Shield segment prefabrication method and production line

Abstract

The invention discloses a shield segment prefabrication method and a production line, and relates to the technical field of shield segment prefabrication production. The shield segment prefabrication method comprises the steps that concrete is poured into a shield segment prefabrication mold; in the length direction of the prefabricated shield segment mold, a plurality of sequentially-arranged temperature monitoring intervals are obtained through marking, and the multiple temperature monitoring intervals jointly cover concrete; the concrete and the prefabricated shield segment mold are put into a steam curing kiln; steam curing is conducted on the concrete, and temperature information of the concrete corresponding to the temperature monitoring intervals is obtained through the temperature monitoring intervals; adjusting steam curing parameters of the steam curing kiln according to the temperature information; and film covering maintenance is conducted, and prefabrication of the shield segment is completed. According to the shield segment prefabricating technology, a whole set of systematic shield segment prefabricating technology is formed from concrete pouring, temperature monitoring, steam curing and later film covering curing, the prefabricating process of the shield segment is optimized, and the quality of the prefabricated shield segment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated shield segment production, and in particular to a shield segment prefabrication method and a production line. Background Art

[0002] As a key structural component in tunnel engineering, the prefabrication process of shield segments has an important impact on the overall quality and construction efficiency of the project. With the acceleration of urban underground space development, shield construction has gradually become the mainstream, and the casting and maintenance technology of prefabricated shield segment molds has also developed accordingly. Traditional concrete curing methods mainly rely on natural curing or water curing, but these methods are difficult to meet the requirements of modern engineering for early strength and durability of concrete in terms of time and effect. Therefore, steam curing technology came into being. Steam curing accelerates the hydration reaction of concrete, improves early strength, and shortens the curing cycle through the action of high-temperature steam, and has gradually become an important means of prefabrication of shield segments.

[0003] Currently, steam curing technology for casting concrete in precast shield segment molds mainly relies on centralized steam curing kilns. Steam is provided by steam generators in these kilns and covers the surface of the concrete to promote hydration.

[0004] However, the existing technology usually uses a simple temperature monitoring method to monitor the overall curing temperature of concrete and supply steam according to the set curing time. In most cases, this method fails to effectively consider the temperature difference between different parts of the concrete, resulting in local overheating or overcooling during the curing process, resulting in excessive temperature differences, thereby increasing the risk of concrete cracking and deformation. Summary of the invention

[0005] The main purpose of the present invention is to propose a shield segment prefabrication method and production line, aiming to optimize the steam curing process during the production of prefabricated shield segments to reduce the risks of concrete cracking and deformation.

[0006] To achieve the above-mentioned purpose, the present invention provides a shield segment prefabrication method, which comprises:

[0007] pouring concrete into precast shield segment moulds;

[0008] Along the length direction of the prefabricated shield segment mold, a plurality of sequentially arranged temperature monitoring intervals are marked, and the plurality of temperature monitoring intervals jointly cover the concrete;

[0009] placing the prefabricated shield segment mold carrying the concrete into a steam curing kiln;

[0010] Performing steam curing on the concrete, and obtaining temperature information corresponding to the concrete using each of the temperature monitoring intervals;

[0011] According to each of the temperature information, adjusting the steam curing parameters of the steam curing kiln;

[0012] After the concrete completes the steam curing process, it is subjected to film curing to complete the prefabrication of the shield segment.

[0013] In one embodiment, the side wall of the prefabricated shield segment mold is provided with a plurality of reserved holes for forming segment hand holes, and the plurality of reserved holes are arranged at intervals along the length direction of the prefabricated shield segment mold;

[0014] The step of marking a plurality of sequentially arranged temperature monitoring intervals along the length direction of the prefabricated shield segment mold, wherein the plurality of temperature monitoring intervals jointly cover the concrete comprises:

[0015] Along the length direction of the prefabricated shield segment mold, the area between two adjacent reserved holes is marked as a temperature monitoring interval, and a plurality of temperature monitoring intervals arranged in sequence are obtained, and the plurality of temperature monitoring intervals jointly cover the concrete.

[0016] In one embodiment, the step of steam curing the concrete and obtaining the temperature information corresponding to the concrete using each temperature monitoring interval includes:

[0017] Inserting a temperature sensor into each of the reserved holes so that each of the temperature sensors extends into the prefabricated shield segment mold;

[0018] Obtaining temperature parameters of each temperature monitoring interval according to the temperature sensing values ​​of two adjacent temperature sensors;

[0019] The temperature information of the corresponding concrete is obtained by using the temperature parameter of each temperature monitoring interval.

[0020] In one embodiment, the step of obtaining the temperature parameter of each temperature monitoring interval according to the temperature sensing values ​​of two adjacent temperature sensors comprises:

[0021] Subtract the temperature values ​​obtained by two adjacent temperature sensors to obtain the temperature sensing value;

[0022] According to the temperature sensing value, the temperature parameter of each temperature monitoring interval is obtained.

[0023] In one embodiment, the step of obtaining the temperature parameter of each temperature monitoring interval according to the temperature sensing value includes:

[0024] Determine whether the temperature sensing value is less than or equal to 20°C;

[0025] If yes, the temperature parameter is 1;

[0026] If not, the temperature parameter is 0.

[0027] In one embodiment, the step of using the temperature parameter of each temperature monitoring interval to obtain the temperature information corresponding to the concrete includes:

[0028] When the temperature parameter is 1, the temperature information is to continue the steam curing;

[0029] When the temperature parameter is 0, the temperature information is to suspend the steam maintenance.

[0030] In one embodiment, the steam curing kiln includes a plurality of steam generators, and the number of the steam generators is consistent with the number of the temperature monitoring intervals and is arranged in a one-to-one correspondence;

[0031] The step of adjusting the steam curing parameters of the steam curing kiln according to each of the temperature information comprises:

[0032] According to each of the temperature information, the start and stop of each of the steam generators are controlled respectively to adjust the steam curing parameters of the steam curing kiln.

[0033] In one embodiment, after the concrete completes the steam curing process, it is subjected to film curing, and the steps of completing the prefabrication of the shield segment include:

[0034] transferring the concrete together with the prefabricated shield segment mold to a curing kiln;

[0035] The concrete is coated and cured on one side exposed from the prefabricated shield segment mold to complete the prefabrication of the shield segment.

[0036] In one embodiment, the step of coating and curing the side of the concrete exposed from the prefabricated shield segment mold to complete the prefabrication of the shield segment includes:

[0037] The side of the concrete exposed from the prefabricated shield segment mold is sprinkled with water and covered with a film for curing to complete the prefabrication of the shield segment.

[0038] The present invention also proposes a production line, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the shield segment prefabrication method as described above.

[0039] The technical solution of the present invention forms a complete set of shield segment prefabrication process from concrete pouring, temperature monitoring to steam curing, and then to the later film curing. The uniform pouring of concrete in the mold makes its structure complete, without voids and defects, thus laying a solid foundation for subsequent curing. On this basis, multiple temperature monitoring intervals are marked so that the temperature changes inside and on the surface of the concrete can be monitored in real time during the steam curing process, providing more comprehensive and accurate temperature data. This provides an effective basis for subsequent curing adjustments, so that the curing process can be flexibly adjusted according to the actual temperature conditions. In addition, during the steam curing stage, the temperature information obtained in real time makes the adjustment of steam curing parameters more accurate, which can effectively avoid the risk of concrete cracking and deformation caused by excessive temperature difference in traditional curing, thereby improving the overall quality and performance of concrete. The optimized steam curing process not only improves the early strength of concrete, but also shortens the curing cycle, significantly improves the efficiency and effect of concrete curing, optimizes the prefabrication process of shield segments, and makes the prefabricated shield segments have higher reliability and adaptability in actual engineering applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of a process flow of an embodiment of a shield segment prefabrication method provided by the present invention;

[0042] Figure 2 for Figure 1 A detailed flow chart of the steps of S40;

[0043] Figure 3 for Figure 2 A detailed flow chart of the step S42;

[0044] Figure 4 for Figure 1 A detailed flow chart of the steps of S60;

[0045] Figure 5 This is a schematic structural diagram of an embodiment of a production line provided by the present invention.

[0046] Description of Figure Numbers:

[0047] 1001, processing device; 1002, ROM; 1003, storage device; 1004, RAM; 1005, bus; 1006, I / O interface; 1007, input device; 1008, output device; 1009, communication device.

[0048] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0051] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] Currently, steam curing technology for casting concrete in precast shield segment molds mainly relies on centralized steam curing kilns. Steam is provided by steam generators in these kilns and covers the surface of the concrete to promote hydration.

[0053] However, existing technologies usually use simple temperature monitoring methods to monitor the overall curing temperature of concrete and supply steam according to the set curing time. In most cases, this method fails to effectively consider the temperature difference between different parts of the concrete, resulting in local overheating or overcooling during the curing process, causing excessive temperature differences, thereby increasing the risk of concrete cracking and deformation. Secondly, the traditional curing process lacks a real-time temperature monitoring and adjustment mechanism, and cannot flexibly adjust the curing parameters according to actual conditions, resulting in a waste of time and resources.

[0054] In order to solve this technical problem, the present invention proposes a shield segment prefabrication method and production line.

[0055] See also Figure 1 In one embodiment of the present invention, the shield segment prefabrication method comprises:

[0056] Step S10, pouring concrete into the prefabricated shield segment mold;

[0057] Step S20, marking and obtaining a plurality of sequentially arranged temperature monitoring intervals along the length direction of the prefabricated shield segment mold, wherein the plurality of temperature monitoring intervals jointly cover the concrete;

[0058] Step S30, placing the prefabricated shield segment mold carrying the concrete into a steam curing kiln;

[0059] Step S40, steam curing the concrete, and obtaining temperature information corresponding to the concrete using each temperature monitoring interval;

[0060] Step S50, adjusting the steam curing parameters of the steam curing kiln according to the temperature information;

[0061] Step S60: After the concrete completes the steam curing process, it is subjected to film curing to complete the prefabrication of the shield segment.

[0062] Specifically, the first step is to pour concrete into the prefabricated shield segment mold. The main body of this step is the operator or automated equipment in the shield segment prefabrication process. By precisely controlling the concrete pouring process, it is ensured that the concrete fills every corner of the mold to form a uniform concrete structure. This is the basis for subsequent steam curing to ensure the integrity and strength of the concrete.

[0063] After the concrete pouring is completed, the operator will mark multiple temperature monitoring intervals along the length of the mold. These temperature monitoring intervals are evenly distributed on the surface and inside of the concrete to ensure that all parts of the concrete are fully covered. The temperature distribution of the concrete during steam curing can be monitored in real time, and the temperature information of different parts can be obtained in time. The responsiveness to the temperature changes of the concrete is improved, thus laying the foundation for subsequent maintenance adjustments.

[0064] After marking the temperature monitoring interval, the mold carrying the concrete is placed in the steam curing kiln. This ensures that the mold can be heated evenly and maximizes the use of steam heat for the hydration reaction of the concrete. The steam curing process can accelerate the curing of the concrete and improve its early strength.

[0065] The concrete will be steam cured, and the real-time temperature information of each interval will be obtained through the pre-set temperature monitoring interval. This ensures more accurate temperature control of the concrete and avoids the risk of cracking or deformation caused by excessive temperature differences. In addition, the real-time acquisition of temperature information enables subsequent maintenance adjustments to be made based on actual conditions, further optimizing the maintenance process.

[0066] Based on the real-time temperature information collected from each temperature monitoring interval, the curing parameters of the steam curing kiln can be flexibly adjusted, including the temperature, humidity and flow rate of the steam, so as to ensure that the concrete maintains a uniform temperature distribution during the curing process. This measure can significantly improve the efficiency of steam curing and reduce concrete defects caused by uneven temperature in traditional methods.

[0067] Finally, after the steam curing process is completed, the concrete will be covered with film for curing. This stage ensures that the concrete maintains the appropriate humidity during the subsequent curing process and provides a guarantee for the prefabrication of the complete shield segment. Covering curing helps prevent moisture evaporation, thereby further enhancing the strength and durability of the concrete.

[0068] In the technical solution provided by the present invention, a complete set of shield segment prefabrication process is formed from concrete pouring, temperature monitoring to steam curing, and then to the later film curing. The uniform pouring of concrete in the mold makes its structure complete, without voids and defects, thus laying a solid foundation for subsequent curing. On this basis, multiple temperature monitoring intervals are marked so that the temperature changes inside and on the surface of the concrete can be monitored in real time during the steam curing process, providing more comprehensive and accurate temperature data. This provides an effective basis for subsequent curing adjustments, so that the curing process can be flexibly adjusted according to the actual temperature conditions. In addition, during the steam curing stage, the temperature information obtained in real time makes the adjustment of steam curing parameters more accurate, which can effectively avoid the risk of concrete cracking and deformation caused by excessive temperature difference in traditional curing, thereby improving the overall quality and performance of concrete. The optimized steam curing process not only improves the early strength of concrete, but also shortens the curing cycle, significantly improves the efficiency and effect of concrete curing, optimizes the prefabrication process of shield segments, and makes the prefabricated shield segments have higher reliability and adaptability in actual engineering applications.

[0069] In an embodiment of the present invention, the side wall of the prefabricated shield segment mold is provided with a plurality of reserved holes for forming segment hand holes, and the plurality of reserved holes are arranged at intervals along the length direction of the prefabricated shield segment mold;

[0070] The step of marking a plurality of sequentially arranged temperature monitoring intervals along the length direction of the prefabricated shield segment mold, wherein the plurality of temperature monitoring intervals jointly cover the concrete comprises:

[0071] Step S21: along the length direction of the prefabricated shield segment mold, mark the area between two adjacent reserved holes as a temperature monitoring interval, obtain a plurality of temperature monitoring intervals arranged in sequence, and the plurality of temperature monitoring intervals jointly cover the concrete.

[0072] Specifically, the side wall of the prefabricated shield segment mold is provided with a plurality of pre-set holes for forming segment hand holes, which not only facilitates the installation and maintenance of the segment in the later stage, but also provides an effective positioning reference for temperature monitoring. The plurality of pre-set holes are arranged at intervals along the length direction of the prefabricated shield segment mold to ensure that the monitoring points can be evenly distributed during the entire maintenance process.

[0073] When marking the temperature monitoring interval, by setting the temperature monitoring interval between adjacent reserved holes, multiple temperature monitoring intervals are arranged in sequence and cover all parts of the concrete together to ensure that the temperature of the concrete at each position can be monitored in real time during the entire pouring and curing process. It can not only improve the accuracy of monitoring, but also better reflect the temperature distribution inside the concrete, ensuring that the temperature information of each interval is obtained in time during the steam curing process. It provides an important basis for subsequent maintenance adjustments, helps to effectively avoid the risk of concrete cracking and deformation caused by excessive temperature differences, and further optimizes the curing effect and overall quality of the concrete.

[0074] Continue reading Figure 1 , and see Figure 2 In an embodiment of the present invention, the step of steam curing the concrete and obtaining the temperature information corresponding to the concrete by using each temperature monitoring interval includes:

[0075] Step S41, inserting a temperature sensor into each of the reserved holes so that each of the temperature sensors extends into the prefabricated shield segment mold;

[0076] Step S42, obtaining the temperature parameters of each temperature monitoring interval according to the temperature sensing values ​​of two adjacent temperature sensors;

[0077] Step S43: using the temperature parameters of each temperature monitoring interval to obtain the temperature information of the corresponding concrete.

[0078] Specifically, the operator inserts a temperature sensor into each reserved hole of the prefabricated shield segment mold. By extending the temperature sensor into the mold, it is ensured that it can directly or indirectly contact the concrete, and the real-time monitoring of the internal temperature of the concrete is achieved, so as to obtain accurate temperature data.

[0079] After inserting the temperature sensor, the temperature sensing value of each temperature sensor is collected in real time. By analyzing the temperature data of two adjacent temperature sensors, the temperature parameters of the temperature monitoring interval between them can be calculated to evaluate the temperature change of concrete at different locations, so as to have a more comprehensive understanding of the temperature distribution of concrete.

[0080] Finally, by fully monitoring the temperature of concrete, it is possible to avoid the risk of cracking or deformation caused by uneven temperature during the curing process, thereby improving the overall quality and strength of the concrete.

[0081] In an embodiment of the present invention, the step of obtaining the temperature parameter of each temperature monitoring interval according to the temperature sensing values ​​of two adjacent temperature sensors comprises:

[0082] Step S421, subtracting the temperature values ​​obtained by two adjacent temperature sensors to obtain the temperature sensing value;

[0083] Step S422: Obtain the temperature parameters of each temperature monitoring interval according to the temperature sensing value.

[0084] Specifically, the temperature values ​​measured by two adjacent temperature sensors are calculated. The temperature sensing value can be obtained by calculating the difference between the temperatures measured by temperature sensor A and temperature sensor B. This process helps to identify the temperature change of concrete between the two sensors and provides basic data for the subsequent calculation of temperature parameters.

[0085] After obtaining the temperature sensing values, the temperature parameters of each temperature monitoring interval are calculated based on these difference data. The temperature parameters in the monitoring interval are estimated by, for example, linear interpolation or weighted average to provide a more accurate temperature representative value. This process ensures that the temperature changes in each area of ​​the concrete can be fully reflected, promoting effective management of the concrete curing process.

[0086] Continue reading Figure 1 , and see Figure 3 In an embodiment of the present invention, the step of obtaining the temperature parameter of each temperature monitoring interval according to the temperature sensing value includes:

[0087] Step S423, determining whether the temperature sensing value is less than or equal to 20°C;

[0088] Step S424: If yes, the temperature parameter is 1;

[0089] Step S425: If not, the temperature parameter is 0.

[0090] Specifically, the calculated temperature sensing value is judged. To determine the state of the concrete in the temperature monitoring interval, and provide a basis for subsequent curing treatment. If the temperature sensing value is less than or equal to 20°C, the temperature parameter of the temperature monitoring interval is set to 1. This indicates that the temperature of the concrete in this interval is normal or too low, and steam curing needs to continue, and the concrete may need to be additionally heated to ensure the hydration and strength of the concrete. If the temperature sensing value is greater than 20°C, the temperature parameter of the temperature monitoring interval is set to 0. This means that the temperature in this interval is in a relatively suitable range, and the curing process of the concrete can proceed normally without additional temperature adjustment measures. The steam generator can be temporarily shut down to save energy and reduce production costs.

[0091] It should be noted that the steam generator is prior art.

[0092] In an embodiment of the present invention, the step of using the temperature parameter of each temperature monitoring interval to obtain the temperature information corresponding to the concrete includes:

[0093] Step S431: when the temperature parameter is 1, the temperature information is to continue the steam curing;

[0094] Step S432: When the temperature parameter is 0, the temperature information is to suspend the steam maintenance.

[0095] Specifically, when the temperature parameter of a temperature monitoring interval is set to 1, the concrete temperature in this interval is low. Steam curing will continue to ensure that the concrete undergoes hydration reaction under suitable temperature conditions to promote the development of its strength and durability. This prevents insufficient hydration of the concrete due to low temperature, thereby ensuring the quality of the concrete.

[0096] When the temperature parameter of a temperature monitoring interval is set to 0, it means that the concrete temperature in this area is within the appropriate range, and the system will instruct to suspend steam curing. At this point, the concrete is in a good curing state, and further steam curing may cause excessive temperature or unnecessary energy waste. Suspending steam curing helps avoid cracking or other quality problems that may occur due to overheating of the concrete.

[0097] In an embodiment of the present invention, the steam curing kiln comprises a plurality of steam generators, and the number of the steam generators is consistent with the number of the temperature monitoring intervals and is arranged in a one-to-one correspondence;

[0098] The step of adjusting the steam curing parameters of the steam curing kiln according to each of the temperature information comprises:

[0099] Step S51, according to each of the temperature information, respectively controlling the start and stop of each of the steam generators to adjust the steam curing parameters of the steam curing kiln.

[0100] Specifically, the steam curing kiln includes a plurality of steam generators, the number of which is consistent with the number of temperature monitoring intervals, and they are arranged in a one-to-one correspondence, so as to ensure that each temperature monitoring interval has a dedicated steam generator for temperature control, thereby achieving more accurate temperature management.

[0101] According to the temperature information obtained in each temperature monitoring interval, the start and stop status of the corresponding steam generator is intelligently controlled: when the temperature information indicates that steam curing needs to continue (such as the temperature parameter is 1), the corresponding steam generator will be activated to continuously provide steam, maintain a suitable temperature, and ensure that the hydration process of the concrete proceeds smoothly. When the temperature information indicates that steam curing can be suspended (such as the temperature parameter is 0), the corresponding steam generator will stop working to avoid overheating and waste of energy.

[0102] Continue reading Figure 1 , and see Figure 4 In an embodiment of the present invention, after the concrete completes the steam curing process, it is subjected to film curing, and the steps of completing the prefabrication of the shield segment include:

[0103] Step S61, transferring the concrete and the prefabricated shield segment mold to a curing kiln;

[0104] Step S62, coating and curing the side of the concrete exposed from the prefabricated shield segment mold to complete the prefabrication of the shield segment.

[0105] Specifically, the steam-cured concrete will be transferred to the curing kiln together with the prefabricated shield segment molds. Ensure that the concrete will not be damaged during the transfer process and can maintain optimal curing conditions. The temperature and humidity in the curing kiln should be kept within an appropriate range to promote the subsequent curing and strength improvement of the concrete.

[0106] The part of the concrete exposed on one side of the mold is covered with film to maintain its humidity and prevent water evaporation. Covering and curing can ensure that the concrete is evenly heated and moistened during the curing process, thereby improving its ultimate strength and durability.

[0107] In an embodiment of the present invention, the step of coating and curing the side of the concrete exposed from the prefabricated shield segment mold to complete the prefabrication of the shield segment includes:

[0108] Step S63, watering and covering with film for curing on the side of the concrete exposed from the prefabricated shield segment mold to complete the prefabrication of the shield segment.

[0109] Specifically, before covering, firstly, water the exposed part of the concrete. This increases the humidity of the concrete surface, prevents it from losing water quickly in a dry environment, ensures the smooth progress of the hydration reaction, and thus improves the strength and durability of the concrete. After watering, the protective film is promptly covered on the concrete surface after watering. The protective film can not only maintain the humidity of the concrete, but also help to maintain a stable temperature, preventing the surface temperature of the concrete from being too high or too low due to changes in the external environment, thereby affecting the curing process.

[0110] Please continue reading Figures 1 to 4 , and see Figure 5 The present invention also proposes a production line, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the shield segment prefabrication method as described above.

[0111] Specifically, the production line includes: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the shield segment prefabrication method in the above-mentioned embodiment one.

[0112] Reference below Figure 5 , which shows a schematic structural diagram of a production line suitable for implementing an embodiment of the present application. Figure 5 The production line shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0113] like Figure 5 As shown, the production line may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the production line are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the production line to communicate with other devices wirelessly or wired to exchange data. Although the figure shows a production line with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or have alternatively.

[0114] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0115] It should be understood that the various parts disclosed in this application can be implemented with hardware, software, firmware or a combination thereof. In the description of the above-mentioned embodiments, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples. The specific steps of the shield segment prefabrication method refer to the above-mentioned embodiments. Since this production line adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Compared with the prior art, the beneficial effects of the production line provided by the present application are the same as the beneficial effects of the shield segment prefabrication method provided by the above-mentioned embodiments, and the other technical features in the production line are the same as the features disclosed in the previous embodiment method, which will not be repeated here.

[0116] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A shield segment prefabrication method, characterized in that: The shield segment prefabrication method comprises: pouring concrete into precast shield segment moulds; Along the length direction of the prefabricated shield segment mold, a plurality of sequentially arranged temperature monitoring intervals are marked, and the plurality of temperature monitoring intervals jointly cover the concrete; placing the prefabricated shield segment mold carrying the concrete into a steam curing kiln; Performing steam curing on the concrete, and obtaining temperature information corresponding to the concrete using each of the temperature monitoring intervals; According to each of the temperature information, adjusting the steam curing parameters of the steam curing kiln; After the concrete has completed the steam curing process, it is subjected to film curing to complete the prefabrication of the shield segment.

2. The shield segment prefabrication method according to claim 1, characterized in that: The side wall of the prefabricated shield segment mold is provided with a plurality of reserved holes for forming segment hand holes, and the plurality of reserved holes are arranged at intervals along the length direction of the prefabricated shield segment mold; The step of marking a plurality of sequentially arranged temperature monitoring intervals along the length direction of the prefabricated shield segment mold, wherein the plurality of temperature monitoring intervals jointly cover the concrete comprises: Along the length direction of the prefabricated shield segment mold, the area between two adjacent reserved holes is marked as a temperature monitoring interval, and a plurality of temperature monitoring intervals arranged in sequence are obtained, and the plurality of temperature monitoring intervals jointly cover the concrete.

3. The shield segment prefabrication method according to claim 2, characterized in that: The step of steam curing the concrete and obtaining the temperature information corresponding to the concrete by using each temperature monitoring interval comprises: Inserting a temperature sensor into each of the reserved holes so that each of the temperature sensors extends into the prefabricated shield segment mold; Obtaining temperature parameters of each temperature monitoring interval according to the temperature sensing values ​​of two adjacent temperature sensors; The temperature information of the corresponding concrete is obtained by using the temperature parameter of each temperature monitoring interval.

4. The shield segment prefabrication method according to claim 3, characterized in that: The step of obtaining the temperature parameter of each temperature monitoring interval according to the temperature sensing values ​​of two adjacent temperature sensors comprises: Subtract the temperature values ​​obtained by two adjacent temperature sensors to obtain the temperature sensing value; According to the temperature sensing value, the temperature parameter of each temperature monitoring interval is obtained.

5. The shield segment prefabrication method according to claim 4, characterized in that: The step of obtaining the temperature parameter of each temperature monitoring interval according to the temperature sensing value comprises: Determine whether the temperature sensing value is less than or equal to 20°C; If yes, the temperature parameter is 1; If not, the temperature parameter is 0.

6. The shield segment prefabrication method according to claim 5, characterized in that: The step of using the temperature parameters of each temperature monitoring interval to obtain the temperature information corresponding to the concrete comprises: When the temperature parameter is 1, the temperature information is to continue the steam curing; When the temperature parameter is 0, the temperature information is to suspend the steam maintenance.

7. The shield segment prefabrication method according to claim 6, characterized in that: The steam curing kiln comprises a plurality of steam generators, the number of the steam generators being consistent with the number of the temperature monitoring intervals and being arranged in one-to-one correspondence; The step of adjusting the steam curing parameters of the steam curing kiln according to each of the temperature information comprises: According to each of the temperature information, the start and stop of each of the steam generators are controlled respectively to adjust the steam curing parameters of the steam curing kiln.

8. The shield segment prefabrication method according to any one of claims 1 to 7, characterized in that: After the concrete has completed the steam curing process, the concrete is subjected to film curing, and the steps of completing the prefabrication of the shield segment include: transferring the concrete together with the prefabricated shield segment mold to a curing kiln; The concrete is coated and cured on one side exposed from the prefabricated shield segment mold to complete the prefabrication of the shield segment.

9. The shield segment prefabrication method according to claim 8, characterized in that: The step of coating and curing the side of the concrete exposed from the prefabricated shield segment mold to complete the prefabrication of the shield segment comprises: The side of the concrete exposed from the prefabricated shield segment mold is sprinkled with water and covered with a film for curing to complete the prefabrication of the shield segment.

10. A production line, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the shield segment prefabrication method according to any one of claims 1 to 9.

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