Tunnel gushing water treatment method based on magnetism-vibration synergistic anchoring

Abstract

The invention provides a magnetic-vibration synergistic anchoring tunnel water inrush treatment method, which comprises the following steps of: comprehensively probing by adopting a geological radar and a borehole camera, determining parameters of a leakage channel, and measuring and calculating water inflow; processing the film bag in a customized manner based on the digital model, and prefabricating an electromagnetic rod assembly; the assembly body is accurately installed at the position of the water outlet; a power supply is switched on to start an electromagnetic rod to generate a magnetic field and vibration; the magnetic field intensity is adjusted through a control box to match water flow conditions; water-borne epoxy resin-water glass magnetic slurry is injected, and efficient filling is achieved through magnetic field adsorption enrichment and vibration permeation; parameters are dynamically adjusted according to vibration feedback, and the slurry is promoted to form a core-shell-shaped high-strength water plugging structure under the constraint of the membrane bag. The method has the advantages that the magnetic-vibration synergistic effect solves the problem that slurry is easy to lose in a flowing water environment, and in-situ rapid enrichment and solidification are realized; and the customized film bag design and the high-strength composite material guarantee the extreme fitting and long-term stability of the plugging body and the channel wall.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel and underground engineering construction, in particular to a tunnel gushing water treatment method based on magnetic-vibration synergistic anchoring. BACKGROUND

[0002] With the improvement of China's transportation network and the development of water resources in the west, tunnels and underground projects gradually extend to the southwest region with complex geological conditions, showing the characteristics of long tunnel line, large burial depth, high ground stress and high water pressure. Influenced by complex geological structure and construction factors, tunnel gushing water accidents occur frequently, which seriously threatens personnel safety, damages equipment, and causes environmental disasters such as tunnel flooding, surface subsidence and groundwater depletion. At present, the treatment of high-pressure and high-flow gushing water often uses diversion or grouting methods. Diversion can reduce the water inflow of the working face, but it has problems such as long construction period, high cost and high safety risk. Grouting treatment often needs to drill a hole for grouting or close and depressurize the gushing point first, which is complex and the effect is limited. SUMMARY

[0003] The present application provides a tunnel gushing water treatment method based on magnetic-vibration synergistic anchoring, which solves the problem of easy loss of slurry in moving water environment and realizes in-situ rapid enrichment and solidification. The customized membrane bag design and high-strength composite material ensure the perfect fit and long-term stability of the plugging body and the passage wall. The dual-liquid rapid-setting system realizes minute-level phase change and effectively resists high-speed water flow erosion. The intelligent control system realizes precise matching and dynamic optimization of magnetic field strength through vibration feedback, improving construction reliability and adaptability.

[0004] In order to realize the above technical features, the purpose of the present application is realized as follows: a tunnel gushing water treatment method based on magnetic-vibration synergistic anchoring, comprising the following steps: Step 1: Use geological radar and borehole camera to comprehensively explore the trend, scale and hydraulic connection of the leakage passage, calculate the maximum water inflow and water flow velocity; Step 2: Based on the digital model of the leakage passage, make and process the membrane bag, and precast the anchor rod assembly with the built-in electromagnetic rod; Step 3: Drill anchor rod holes in the gushing area, and accurately install the electromagnetic rod assembly wrapped with the membrane bag to the water outlet position of the leakage passage; Step 4: Connect the power supply and start the electromagnetic rod to generate a magnetic field and mechanical vibration; adjust the current through the knob of the control box to preliminarily set the magnetic field strength to match the water inflow velocity; Step 5, connect the double-liquid grouting system, inject the magnetic slurry into the channel through the three-way pipe with a stop valve, and the magnetic slurry is adsorbed and enriched when it flows into the magnetic field range, and it penetrates and fills efficiently under the action of vibration; Step 6, dynamically and finely adjust the magnetic field strength according to the vibration feedback signal, promote the slurry to solidify in situ under the constraint of the membrane bag, and form a core-shell high-strength water plugging structure; Step 7, after the grouting body is cured to the standard, the operation is terminated, and the local leakage points after excavation are treated by supplementary grouting.

[0005] Preferably, an electromagnetic rod for generating a magnetic field is preset at the water outlet of the water gushing channel, the injected magnetic slurry is strongly adsorbed and in-situ enriched and solidified when it flows into the field range, forming a core-shell water plugging structure with the water outlet as the anchor point.

[0006] Preferably, the electromagnetic rod generates a magnetic field and mechanical vibration simultaneously after being energized, through the magnetic-vibration synergistic effect, the magnetic field is used for anchoring and adsorbing the magnetic slurry, the vibration is used for removing bubbles in the borehole, disturbing the slurry to enhance its fluidity and permeability, and preventing the slurry from prematurely clogging on the surface of the electromagnetic rod, realizing the densification and high strength of the water plugging structure.

[0007] Preferably, the membrane bag is made of high-performance flexible composite material, and the membrane bag is customized designed according to the digital scanning model of the leakage channel; the membrane bag can produce self-adaptive deformation to fit and cover the wall surface of the irregular leakage channel, and use its high-strength characteristics to constrain the slurry mass to mainly expand in the direction of the channel wall.

[0008] Preferably, the magnetic slurry is prepared by mixing water-based epoxy resin magnetic slurry and water glass in a ratio of 1:1 in the double-liquid grouting system, and has the characteristics of being attracted by the magnetic field. At the same time, by using the rapid gelation and solidification characteristics of the water-based epoxy resin-water glass system, the magnetic slurry realizes rapid phase change within minutes after being enriched by the magnetic field, so as to complete the water locking before the high-speed water flow disperses the slurry.

[0009] Preferably, the resistance regulator built-in the control box is used for stepless adjustment of the current output to the electromagnetic rod, so as to realize precise closed-loop control of the magnetic field strength; the operator dynamically adjusts the magnetic field force according to the feedback of the vibration prompt module and the estimated water gushing amount, to match the best adsorption force requirement of the magnetic slurry under different flow rates of water flow, and realizes precise injection.

[0010] Preferably, the power supply adopts an alternating current power supply to provide stable and easily adjustable power frequency current for the electromagnetic rod; the vibration prompt module is arranged in parallel with the power supply, thereby ensuring that the signal collection of the vibration prompt module is not disturbed by the sharp fluctuation of the main loop current, and can independently and stably reflect the real working state of the electromagnetic rod.

[0011] Preferably, the grout stop valve is directly installed at the inlet of the tee pipe to form an integrated grouting interface, so that the magnetic grout can only flow into the leakage channel in one direction under the action of pump pressure, so as to prevent the high-pressure water and sand mixture from backflowing and blocking the grouting pipeline when the pump stops or the pressure fluctuates.

[0012] Preferably, the rotary control box is connected to the electromagnet via a wire, and the current output to the electromagnet can be adjusted steplessly and continuously via a rotary resistor regulator on the rotary control box.

[0013] Preferably, a circular plate for controlling the flow of magnetic slurry is rotatably mounted inside the slurry stop valve via a shaft.

[0014] The present invention has the following beneficial effects: 1. This invention generates a high-intensity active magnetic field by pre-setting an electromagnetic rod at the outlet of the water inflow channel, which can strongly attract the injected magnetic grout, causing it to quickly accumulate and solidify in situ at the outlet, forming a core-shell water-blocking structure. This fundamentally solves the technical bottleneck of grout being easily washed away by high-speed water flow in traditional grouting processes.

[0015] 2. This invention utilizes the magnetic field and mechanical vibration generated simultaneously by the electromagnetic rod. The magnetic field enables directional adsorption and anchoring of the slurry, while the vibration effectively removes air bubbles from the borehole, enhances the permeability of the slurry, and prevents premature clogging on the surface of the electromagnetic rod, significantly improving the density, integrity, and anti-seepage stability of the water-blocking structure.

[0016] 3. The present invention uses a high-performance flexible membrane bag customized based on the digital model of the leakage channel, which can generate adaptive deformation to cover the irregular channel wall with extremely high fit, and utilize its high strength characteristics to constrain the expansion of the slurry solidified body mainly towards the channel wall, which significantly enhances the sealing body's ability to resist high-pressure water flow impact and its long-term durability.

[0017] 4. This invention uses a two-liquid system of water-based epoxy resin magnetic slurry and water glass mixed in a 1:1 ratio. It has both magnetic response characteristics and rapid gelation and solidification characteristics. It can achieve rapid phase change within minutes after magnetic field enrichment and complete solidification and water locking before the slurry is dispersed by high-speed water flow, which greatly improves the efficiency of sealing operation.

[0018] 5. This invention precisely controls the electromagnetic field strength through a built-in stepless resistance regulator in the control box. Operators can dynamically optimize the magnetic field parameters based on vibration feedback signals and water inflow conditions, achieving precise matching of the magnetic slurry adsorption force under different flow rates, significantly improving the adaptability, controllability, and sealing success rate of the construction process. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Fig. 1This is a schematic diagram of the structure and connection of the magnetic-vibration coordinated anchoring grouting device.

[0021] Fig. 2 This is a cross-sectional diagram of a system for controlling sudden water inrush in tunnels using magnetic-vibration synergistic anchoring.

[0022] Fig. 3 This is a schematic diagram of the slurry stop valve involved in the present invention.

[0023] In the diagram: 1. Leakage channel; 2. Membrane bag; 3. Electromagnetic rod; 4. Anchor bolt; 5. AC power supply; 6. Grout stop valve; 7. T-pipe; 8. Magnetic grout; 9. Control box; 10. Wire; 11. Shaft; 12. Circular plate; 13. Grouting machine. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1: See Figs. 1-3 A method for controlling tunnel water inrush using magnetic-vibration co-anchoring, comprising the following steps: 1) A combination of ground-penetrating radar and borehole video was used to investigate and determine the parameters of the seepage channels and calculate the water inflow. 2) Customized processing of membrane bags and prefabrication of electromagnetic rod assemblies based on digital models; 3) Precisely install the assembly at the water outlet position; 4) Turn on the power to start the electromagnetic rod to generate a magnetic field and vibration, and adjust the magnetic field strength through the control box to match the water flow conditions; 5) Inject water-based epoxy resin-water glass magnetic slurry to achieve efficient filling by using magnetic field adsorption enrichment and vibration penetration. 6) Based on the vibration feedback, the parameters are dynamically adjusted to promote the formation of a core-shell high-strength water-blocking structure of the slurry under the constraint of the membrane bag.

[0026] By adopting the specific treatment methods described above, the advantages are as follows: the magnetic-vibration synergistic effect solves the problem of easy slurry loss in dynamic water environment, and realizes in-situ rapid enrichment and solidification; the customized membrane bag design and high-strength composite materials ensure the ultimate fit and long-term stability of the sealing body and the channel wall; the dual-liquid rapid solidification system realizes phase change in minutes, effectively resisting the scouring of high-speed water flow; the intelligent control system realizes precise matching and dynamic optimization of magnetic field strength through vibration feedback, improving construction reliability and adaptability.

[0027] Example 2: like Figs. 1-3 As shown, a method for controlling tunnel water inrush using magnetic-vibration synergistic anchoring includes the following steps: Step 1: Using a combination of ground-penetrating radar and borehole camera to investigate and determine the direction, scale and hydraulic connection of seepage channel 1, and to calculate the maximum inflow and flow velocity; Step 2: Based on the digital model of the leakage channel 1, fabricate and process the membrane bag 2, and prefabricate the anchor rod 4 assembly with built-in electromagnetic rod 3; Step 3: Drill anchor holes in the water inrush area and precisely install the electromagnetic rod 3 assembly wrapped with membrane bag 2 to the water outlet of the leakage channel 1. Step 4: Connect the power supply 5 to start the electromagnetic rod 3 to generate a magnetic field and mechanical vibration; adjust the current through the knob on the control box 9 to initially set the magnetic field strength to match the water flow rate. Step 5: Connect the dual-liquid grouting system and inject magnetic grout 8 into the channel through the three-way pipe 7 with grout stop valve 6. When the magnetic grout 8 flows to the magnetic field domain, it is adsorbed and enriched, and under the action of vibration, it efficiently penetrates and fills the channel. Step 6: Dynamically and finely adjust the magnetic field strength based on the vibration feedback signal to promote in-situ solidification of the slurry under the constraint of the membrane bag 2, forming a core-shell high-strength water-blocking structure; Step 7: After the grouting body has been cured to the required standard, the operation is terminated, and after excavation is resumed, grouting is carried out to treat any local leakage points.

[0028] Furthermore, an electromagnetic rod 3 capable of generating an active magnetic field is pre-installed at the outlet of the water inflow channel. When the injected magnetic slurry 8 flows into the field, it is strongly adsorbed and enriched and solidified in situ, forming a core-shell-shaped water-blocking structure with the outlet as the anchor point. This overcomes the core problem that the slurry is easily washed away and cannot be effectively retained in a dynamic water environment.

[0029] Furthermore, the electromagnetic rod 3 generates both a magnetic field and mechanical vibration when energized. Through the synergistic effect of magneto-vibration, the magnetic field is responsible for anchoring and adsorbing the magnetic slurry 8, while the vibration is used to remove air bubbles in the borehole, disturb the slurry to enhance its fluidity and permeability, and prevent the slurry from clogging the surface of the electromagnetic rod 3 prematurely, thereby achieving the densification and high strength of the water-blocking structure.

[0030] Furthermore, the membrane bag 2 is made of high-performance flexible composite material, which can be customized according to the digital scanning model of the leakage channel 1. The membrane bag 2 can generate adaptive deformation to cover the wall of the irregular leakage channel 1 with extremely high fit, and use its high strength characteristics to constrain the slurry aggregate to expand mainly towards the channel wall, which significantly improves the water pressure impact resistance and long-term stability of the sealing body.

[0031] Furthermore, the magnetic slurry 8 is a mixture of waterborne epoxy resin magnetic slurry and water glass in a 1:1 ratio in a two-liquid grouting system. It not only has the characteristic of being attracted by a magnetic field, but also utilizes the rapid gelation and solidification characteristics of the waterborne epoxy resin-water glass system to achieve a rapid phase change within minutes after being enriched by the magnetic field, thereby completing solidification and water locking before the slurry is dispersed by high-speed water flow.

[0032] Furthermore, the built-in resistor regulator in the control box 9 is used to steplessly adjust the current output to the electromagnetic rod 3, thereby achieving precise closed-loop control of the magnetic field strength. Based on the feedback from the vibration prompt module and the estimated water flow, the operator dynamically adjusts the magnitude of the magnetic field force to match the optimal adsorption force requirements of the magnetic slurry 8 under different water flow rates, thus achieving intelligent and precise injection.

[0033] Furthermore, the power supply 5 adopts an AC power supply to provide a stable and easily adjustable power frequency current for the electromagnetic rod 3; the vibration prompting module is set in parallel with the power supply. This design ensures that the signal acquisition of the vibration prompting module is not affected by the drastic fluctuations in the main circuit current, and can independently and stably reflect the true working state of the electromagnetic rod 3, thereby improving the reliability and human-machine interaction of the entire system.

[0034] Furthermore, the grout stop valve 6 is directly installed at the inlet of the tee pipe 7, forming an integrated grouting interface. This design ensures that the grout can only flow into the leakage channel 1 in one direction under pump pressure, effectively preventing the backflow of high-pressure water-sand mixture and blockage of the grouting pipeline when the pump stops or pressure fluctuates, ensuring the continuity and safety of grouting operations, and is especially suitable for handling high-pressure, high-flow-rate water inrush emergencies.

[0035] Furthermore, the current output to the electromagnetic rod 3 can be continuously and steplessly adjusted by rotating the knob-type resistor regulator on the control box. This method allows operators to precisely control the magnetic field strength based on the perceived water flow rate and pressure on-site, thereby achieving accurate matching of the optimal adsorption force required under different working conditions and avoiding slurry loss due to an insufficiently weak magnetic field or premature clogging due to an excessively strong magnetic field.

[0036] Furthermore, a circular plate 12 for controlling the flow of magnetic grout 8 is rotatably mounted inside the grout stop valve 6 via a shaft 11. This specific structure of the grout stop valve 6 ensures that during grouting using the grouting machine 13, the grout can only flow out in one direction and will not flow back.

Claims

1. A method for controlling tunnel inrush water using magnetic-vibration synergistic anchoring, characterized in that, Includes the following steps: Step 1: Using a combination of ground-penetrating radar and borehole camera to investigate and determine the direction, scale and hydraulic connection of the seepage channel (1), and to calculate the maximum inflow and flow velocity; Step 2: Based on the digital model of the leakage channel (1), fabricate the processing membrane bag (2) and prefabricate the anchor rod (4) assembly with built-in electromagnetic rod (3); Step 3: Drill anchor holes in the water inrush area and precisely install the electromagnetic rod (3) assembly wrapped with membrane bag (2) to the outlet of the leakage channel (1); Step 4: Connect the power supply (5) and start the electromagnetic rod (3) to generate a magnetic field and mechanical vibration; adjust the current through the knob of the control box (9) to initially set the magnetic field strength to match the water flow rate; Step 5: Connect the dual-liquid grouting system and inject magnetic grout (8) into the channel through the three-way pipe (7) with the grout stop valve (6). When the magnetic grout (8) flows to the magnetic field domain, it is adsorbed and enriched, and efficiently penetrates and fills the channel under the action of vibration. Step 6: Dynamically and finely adjust the magnetic field strength based on the vibration feedback signal to promote the in-situ solidification of the slurry under the constraint of the membrane bag (2) and form a core-shell high-strength water-blocking structure; Step 7: After the grouting body has been cured to the required standard, the operation is terminated, and after excavation is resumed, grouting is carried out to treat any local leakage points.

2. The method for controlling tunnel inrush water using magnetic-vibration synergistic anchoring according to claim 1, characterized in that, An electromagnetic rod (3) for generating an active magnetic field is pre-set at the outlet of the water inflow channel. When the injected magnetic slurry (8) flows to the field, it is strongly adsorbed and enriched and solidified in situ, forming a core-shell water-blocking structure with the outlet as the anchor point.

3. The method for controlling tunnel inrush water using magnetic-vibration synergistic anchoring according to claim 1, characterized in that, When the electromagnetic rod (3) is energized, it generates both a magnetic field and mechanical vibration. Through the magnetic-vibration synergistic effect, the magnetic field is used to anchor and adsorb the magnetic slurry (8), while the vibration is used to remove air bubbles in the borehole, disturb the slurry to enhance its fluidity and permeability, and prevent the slurry from clogging the surface of the electromagnetic rod (3) prematurely, thereby achieving the densification and high strength of the water-blocking structure.

4. The method for controlling tunnel inrush water using magnetic-vibration synergistic anchoring according to claim 1, characterized in that, The membrane bag (2) is made of high-performance flexible composite material, and the membrane bag (2) is customized according to the digital scanning model of the leakage channel (1). The membrane bag (2) can generate adaptive deformation to fit and cover the wall of the irregular leakage channel (1), and use its high strength characteristics to constrain the slurry aggregate to expand mainly towards the channel wall.

5. The method for controlling tunnel inrush water using magnetic-vibration synergistic anchoring according to claim 1, characterized in that, The magnetic slurry (8) is prepared by mixing waterborne epoxy resin magnetic slurry and water glass in a 1:1 ratio in a two-liquid grouting system. It has the characteristic of being attracted by a magnetic field. At the same time, it utilizes the rapid gelation and solidification characteristics of the waterborne epoxy resin-water glass system to achieve a rapid phase change within minutes after being enriched by the magnetic field, thereby completing the solidification and water-locking before the slurry is dispersed by the high-speed water flow.

6. The method for controlling tunnel inrush water using magnetic-vibration synergistic anchoring according to claim 1, characterized in that, The built-in resistor regulator of the control box (9) is used to steplessly adjust the current output to the electromagnetic rod (3), thereby achieving precise closed-loop control of the magnetic field strength. The operator dynamically adjusts the magnetic field strength according to the feedback from the vibration prompt module and the estimated water flow, so as to match the optimal adsorption force requirements of the magnetic slurry (8) under different water flow rates and achieve precise injection.

7. The method for controlling tunnel inrush water using magnetic-vibration synergistic anchoring according to claim 1, characterized in that, The power supply (5) uses AC power to provide a stable and easily adjustable power frequency current for the electromagnetic rod (3); the vibration prompting module is set in parallel with the power supply, thereby ensuring that the signal acquisition of the vibration prompting module is not disturbed by the violent fluctuation of the main circuit current, and can independently and stably reflect the true working state of the electromagnetic rod (3).

8. The method for controlling tunnel water inrush using magnetic-vibration synergistic anchoring according to claim 1, characterized in that, The grout stop valve (6) is directly installed at the inlet of the three-way pipe (7) to form an integrated grouting interface, so that the magnetic grout (8) can only flow into the leakage channel (1) in one direction under the action of pump pressure, so as to prevent the high pressure water and sand mixture from backflowing and blocking the grouting pipeline when the pump stops or the pressure fluctuates.

9. The method for controlling tunnel water inrush using magnetic-vibration synergistic anchoring according to claim 1, characterized in that, The rotary control box (9) is connected to the electromagnetic rod (3) via a wire (10). The current output to the electromagnetic rod (3) can be adjusted steplessly and continuously via the rotary resistor regulator on the rotary control box (9).

10. The method for controlling tunnel inrush water using magnetic-vibration synergistic anchoring according to claim 1, characterized in that, The slurry stop valve (6) has a circular plate (12) inside which is rotatably mounted via a shaft (11) to control the flow of magnetic slurry (8).

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