Dry vibroflotation device and method with microbial grouting function

Abstract

The invention discloses a dry vibroflotation device and method with a microbial grouting function, and relates to the technical field of civil engineering foundation treatment. The dry vibroflotation device comprises a hanging head, a hanging rod, a shock absorber and a vibration excitation body which are sequentially connected from top to bottom; an air outlet is formed in the bottom end of the excitation body; a grouting nozzle is arranged on the outer side wall of the vibration excitation body; an air supply channel, a grouting channel and a cooling channel which are communicated with an external supply system are arranged in the hanging head, the hanging rod, the shock absorber and the shock excitation body; the air supply channel is communicated with the air outlet, the grouting channel is communicated with the grouting nozzle, and the cooling channel is an internal circulation channel and is attached to the grouting channel. Firstly, the ground is vibrated and impacted through vibration of the vibration excitation body and ejection of high-pressure air from the air outlet; and then when the vibration excitation body completely enters the ground, grouting is conducted through the grouting nozzle, and in the process, the grouting medium is controlled to be subjected to chemical reaction after being sprayed out by reducing the temperature. According to the device, the vibroflotation function and the grouting function are integrated, and collaborative operation of vibroflotation and grouting is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering foundation treatment, and more particularly to a dry vibro-impacting device and method with microbial grouting function. Background Art

[0002] Coral soil is mainly distributed in tropical waters and is widely used as a blowing filler for land reclamation and island building. Coral soil is a special rock medium formed by near-source sedimentation. Its particle characteristics are relatively complex, with wide gradation, rich internal pores and easy-to-break particles. Therefore, foundation treatment must be carried out when constructing infrastructure on coral soil sites.

[0003] The reinforcement mechanisms of foundation treatment mainly include compaction, drainage, solidification and replacement. Vibroflotation is a commonly used foundation treatment method for reinforcing fill foundations. It mainly relies on the vibration force provided by the vibrator to compact the soil, and backfill to compact the soil. Microbial grouting reinforcement technology is a new foundation reinforcement method in recent years. It injects microbial liquid and nutrients into the soil, diffuses the injected slurry between the pores of soil particles, and uses the mineralization of microorganisms and soil particles to quickly gel into calcium carbonate crystals, thereby enhancing the mechanical properties of the soil and improving the strength and stiffness of the soil.

[0004] Due to the high gravel content in coral soil, it is suitable for foundation reinforcement by vibration method. At the same time, gravel piles are formed during the vibration process, which can effectively improve its overall strength and anti-liquefaction ability. However, engineering practice shows that if the process control is not good during the filling process, it often causes uneven particle size and poor grading of the filling material. Vibration reinforcement still has the risk of uneven settlement, and the quality of the filling foundation is difficult to guarantee. On the other hand, microbial grouting reinforcement technology has the advantages of being green and environmentally friendly, fast repair speed, and little impact on the natural environment of the soil. However, this method requires the injection of bacterial solution and slurry in steps and multiple times, and the interval is too long to be several hours. The procedure is complicated and time-consuming. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a foundation treatment device and method combining microbial grouting and dry vibration, so as to achieve an organic combination of the two foundation treatment processes and improve the foundation treatment effect.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A dry vibratory device with a microbial grouting function, comprising a hanging head, a hanging rod, a vibration damper and a vibrating body connected in sequence from top to bottom;

[0008] The bottom end of the excitation body is provided with an air outlet;

[0009] The outer side wall of the excitation body is provided with a grouting nozzle;

[0010] The interior of the hanging head, the hanging rod, the vibration absorber and the exciting body is provided with an air supply channel, a grouting channel and a cooling channel connected to the external supply system; the air supply channel is connected to the air outlet, the grouting channel is connected to the grouting nozzle, and the cooling channel is an internal circulation channel and is provided on the inner side of the air supply channel and attached to the outer side of the exciting part surrounding the inner center of the exciting body.

[0011] Through the above technical scheme, the present invention integrates the vibro-impact function and the grouting function, realizes the coordinated operation of vibro-impact and grouting, improves construction efficiency, and reduces the switching of construction equipment and construction procedures. By increasing the pores of the soil through vibro-impacting and then filling the pores through grouting, the complex pore structure in the soil can be better filled, and the bearing capacity and stability of the foundation can be improved. The setting of the cooling channel can effectively reduce the heat generated by the hydraulic system during operation, protect the equipment from high temperature damage, and extend the service life of the equipment. The cooling channel forms a heat-insulating barrier to prevent the heat generated by the hydraulic system from being transferred to the grouting channel, avoid premature chemical reaction of the grouting medium due to the increase in temperature, and ensure the grouting effect.

[0012] Preferably, in the above-mentioned dry vibro-impacting device with microbial grouting function, the number of the grouting nozzles is multiple, and they are evenly arranged around the outer wall of the excitation body. Multiple grouting nozzles are evenly arranged around the excitation body, which can make the grouting medium evenly distributed in the soil and improve the uniformity and integrity of the foundation reinforcement. Evenly distributed grouting nozzles can better fill the pores in the soil, reduce grouting dead corners, and enhance the bearing capacity and anti-liquefaction ability of the foundation. For complex foundations such as coral soil foundations and soft foundations, uniform grouting can better adapt to their complex pore structures and improve the reinforcement effect.

[0013] Preferably, in the above-mentioned dry vibrating device with microbial grouting function, the supply system includes a slurry chamber and a cooling water chamber, the slurry chamber is connected to the end of the grouting channel away from the grouting nozzle through a grouting pipeline, and the cooling water chamber is connected to the cooling channel through an inlet pipe and a return pipe to form a circulation loop. The slurry supply and cooling water supply are integrated into one, which simplifies the equipment structure and improves the compactness and ease of operation of the equipment. The slurry chamber is connected to the grouting channel through a grouting pipeline, and can stably transport slurry to the grouting channel to ensure the continuity and stability of the grouting process. The cooling water chamber forms a circulation loop with the cooling channel through an inlet pipe and a return pipe, which can efficiently take away the heat generated by the hydraulic system and ensure the stability and reliability of the equipment when working for a long time. The recycling of cooling water reduces the consumption of cooling water and the operating cost of the equipment, which is in line with the green and low-carbon concept.

[0014] Preferably, in the above-mentioned dry vibro-impacting device with microbial grouting function, a grouting pump, a first pressure gauge and a control valve are provided on the grouting pipeline; a water pump, a second pressure gauge and a one-way valve are provided on the water inlet pipe. The grouting pump and the control valve on the grouting pipeline can accurately control the grouting pressure, flexibly adjust the grouting pressure according to different soil and foundation conditions, and improve the grouting effect. The first pressure gauge can monitor the grouting pressure in real time, and the operator can adjust the grouting parameters in time according to the reading of the pressure gauge to ensure the smooth progress of the grouting process. The water pump and the one-way valve on the water inlet pipe can accurately control the flow of cooling water to ensure a stable supply of cooling water. At the same time, the one-way valve prevents cooling water from flowing back and improves the reliability of the cooling system. By accurately controlling the grouting pressure and cooling water flow, equipment damage caused by excessive pressure or insufficient cooling water can be avoided, and the safety and reliability of the equipment can be improved.

[0015] Preferably, in the above-mentioned dry vibratory impingement device with microbial grouting function, the slurry chamber and the cooling water chamber are provided with a liquid refrigeration mechanism. The liquid refrigeration mechanism can keep the slurry in the slurry chamber in a low temperature state, prevent the slurry from chemically reacting prematurely during the storage process, and ensure the stability of the slurry and the grouting effect. The low temperature environment can extend the shelf life of the microbial slurry, reduce the waste of slurry, and reduce construction costs. The liquid refrigeration mechanism in the cooling water chamber can ensure the low temperature supply of cooling water, improve the cooling efficiency, and better protect the hydraulic system from high temperature damage. In a high-temperature construction environment, the liquid refrigeration mechanism can ensure the temperature stability of the slurry and cooling water, ensuring that the normal operation of the equipment and the microbial grouting effect are not affected.

[0016] Preferably, in the above-mentioned dry vibroflotation device with microbial grouting function, the supply system also includes an air pump installed on the top of the hanging head, and the air pump is connected to the end of the air supply channel away from the air outlet. The air pump can stably deliver high-pressure air to the air supply channel to ensure the ejection of high-pressure air from the air outlet, providing a stable air source for the vibroflotation process. The ejection of high-pressure air can enhance the vibroflotation effect, making it easier for the vibrator to drill into the soil and improving the vibroflotation efficiency. The air supply pressure can be flexibly adjusted by the air pump, and the vibroflotation parameters can be optimized according to different soil types and construction requirements to improve the adaptability and construction effect of the equipment. The air pump is installed on the top of the hanging head with a compact structure, which reduces the footprint of the equipment and improves the integration and ease of operation of the equipment.

[0017] Preferably, in the above-mentioned dry vibroflotation device with microbial grouting function, an air pressure sensor is provided at the air outlet. The air pressure sensor can monitor the air pressure at the air outlet in real time, and the operator can adjust the air supply pressure of the air pump in time according to the feedback signal of the air pressure sensor to ensure the stability and effectiveness of the vibroflotation process. The air pressure sensor can be connected to the control system of the air pump to realize automatic control of the air supply pressure. When the air pressure is too high or too low, it can automatically adjust or alarm to improve the safety and reliability of the equipment. By real-time monitoring of the air pressure, the operator can optimize the vibroflotation parameters according to the actual construction situation and improve the construction efficiency and quality. The provision of the air pressure sensor reduces the frequent manual adjustment of the air pressure, reduces the labor intensity of the operator, and improves the degree of automation of the construction.

[0018] Preferably, in the above-mentioned dry vibrating device with microbial grouting function, the pipe wall of the grouting channel has an interlayer, and the interlayer is a nano aerogel insulation layer. Nano aerogel is a highly efficient thermal insulation material with an extremely low thermal conductivity, which can significantly reduce the heat transfer in the grouting channel and ensure the stability of the slurry temperature. The insulation layer can effectively prevent the heat generated by the hydraulic system from being transferred to the grouting channel, avoid the slurry from chemically reacting prematurely due to the increase in temperature, and ensure the grouting effect. A stable temperature environment can extend the service life of the slurry in the grouting channel, reduce the waste of slurry, and reduce construction costs. The insulation layer ensures the temperature stability of the slurry during the grouting process, enables the slurry to be sprayed out and chemically react within the optimal temperature range, and improves the construction quality.

[0019] Preferably, in the above-mentioned dry vibratory impact device with microbial grouting function, the vibrating body adopts hydraulic power to drive a hydraulic motor as power, and the hydraulic motor drives the eccentric shaft to rotate through a coupling, thereby generating horizontal exciting force and amplitude distributed along the main shaft axis. The hydraulic power driving the hydraulic motor can provide powerful power, drive the eccentric shaft to rotate through a coupling, generate efficient horizontal exciting force and amplitude, and improve the vibration impact effect. The speed of the hydraulic motor is easy to adjust and has a wide adjustment range. It can flexibly adjust the vibration frequency according to different soil types and construction requirements, and enhance the adaptability and construction effect of the equipment. Compared with traditional motor systems, the hydraulic system has higher stability and reliability, can operate stably in complex construction environments, and reduce equipment failures. The hydraulic system can accurately control the power output according to actual construction needs, avoid unnecessary energy waste, reduce the energy consumption of equipment, and comply with the green and low-carbon concept.

[0020] The present invention also provides a method for a dry-type vibratory device with a microbial grouting function, wherein the ground is first vibrated by the vibration of the vibrating body and the ejection of high-pressure air from the air outlet; then, when the vibrating body is completely inserted below the ground, grouting is performed through the grouting nozzle, and during this process, the grouting medium is controlled to undergo a chemical reaction after being ejected by lowering the temperature.

[0021] Through the above technical scheme, the construction method of first vibrating and then grouting of the present invention realizes the coordinated operation of vibrating and grouting. The vibrating process increases the pores of the soil, and the grouting process fills the pores. The two cooperate with each other to improve the foundation reinforcement effect.

[0022] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a dry vibroflotation device and method with microbial grouting function, which has the following beneficial effects:

[0023] 1. Solve the problem that traditional vibratory impact devices are not effective in treating special foundation reinforcement. By combining microbial grouting with vibratory impaction, the pores can be effectively filled, soil particles can be bonded, and the bearing capacity and anti-liquefaction ability of the foundation can be improved.

[0024] 2. The present invention promotes the flow of slurry in the soil pores through the combination of vibration and grouting, improves the uniformity of reinforcement, and prevents bacterial liquid from remaining on the grouting pipe wall, while reducing the risk of blockage. Moreover, the grouting and vibration effect spread to the surroundings, so the reinforcement range is larger and the integrity is higher.

[0025] 3. Design a circulating water cooling system to take away the heat released by the hydraulic system, avoid overheating of the equipment, and protect the equipment. At the same time, a thermal barrier is formed to effectively isolate the hydraulic vibration system and the grouting system, ensuring that the slurry temperature will not rise rapidly and react prematurely to affect the microbial grouting.

[0026] 4. Effectively combine dry vibration and microbial grouting to effectively avoid the dilution and loss of bacterial solution caused by traditional water flushing method, and the destruction of the formed calcium carbonate crystal skeleton by water spraying, which affects the reinforcement.

[0027] 5. Use temperature-controlled microbial grouting to mix the bacterial liquid and the binder liquid without reaction, effectively avoiding traditional multiple distributed grouting, simplifying the construction process and shortening the construction time.

[0028] 6. It has a wider range of applications and strong adaptability. The hydraulic vibration system is more convenient to adjust the frequency than the traditional motor vibrator, and has a wider adjustment range. The grouting system can adjust the grouting pressure through the pressure gauge and grouting pump. It can adjust different vibration frequencies and grouting pressures according to different soil and foundation conditions, and make adjustments in real time according to the reinforcement conditions.

[0029] 7. Environmental protection and sustainability: Compared with the traditional water jetting method, dry vibration has no mud pollution. The microbial reinforcement technology has less pollution and is green and environmentally friendly. It conforms to the green and low-carbon concept, promotes the sustainable development of civil engineering, and has good ecological and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0031] Figure 1 The accompanying drawing is a schematic structural diagram of a dry vibratory device with a microbial grouting function provided by the present invention;

[0032] Figure 2 The accompanying drawing is a schematic diagram of the internal structure of the excitation body provided by the present invention;

[0033] Figure 3 The accompanying drawing is a top view of the excitation body provided by the present invention.

[0034] in:

[0035] 1-hanging head; 2-hanging rod; 3-shock absorber; 4-excitation body; 5-air outlet; 6-grouting nozzle; 7-air supply channel; 8-grouting channel; 9-cooling channel; 10-slurry chamber; 11-cooling water chamber; 12-grouting pipeline; 13-water inlet pipe; 14-water return pipe; 15-grouting pump; 16-first pressure gauge; 17-control valve; 18-water pump; 19-second pressure gauge; 20-check valve; 21-air pump; 22-air pressure sensor. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See attached Figure 1 To Attachment Figure 3 The embodiment of the present invention discloses a dry vibratory device with a microbial grouting function, comprising a hanging head 1, a hanging rod 2, a vibration absorber 3 and a vibrating body 4 connected in sequence from top to bottom;

[0038] The bottom end of the exciting body 4 has an air outlet 5;

[0039] The outer side wall of the exciting body 4 is provided with a grouting nozzle 6;

[0040] The interior of the hanging head 1, the hanging rod 2, the vibration absorber 3 and the exciting body 4 is provided with an air supply channel 7, a grouting channel 8 and a cooling channel 9 which are connected to the external supply system; the air supply channel 7 is connected to the air outlet 5, the grouting channel 8 is connected to the grouting nozzle 6, and the cooling channel 9 is an internal circulation channel and is arranged on the inner side of the air supply channel 7 and attached to the outer side of the exciting part surrounding the inner center of the exciting body 4.

[0041] In order to further optimize the above technical solution, there are multiple grouting nozzles 6 , which are evenly arranged around the outer wall of the exciting body 4 .

[0042] In order to further optimize the above technical solution, the supply system includes a slurry chamber 10 and a cooling water chamber 11. The slurry chamber 10 is connected to the end of the grouting channel 8 away from the grouting nozzle 6 through the grouting pipeline 12, and the cooling water chamber 11 is connected to the cooling channel 9 through the water inlet pipe 13 and the return pipe 14 to form a circulation loop.

[0043] In order to further optimize the above technical solution, a grouting pump 15, a first pressure gauge 16 and a control valve 17 are provided on the grouting pipeline 12; a water pump 18, a second pressure gauge 19 and a one-way valve 20 are provided on the water inlet pipe 13.

[0044] In order to further optimize the above technical solution, the slurry chamber 10 and the cooling water chamber 11 are provided with a liquid refrigeration mechanism.

[0045] In order to further optimize the above technical solution, the supply system further includes an air pump 21 installed on the top of the hanging head 1 , and the air pump 21 is connected to one end of the air supply channel 7 away from the air outlet 5 .

[0046] In order to further optimize the above technical solution, an air pressure sensor 22 is provided at the air outlet 5 .

[0047] In order to further optimize the above technical solution, the wall of the grouting channel 8 has an interlayer, and the interlayer is a nano aerogel insulation layer.

[0048] In order to further optimize the above technical solution, the vibrator 4 uses hydraulic power to drive the hydraulic motor as the power, and the hydraulic motor drives the eccentric shaft to rotate through the coupling, thereby generating horizontal exciting force and amplitude distributed along the main shaft axis. Thus, the vibrator can efficiently compact the surrounding soil. Compared with the transmission vibrator, the frequency of the hydraulic vibrator is easier to adjust and the adjustment range is wider.

[0049] The method of the dry-type vibratory device with microbial grouting function provided in this embodiment is as follows: first, the ground is vibrated by the vibration of the vibrating body 4 and the high-pressure air is ejected from the air outlet 5; then, when the vibrating body 4 is completely inserted into the ground, grouting is performed through the grouting nozzle 6. During this process, the grouting medium is controlled to undergo a chemical reaction after being ejected by lowering the temperature.

[0050] The bacterial liquid mentioned in this embodiment is Sporosarcina pasteurii (DSM33) (also known as Bacillus pasteurianus). The cementing liquid mentioned is a mixture of urea and calcium chloride.

[0051] The slurry chamber 10 is a mixed solution of bacterial liquid and cementing liquid. When the temperature is below 10°C, the bacterial activity is basically zero, and the bacterial liquid and the cementing liquid do not react. The bacterial liquid and the cementing liquid are mixed in advance and placed in the slurry chamber 10 for refrigeration. The temperature control method is used to prevent the distributed injection from making the reinforcement process cumbersome and time-consuming.

[0052] The walls of the 8 grouting channels are all built with nano-aerogel insulation layers. Aerogel is a highly efficient thermal insulation material with an extremely low thermal conductivity (0.012-0.020W / (m·K)), which is far superior to traditional thermal insulation materials (such as glass wool, rock wool, etc.). For grouting pipes, the thermal insulation performance of aerogel can significantly reduce heat loss, ensure that the slurry temperature is stable within the range of 5-8°C, and avoid premature reaction of microbial slurry or temperature fluctuations affecting the reinforcement effect.

[0053] The hydraulic vibrator releases heat when working. The cooling water is used to cool the hydraulic system and isolate the vibration system and grouting system to prevent the slurry temperature from rising.

[0054] This embodiment adopts dry vibrating to prevent the traditional vibrator from affecting the grouting,

[0055] Directions:

[0056] Open the one-way valve 20, and use the water pump 18 to press the cooling water in the cooling water chamber 11 into the equipment from the water inlet pipe 13. The cooling water passes through the cooling channel 9 and then flows back to the cooling water chamber 11 from the return pipe 14 for continuous circulation.

[0057] The equipment is lifted by a crane, and the hydraulic motor is driven by hydraulic power. The hydraulic motor drives the eccentric shaft to rotate at high speed through the coupling to generate high-frequency vibration. At the same time, high-pressure air is injected through the air pump 21. The high-pressure air passes through the air supply channel 7 and is finally ejected at the air outlet 5, and the ground is vibrated and densified in cooperation with the vibrator. Under the combined action of vibration and impact, the vibrator is drilled into the soil. The air pressure of the air pump 21 can be adjusted in real time through the air pressure feedback from the air pressure sensor 22.

[0058] When the vibrating body 4 is below the ground, the control valve 17 is opened and the grouting pump 15 is started. When the grouting pump 15 is started to inject the bacterial solution, the vibrating body 4 vibrates with the grouting pipe and the bacterial solution. During this period, the vibration frequency can be adjusted to make the bacterial solution evenly distributed in the pores of the soil and prevent the bacterial solution from remaining on the grouting pipe wall. After the cementing solution and the microbial bacterial solution leave the device, the temperature gradually increases. After reaching the reaction temperature, they fully react to generate calcium carbonate crystals to assist the vibrating body in vibrating and compacting the soil, thereby achieving the effect of strengthening the soft foundation.

[0059] The main points of this embodiment are:

[0060] 1. Integrated design: Deeply integrate the microbial grouting system and the vibratory device to make them work synchronously and efficiently. The microbial grouting system includes a bacterial liquid tank, a grouting pump, a pressure gauge, a corrosion-resistant delivery pipeline, etc., which work closely with the vibratory device. At the same time, the overall layout of the equipment is carefully planned to ensure that the vibration of the vibratory device does not interfere with the microbial grouting system, achieving the design goals of compact structure, convenient operation and convenient maintenance.

[0061] 2. Temperature-controlled premixed grouting system: The built-in liquid refrigeration device maintains a low temperature environment of 5-8℃, and realizes the premixed storage of bacterial liquid (Bacillus pasteurianus bacterial liquid) and cementing liquid (mixed liquid of urea and calcium chloride). The gradient temperature control technology is used to make the slurry temperature ≤10℃ during underground operations. The nano-aerogel insulation layer is built into the grouting pipeline to ensure that the slurry temperature will not rise in a short period of time. After being sprayed out, the ground temperature naturally rises to 25-30℃ to trigger the reaction, effectively avoiding the cumbersome process of traditional step-by-step grouting, simplifying the construction steps and shortening the construction time.

[0062] 3. Vibration-grouting-cooling synergistic structure: The cooling water channel surrounds the hydraulic vibrator to form a thermal barrier, reduce the impact of heat release from the hydraulic device on the grouting system, ensure the stability of the slurry, and prevent premature reaction of the bacterial liquid and the cementing liquid. The vibration frequency and grouting pressure are intelligently linked, which facilitates the adjustment of the frequency of the hydraulic vibrator, and the construction parameters are flexibly adjusted according to different soil and foundation conditions to enhance the adaptability of the equipment.

[0063] 4. Optimize the effect of microbial grouting: By combining vibration and grouting, the flow of slurry in the soil pores is promoted to improve the uniformity of reinforcement. Vibration can also prevent bacterial liquid from remaining on the grouting pipe wall and reduce the risk of blockage. Grouting and vibration can expand the reinforcement range and improve the integrity of the foundation.

[0064] 5. Use dry vibration technology: abandon the water flushing method of traditional vibration method, effectively avoid the dilution and loss of bacterial solution caused by water flushing, and the damage to the formed calcium carbonate crystal skeleton by water spraying, ensure that the effect of microbial grouting is not affected, and better play the reinforcement advantages of combining microbial grouting with vibration method.

[0065] This embodiment is mainly used in various complex foundation reinforcement scenarios in the field of civil engineering, especially for coral soil foundations, soft foundations, foundations with voids, cracks, and uneven settlement problems, etc., which have special reinforcement needs. It can widely serve the foundations of high-rise buildings, transportation hubs (such as airport runways, railway roadbeds, etc.), large bridge foundations, water conservancy and hydropower engineering dam foundations, and various foundation reinforcement projects related to marine development. Through precise intelligent control and efficient grouting and vibration collaborative operations, the bearing capacity of the foundation is significantly improved, stability is enhanced, and the risk of earthquake liquefaction is effectively resisted. The safety and stability of various engineering structures throughout their life cycle are effectively guaranteed, laying a solid foundation for civil engineering construction, and vigorously promoting the high-quality development and sustainability of engineering construction.

[0066] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0067] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dry vibratory device with microbial grouting function, comprising a hanging head (1), a hanging rod (2), a vibration damper (3) and a vibrating body (4) connected in sequence from top to bottom; characterized in that: The bottom end of the excitation body (4) is provided with an air outlet (5); The outer side wall of the vibration excitation body (4) is provided with a grouting nozzle (6); The interior of the hanging head (1), the hanging rod (2), the vibration absorber (3) and the excitation body (4) is provided with an air supply channel (7), a grouting channel (8) and a cooling channel (9) which are connected to an external supply system; the air supply channel (7) is connected to the air outlet (5), the grouting channel (8) is connected to the grouting nozzle (6), and the cooling channel (9) is an internal circulation channel and is arranged on the inner side of the air supply channel (7) and is attached to the outer side of the excitation part which is located at the inner center of the excitation body (4).

2. A dry vibrating device with microbial grouting function according to claim 1, characterized in that: The number of the grouting nozzles (6) is multiple and they are evenly arranged around the outer wall of the vibration body (4).

3. A dry vibrating device with microbial grouting function according to claim 1, characterized in that: The supply system comprises a slurry chamber (10) and a cooling water chamber (11); the slurry chamber (10) is connected to an end of the grouting channel (8) away from the grouting nozzle (6) via a grouting pipeline (12); the cooling water chamber (11) is connected to the cooling channel (9) via a water inlet pipe (13) and a water return pipe (14), thereby forming a circulation loop.

4. A dry vibrating device with microbial grouting function according to claim 3, characterized in that: The grouting pipeline (12) is provided with a grouting pump (15), a first pressure gauge (16) and a control valve (17); the water inlet pipe (13) is provided with a water pump (18), a second pressure gauge (19) and a one-way valve (20).

5. A dry vibrating device with microbial grouting function according to claim 3 or 4, characterized in that: The slurry chamber (10) and the cooling water chamber (11) are provided with a liquid refrigeration mechanism.

6. A dry vibrating device with microbial grouting function according to claim 3 or 4, characterized in that: The supply system further comprises an air pump (21) mounted on the top of the hanging head (1), and the air pump (21) is connected to an end of the air supply channel (7) away from the air outlet (5).

7. A dry vibrating device with microbial grouting function according to claim 6, characterized in that: An air pressure sensor (22) is provided at the air outlet (5).

8. The dry vibrating device with microbial grouting function according to claim 1, characterized in that: The pipe wall of the grouting channel (8) has an interlayer, and the interlayer is a nano aerogel heat insulation layer.

9. The dry vibrating device with microbial grouting function according to claim 1, characterized in that: The excitation body (4) uses hydraulic power to drive a hydraulic motor as power, and the hydraulic motor drives the eccentric shaft to rotate through a coupling, thereby generating a horizontal excitation force and amplitude distributed along the axial direction of the main shaft.

10. A method of a dry vibrating device with microbial grouting function according to any one of claims 1 to 9, characterized in that: First, the ground is vibrated by the vibration of the excitation body (4) and the high-pressure air ejected from the air outlet (5); then, when the excitation body (4) is completely inserted into the ground, grouting is performed through the grouting nozzle (6). During this process, the grouting medium is controlled to undergo a chemical reaction after being ejected by lowering the temperature.

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