Aggregate adding method for cement soil spiral stirring pile construction

Abstract

The invention relates to an aggregate-adding construction method for cement soil spiral stirring pile construction, which comprises the following steps: acquiring a construction stratum type, determining a construction scheme according to the construction stratum type and preset engineering requirements, and setting equipment parameters according to the construction scheme; acquiring physical characteristics of the aggregate, determining the putting amount of the aggregate according to the physical characteristics of the aggregate, and adding the aggregate based on the putting amount of the aggregate; an equipment starting instruction is generated based on the equipment parameters, a drilling tool is controlled to stir aggregate and cement soil according to the equipment starting instruction, stratum feedback data is monitored in real time, and the rotating speed and the descending speed of a drilling rod are dynamically adjusted; and according to a preset construction period, the compactness and the mechanical property of the pile body are obtained, and quality evaluation is conducted on the compactness and the mechanical property of the pile body through the nondestructive testing technology. The device has the effect of improving the aggregate adding quality in the cement soil spiral stirring pile construction.

Description

Technical Field

[0001] This application relates to the technical field of rotary mixing pile construction, and particularly to a construction method for adding aggregate to cement-soil rotary mixing piles. Background Art

[0002] Currently, in the field of construction engineering, especially in foundation reinforcement and underground engineering support, traditional rotary mixing pile construction techniques have been widely applied. Such techniques usually rely on specific models of rotary mixing pile machines to effectively stir soil mixtures by applying sufficient torque on the ground and finally form pile bodies with a certain strength to meet engineering requirements.

[0003] Existing traditional rotary mixing pile construction methods mainly have two forms: one is the single-axis rotary mixing pile construction method, which is relatively mature and widely used in medium and small-scale engineering projects; the other is the double-axis or multi-axis rotary mixing pile construction method, which can improve the mixing efficiency to a certain extent and is suitable for large-scale engineering projects. Although these traditional methods have solved the problem of foundation reinforcement to a certain extent, they are powerless when encountering dense sand layers and strongly weathered rock layers, and often cannot effectively improve the strength of pile bodies.

[0004] The above-mentioned existing technical solutions have the following defects: The parameter adjustment and control in the construction process of traditional rotary mixing pile construction methods are relatively fixed, unable to fully cope with the changes in different stratum conditions, resulting in poor pile body quality, so there is room for improvement. Summary of the Invention

[0005] In order to improve the quality of adding aggregate to cement-soil rotary mixing pile construction, this application provides a construction method for adding aggregate to cement-soil rotary mixing piles.

[0006] The first invention object of this application is achieved through the following technical solutions: A construction method for adding aggregate to cement-soil rotary mixing piles, the construction method for adding aggregate to cement-soil rotary mixing piles includes: Obtain the type of construction stratum, determine the construction plan according to the type of construction stratum and the preset engineering requirements, and set the equipment parameters according to the construction plan; Obtain the physical properties of the aggregate, determine the aggregate feeding amount according to the physical properties of the aggregate, and add the aggregate based on the aggregate feeding amount; Generate an equipment start command based on the equipment parameters, control the drill to stir the aggregate and cement soil according to the equipment start command, and monitor the stratum feedback data in real time, dynamically adjusting the rotation speed and descending speed of the drill pipe; Obtain the compactness and mechanical properties of the pile body according to the preset construction period, and conduct quality assessment on the compactness and mechanical properties of the pile body by using non-destructive testing techniques.

[0007] By adopting the above technical solutions, by obtaining the type of the construction formation and determining the construction plan according to the type of the construction formation and the preset engineering requirements, it is possible to ensure that the construction plan is optimized according to the actual formation and engineering requirements, thereby improving the construction accuracy and avoiding construction delays or quality problems caused by mismatches in formation characteristics; by obtaining the physical properties of the aggregate and determining the aggregate feeding amount, it is possible to accurately adjust the feeding amount according to the actual properties of the aggregate and the formation conditions, thereby ensuring the quality of the cement-soil mixture and avoiding the problem that the strength of the pile body does not meet the requirements. Incorporating the aggregate addition technology into the traditional rotary mixing pile construction process not only significantly enhances the physical and mechanical property performance of the pile body itself, but also helps to extend its service life, thereby indirectly achieving the purpose of energy conservation and emission reduction; by generating an equipment start instruction based on the equipment parameters and controlling the drill to mix, it is possible to dynamically adjust the operating state of the drill according to different formation conditions, ensuring the drilling efficiency and construction safety; by using non-destructive testing technology to evaluate the density and mechanical properties of the pile body, it is possible to detect the quality problems of the pile body in a timely manner and avoid potential structural safety hazards caused by pile body defects in the later stage.

[0008] In one example, the present application can be further configured as follows: the obtaining of the type of the construction formation and determining the construction plan according to the type of the construction formation and the preset engineering requirements specifically includes: Obtaining the formation basic detection data, and based on the formation basic monitoring data, analyzing and determining the type of the construction formation through a preset algorithm; According to different types of the construction formation, selecting the corresponding drill tool components through a preset construction database or intelligent analysis system.

[0009] By adopting the above technical solutions, by obtaining the formation basic detection data and analyzing and determining the type of the construction formation through a preset algorithm, it is possible to accurately analyze the formation structure, ensure the selection of the most suitable drill tool and construction method, thereby improving the construction efficiency and reducing the equipment wear; by selecting the corresponding drill tool components according to different formation types, it is possible to select the best drill tool according to the formation characteristics, ensure the smooth progress of the drilling process, and reduce the construction problems caused by equipment mismatch.

[0010] In one example, the present application can be further configured as follows: the obtaining of the physical properties of the aggregate, determining the aggregate feeding amount according to the physical properties of the aggregate, and performing aggregate feeding based on the aggregate feeding amount specifically includes: Obtaining the physical properties of the aggregate in the aggregate chamber; According to the physical properties of the aggregate and in combination with the type of the construction formation, calculating the feeding amount of the aggregate to meet the pile body specification requirements of the engineering requirements; Based on the aggregate feeding amount and controlling the feeding rate of the aggregate according to the drilling time in the engineering requirements.

[0011] By adopting the above technical solutions, by obtaining the physical properties of the aggregate in the aggregate chamber, the state of the aggregate can be monitored in real time to ensure that it meets the construction requirements, thereby avoiding the influence of the pile quality caused by the aggregate quality problem; by calculating the aggregate feeding amount according to the physical properties of the aggregate and the type of the construction formation, the accurate control of the aggregate feeding can be realized to ensure that the physical and mechanical properties of the pile meet the design standards; by controlling the aggregate feeding rate based on the aggregate feeding amount and according to the drilling time in the engineering requirements, the accurate adjustment of the aggregate feeding process can be realized to ensure the stability and high efficiency of the construction process.

[0012] In one example, the present application can be further configured as: the aggregate chamber is arranged close to the drilling part of the drill pipe, and an electronic valve for controlling the aggregate feeding amount is equipped in the aggregate chamber.

[0013] By adopting the above technical solutions, by arranging the aggregate chamber close to the drilling part of the drill pipe and equipping an electronic valve for controlling the aggregate feeding amount in the aggregate chamber, the feeding amount of the aggregate can be accurately controlled in real time, thereby ensuring the dynamic adjustment of the aggregate feeding amount under different formation conditions, optimizing the quality of the cement-soil mixture, and improving the construction accuracy.

[0014] In one example, the present application can be further configured as: the real-time monitoring of the formation feedback data and the dynamic adjustment of the rotation speed and the descending speed of the drill pipe specifically include: Real-time collecting the physical parameters such as the hardness and density of the formation during the drilling process as the formation feedback data; Judging the hardness and the accumulation situation of the formation according to the formation feedback data, and adjusting the rotation speed and the descending speed of the drill pipe according to the hardness and the formation situation of the formation.

[0015] By adopting the above technical solutions, by real-time collecting the physical parameters such as the hardness and density of the formation during the drilling process as the formation feedback data, the formation change information can be accurately obtained to provide data support for the subsequent parameter adjustment, thereby optimizing the drilling efficiency and improving the construction accuracy; by judging the hardness and the accumulation situation of the formation according to the formation feedback data and adjusting the rotation speed and the descending speed of the drill pipe, the working state of the drilling tool can be dynamically adjusted according to the different characteristics of the formation, thereby improving the stability of the drilling and avoiding the overload or damage of the equipment.

[0016] In one example, the present application can be further configured as: the adjustment of the rotation speed and the descending speed of the drill pipe according to the hardness and the accumulation situation of the formation specifically includes: In the case that the hardness of the formation is a hard formation, increasing the rotation speed of the drill pipe and reducing the descending speed; In the case that the hardness of the formation is a soft formation, reducing the rotation speed of the drill pipe and increasing the descending speed; In the case where the accumulation of the formation is a complex accumulation formation, the rotation speed and the descending speed of the drill pipe are adjusted in real time according to the hardness of the formation.

[0017] By adopting the above technical solution, by adjusting the rotation speed and the descending speed of the drill pipe according to the hardness and the accumulation of the formation, the drill tool can adapt to different formation conditions, ensuring the smoothness and stability of the drilling process; by increasing the rotation speed of the drill pipe and reducing the descending speed in the hard formation, the drilling efficiency can be improved and the wear of the drill tool can be avoided; by reducing the rotation speed of the drill pipe and increasing the descending speed in the soft formation, over-stirring and formation disturbance can be prevented, ensuring the construction accuracy; by adjusting the rotation speed and the descending speed of the drill pipe in real time in the complex accumulation formation, the smooth switching between different layers of the drill tool can be ensured, improving the construction flexibility and stability.

[0018] In one example, the present application can be further configured as: the quality of the pile body is evaluated by non-destructive testing technology, specifically including: Using ultrasonic testing technology to evaluate the density of the pile body and check the internal distribution and strength of the pile body; Using ray imaging technology to detect the inside of the pile body and evaluate its mechanical properties and structural stability; According to the non-destructive testing results, evaluate whether the pile body meets the engineering design requirements.

[0019] By adopting the above technical solution, by using ultrasonic testing technology to evaluate the density of the pile body, real-time monitoring of the density of the pile body can be achieved, and quality problems of the pile body can be found in time, thereby improving the quality of the pile body and ensuring the safety of construction; by using ray imaging technology to detect the inside of the pile body and evaluate the mechanical properties, the internal structure and mechanical properties of the pile body can be comprehensively evaluated, ensuring that the pile body meets the design requirements in terms of bearing capacity and stability, and avoiding potential quality hazards in the later stage.

[0020] In summary, the present application includes the following beneficial technical effects: 1. By obtaining the type of the construction formation and determining the construction plan according to the construction formation type and the preset engineering requirements, it is possible to ensure that the construction plan is optimized according to the actual formation and engineering requirements, thereby improving the construction accuracy and avoiding construction delays or quality problems caused by mismatched formation characteristics. By obtaining the physical properties of the aggregate and determining the aggregate feeding amount, it is possible to accurately adjust the feeding amount according to the actual properties of the aggregate and the formation conditions, thereby ensuring the quality of the cement-soil mixture and avoiding the problem that the pile body strength does not meet the requirements. Incorporating the aggregate addition technology into the traditional rotary mixing pile construction process not only significantly enhances the physical and mechanical property performance of the pile body itself, but also helps to extend its service life, thereby indirectly achieving the purpose of energy conservation and emission reduction. By generating an equipment startup instruction based on the equipment parameters and controlling the drill tool to stir, it is possible to dynamically adjust the operating state of the drill tool according to different formation conditions, ensuring the drilling efficiency and construction safety. By using non-destructive testing technology to evaluate the density and mechanical properties of the pile body, it is possible to detect the quality problems of the pile body in a timely manner and avoid potential structural safety hazards caused by pile body defects in the later stage. 2. By obtaining the physical properties of the aggregate in the aggregate chamber, it is possible to monitor the state of the aggregate in real time, ensure that it meets the construction requirements, and thus avoid affecting the pile body quality due to aggregate quality problems. By calculating the aggregate feeding amount according to the physical properties of the aggregate and the construction formation type, it is possible to achieve precise control of the aggregate feeding, ensuring that the physical and mechanical properties of the pile body meet the design standards. By controlling the aggregate feeding rate based on the aggregate feeding amount and according to the drilling time in the engineering requirements, it is possible to achieve precise adjustment of the aggregate feeding process and ensure the stability and high efficiency of the construction process. 3. By arranging the aggregate chamber close to the drilling part of the drill pipe and equipping the aggregate chamber with an electronic valve for controlling the aggregate feeding amount, it is possible to accurately control the aggregate feeding amount in real time, thereby ensuring the dynamic adjustment of the aggregate feeding amount under different formation conditions, optimizing the quality of the cement-soil mixture, and improving the construction accuracy. Description of the Drawings

[0021] Figure 1 is a flow chart of the construction method for adding aggregate to a cement-soil rotary mixing pile in an embodiment of the present application; Figure 2 is a flow chart for implementing step S10 in the construction method for adding aggregate to a cement-soil rotary mixing pile in an embodiment of the present application; Figure 3 is a flow chart for implementing step S20 in the construction method for adding aggregate to a cement-soil rotary mixing pile in an embodiment of the present application; Figure 4 is a principle block diagram of the aggregate chamber in the construction method for adding aggregate to a cement-soil rotary mixing pile in an embodiment of the present application; Figure 5 is a flow chart for implementing step S30 in the construction method for adding aggregate to a cement-soil rotary mixing pile in an embodiment of the present application; Figure 6 It is a flowchart for implementing step S32 in the construction method of adding aggregate to a cement-soil mixing pile in an embodiment of the present application; Figure 7 It is a flowchart for implementing step S40 in the construction method of adding aggregate to a cement-soil mixing pile in an embodiment of the present application; Figure 8 It is a principle block diagram of a cement-soil mixing pile construction aggregate adding system in an embodiment of the present application; Figure 9 It is a schematic diagram of the equipment in an embodiment of the present application. Detailed implementation manners

[0022] The following further elaborates on the present application in conjunction with the accompanying drawings.

[0023] In one embodiment, as Figure 1 shown, the present application discloses a construction method for adding aggregate to a cement-soil mixing pile, which specifically includes the following steps: S10: Obtain the type of the construction stratum, determine the construction plan according to the type of the construction stratum and the preset engineering requirements, and set the equipment parameters according to the construction plan.

[0024] Specifically, obtaining the stratum foundation detection data is carried out through technologies such as geological sensors, drilling equipment, or ground penetrating radar. The data includes, but is not limited to, the density, hardness, particle size distribution, humidity, and layer structure of the stratum. Based on these data, different strata are classified through a preset algorithm to determine whether it is a soft soil layer, sand layer, clay layer, rock layer, or mixed layer, and in combination with parameters such as preset engineering requirements, pile body design requirements, construction time, and environmental factors, the most suitable construction plan is formulated. The construction plan involves multiple aspects such as selecting the type of drill tool, drilling method, drill tool rotation speed, and propulsion speed, and the optimal construction configuration is derived through a calculation model or empirical rules. Among them, the drill tool integrates multiple drill pipes and multiple groups of power heads to facilitate flexible adjustment of the construction mode.

[0025] S20: Obtain the physical properties of the aggregate, determine the aggregate feeding amount according to the physical properties of the aggregate, and perform aggregate feeding based on the aggregate feeding amount.

[0026] Specifically, the physical properties of the aggregate are obtained mainly through detection methods such as particle size analysis, density testing, and humidity measurement of the aggregate to ensure that it meets the engineering requirements. The uniformity of the particle size distribution and the density directly affect the strength and stability of the concrete. Based on these data, the total amount of aggregate to be put in is calculated, and the aggregate addition technology is incorporated into the traditional rotary mixing pile construction process. This not only significantly enhances the physical and mechanical property performance of the pile body itself but also helps to extend its service life, thereby indirectly achieving the purpose of energy conservation and emission reduction. During this process, factors such as the type of formation, the requirements of the construction process, and the preset pile body strength requirements are considered. Based on these parameters and combined with the construction needs, the appropriate amount of aggregate to be put in is automatically calculated through a preset calculation model, and precise control is carried out according to this amount to ensure that the amount of aggregate added each time can meet the design requirements, while meeting the mechanical properties and stability requirements of the pile body, and avoiding unstable pile body quality caused by uneven or excessive aggregate.

[0027] S30: Generate an equipment start command based on the equipment parameters, control the drill to mix the aggregate and the cement soil according to the equipment start command, and monitor the formation feedback data in real time to dynamically adjust the rotation speed and the descending speed of the drill pipe.

[0028] Specifically, when generating the equipment start command based on the equipment parameters, first, the initial equipment start parameters are set according to the preset drill configuration, formation data, aggregate input amount, and construction plan. These initial parameters include the rotation speed of the drill, power output, drill type, drilling depth, etc. The start command adjusts these parameters according to the actual situation at the construction site. For example, when encountering a harder formation, the rotation speed and the penetration rate are adjusted to improve the drilling efficiency, and when encountering a softer formation, the drilling speed is reduced to ensure the stable operation of the drill. At the same time, during the drilling process, data such as the hardness, density, drilling force, and torque feedback from the formation are collected in real time. Based on these data, the rotation speed and the descending speed of the drill pipe are dynamically adjusted, and the drilling parameters are optimized in real time to ensure that the drill can meet the requirements of different formations and avoid damage to the drill or reduced construction efficiency caused by improper parameter settings. This multi-functional electrical control system combined with an adjustable drill greatly improves the construction accuracy and efficiency, enabling the diameter range to be expanded to Ф1400mm - Ф2000mm and improving the performance in large-diameter and deep mixing projects.

[0029] S40: Obtain the density and mechanical properties of the pile body according to the preset construction cycle, and conduct a quality assessment of the density and mechanical properties of the pile body by using non-destructive testing techniques.

[0030] Specifically, after the construction period is completed, non-destructive testing techniques such as ultrasonic testing and radiographic imaging are used to evaluate the compactness, mechanical properties, etc. of the pile body. For example, ultrasonic testing can effectively evaluate the internal structure of the pile body and detect whether there are cavities or unevenly compacted areas in the pile body. Radiographic imaging technology is used to evaluate the mechanical properties of the pile body and judge the mechanical properties inside the pile body, such as compressive strength and stability. Finally, based on the results of non-destructive testing, it is determined whether the pile body meets the engineering design requirements to ensure that the quality of the pile body can reach the standard.

[0031] In one embodiment, as Figure 2 shown, in step S10, that is, obtaining the construction formation type, and determining the construction plan according to the construction formation type and the preset engineering requirements, specifically including: S11: Obtain the formation foundation detection data. Based on the formation foundation monitoring data, analyze and determine the construction formation type through a preset algorithm.

[0032] Specifically, the acquisition of formation foundation monitoring data usually relies on underground geological survey equipment. Technologies such as geological sensors, drilling equipment, or seismic wave detection can be used to obtain different characteristics of underground soil. The data includes but is not limited to geological parameters such as hardness, compactness, and humidity. Through these data, combined with preset algorithms such as neural network algorithms or fuzzy logic algorithms, analyze and judge whether the construction formation type is sandy soil, clay, rock formation, or other types of formations, and then determine the required construction plan.

[0033] S12: According to different construction formation types, select the corresponding drilling tool components through a preset construction database or intelligent analysis system.

[0034] Specifically, after obtaining the construction formation type, according to the physical characteristics of the formation and the construction requirements, query the preset construction database through an intelligent analysis system. The database stores construction parameters and drilling tool selection criteria for different formation types. The system will automatically recommend suitable drilling tool components according to the selected formation type. For example, a special spiral drill bit is recommended for clay layers, and a more efficient double-headed or multi-headed drilling tool component is selected for sand layers, so as to ensure that the selection of drilling tools can improve construction efficiency and avoid construction problems caused by mismatched drilling tools.

[0035] In one embodiment, as Figure 3 shown, in step S20, that is, obtaining the physical properties of the aggregate, and determining the aggregate feeding amount according to the physical properties of the aggregate, and performing aggregate feeding based on the aggregate feeding amount, specifically including: S21: Obtain the physical properties of the aggregate in the aggregate chamber.

[0036] Specifically, the physical properties of the aggregate in the aggregate chamber are mainly obtained by measuring properties such as the particle size, density, and humidity of the aggregate. Particle size analysis can be carried out by the sieving method, density can be obtained by the standard weighing method, and humidity is tested by the drying method. These physical properties obtained will be used as the basic data for subsequent aggregate placement calculations to ensure that the quality of the aggregate meets the design requirements and satisfies the construction requirements.

[0037] S22: According to the physical properties of the aggregate and in combination with the type of construction formation, calculate the amount of aggregate to be placed to meet the pile body specification requirements of the engineering needs.

[0038] Specifically, according to the physical properties of the aggregate such as particle size, density, and humidity, and in combination with the bearing capacity of different formations, the design strength requirements of the pile body, and the mixing requirements during the construction process, calculate the placement amount through a preset calculation model. For example, according to the dry-wet ratio of the aggregate and the bearing capacity of the formation, automatically calculate the required aggregate placement ratio to ensure the strength and stability of the cement-soil mixture and meet the design requirements of the pile body.

[0039] S23: Based on the amount of aggregate placed and according to the drilling time in the engineering needs, control the feeding rate of the aggregate.

[0040] Specifically, after calculating the amount of aggregate to be placed, according to the preset drilling time and construction progress, calculate the amount of aggregate to be added per unit time to ensure uniform mixing during the drilling process and avoid affecting the pile body quality due to uneven feeding. The feeding rate is usually precisely adjusted by an electronic control system to ensure uniform aggregate placement each time and meet the design standards.

[0041] In one embodiment, as Figure 4 shown, in step S21, the aggregate chamber is arranged near the drilling part of the drill pipe, and an electronic valve for controlling the amount of aggregate placed is equipped in the aggregate chamber.

[0042] Specifically, the aggregate chamber is arranged at a position near the drilling part of the drill pipe, located at the connection part of the drill bit and the drill tool, ensuring that the aggregate can be evenly distributed in the cement soil during the mixing and drilling processes. The electronic valve is connected to the aggregate chamber, and the opening and closing of the electronic valve are automatically adjusted by the control system according to the real-time monitored data to ensure precise control of the aggregate placement amount. The adjustment of the electronic valve can not only adjust the feeding rate according to the physical properties of the aggregate, such as humidity and particle size, but also adjust in real time according to the working conditions of the drill tool in different formations, avoiding excessive or insufficient aggregate placement resulting in uneven mixing or unqualified pile body strength, thereby more flexibly adjusting the concrete composition ratio and better adapting to the complex and changeable construction site environment.

[0043] In one embodiment, as Figure 5As shown, in step S30, that is, real-time monitoring of formation feedback data and dynamically adjusting the rotation speed and descending speed of the drill pipe, specifically including: S31: Real-time collect physical parameters such as the hardness and density of the formation during drilling as formation feedback data.

[0044] Specifically, during drilling, use geological sensors or monitoring equipment to real-time collect physical parameters such as the hardness, density, and humidity of the formation. These parameters can reflect the changes in the formation. Hardness data can help evaluate whether the drill tool requires additional pressure to penetrate the formation, and density data can help determine the compactness of the formation, so as to timely adjust the drilling strategy. The sensors will collect these data in real-time and feed them back to the control system to ensure that all the collected data can be used for subsequent parameter adjustment.

[0045] S32: Judge the hardness and accumulation situation of the formation according to the formation feedback data, and adjust the rotation speed and descending speed of the drill pipe according to the hardness and formation situation of the formation.

[0046] Specifically, according to the real-time collected formation feedback data, judge the hardness and accumulation situation of the formation. Soft formations such as clay and silt layers usually have lower hardness and higher humidity. During drilling, the rotation speed should be appropriately reduced to avoid excessive rotation of the drill tool causing formation disturbance; while hard formations such as sandstone and rock layers have higher hardness, the drill tool needs to drill at a higher rotation speed and reduce the descending speed to improve the penetration efficiency. Accumulated formations such as alternating hard and soft layers or complex rock layers will cause different resistances in different areas during drilling. Therefore, adjust the rotation speed and descending speed of the drill pipe in real-time according to the feedback to ensure smooth progress in each geological structure layer.

[0047] In an embodiment, as Figure 6 shown, in step S32, that is, adjusting the rotation speed and descending speed of the drill pipe according to the hardness and accumulation situation of the formation, specifically including: S321: When the hardness of the formation is a hard formation, increase the rotation speed of the drill pipe and reduce the descending speed.

[0048] Specifically, when the feedback data determines that the formation is a hard formation, due to the greater drilling difficulty, it is necessary to increase the rotation speed of the drill pipe to improve the cutting force of the drill tool to ensure that the drill tool can penetrate smoothly. At the same time, to avoid excessive resistance of the drill tool in the hard layer, reduce the descending speed of the drill pipe, which can reduce the wear of the drill tool and ensure the stability during drilling.

[0049] S322: When the hardness of the formation is a soft formation, reduce the rotation speed of the drill pipe and increase the descending speed.

[0050] Specifically, in soft formations, the formation resistance is relatively small, and the drill string is easier to advance. Therefore, it is necessary to reduce the rotational speed of the drill pipe to prevent excessive agitation or formation disturbance. At the same time, to improve the drilling efficiency, the lowering speed can be appropriately increased to enable the drill string to advance smoothly and avoid the drill pipe sinking too slowly, which may affect the construction progress.

[0051] S323: When the formation accumulation condition is a complex accumulation formation, adjust the rotational speed and lowering speed of the drill pipe in real time according to the hardness of the formation.

[0052] Specifically, for complex accumulation formations, there are usually alternations of different hardness layers or uneven formation structures. During the drilling process, the formation with alternating hard and soft layers will have an unstable impact on the operation of the drill string. In this case, adjust the rotational speed and lowering speed of the drill pipe in real time according to the feedback of the formation hardness to ensure that the drill string can adapt to the formation changes. For example, reduce the rotational speed and increase the lowering speed in soft layers, and increase the rotational speed and appropriately slow down the lowering speed in hard layers, so as to ensure the construction accuracy and efficiency.

[0053] In one embodiment, as Figure 7 shown, in step S40, that is, conduct quality assessment on the pile body density and mechanical properties through non-destructive testing technology, specifically including: S41: Use ultrasonic testing technology to evaluate the pile body density and determine whether the pile body density meets the preset engineering requirements.

[0054] Specifically, ultrasonic testing technology emits ultrasonic signals and analyzes their reflected waves. According to the propagation speed and attenuation degree of the reflected waves, the density of the pile body is evaluated. The reflected waves of a pile body with higher density will be faster and have less attenuation. Through these test results, it can be judged whether there are voids or uneven regions inside the pile body. If the density does not meet the preset requirements, it is necessary to further optimize the construction parameters or take remedial measures to ensure the bearing capacity and stability of the pile body.

[0055] S42: Use ray imaging technology to detect the inside of the pile body and evaluate the mechanical properties, and determine whether the mechanical properties meet the preset engineering requirements.

[0056] Specifically, ray imaging technology such as X-rays or γ-rays, etc., penetrates the pile body with rays and images the inside of the pile body, analyzes information such as density changes and structural stability in the image, so as to evaluate the mechanical properties of the pile body, such as compressive strength and overall stability, and deeply understand the internal structure of the pile body without damaging the pile body, ensure that the pile body meets the design standards, and make timely adjustments when the mechanical properties do not meet the standards.

[0057] It should be understood that the sequence numbers of the steps in the above embodiments do not indicate the order of execution. The order of execution of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0058] In one embodiment, a construction aggregate adding system for cement-soil mixing piles is provided. This construction aggregate adding system for cement-soil mixing piles corresponds one-to-one with the construction aggregate adding method for cement-soil mixing piles in the above embodiments. As Figure 8 shown, this construction aggregate adding system for cement-soil mixing piles includes a formation analysis module, an aggregate calculation module, an equipment control module, and a pile body evaluation module. The detailed description of each functional module is as follows: The formation analysis module is used to obtain the type of the construction formation, determine the construction plan according to the type of the construction formation and the preset engineering requirements, and set the equipment parameters according to the construction plan; The aggregate calculation module is used to obtain the physical properties of the aggregate, determine the aggregate feeding amount according to the physical properties of the aggregate, and perform aggregate feeding based on the aggregate feeding amount; The equipment control module is used to generate an equipment start instruction based on the equipment parameters, control the drill to stir the aggregate and the cement soil according to the equipment start instruction, and monitor the formation feedback data in real time to dynamically adjust the rotation speed and the descending speed of the drill pipe; The pile body evaluation module is used to obtain the compactness and mechanical properties of the pile body according to the preset construction period, and perform quality evaluation on the compactness and mechanical properties of the pile body by using non-destructive testing techniques.

[0059] Optionally, the formation analysis module specifically includes: The formation data acquisition sub-module is used to obtain the basic formation detection data, and analyze and determine the type of the construction formation based on the basic formation monitoring data through a preset algorithm; The drill selection sub-module is used to select the corresponding drill assembly according to different types of construction formations through a preset construction database or an intelligent analysis system.

[0060] Optionally, the aggregate calculation module specifically includes: The aggregate property acquisition sub-module is used to obtain the physical properties of the aggregate in the aggregate chamber; The feeding amount calculation sub-module is used to calculate the feeding amount of the aggregate according to the physical properties of the aggregate and in combination with the type of the construction formation to meet the pile body specification requirements of the engineering requirements; The feeding rate control sub-module is used to control the feeding rate of the aggregate based on the aggregate feeding amount and according to the drilling time in the engineering requirements.

[0061] Optionally, the equipment control module specifically includes: The formation feedback sub-module is used to collect physical parameters such as the hardness and density of the formation during the drilling process in real time as the formation feedback data; The drilling parameter adjustment sub-module is used to judge the hardness and accumulation condition of the formation according to the formation feedback data, and adjust the rotation speed and descending speed of the drill pipe according to the hardness of the formation and the formation condition.

[0062] Optionally, the drilling parameter adjustment sub-module specifically includes: The hard layer adjustment unit is used to increase the rotation speed of the drill pipe and reduce the descending speed when the hardness of the formation is a hard formation; The soft layer adjustment unit is used to reduce the rotation speed of the drill pipe and increase the descending speed when the hardness of the formation is a soft formation; The accumulation adjustment unit is used to adjust the rotation speed and descending speed of the drill pipe in real time according to the hardness of the formation when the accumulation condition of the formation is a complex accumulation formation.

[0063] Optionally, the pile body evaluation module specifically includes: The ultrasonic detection sub-module is used to evaluate the density of the pile body by using ultrasonic detection technology and judge whether the density of the pile body meets the preset engineering requirements; The ray imaging sub-module is used to detect the inside of the pile body by using ray imaging technology and evaluate the mechanical properties, and judge whether the mechanical properties meet the preset engineering requirements.

[0064] For the specific limitations of the cement-soil mixing pile construction with aggregate adding system, reference can be made to the limitations of the cement-soil mixing pile construction with aggregate adding method in the above text, which will not be elaborated here. Each module in the above cement-soil mixing pile construction with aggregate adding system can be implemented in whole or in part by software, hardware and their combination. The above modules can be embedded in the processor in the computer device in the form of hardware or independent of it, or stored in the memory in the computer device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to the above modules.

[0065] In one embodiment, a computer device is provided. The computer device can be a server, and its internal structure diagram can be as Figure 9 shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, it realizes a cement-soil mixing pile construction with aggregate adding method.

[0066] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the following steps are implemented: Obtain the type of the construction formation, determine the construction plan according to the type of the construction formation and the preset engineering requirements, and set the equipment parameters according to the construction plan; Obtain the physical properties of the aggregate, determine the aggregate feeding amount according to the physical properties of the aggregate, and perform aggregate feeding based on the aggregate feeding amount; Generate an equipment start instruction based on the equipment parameters, control the drill to stir the aggregate and the cement soil according to the equipment start instruction, and monitor the formation feedback data in real time, and dynamically adjust the rotation speed and the descending speed of the drill pipe; According to the preset construction period, obtain the density and mechanical properties of the pile body, and perform quality assessment on the density and mechanical properties of the pile body by using non-destructive testing techniques.

[0067] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented: Obtain the type of the construction formation, determine the construction plan according to the type of the construction formation and the preset engineering requirements, and set the equipment parameters according to the construction plan; Obtain the physical properties of the aggregate, determine the aggregate feeding amount according to the physical properties of the aggregate, and perform aggregate feeding based on the aggregate feeding amount; Generate an equipment start instruction based on the equipment parameters, control the drill to stir the aggregate and the cement soil according to the equipment start instruction, and monitor the formation feedback data in real time, and dynamically adjust the rotation speed and the descending speed of the drill pipe; According to the preset construction period, obtain the density and mechanical properties of the pile body, and perform quality assessment on the density and mechanical properties of the pile body by using non-destructive testing techniques.

[0068] Those of ordinary skill in the art can understand that all or part of the processes in the construction methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above construction methods. Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in this application can include non-volatile and / or volatile memories. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0069] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is used as an example for illustration. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the system can be divided into different functional units or modules to complete all or part of the functions described above.

[0070] The above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included in the protection scope of this application.

Claims

1. A construction method of adding aggregate to soil-cement mixing piles, characterized in that The construction method of adding aggregate to soil-cement mixing piles includes: Obtain the type of construction stratum, determine the construction plan according to the type of construction stratum and the preset engineering requirements, and set the equipment parameters according to the construction plan; Obtain the physical properties of the aggregate, determine the aggregate dosage according to the physical properties of the aggregate, and add the aggregate based on the aggregate dosage; Generate an equipment start command based on the equipment parameters, control the drill to mix the aggregate and soil-cement according to the equipment start command, and monitor the formation feedback data in real time to dynamically adjust the rotation speed and descending speed of the drill pipe; According to the preset construction period, obtain the density and mechanical properties of the pile body, and conduct quality assessment on the density and mechanical properties of the pile body by using non-destructive testing technology.

2. The construction method of adding aggregate to the cement-soil mixing pile according to claim 1, characterized in that, The obtaining of the type of construction stratum and determining the construction plan according to the type of construction stratum and the preset engineering requirements specifically includes: Obtain the formation basic detection data, and analyze and determine the type of construction stratum based on the formation basic monitoring data through a preset algorithm; According to different types of construction strata, select the corresponding drill tool components through a preset construction database or intelligent analysis system.

3. The construction method of adding aggregate to the cement-soil mixing pile according to claim 1, characterized in that The obtaining of the physical properties of the aggregate, determining the aggregate dosage according to the physical properties of the aggregate, and adding the aggregate based on the aggregate dosage specifically includes: Obtain the physical properties of the aggregate in the aggregate chamber; According to the physical properties of the aggregate and in combination with the type of construction stratum, calculate the aggregate dosage to meet the pile body specification requirements of the engineering requirements; Based on the aggregate dosage, control the aggregate feeding rate according to the drilling time in the engineering requirements.

4. The construction method of adding aggregate to the cement-soil mixing pile according to claim 3, characterized in that, The aggregate chamber is arranged close to the drilling part of the drill pipe, and an electronic valve for controlling the aggregate dosage is equipped in the aggregate chamber.

5. The construction method of adding aggregate to the cement-soil mixing pile according to claim 1, characterized in that The real-time monitoring of the formation feedback data and dynamically adjusting the rotation speed and descending speed of the drill pipe specifically includes: Collect the physical parameters such as the hardness and density of the formation during the drilling process in real time as the formation feedback data; Judge the hardness and accumulation condition of the formation according to the formation feedback data, and adjust the rotation speed and descending speed of the drill pipe according to the hardness and formation condition of the formation.

6. The construction method of adding aggregate to the cement-soil mixing pile according to claim 5, characterized in that, The adjusting of the rotation speed and descending speed of the drill pipe according to the hardness and accumulation condition of the formation specifically includes: In the case where the hardness of the formation is a hard formation, increase the rotation speed of the drill pipe and reduce the descending speed; In the case where the hardness of the formation is a soft formation, reduce the rotation speed of the drill pipe and increase the descending speed; In the case where the accumulation condition of the formation is a complex accumulation formation, adjust the rotation speed and descending speed of the drill pipe in real time according to the hardness of the formation.

7. The construction method of adding aggregate to the cement-soil mixing pile according to claim 1, characterized in that, The quality assessment of the density and mechanical properties of the pile body by using non-destructive testing technology specifically includes: Adopt ultrasonic testing technology to evaluate the density of the pile body and judge whether the density of the pile body meets the preset engineering requirements; Adopt ray imaging technology to detect the inside of the pile body and evaluate the mechanical properties, and judge whether the mechanical properties meet the preset engineering requirements.

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