0038] (3) The device in this solution has low requirements for the stability of energy supply during the entire carbon sequestration process. It can largely adopt low-quality green energy such as solar energy and wind energy, and the carbon sequestration process is green and emission-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Through the following description in conjunction with the drawings, the above and other objects and / or features of the present invention will become clearer, where:

[0040] Figure 1 The structural schematic diagram of bolt A of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring device of the present invention is shown.

[0041] Figure 2Schematic diagram of the infiltration direction of the calcium ion solution in the porous medium in Anchor Bolt A of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring device of the present invention.

[0042] Figure 3 Schematic diagram of the flow direction of CO 2 in Anchor Bolt A of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring device of the present invention.

[0043] Figure 4 Schematic diagram of the structure of Anchor Bolt B of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring method and device of the present invention.

[0044] Figure 5 Schematic diagram of the water infiltration direction and the conveying direction of CO 2 in Anchor Bolt B of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring device of the present invention.

[0045] Figure 6 Schematic diagram of the conveying direction of the calcium ion solution in Anchor Bolt B of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring device of the present invention.

[0046] Figure 7 Schematic diagram of the structure of Anchor Bolt C of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring method and device of the present invention.

[0047] Figure 8 Schematic diagram of the water infiltration direction and the conveying direction of CO 2 in Anchor Bolt C of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring device of the present invention.

[0048] Figure 9 Schematic diagram of the structure of Anchor Bolt D of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring device of the present invention.

[0049] Figure 10 Schematic diagram of the conveying direction of the calcium ion solution in Anchor Bolt D of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring device of the present invention.

[0050] Figure 11 Schematic diagram of the structure of the carbon capture device of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring device of the present invention.

[0051] Figure 12 Schematic diagram of the supply device of the Ca 2+ ion solution of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring device of the present invention.

[0052] Figure 13The schematic diagram of the principle of an exemplary embodiment of a green carbon sequestration and efficiency-enhancing geotechnical anchoring method and device of the present invention is shown.

[0053] Main reference numerals description:

[0054] 1. Anchor rod A; 2. Anchor rod B; 3. Anchor rod C; 4. Anchor rod D; 5. Air pipe; 6. CO 2 Semi-permeable membrane; 7. Cylinder; 1-1. Air guide pipe A; 1-2. Liquid immersion box A; 1-3. Anchoring section A; 1-4. Tray A; 1-5. Exhaust gas outlet A; 1-6. Hemispherical cavity A; 1-7. Fixing glue A; 2-1. Air guide pipe B; 2-2. Liquid immersion box B; 2-3. Anchoring section B; 2-4. Tray B; 2-5. Exhaust gas outlet B; 2-6. Hemispherical cavity B; 2-7. Liquid immersion cavity B; 2-8. Outer section of anchor rod body; 2-9. Inner section of anchor rod body; 2-10. Positive electrode B; 2-11. Fixing glue B; 2-12. Insulator B; 2-13. Liquid conduit B; 3-1. Air guide pipe C; 3-2. Liquid immersion box C; 3-5. Exhaust gas outlet C; 3-6. Hemispherical cavity C; 4-1. Positive electrode D; 4-2. Liquid immersion box D; 7-1. Piston; 7-2. Air suction port; 7-3. Exhaust port. Detailed implementation manners

[0055] Hereinafter, a green carbon sequestration and efficiency-enhancing geotechnical anchoring method and device of the present invention will be described in detail with reference to exemplary embodiments.

[0056] It should be noted that "up", "down", "front", "back", "left", "right", "inside", "outside", etc. are only for the convenience of description and to form relative orientation or positional relationships, and do not indicate or imply that the components referred to must have such specific orientations or positions.

[0057] Embodiment 1

[0058] This embodiment provides a green carbon sequestration and efficiency-enhancing geotechnical anchoring method, which is applicable to anchoring porous geotechnical media, such as Figure 13 As shown, this method releases carbonate ions and calcium ions around the anchor rod through the anchor rod, and the carbonate ions combine with the calcium ions to form CaCO 3 Particles. As the amount of particles increases, sedimentary cementation forms a calcareous cemented reinforcement layer in the surrounding geotechnical body of the anchor rod, thereby playing a role in strengthening the relevant engineering structure.

[0059] Specifically, a green carbon sequestration and efficiency-enhancing geotechnical anchoring method includes the following steps:

[0060] Install anchor rod one and anchor rod two in the porous geotechnical media to be anchored. Both anchor rod one and anchor rod two have multiple small pores that are permeable to water and air;

[0061] Diffusing CO into the geotechnical medium using an anchor rod 2 , and at least part of the CO 2 dissolves in the water in the geotechnical medium and forms CO 3 2- ;

[0062] And diffusing a solution containing Ca 2+ into the geotechnical medium using the first anchor rod or the second anchor rod; wherein, in the case of using the second anchor rod, the second anchor rod is adjacent to the first anchor rod;

[0063] CO 3 2- and Ca 2+ combine to form CaCO 3 particles and the amount of particles increases, forming a calcium-cemented reinforcement layer in the geotechnical medium around the anchor rod.

[0064] It should be noted that in this embodiment, the water in the geotechnical medium can be artificially added water or the water contained in the porous geotechnical medium itself.

[0065] Embodiment 2

[0066] This embodiment provides a green carbon sequestration and efficiency-enhancing geotechnical anchoring device, which is a non-electrode pressure type green carbon sequestration and efficiency-enhancing geotechnical anchoring device. As shown in the reference Figure 1 , the device includes an anchor rod A1. The rod body of the anchor rod A1 is made of porous basalt fiber reinforced polymer BFRP, so that the anchor rod A1 has the characteristic of capillary water absorption; a gas guide pipe A1-1 is arranged inside the anchor rod A1. The inlet end of the gas guide pipe A1-1 is exposed at the left end of the anchor rod A1, and air outlet holes are opened at the right end of the gas guide pipe A1-1, so that the gas guide pipe A1-1 can be used to press the gas with a relatively high carbon dioxide concentration captured from the outside into the interior of the anchor rod A1.

[0067] In this embodiment, an immersion liquid box A1-2 is also butted at the left end of the anchor rod A1. The immersion liquid box A1-2 is made of a water-impermeable material. The solution in the immersion liquid box A1-2 can diffuse to the right end of the anchor rod A1 under the action of the capillary water absorption characteristic of the rod body of the anchor rod, and at the same time diffuse to the outside of the anchor rod A1; the immersion liquid box A1-2 is also provided with an inlet for inputting a calcium ion solution.

[0068] In this embodiment, as shown in the reference Figure 3 (the blue arrow in the figure is the flow direction of CO 2 ), the gas guide pipe A1-1 is used to introduce CO 2 gas into the interior of the anchor rod. When the CO 2 gas is released into the interior of the anchor rod A1, it will move along the cavity (i.e., Figure 1 shown by the horizontal dotted line in) arranged horizontally inside the anchor rod A1 to the left end of the anchor rod A1, and at the same time diffuse to the outside of the anchor rod A1, and part of the CO2 Forms CO when encountering water 3 2- Refer to Figure 2 (The red arrow in the figure indicates the infiltration direction of the calcium ion solution), the immersion liquid box A1-2 is used to input the calcium ion solution into the anchor rod A1 inside its rod body; Ca 2+ and CO 3 2- Meet and form CaCO during the process of diffusing into the pores of the soil or rock mass around the outside of the anchor rod A1 3 Particles. As the amount of particles increases, deposition and cementation form a calcium cemented reinforcement layer in the surrounding rock and soil mass of the anchor rod, thereby playing a role in strengthening the relevant engineering structure.

[0069] To avoid blockage of the air outlet and at the same time increase the air outlet area, refer to Figure 1 As shown, in this embodiment, a hemispherical cavity A1-6 is provided on the right side of the cavity. The hemispherical cavity A1-6 covers the right side of the air guide pipe A1-1, and the gas discharged from the air outlet can change its flow direction after being blocked by the hemispherical cavity A1-6.

[0070] Furthermore, in this solution, the right end of the anchor rod A1 is connected with an anchoring section A1-3, and a tray A1-4 is adhesively bonded to the outside of the left end of the anchor rod A1. The tray A1-4 is located on the right side of the immersion liquid box A1-2 and is used to cooperate with the nut to generate an initial anchoring force.

[0071] In order to enable the anchor rod made of basalt fiber polymer material to be reliably connected to other load-bearing components, circumferential concave and convex patterns are made on the outside of all or relevant parts of the rod body. Refer to Figure 1 As shown, in this embodiment, concave and convex patterns are provided on the outside of the left part of the rod body and the anchoring section A1-3. When connecting with other components, through a solidifying adhesive material (epoxy resin type), other components are adhesively bonded to the rod body by extrusion. Such as Figure 1 The tray A1-4 in, it extrudes and fixes the adhesive A1-7 (solidifying adhesive material) at the concave and convex pattern part of the anchor rod to achieve reliable bonding. In addition, in this embodiment, the anchoring section A1-3 can also be fixed in the rock and soil medium by a similar method.

[0072] In this embodiment, on the left part of the anchor rod A1, an exhaust gas discharge port A1-5 is opened on the left side of the tray A1-4. The exhaust gas discharge port A1-5 is communicated with the cavity, so that the CO that is not dissolved in water inside the anchor rod A1 2 Gas and other gases overflow through the exhaust gas discharge port A1-5.

[0073] In this embodiment, the anchor rod can play a role in strengthening the relevant engineering structure, and at the same time, by capturing and fixing the CO in the air 2 , play a role in carbon sequestration benefit.

[0074] Embodiment 3

[0075] This embodiment provides a green carbon sequestration and efficiency-enhancing geotechnical anchoring device, which is based on Embodiment 1 and is additionally provided with a carbon capture device and a Ca 2+ ion solution supply device. Specifically:

[0076] Carbon capture device:

[0077] As Figure 11 shown, the carbon capture device includes a cylinder 7, a piston 7-1 disposed within the cylinder, and an air inlet 7-2 and an exhaust port 7-3 disposed on one side of the cylinder 7. The exhaust port 7-3 is communicated with the top of the gas pipe 5. The air inlet 7-2 and the exhaust port 7-3 are respectively provided with a CO 2 semi-permeable membrane 6; through the reciprocating motion of the piston 7-1, the cylinder 7 can suck in air from the air inlet 7-2 and press the sucked gas into the gas supply pipe from the exhaust port 7-3. Combining with the filtering effect of the CO 2 semi-permeable membrane 6, high-concentration CO 2 can be input into the gas supply pipe; the gas supply pipe is communicated with the inlet end of the guide pipe A1-1 to input gas containing high-concentration CO 2 into the anchor rod A.

[0078] Under the action of external reciprocating mechanical power, this carbon capture device can suck in air from the air and press out air by using the reciprocating motion of the piston within the cylinder. The power source of this device can adopt any suitable green energy.

[0079] Ca 2+ ion solution supply device:

[0080] Ca 2+ ions (other high-valent cations with similar functions can also be used in this solution, such as Fe3+ ions, to form ferric cementation) are mainly used for carbon sequestration. In order to provide sufficient Ca 2+ ion solution to the anchoring device, it is necessary to transport it into the anchoring device through a conduit; specifically, referring to Figure 12 、 Figure 13 shown, a calcium ion slow-release agent (the calcium ion slow-release agent is formed by mixing slaked lime and water) is placed in the water tank 5. The calcium ion slow-release agent slowly releases Ca 2+ ions, and then transports them into the immersion box A1-2 of the anchor rod A through a conduit. In addition, in some cohesive soils, Ca 2+ ions have the function of improving the properties of the soil and have the additional function of improving the engineering properties of the soil.

[0081] Embodiment 4

[0082] This embodiment provides a green carbon sequestration and efficiency-enhancing geotechnical anchoring method, which is only different from that of Embodiment 1 in that: positive and negative electrodes are respectively arranged in Anchor Bolt 1 and Anchor Bolt 2 to drive the relative movement of carbonate ions and calcium ions, and the carbonate ions combine with calcium ions to form CaCO 3 particles. As the amount of particles increases, deposition and cementation form a calcareous cemented reinforcement layer in the surrounding rock and soil mass of the anchor bolt, thereby playing a role in reinforcing the relevant engineering structure.

[0083] Embodiment 5

[0084] This embodiment provides a green carbon sequestration and efficiency-enhancing geotechnical anchoring device, which is an electrode-integrated green carbon sequestration and efficiency-enhancing geotechnical anchoring device. In the electrode-integrated green carbon sequestration and efficiency-enhancing geotechnical anchoring device, Ca 2+ ion solution and CO 3 2- ion solution are released into the rock and soil pores at different parts of the same anchor bolt, and under the drive of the electric field, the two ions move towards each other, thereby forming a calcareous cemented reinforcement effect.

[0085] Specifically, in this embodiment, as Figure 4 shown, the green carbon sequestration and efficiency-enhancing geotechnical anchoring device includes Anchor Bolt B2. The rod body of Anchor Bolt B2 is divided into two parts, an outer section anchor bolt rod body 2-8 and an inner section anchor bolt rod body 2-9, under the isolation of the insulator B2-12 in the middle. The outer section anchor bolt rod body 2-8 is a CO 3 2- ion release area driven by a negative electrode, and the inner section anchor bolt rod body 2-9 is a Ca 2+ ion release area driven by a positive electrode.

[0086] For the convenience of ion diffusion, in this embodiment, both the outer section anchor bolt rod body 2-8 and the inner section anchor bolt rod body 2-9 are made of porous basalt fiber reinforced polymer BFRP, so that both the outer section anchor bolt rod body 2-8 and the inner section anchor bolt rod body 2-9 have capillary water absorption characteristics.

[0087] Specifically, in this embodiment, referring to Figure 5 (the dark blue arrow in the figure is the conveying direction of CO 2 ) shown, the structure of the outer section anchor bolt rod body 2-8 is basically the same as that of the non-electrode pressure type in Embodiment 1. The difference is that the air duct B2-1 in the outer section anchor bolt rod body 2-8, in addition to playing the role of conveying gas with a higher carbon dioxide concentration, is made of a conductive material to play the role of a negative electrode, and thus plays the role of a negative electrode-driven CO 3 2-The role of ion diffusion; the insulator B2-12 not only acts as insulation, but also is impermeable to water and air. Its material is also BFRP. The insulator B2-12 is connected to the outer section of the anchor rod body 2-8 and the inner section of the anchor rod body 2-9 to bear the tensile force.

[0088] Further, in this solution, an air guide pipe B2-1 is provided inside the outer section of the anchor rod body 2-8. An air outlet is provided at the right end of the air guide pipe B2-1, and the air guide pipe B2-1 is connected to an external power supply to form a negative electrode; a cavity is also horizontally opened inside the outer section of the anchor rod body 2-8. The main body of the air guide pipe B2-1 is arranged in the cavity and an exhaust channel is formed between the main body and the inner wall of the cavity (i.e., Figure 4 the horizontal dotted line in the figure); at the left part of the outer section of the anchor rod body 2-8, a plurality of waste gas discharge ports B2-5 are opened on the left side of the tray. The waste gas discharge ports B2-5 are connected to the left end of the exhaust channel so that the excess gas can be discharged to the outside of the rod body through the waste gas discharge ports B2-5.

[0089] In this embodiment, the left end of the outer section of the anchor rod body 2-8 is butt-connected to the immersion liquid box B2-2. The solution in the immersion liquid box B2-2 can diffuse to the right end of the outer section of the anchor rod body 2-8 under the action of the capillary water absorption characteristic of the anchor rod body, and at the same time diffuse to the outside of the outer section of the anchor rod body 2-8; referring to Figure 5 (the light blue arrow in the figure is the water infiltration direction), the immersion liquid box B2-2 is provided with an inlet. Water can be input into the immersion liquid box B2-2 through the inlet. The water diffuses into the outer section of the anchor rod body 2-8, and then the water can diffuse to the porous rock and soil medium around the anchor rod B body.

[0090] Further, in this solution, referring to Figure 6 (the red arrow in the figure is the conveying direction of the calcium ion solution), an immersion liquid cavity B2-7 is opened inside the inner section of the anchor rod body 2-9; a liquid guide pipe B2-13 is also provided inside the rod body of the anchor rod B. One end of the liquid guide pipe B2-13 is communicated with the immersion liquid cavity B2-7 to convey the calcium ion solution to the inner section of the anchor rod body 2-9 (the conduit conveys the calcium ion solution into the immersion liquid cavity B2-7, and the capillary action makes the pores in the outer section of the anchor rod body 2-8 filled with calcium ions and gradually diffuse to the outside of the anchor rod B).

[0091] In this embodiment, the liquid guide pipe B2-13 is insulated and a positive electrode wire is provided inside it. A positive electrode B2-10 is provided on the right side of the immersion liquid cavity B2-7. The positive electrode B2-10 is connected to one end of the positive electrode wire, and the other end of the positive electrode wire is led out of the anchor rod B from the inside of the liquid guide pipe B2-13 and connected to an external power supply.

[0092] In this embodiment, under the electric field action of the negative electrode in the outer section of the anchor rod and the positive electrode in the inner section of the anchor rod, CO 3 2- ions and Ca 2+ ions are pushed into the rock and soil medium, and CO3 2- Ions migrate towards the positive electrode, and Ca 2+ ions migrate towards the negative electrode. The two meet in the geotechnical medium to form insoluble CaCO 3 particles. As the range of sedimentary cementation increases, a calcareous cemented reinforcement zone is formed in the surrounding geotechnical mass of anchor rod B, which, together with anchor rod B, plays a role in reinforcing the relevant engineering structure. At the same time, this implementation can also capture and fix CO 2 in the air to achieve the carbon sequestration benefit.

[0093] Furthermore, in this solution, the right end of the inner-section anchor rod body 2-9 is connected to the anchorage section B2-3, and the outer section of the left end of the outer-section anchor rod body 2-8 is bonded with a tray B2-4, and the tray B2-4 is located on the right side of the immersion box B2-2; both the left part of the outer-section anchor rod body 2-8 and the outside of the anchorage section B2-3 are provided with concave and convex patterns. When connecting with other components, through a solidifying adhesive material (epoxy resin type), other components are adhesively bonded to the rod body by extrusion. For example Figure 4 in, the tray B2-4 is fixed at the concave and convex patterns on the outer-section anchor rod body 2-8 through the fixing glue B2-11 (solidifying adhesive material).

[0094] In this embodiment, referring to Figure 3 as shown, a hemispherical cavity B2-6 is also provided on the right side of the cavity. The hemispherical cavity B2-6 covers the right side of the air duct B2-1, and the gas discharged from the air outlet can change its flow direction after being blocked by the hemispherical cavity B2-6; it can prevent the air outlet from being blocked and at the same time increase the air outlet area.

[0095] In this embodiment, the air duct B2-1 is used to press the gas captured from the outside with a relatively high carbon dioxide concentration into the air outlet inside the anchor rod. When the gas is released into the inside of the anchor rod, it will move towards the outer end of the anchor rod along the small pores reserved in the anchor rod. Part of the carbon dioxide will dissolve into the water in the pores, and part will overflow through the waste gas discharge port B2-5 together with other gases. At the same time, the outer end rod head of the anchor rod is immersed in the immersion box B2-2, and the immersion box B2-2 contains a calcium ion solution at this time. Since the anchor rod body is a multi-porous medium with capillary characteristics, the liquid will diffuse into the inside of the anchor rod, thereby migrating Ca 2+ ; the calcium ion solution in the pores of the rod body diffuses into the pores of the soil or rock mass around the outside of the anchor rod under the action of the internal gas pressure, and at the same time reacts with the CO 3 2- ions dissolved in the liquid to form CaCO 3 particles. As the amount of particles increases and the sedimentary cementation increases, a calcareous cemented reinforcement layer is formed in the surrounding geotechnical mass of the anchor rod, which, together with the anchor rod, plays a role in reinforcing the relevant engineering structure.

[0096] Example 6

[0097] This embodiment provides a green carbon sequestration and efficiency-enhancing geotechnical anchoring device, which is an electrode-independent green carbon sequestration and efficiency-enhancing geotechnical anchoring device. In this electrode-independent green carbon sequestration and efficiency-enhancing geotechnical anchoring device, the injection of Ca 2+ ion solution and the positive electrode are in an independent anchor rod structure, while the injection of CO 3 2- ion solution and the negative electrode are in another independent anchor rod structure. Driven by the electric field, the two kinds of ions move towards each other, and then a calcareous cementation reinforcement effect is formed.

[0098] Refer to Figure 7 、 Figure 8 (The dark blue arrow in the figure is the conveying direction of CO 2 ). As shown, the rod body structure of the anchor rod C3 where the negative electrode is located is basically the same as that of the non-electrode pressure type described in Embodiment 2. The difference is that the air duct C3-1 in the rod body not only plays the role of conveying gas with a higher carbon dioxide concentration, but also uses a conductive material to play the role of the negative electrode. The outer end of the rod is also in the liquid immersion box C3-2. The difference is that the liquid in the liquid immersion box C3-2 is water, not calcium ion solution.

[0099] Refer to Figure 9 、 Figure 10 (The red arrow in the figure is the infiltration direction of the calcium ion solution). As shown, a positive electrode is provided inside the rod body of the anchor rod D4 where the positive electrode is located. The outer end of the anchor rod is located in the liquid immersion box D4-2, and the liquid in the liquid immersion box D4-2 is calcium ion solution. The rod body where the positive electrode is located is also made of porous BFRP material with capillary action. In the geotechnical medium, the positive electrode anchor rod (anchor rod D4) and the negative electrode anchor rod (anchor rod C3) are arranged as needed in space. Therefore, under the action of the positive and negative electric fields, CO 3 2- and Ca 2+ are pushed into the geotechnical medium, and CO 3 2- ions migrate towards the positive electrode, and Ca 2+ migrates towards the negative electrode. The two meet in the geotechnical medium to form insoluble CaCO 3 particles. As the deposition cementation range increases, a calcareous cementation reinforcement zone is formed in the geotechnical body around the anchor rod, which together with the anchor rod plays a role in reinforcing the relevant engineering structure. At the same time, by capturing and fixing the CO 2 in the air, the carbon sequestration benefit is achieved.

[0100] Specifically, in this embodiment, an electrode-independent green carbon sequestration and efficiency-enhancing geotechnical anchoring device includes an anchor rod C3 and an anchor rod D4, and the anchor rod C3 and the anchor rod D4 are adjacent anchor rods; the rod bodies of the anchor rod C3 and the anchor rod D4 are both made of porous basalt fiber-reinforced polymer BFRP, so that the rod bodies of the anchor rods all have capillary water absorption characteristics.

[0101] Meanwhile, referring to Figure 8 and Figure 9 as shown, in this embodiment, the left ends of the shanks of anchor bolts C3 and D4 are respectively butted against immersion boxes C3-2 and D4-2. The immersion boxes C3-2 and D4-2 are respectively provided with an inlet to facilitate the corresponding input of water ( Figure 8 the light blue arrow in which indicates the infiltration direction of water) and calcium ion solution into the anchor bolts C3 and D4 respectively.

[0102] Furthermore, in this embodiment, an air guide pipe C3-1 is inserted into the left side of the immersion box C3-2 from the right. The right end of the air guide pipe C3-1 is provided with an air outlet to input CO 2 gas into the anchor bolt C3. The air guide pipe C3-1 is made of a conductive material and is connected to an external power source to form a negative electrode. A positive electrode D4-1 is inserted into the left side of the immersion box D4-2 from the right, and the positive electrode D4-1 is connected to the external power source.

[0103] Furthermore, in this solution, the right ends of the anchor bolts C3 and D4 are respectively connected with an anchoring section, and a tray is respectively bonded to the outer part of the left end, and the tray is located on the right side of the immersion box C3-2 or D4-2 to be used for cooperating with the nut to generate an initial anchoring force.

[0104] In this embodiment, a cavity is also horizontally opened inside the shank of the anchor bolt C3 (i.e., Figure 7 as shown by the horizontal dotted line in Figure 4 ). The main body of the air guide pipe C3-1 is arranged in the cavity and an exhaust channel is formed between the air guide pipe C3-1 and the inner wall of the cavity (i.e., Figure 8 as shown by the horizontal dotted line in Figure 4 ). At the left part of the anchor bolt C3, a plurality of waste gas discharge ports C3-5 are opened on the left side of the tray. The waste gas discharge ports C3-5 are communicated with the left end of the exhaust channel so that the excess gas can be discharged to the outside of the rod body through the waste gas discharge ports C3-5. In this embodiment, referring to Figure 8 as shown, a hemispherical cavity C3-6 is also provided on the right side of the cavity. The hemispherical cavity C3-6 covers the right side of the air guide pipe C3-1, and the gas discharged from the air outlet can change the flow direction after being blocked by the hemispherical cavity C3-6; it can avoid the blockage of the air outlet and at the same time increase the air outlet area.

[0105] In this embodiment, uneven patterns are provided on the outer parts of the left portions of the shanks of the anchor bolts C3 and D4 and the corresponding anchoring sections. When connecting with other components, other components are adhesively bonded to the shank by a solidifying adhesive material (epoxy resin type). As Figure 7 and Figure 8 described, the two trays are respectively adhesively bonded to the uneven pattern parts of the shank by a solidifying adhesive material (epoxy resin type).

[0106] Embodiment 7

[0107] This embodiment provides a green carbon sequestration and efficiency-enhancing geotechnical anchoring device, which adds a carbon capture device, a Ca 2+ ion solution supply device and an electrode energy source device on the basis of Embodiment 5 or 6 to achieve the effect of green carbon sequestration and soil reinforcement.

[0108] Among them, the carbon capture device and the Ca 2+ ion solution supply device are the same as the carbon capture device and the Ca 2+ ion solution supply device described in Embodiment 3. The carbon capture device is connected to the gas guide pipe B2-1 of the anchor rod B2 or the gas guide pipe C3-1 of the anchor rod C3; the Ca 2+ ion solution supply device is correspondingly connected to the liquid guide pipe B2-13 or the liquid immersion box D4-2; the electrode energy source device can preferably be a solar cell to provide an energy source for the electrode as an external power supply.

[0109] It should be noted that the porous basalt fiber reinforced polymer BFRP and the BFRP used to prepare the insulator adopted in the present invention are all known existing materials, and will not be elaborated in detail in the present invention. In addition, in addition to using the porous basalt fiber reinforced polymer BFRP material for the anchor rod body, porous carbon fiber reinforced infiltration materials and porous glass fiber reinforced infiltration materials can also be used, which are all existing mature materials.

[0110] Although the present invention has been described above in conjunction with exemplary embodiments and the accompanying drawings, those of ordinary skill in the art should understand that various modifications can be made to the above embodiments without departing from the spirit and scope of the claims.

Claims

1. A green carbon fixation and efficiency-enhancing rock and soil anchoring device, characterized in that: The anchor rod A comprises an anchor rod A, wherein the anchor rod body of the anchor rod A has a plurality of water-permeable and air-permeable fine pores and has a capillary water absorption property; The left end of the anchor rod A is connected to an immersion box, and the solution in the immersion box can diffuse toward the right end of the anchor rod A and diffuse toward the outside of the anchor rod A under the action of the capillary water absorption characteristics of the anchor rod body; The immersion box is provided with an inlet for inputting a solution containing calcium ions; Along the length direction of the anchor rod A, an air guide tube is inserted from the left end of the immersion box. The right end of the air guide tube is located inside the anchor rod A and is provided with an air outlet to facilitate the input of CO2 gas into the anchor rod A.

2. A green carbon fixation and efficiency-enhancing rock and soil anchoring device according to claim 1, characterized in that: The anchor rod A has an anchor rod body made of porous basalt fiber reinforced polymer BFRP, or porous carbon fiber reinforced impregnated material, or porous glass fiber reinforced impregnated material, so that the anchor rod A has capillary water absorption characteristics.

3. A green carbon fixation and efficiency-enhancing rock and soil anchoring device according to claim 1, characterized in that: The anchor rod A has an anchoring section connected to its right end, and a tray is provided outside its left end, and the tray is located on the right side of the immersion box; The anchor rod A has concave-convex patterns on the left part of the anchor rod body and the outside of the anchoring section; After the installation is completed, the tray is bonded to the concave and convex grooves on the left side of the anchor rod body by fixing glue, and the anchoring section is fixed in the rock and soil medium by fixing glue.

4. A green carbon fixation and efficiency-enhancing rock and soil anchoring device according to claim 1, characterized in that: A cavity is transversely opened inside the anchor rod A, and the air guide tube body is arranged in the cavity and forms an exhaust channel between the air guide tube body and the inner wall of the cavity; The left part of the anchor rod A is provided with a plurality of exhaust gas discharge ports on the left side of the tray, and the exhaust gas discharge ports are connected with the left end of the exhaust channel so that the excess gas can be discharged to the outside of the rod body through the exhaust gas discharge ports.

5. A green carbon fixation and efficiency-enhancing rock and soil anchoring device, characterized in that: Including anchor rod B; The anchor rod B comprises an anchor rod body, and an insulator is provided in the middle of the anchor rod body to separate the anchor rod body into an outer anchor rod body and an inner anchor rod body; The insulator is insulating and impermeable to water and air; The outer anchor rod body and the inner anchor rod body both have capillary water absorption properties; The left end of the outer anchor rod body is connected to an immersion box, and the liquid in the immersion box can diffuse toward the right end of the outer anchor rod body under the action of the capillary water absorption property of the outer anchor rod body, and diffuse toward the outside of the outer anchor rod body at the same time; The immersion box is provided with an inlet for inputting water; Along the length direction of the outer anchor rod body, an air guide tube is inserted from the left end of the immersion box, and the right end of the air guide tube is located inside the outer anchor rod body and is provided with an air outlet hole to facilitate the input of CO2 gas into the outer anchor rod body; An immersion chamber is provided on the left side inside the inner anchor rod body, and the immersion chamber is connected to one end of a liquid conduit, and the other end of the liquid conduit leads out of the anchor rod B from the left end of the outer anchor rod body to introduce a calcium ion solution into the immersion chamber. The calcium ion solution can diffuse toward the right end of the inner anchor rod body under the action of the capillary water absorption characteristics of the inner anchor rod body, and at the same time diffuse toward the outside of the inner anchor rod body.

6. A green carbon fixation and efficiency-enhancing rock and soil anchoring device according to claim 5, characterized in that: A positive electrode is provided on the right side of the immersion chamber, and the positive electrode is connected to one end of a positive electrode wire, and the other end of the positive electrode wire is connected to an external power source after being led out of the anchor rod B from the inside of the liquid conduit; The gas guide tube is a conductive material and is connected to an external power source to form a negative electrode.

7. A green carbon fixation and efficiency-enhancing rock and soil anchoring device, characterized in that: It includes an anchor rod C and an anchor rod D, and the anchor rod C and the anchor rod D are adjacent anchor rods; The anchor rods C and D both have capillary water absorption properties; The left ends of the anchor rods of the anchor rods C and D are respectively connected to the immersion boxes C and D; The liquid in the immersion box C can diffuse toward the right end of the anchor rod C and diffuse toward the outside of the anchor rod C under the action of the capillary water absorption characteristic, while the liquid in the immersion box D can diffuse toward the right end of the anchor rod D and diffuse toward the outside of the anchor rod D under the action of the capillary water absorption characteristic; The immersion box C and the immersion box D are respectively provided with an inlet, so as to input water and a calcium ion solution into the anchor rod C and the anchor rod D respectively; Along the length direction of the anchor rod C, an air guide tube is inserted from the left end of the immersion box C. The right end of the air guide tube is located inside the anchor rod C and is provided with an air outlet to facilitate the input of CO2 gas into the anchor rod C.

8. A green carbon fixation and efficiency-enhancing rock and soil anchoring device according to claim 7, characterized in that: A positive electrode is inserted into the anchor rod D from the left side to the right side of the immersion box D along the length direction of the anchor rod D; The gas guide tube is a conductive material and is connected to an external power source to form a negative electrode.

9. A green carbon fixation and efficiency-enhancing rock and soil anchoring method for anchoring rock and soil media, characterized in that: The following steps are involved: The anchor rod diffuses CO2 into the rock and soil medium, and at least part of the CO2 dissolves in the water in the rock and soil medium and forms CO3 2- ; And use anchor rod one or anchor rod two to diffuse Ca-containing 2+ A solution; wherein, when anchor rod 2 is used, anchor rod 2 is adjacent to anchor rod 1; CO3 2- and Ca 2+ The combined CaCO3 particles increase in amount and form a calcium cemented reinforcement layer in the rock and soil medium around the anchor.

10. A green carbon fixation and efficiency-enhancing rock and soil anchoring method according to claim 9, characterized in that: The anchor rod bodies of the anchor rod one and the anchor rod two both have a plurality of tiny pores that are water-permeable and air-permeable, and have capillary water absorption properties.

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