Treatment method and treatment system for serious slurry leakage of rotary drilling cast-in-place pile in high fill area

Abstract

The invention discloses a treatment method for serious slurry leakage of a rotary excavating hole-forming cast-in-place pile in a high filling area, which comprises the following steps of: in a rotary excavating drilling process, monitoring parameters such as slurry liquid level, hole depth and drilling pressure in a hole in real time; the proportion and viscosity of the slurry are adjusted through a slurry management system; when the serious slurry leakage phenomenon is detected, emergency measures are immediately started, and the injection pressure of the slurry is increased through supercharging equipment so as to repair a slurry leakage area; according to the real-time monitoring data, the rotating speed and the feeding rate of the rotary excavating equipment are adjusted through an automatic control system in combination with the operation parameters of the rotary excavating equipment; a local grouting measure is adopted, and dense grouting is conducted around the grout leakage area; according to the treatment method for serious slurry leakage of the rotary excavating hole-forming cast-in-place pile in the high-fill area, through multiple means such as real-time monitoring, dynamic adjustment, pressurized grouting and local grouting, the construction stability, efficiency and quality are improved, and the occurrence of construction period delay and extra cost is reduced.

Description

Technical Field

[0001] This invention relates to a method and system for treating severe grout leakage in rotary-drilled cast-in-place piles in high-fill areas. Background Technology

[0002] When constructing rotary-drilled cast-in-place piles in high-fill areas, the complex geological conditions and uneven soil structure, especially the high stone content in the fill or incomplete clearing of the original ground, often lead to hidden grout leakage channels inside the pile hole. Grout leakage typically occurs because the drilling mud escapes through these hidden channels during drilling, causing a rapid drop in the mud level and affecting its support for the pile hole. This not only prevents the mud level from being maintained at a suitable height, affecting pile quality, but may also trigger pile hole collapse, causing construction interruptions, delays, and increased construction costs.

[0003] In existing technologies, common methods for addressing grout leakage include pressurized grouting, adjusting the grout mix ratio, and mechanically repairing the leakage channels. However, these methods often have limitations. For example, pressurized grouting is not effective in some cases and cannot completely seal the leakage channels; while adjusting the grout mix ratio can improve the viscosity and fluidity of the grout to some extent, it is still difficult to fundamentally solve the problem for more complex leakage channels; in addition, although mechanical repair methods can partially solve the grout leakage problem, they are complex to operate and inefficient, making it difficult to cope with the rapidly changing needs of construction sites.

[0004] Therefore, existing methods for addressing grout leakage during rotary-drilled cast-in-place pile construction in high-fill areas generally suffer from drawbacks such as poor effectiveness, long processing times, and high costs, failing to meet increasingly stringent construction requirements and technical standards. To improve construction quality, shorten the construction period, and reduce costs, there is an urgent need for an efficient, reliable, and highly adaptable method to completely resolve the grout leakage problem during rotary-drilled cast-in-place pile construction in high-fill areas. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a method and system for treating severe grout leakage in rotary-drilled cast-in-place piles in high-fill areas. By employing multiple methods such as real-time monitoring, dynamic adjustment, pressurized grouting, and localized grouting, the invention comprehensively solves the problem of severe grout leakage during the construction of rotary-drilled cast-in-place piles in high-fill areas, thereby improving the stability, efficiency, and quality of construction and reducing project delays and additional costs.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A method for treating severe grout leakage in rotary-drilled cast-in-place piles in high-fill areas includes the following steps:

[0008] During rotary drilling, the mud level, hole depth, and drilling pressure parameters in the hole are monitored in real time.

[0009] By using a mud management system, the mud ratio and viscosity are adjusted to ensure the stability and fluidity of the mud in high fill areas.

[0010] When a serious grout leakage is detected, emergency measures should be initiated immediately, and the injection pressure of the grout should be increased by using a booster device to repair the leakage area;

[0011] Based on real-time monitoring data and combined with the operating parameters of the rotary drilling equipment, the rotation speed and feed rate of the rotary drilling equipment are adjusted through the automated control system.

[0012] Local grouting measures were taken, with denser grouting around the grout leakage area to fill it.

[0013] Preferably, the mud management system includes a mud circulation system, a mud concentration monitoring instrument, and a mud mixing device.

[0014] As a preferred method, during rotary drilling, the method for real-time monitoring of the mud level, hole depth, and drilling pressure parameters in the hole is as follows:

[0015] A liquid level sensor is used to monitor the level of the drilling mud in the borehole. The liquid level sensor is installed in the drilling operation area and transmits the data to the monitoring system in real time via wireless transmission.

[0016] A depth sensor is installed on the drill bit of the rotary drilling equipment, which monitors the depth by measuring the winding length of the winch.

[0017] A pressure sensor is used to monitor the contact pressure between the drill bit and the soil during rotary drilling. The pressure sensor is installed near the drill bit.

[0018] As a preferred method, adjusting the mud mix ratio and viscosity through a mud management system to ensure the stability and fluidity of the mud in high fill areas is as follows:

[0019] By monitoring the rheological properties of the mud in real time, including viscosity η, density ρ, and fluidity Q, the ratio of solids S and water W in the mud is automatically adjusted based on the monitoring data to ensure that the mud has appropriate viscosity and fluidity. The specific adjustment formula is as follows:

[0020]

[0021] Where η is the viscosity of the mud, k is a constant, S is the concentration of solids in the mud, W is the concentration of water, and n is the rheological index.

[0022] The amount of thickener added to the mud is dynamically adjusted according to the soil quality of the high fill area and the drilling depth H. The amount of thickener A added can be determined by the following formula.

[0023]

[0024] Where A is the amount of thickener added, C is a constant, H is the drilling depth, L is the standard reference depth, and α is a coefficient adjusted according to soil conditions;

[0025] The type and proportion of chemical additives in the mud are adjusted by the automated control module in the mud management system to improve the mud's resistance to loss, settlement, and borehole wall stability in high fill areas. The proportion P of the chemical additives is adjusted according to the following formula:

[0026]

[0027] Based on data provided by the mud concentration monitoring instrument, the mud concentration (Cmud) is automatically adjusted, and the chemical composition of the mud is corrected in real time to maintain optimal fluidity and stability. The concentration adjustment formula is as follows:

[0028]

[0029] Where Cmud is the mud concentration, Wi is the mass ratio of each component, ρi is the density of each component, and n is the number of types of components in the mud.

[0030] Preferably, when severe grout leakage is detected, emergency measures are immediately initiated, and the injection pressure of the grout is increased using a booster device to repair the leakage area.

[0031] By monitoring the mud level, depth and pressure data in the borehole in real time through the mud management system, the specific location and range of the leakage area can be determined, and the area that needs to be pressurized can be determined based on the real-time data.

[0032] Start the booster equipment, which includes a high-pressure pump P. The pumping pressure Pinj is adjusted using the following formula to ensure that the mud injection can effectively replenish the leakage area:

[0033] P inj =P base +ΔP leak

[0034] Where Pbase is the normal operating pressure, and ΔPleak is the pressure difference increased according to the grout leakage situation. The grout leakage situation can be fed back in real time by the pressure sensor in the borehole. This boosted pressure can overcome the resistance of grout loss and ensure that the grout is effectively injected into the grout leakage area.

[0035] After increasing the mud injection pressure, the mud flow rate Q is stably controlled in conjunction with the pressure through the mud pipeline system. The specific flow rate control formula is as follows:

[0036] Q = A pipe ·V inj

[0037] Where Q is the mud flow velocity, Apipe is the cross-sectional area of ​​the pipe, and Vinj is the mud injection rate.

[0038] The automated control system continuously monitors the changes in pressure inside the borehole during the pressurization process, and adjusts the injection volume and injection pressure of the booster pump in real time to ensure that the mud can flow stably in the leakage area.

[0039] Localized grouting was carried out in the grout leakage area. Excess grout was recovered using a grout return system. At the same time, the area around the grout leakage area was compacted to ensure that the grout fully covered and stably repaired the grout leakage area.

[0040] As a preferred method, based on real-time monitoring data and the operating parameters of the rotary drilling rig, the method of adjusting the rotation speed and feed rate of the rotary drilling rig through an automated control system is as follows:

[0041] Based on real-time monitoring data such as mud pressure, borehole depth, and torque, the optimal rotary drilling speed is calculated, and the formula for adjusting the speed is as follows:

[0042]

[0043] Where Nrpm is the rotational speed of the rotary drilling equipment, Ttarget is the target torque, Keff is the efficiency coefficient of the rotary drilling equipment, and D is the diameter of the drill bit;

[0044] Based on real-time monitoring of mud pressure, drilling depth, and mud flow rate data, adjust the feed rate of the rotary drilling rig according to the following formula:

[0045]

[0046] Where Frate is the feed rate, Kfeed is an adjustment coefficient related to soil properties and equipment operating capacity, Pmud is the real-time monitored mud pressure, Pbase is the normal operating pressure, and Ddrill is the drill bit diameter.

[0047] Another technical problem to be solved by this invention is to provide a treatment system for severe grout leakage in rotary-drilled cast-in-place piles in high-fill areas, comprising:

[0048] Rotary drilling equipment is used for drilling operations;

[0049] The real-time monitoring system is used to monitor the drilling mud level, hole depth, and drilling pressure parameters in the hole in real time.

[0050] The mud management system is used to adjust the mud ratio and viscosity to ensure the stability and fluidity of the mud in high fill areas.

[0051] The booster device is used to repair the leaking area by increasing the injection pressure of the slurry when a serious slurry leakage is detected.

[0052] The automated control system adjusts the rotation speed and feed rate of the rotary drilling equipment based on real-time monitoring data and the operating parameters of the rotary drilling equipment.

[0053] Localized grouting equipment is used to perform intensified grouting around the grout leakage area to fill the leakage area.

[0054] Preferably, the pressurization device includes a high-pressure pump and a mud pipeline for providing stable mud pressure in the event of mud leakage.

[0055] Preferably, the automated control system monitors the equipment status, construction parameters, and mud status in real time through sensors and feedback systems.

[0056] The beneficial effects of this invention are:

[0057] This solution monitors borehole conditions in real time by tracking parameters such as mud level, depth, and drilling pressure. This allows for timely detection of serious mud leakage issues, preventing further impact on borehole construction. Due to the complex soil composition and high water content in high-fill areas, the stability and fluidity of the mud are easily affected. By dynamically adjusting the mud mix ratio and viscosity through a mud management system, the solution ensures the mud maintains stable support under complex geological conditions, effectively preventing or exacerbating mud leakage.

[0058] By increasing the mud injection pressure using a booster device, leakage areas can be repaired more effectively, leakage channels can be sealed, and the mud level can be prevented from continuing to drop and affecting construction quality. During rotary drilling, the drilling speed and feed rate need to be flexibly adjusted according to soil conditions. Traditional rotary drilling operations often rely on manual adjustments, which are inefficient and lack precision. Through an automated control system, the rotation speed and feed rate of the rotary drilling equipment are automatically adjusted based on real-time monitoring data and the operating parameters of the equipment, making the drilling process more precise and efficient, and avoiding further leakage or other construction problems caused by improper operation. By denser grouting around the leakage area to fill it, the stability of the pile hole is ensured, the hole wall collapse is prevented, and construction progress is maintained. Attached Figure Description

[0059] Figure 1 This is a flowchart of a method for treating severe grout leakage in rotary-drilled cast-in-place piles in high-fill areas, according to the present invention. Specific implementation methods

[0060] The following description, in conjunction with the principles and features of the invention, provides examples for illustrative purposes only and is not intended to limit the scope of the invention. The invention is described more specifically by way of example in the following paragraphs. The advantages and features of the invention will become clearer from the following description and claims.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example:

[0062] A method for treating severe grout leakage in rotary-drilled cast-in-place piles in high-fill areas includes the following steps:

[0063] During rotary drilling, the mud level, hole depth, and drilling pressure parameters in the hole are monitored in real time.

[0064] By using a mud management system, the mud ratio and viscosity are adjusted to ensure the stability and fluidity of the mud in high fill areas.

[0065] When a serious grout leakage is detected, emergency measures should be initiated immediately, and the injection pressure of the grout should be increased by using a booster device to repair the leakage area;

[0066] Based on real-time monitoring data and combined with the operating parameters of the rotary drilling equipment, the rotation speed and feed rate of the rotary drilling equipment are adjusted through the automated control system.

[0067] Local grouting measures were taken, with denser grouting around the grout leakage area to fill it.

[0068] By monitoring parameters such as the mud level, hole depth, and drilling pressure in real time, leakage can be detected and addressed in its early stages, preventing further leakage, ensuring hole stability during construction, and preventing pile hole collapse or mud leakage.

[0069] During rotary drilling, advanced monitoring systems (such as level sensors, pressure sensors, and depth gauges) are used to continuously record changes in the mud level, hole depth, and drilling pressure. Through real-time data analysis, the system can set thresholds to trigger an alarm when the mud level drops too quickly or the drilling pressure is abnormal, alerting the operator to mud leakage.

[0070] The soil in high-fill areas is complex and unstable, and traditional mud mix proportions are difficult to adapt to different soil conditions, leading to mud failure. This solution uses a mud management system to dynamically adjust the mud mix proportions and viscosity, ensuring that the mud maintains ideal fluidity and stability under different geological conditions, thereby effectively preventing mud leakage.

[0071] The mud management system (such as automated mixing devices and online testing instruments) monitors the viscosity, density, and rheological properties of the mud in real time and automatically adjusts the mixing ratio based on the monitoring data. According to changes in soil quality (such as soil particle size and water content), the system can automatically adjust the swelling and rheological properties of the mud so that the mud can adapt to different soil layers and ensure that the mud in the borehole always has high stability and fluidity.

[0072] When a serious grout leakage is detected, the grout injection pressure can be increased in a timely manner by using a booster device, which can quickly repair the leakage area, prevent the spread of large-scale grout leakage problems, and thus shorten the construction time and reduce project delays.

[0073] When grout leakage occurs, the injection pressure of the drilling mud is increased using pressurization equipment (such as high-pressure pumps or grouting systems). This injects the mud into the leakage area, filling potential voids and preventing the leakage channel from expanding further. Based on real-time monitoring data, the automated control system adjusts the rotation speed and feed rate of the rotary drilling rig. By controlling the feed rate during drilling, the pressure on the borehole wall is reduced, preventing further grout leakage caused by excessive drilling speed. Intensified grouting is carried out around the leakage area to increase the compaction of the surrounding soil, further sealing the leakage channel and ensuring the continuity of construction.

[0074] The mud management system includes a mud circulation system, mud concentration monitoring instruments, and mud mixing equipment. During rotary drilling, the method for real-time monitoring of the mud level, borehole depth, and drilling pressure parameters is as follows:

[0075] A liquid level sensor is used to monitor the level of the drilling mud in the borehole. The liquid level sensor is installed in the drilling operation area and transmits the data to the monitoring system in real time via wireless transmission.

[0076] A depth sensor is installed on the drill bit of the rotary drilling equipment, which monitors the depth by measuring the winding length of the winch.

[0077] A pressure sensor is used to monitor the contact pressure between the drill bit and the soil during rotary drilling. The pressure sensor is installed near the drill bit.

[0078] Real-time data feedback from level, depth, and pressure sensors allows for precise control of the mud level, borehole depth, and drilling pressure. This precise control ensures the stability of the mud during rotary drilling, preventing problems such as mud leakage and borehole collapse caused by excessive mud level fluctuations or abnormal drilling pressure.

[0079] By using sensors to monitor and feed data back to the monitoring system in real time, errors and misjudgments caused by manual operation can be reduced, improving the automation and accuracy of the construction process. The system can automatically adjust operating parameters based on real-time data, achieving automated control during construction and minimizing the need for manual intervention.

[0080] Because these sensors can monitor and provide data in real time, construction teams can quickly identify potential problems, such as rapid changes in mud level or abnormal drilling pressure, enabling them to take swift action and prevent major safety accidents or quality issues. Real-time data monitoring also enhances emergency response capabilities during construction, ensuring construction safety.

[0081] The method of adjusting the mud mix ratio and viscosity through a mud management system to ensure the stability and fluidity of the mud in high fill areas is as follows:

[0082] By monitoring the rheological properties of the mud in real time, including viscosity η, density ρ, and fluidity Q, the ratio of solids S and water W in the mud is automatically adjusted based on the monitoring data to ensure that the mud has appropriate viscosity and fluidity. The specific adjustment formula is as follows:

[0083]

[0084] Where η is the viscosity of the mud, k is a constant, S is the concentration of solids in the mud, W is the concentration of water, and n is the rheological index.

[0085] The amount of thickener added to the mud is dynamically adjusted according to the soil quality of the high fill area and the drilling depth H. The amount of thickener A added can be determined by the following formula.

[0086]

[0087] Where A is the amount of thickener added, C is a constant, H is the drilling depth, L is the standard reference depth, and α is a coefficient adjusted according to soil conditions;

[0088] The type and proportion of chemical additives in the mud are adjusted by the automated control module in the mud management system to improve the mud's resistance to loss, settlement, and borehole wall stability in high fill areas. The proportion P of the chemical additives is adjusted according to the following formula:

[0089]

[0090] Based on data provided by the mud concentration monitoring instrument, the mud concentration (Cmud) is automatically adjusted, and the chemical composition of the mud is corrected in real time to maintain optimal fluidity and stability. The concentration adjustment formula is as follows:

[0091]

[0092] Where Cmud is the mud concentration, Wi is the mass ratio of each component, ρi is the density of each component, and n is the number of types of components in the mud.

[0093] By monitoring the rheological properties of the drilling mud (such as viscosity, density, and fluidity) in real time, the system can automatically adjust the ratio of solids to water in the mud, thereby ensuring that the mud has appropriate viscosity and fluidity, and guaranteeing a smooth drilling process. This adjustment can adapt to different soil conditions and drilling depths, avoiding construction difficulties caused by unsuitable mud properties, such as unstable borehole walls and drill string jamming.

[0094] By dynamically adjusting the amount of thickener and the proportion of chemical additives, the mud's resistance to loss, settlement, and borehole wall stability in high-fill areas can be significantly improved. This adjustment not only enhances the stability of the mud but also effectively reduces problems such as mud loss, settlement, and borehole wall collapse, thereby lowering the risks during construction.

[0095] This mud management system adjusts various components in the mud through an automated control module, significantly reducing the need for manual intervention. The system automatically adjusts the mud concentration and ratio based on real-time monitoring data, ensuring the mud is always in optimal condition. This reduces errors and workload associated with manual operation, and improves the automation and accuracy of construction.

[0096] When severe grout leakage is detected, emergency measures should be initiated immediately. This involves increasing the injection pressure of the grout using booster equipment to repair the leaking area.

[0097] By monitoring the mud level, depth and pressure data in the borehole in real time through the mud management system, the specific location and range of the leakage area can be determined, and the area that needs to be pressurized can be determined based on the real-time data.

[0098] Start the booster equipment, which includes a high-pressure pump P. The pumping pressure Pinj is adjusted using the following formula to ensure that the mud injection can effectively replenish the leakage area:

[0099] P inj =P base +ΔP leak

[0100] Where Pbase is the normal operating pressure, and ΔPleak is the pressure difference increased according to the grout leakage situation. The grout leakage situation can be fed back in real time by the pressure sensor in the borehole. This boosted pressure can overcome the resistance of grout loss and ensure that the grout is effectively injected into the grout leakage area.

[0101] After increasing the mud injection pressure, the mud flow rate Q is stably controlled in conjunction with the pressure through the mud pipeline system. The specific flow rate control formula is as follows:

[0102] Q = A pipe ·V inj

[0103] Where Q is the mud flow velocity, Apipe is the cross-sectional area of ​​the pipe, and Vinj is the mud injection rate.

[0104] The automated control system continuously monitors the changes in pressure inside the borehole during the pressurization process, and adjusts the injection volume and injection pressure of the booster pump in real time to ensure that the mud can flow stably in the leakage area.

[0105] Localized grouting was carried out in the grout leakage area. Excess grout was recovered using a grout return system. At the same time, the area around the grout leakage area was compacted to ensure that the grout fully covered and stably repaired the grout leakage area.

[0106] By precisely monitoring the mud level, depth, and pressure data within the borehole, the specific location and extent of mud leakage can be quickly determined, allowing for targeted activation of booster equipment for repair. This method effectively replenishes the leakage area, ensuring stable mud flow and preventing wellbore collapse or borehole deformation caused by mud loss. Real-time adjustments to the injection volume and pressure of the booster pump via an automated control system ensure stable mud flow within the leakage area. This automated management reduces reliance on manual operation and improves operational precision and efficiency.

[0107] By recycling excess mud through a mud recirculation system and compacting the area around the leak, the repair effect can be further enhanced, while reducing mud waste and saving costs. This recycling and compaction method not only ensures that the leak area is adequately covered, but also optimizes resource utilization.

[0108] Based on real-time monitoring data and the operating parameters of the rotary drilling rig, the method for adjusting the rotational speed and feed rate of the rotary drilling rig through the automated control system is as follows:

[0109] Based on real-time monitoring data such as mud pressure, borehole depth, and torque, the optimal rotary drilling speed is calculated, and the formula for adjusting the speed is as follows:

[0110]

[0111] Where Nrpm is the rotational speed of the rotary drilling equipment, Ttarget is the target torque, Keff is the efficiency coefficient of the rotary drilling equipment, and D is the diameter of the drill bit;

[0112] Based on real-time monitoring of mud pressure, drilling depth, and mud flow rate data, adjust the feed rate of the rotary drilling rig according to the following formula:

[0113]

[0114] Where Frate is the feed rate, Kfeed is an adjustment coefficient related to soil properties and equipment operating capacity, Pmud is the real-time monitored mud pressure, Pbase is the normal operating pressure, and Ddrill is the drill bit diameter.

[0115] The automated control system monitors key data such as mud pressure, hole depth, and torque in real time, enabling precise calculation and adjustment of the rotary drilling rig's rotation speed and feed rate, thus making the drilling process more efficient. By dynamically adjusting operating parameters, it ensures the rotary drilling rig always operates at its optimal state, maximizing work efficiency and shortening drilling time. Through a real-time monitoring and feedback system, it precisely controls the operation of the rotary drilling rig, preventing equipment overload or drill bit damage caused by excessively large or small operating parameters, reducing malfunctions and accidents, and improving operational safety.

[0116] By precisely controlling rotational speed and feed rate, ineffective energy waste and excessive equipment wear are avoided, thereby reducing operating costs. Furthermore, the automated control system can optimize mud usage by adjusting parameters such as mud pressure in real time, reducing mud consumption and waste. The automated control system can also collect and analyze operational data in real time, providing operators with clear and accurate operational feedback, enhancing operational controllability. Through real-time adjustments to the operation process, operators can better predict and control the progress of the operation.

[0117] A system for treating severe grout leakage in rotary-drilled cast-in-place piles in high-fill areas includes:

[0118] Rotary drilling equipment is used for drilling operations;

[0119] The real-time monitoring system is used to monitor the drilling mud level, hole depth, and drilling pressure parameters in the hole in real time.

[0120] The mud management system is used to adjust the mud ratio and viscosity to ensure the stability and fluidity of the mud in high fill areas.

[0121] The booster device is used to repair the leaking area by increasing the injection pressure of the slurry when a serious slurry leakage is detected.

[0122] The automated control system adjusts the rotation speed and feed rate of the rotary drilling equipment based on real-time monitoring data and the operating parameters of the rotary drilling equipment.

[0123] Localized grouting equipment is used to perform intensified grouting around the grout leakage area to fill the leakage area.

[0124] Preferably, the pressurization device includes a high-pressure pump and a mud pipeline for providing stable mud pressure in the event of mud leakage.

[0125] Preferably, the automated control system monitors the equipment status, construction parameters, and mud status in real time through sensors and feedback systems.

[0126] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention. The implementation of the present invention is not limited thereto. All other modifications, substitutions or alterations made to the above structure of the present invention based on the above content of the present invention, in accordance with ordinary technical knowledge and common practice in the field, without departing from the basic technical idea of ​​the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A method for treating severe grout leakage in rotary-drilled cast-in-place piles in high-fill areas, characterized in that, Includes the following steps: During rotary drilling, the mud level, hole depth, and drilling pressure parameters in the hole are monitored in real time. By using a mud management system, the mud ratio and viscosity are adjusted to ensure the stability and fluidity of the mud in high fill areas. When a serious grout leakage is detected, emergency measures should be initiated immediately, and the injection pressure of the grout should be increased by using a booster device to repair the leakage area; Based on real-time monitoring data and combined with the operating parameters of the rotary drilling equipment, the rotation speed and feed rate of the rotary drilling equipment are adjusted through the automated control system. Local grouting measures were taken, with denser grouting around the grout leakage area to fill it.

2. The method for treating severe grout leakage in rotary-drilled cast-in-place piles in high embankment areas according to claim 1, characterized in that: The mud management system includes a mud circulation system, mud concentration monitoring instruments, and mud mixing equipment.

3. The method for treating severe grout leakage in rotary-drilled cast-in-place piles in high embankment areas according to claim 1, characterized in that: The method for real-time monitoring of drilling parameters such as mud level, hole depth, and drilling pressure during rotary drilling is as follows: A liquid level sensor is used to monitor the level of the drilling mud in the borehole. The liquid level sensor is installed in the drilling operation area and transmits the data to the monitoring system in real time via wireless transmission. A depth sensor is installed on the drill bit of the rotary drilling equipment, which monitors the depth by measuring the winding length of the winch. A pressure sensor is used to monitor the contact pressure between the drill bit and the soil during rotary drilling. The pressure sensor is installed near the drill bit.

4. The method for treating severe grout leakage in rotary-drilled cast-in-place piles in high embankment areas according to claim 3, characterized in that: The method of adjusting the mud mix ratio and viscosity through a mud management system to ensure the stability and fluidity of the mud in high fill areas is as follows: By monitoring the rheological properties of the mud in real time, including viscosity η, density ρ, and fluidity Q, the ratio of solids S and water W in the mud is automatically adjusted based on the monitoring data to ensure that the mud has appropriate viscosity and fluidity. The specific adjustment formula is as follows: Where η is the viscosity of the mud, k is a constant, S is the concentration of solids in the mud, W is the concentration of water, and n is the rheological index. The amount of thickener added to the mud is dynamically adjusted according to the soil quality of the high fill area and the drilling depth H. The amount of thickener A added can be determined by the following formula. Where A is the amount of thickener added, C is a constant, H is the drilling depth, L is the standard reference depth, and α is a coefficient adjusted according to soil conditions; The type and proportion of chemical additives in the mud are adjusted by the automated control module in the mud management system to improve the mud's resistance to loss, settlement, and borehole wall stability in high fill areas. The proportion P of the chemical additives is adjusted according to the following formula: Based on data provided by the mud concentration monitoring instrument, the mud concentration (Cmud) is automatically adjusted, and the chemical composition of the mud is corrected in real time to maintain optimal fluidity and stability. The concentration adjustment formula is as follows: Where Cmud is the mud concentration, Wi is the mass ratio of each component, ρi is the density of each component, and n is the number of types of components in the mud.

5. The method for treating severe grout leakage in rotary-drilled cast-in-place piles in high embankment areas according to claim 4, characterized in that: When severe grout leakage is detected, emergency measures should be initiated immediately. This involves increasing the injection pressure of the grout using booster equipment to repair the leaking area. By monitoring the mud level, depth and pressure data in the borehole in real time through the mud management system, the specific location and range of the leakage area can be determined, and the area that needs to be pressurized can be determined based on the real-time data. Start the booster equipment, which includes a high-pressure pump P. The pumping pressure Pinj is adjusted using the following formula to ensure that the mud injection can effectively replenish the leakage area: P inj =P base +ΔP leak Where Pbase is the normal operating pressure, and ΔPleak is the pressure difference increased according to the grout leakage situation. The grout leakage situation can be fed back in real time by the pressure sensor in the borehole. This boosted pressure can overcome the resistance of grout loss and ensure that the grout is effectively injected into the grout leakage area. After increasing the mud injection pressure, the mud flow rate Q is stably controlled in conjunction with the pressure through the mud pipeline system. The specific flow rate control formula is as follows: Q=A pipe ·V inj Where Q is the mud flow velocity, Apipe is the cross-sectional area of ​​the pipe, and Vinj is the mud injection rate. The automated control system continuously monitors the changes in pressure inside the borehole during the pressurization process, and adjusts the injection volume and injection pressure of the booster pump in real time to ensure that the mud can flow stably in the leakage area. Localized grouting was carried out in the grout leakage area. Excess grout was recovered using a grout return system. At the same time, the area around the grout leakage area was compacted to ensure that the grout fully covered and stably repaired the grout leakage area.

6. The method for treating severe grout leakage in rotary-drilled cast-in-place piles in high embankment areas according to claim 5, characterized in that: Based on real-time monitoring data and the operating parameters of the rotary drilling rig, the method for adjusting the rotational speed and feed rate of the rotary drilling rig through the automated control system is as follows: Based on real-time monitoring data such as mud pressure, borehole depth, and torque, the optimal rotary drilling speed is calculated, and the formula for adjusting the speed is as follows: Where Nrpm is the rotational speed of the rotary drilling equipment, Ttarget is the target torque, Keff is the efficiency coefficient of the rotary drilling equipment, and D is the diameter of the drill bit; Based on real-time monitoring of mud pressure, drilling depth, and mud flow rate data, adjust the feed rate of the rotary drilling rig according to the following formula: Where Frate is the feed rate, Kfeed is an adjustment coefficient related to soil properties and equipment operating capacity, Pmud is the real-time monitored mud pressure, Pbase is the normal operating pressure, and Ddrill is the drill bit diameter.

7. A treatment system for severe grout leakage in rotary-drilled cast-in-place piles in high-fill areas, characterized in that, include: Rotary drilling equipment is used for drilling operations; The real-time monitoring system is used to monitor the drilling mud level, hole depth, and drilling pressure parameters in the hole in real time. The mud management system is used to adjust the mud ratio and viscosity to ensure the stability and fluidity of the mud in high fill areas. The booster device is used to repair the leaking area by increasing the injection pressure of the slurry when a serious slurry leakage is detected. The automated control system adjusts the rotation speed and feed rate of the rotary drilling equipment based on real-time monitoring data and the operating parameters of the rotary drilling equipment. Localized grouting equipment is used to perform intensified grouting around the grout leakage area to fill the leakage area.

8. The treatment system for severe grout leakage in rotary-drilled cast-in-place piles in high embankment areas according to claim 7, characterized in that, The pressurization equipment includes a high-pressure pump and mud pipes, used to provide stable mud pressure in the event of mud leakage.

9. The treatment system for severe grout leakage in rotary-drilled cast-in-place piles in high embankment areas according to claim 7, characterized in that, The automated control system monitors equipment status, construction parameters, and mud status in real time through sensors and feedback systems.

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