Intelligent control system for excessive consumption of sprayed concrete of tunnel cave wall

Abstract

The invention belongs to the technical field of tunnel hole wall sprayed concrete, and particularly relates to a tunnel hole wall sprayed concrete over-consumption intelligent control system which comprises a data acquisition module, a data processing module, a control module, a database and a man-machine interaction module, and the data acquisition module further comprises a pressure sensor, a flow sensor and a displacement sensor. According to the intelligent control system for the excessive consumption of the sprayed concrete on the tunnel wall, the data acquisition module monitors the working state of spraying equipment, the concrete dosage and the spraying pressure in real time through various sensors, and the controllability and safety of the construction process are ensured; the data processing module adopts a big data analysis and machine learning algorithm, can accurately identify the reasons and specific conditions of overconsumption, and is helpful for timely finding problems and taking measures; and the control module automatically adjusts working parameters of the spraying equipment according to a data processing result, optimizes the concrete spraying amount, reduces material waste and improves the construction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel wall shotcrete, and in particular to an intelligent control system for over-consumption of tunnel wall shotcrete. Background Art

[0002] In the field of tunnel construction in my country, shotcrete, as an important means of initial support, has been widely used in various tunnel projects. However, in the actual construction process, the over-consumption of shotcrete has become increasingly prominent and has become a thorny problem faced by the industry; first, the technical levels of operators vary, and some construction workers operate improperly during the shotcrete process, resulting in difficulty in accurately controlling the amount. Secondly, the aging and wear of construction equipment affect the uniformity and spraying effect of shotcrete, which in turn leads to an increase in the amount. This over-consumption phenomenon not only increases the cost of tunnel construction, but may also have an adverse effect on the construction progress and quality, so there is a need for an intelligent control system for over-consumption of tunnel wall shotcrete. Summary of the invention

[0003] Based on the existing technical problems, the present invention proposes an intelligent control system for over-consumption of shotcrete on the tunnel wall.

[0004] The present invention proposes an intelligent control system for over-consumption of shotcrete on a tunnel wall, comprising a data acquisition module, a data processing module, a control module, a database and a human-computer interaction module. The data acquisition module also comprises a pressure sensor, a flow sensor and a displacement sensor. The data acquisition module realizes the action of transmitting the collected data of the pressure sensor, the flow sensor and the displacement sensor to the data processing module.

[0005] The data processing module uses big data analysis and machine learning algorithms to process the collected data and identify abnormal situations and causes of overconsumption.

[0006] The control module adjusts the working parameters of the spraying equipment and optimizes the concrete spraying amount according to the data processing results. The spraying equipment includes a spray head, and one end of a plurality of the spray heads are arranged in an umbrella shape.

[0007] The human-computer interaction module provides a friendly user interface and displays real-time data and control suggestions for reference by operators.

[0008] The database stores historical data and analysis results. The historical storage data includes the designed injection volume V 设计 , the calculation formula of design injection volume: V 设计 =A 洞壁 ·h 设计 ·ρ 混凝土 , where A 洞壁 is the area of ​​the tunnel wall, h设计 is the designed spray thickness, ρ 混凝土 It is the density of concrete, and the stored data in the database provides comparative analysis for the data processing module.

[0009] Preferably, the data processing module calculates the actual injection volume V according to the data collected by the data collection module. 实际 :

[0010] Among them, Q 实际i is the actual injection volume of the ith nozzle measured by the flow sensor, t i is the actual spraying time of the i-th nozzle measured by the timer.

[0011] Preferably, the data processing module calculates the average injection pressure P according to the data collected by the data collection module:

[0012] Where m is the mass flow rate of a single nozzle, ρ is the density of concrete, v is the velocity of concrete leaving the nozzle, and g is the acceleration due to gravity.

[0013] Preferably, the actual injection amount V 实际 and the designed injection volume V 设计 Comparative analysis is performed to obtain the excess consumption V 超耗 :V 超耗 =V 实际 -V 设计 ;

[0014] When the actual injection volume V 实际 Exceeding the designed injection volume V 设计 , there is overconsumption, which can be reduced by adjusting the injection pressure.

[0015] Preferably, the spraying equipment also includes a mechanical arm, a clamping portion of the mechanical arm is clamped with a fixed sleeve, the inner wall of the fixed sleeve is rotatably connected to an adjusting shaft via a bearing, one end of the fixed sleeve is also rotatably connected to an annular material storage frame via a bearing, the inner wall of the annular material storage frame is rotatably connected to the circular arc surface of the adjusting shaft, and first sealing rings are fixedly installed on the inner walls at both ends of the annular material storage frame, and the surfaces of the two first sealing rings are pressed against the circular arc surface of the adjusting shaft.

[0016] Preferably, a clamping groove is provided at one end of the adjusting shaft, a feeding hole is provided on the inner wall of the clamping groove, a trapezoidal connecting groove is provided in a circular array on the inner bottom wall of the feeding hole, the trapezoidal connecting groove is located in the middle of the two first sealing rings, an arc-shaped connecting groove is provided in a circular array on the inner side wall of the annular material storage frame, four of the arc-shaped connecting grooves correspond to and are fixedly connected with the four trapezoidal connecting grooves, a second sealing ring is fixedly installed on the inner side wall of the clamping groove, and a conveying pipe is also rotatably connected to the inner side wall of the clamping groove through a bearing, the arc surface of the conveying pipe is pressed against the surface of the second sealing ring, and a hose is fixedly installed on one end of the conveying pipe.

[0017] Preferably, a connecting mounting plate is fixedly installed on the front arc surface of the fixed sleeve, and the two connecting mounting plates are symmetrically arranged. An adjusting motor is fixedly installed on the surface of one of the connecting mounting plates, and a rotating shaft is fixedly installed on the output end of the adjusting motor through a coupling, a small conical bevel gear is fixedly installed on one end of the rotating shaft, and a large conical bevel gear is fixedly installed on the arc surface of one end of the adjusting shaft, and the gear teeth of the small conical bevel gear are meshed with the tooth grooves of the large conical bevel gear.

[0018] Preferably, a rotating motor is fixedly mounted on the surface of another connecting mounting plate, a bevel gear shaft is fixedly mounted on the output end of the rotating motor, a small bevel gear is fixedly mounted on one end of the bevel gear shaft, and a large bevel gear is fixedly mounted on the outer arc surface of the annular material storage frame, and the gear teeth of the small bevel gear are meshed with the tooth grooves of the large bevel gear.

[0019] Preferably, a first annular hinge seat is fixedly installed on the back of the annular material storage frame, the inner wall of the first annular hinge seat is rotatably connected to the circular arc surface of the adjusting shaft, the surface of the first annular hinge seat is hinged with a long connecting rod through a pin shaft, and a plurality of the long connecting rods are distributed in an annular array, and the middle surface of each long connecting rod is rotatably connected to a short connecting rod through a pin shaft, and one end of a plurality of the short connecting rods is hinged with a second annular hinge seat through a pin shaft, the circular arc surface of the adjusting shaft is threadedly connected with an adjusting tube, and the circular arc surface of the adjusting tube is rotatably connected to the inner wall of the second annular hinge seat through a bearing.

[0020] Preferably, a protective cloth is fixedly installed on the outer surfaces of the plurality of long connecting rods, the middle part of the protective cloth is fixedly installed on the back side of the annular material storage frame, the top end of each of the long connecting rods is fixedly installed on the surface of each of the nozzles, a flexible connecting pipe is fixedly installed on the feed end of the nozzle, and the feed ends of the plurality of flexible connecting pipes are fixedly connected to the inner wall of the annular material storage frame.

[0021] The beneficial effects of the present invention are:

[0022] 1. The data acquisition module monitors the working status, concrete dosage and injection pressure of the spraying equipment in real time through various sensors to ensure the controllability and safety of the construction process; the data processing module uses big data analysis and machine learning algorithms to accurately identify the causes and specific circumstances of overconsumption, which helps to find problems in time and take measures; the control module automatically adjusts the working parameters of the spraying equipment according to the data processing results, optimizes the concrete injection volume, reduces material waste, and improves construction efficiency; through the collaborative work of data acquisition, processing and control modules, the system can achieve comprehensive monitoring and automatic control of the spraying concrete construction process, improving the stability and reliability of the system; the application of the system can significantly improve construction quality and efficiency, reduce material waste, reduce construction costs, and ensure that the project quality meets the design requirements; the dosage of sprayed concrete is controlled within the design range, material waste is reduced by 15%, and construction efficiency is increased by 10%.

[0023] 2. By setting up the spraying equipment, umbrella-shaped adjustable spraying and circular rotating spraying are realized during the spraying, so that the annular ring composed of multiple nozzles can ensure that the concrete is sprayed evenly onto the inner wall of the tunnel, avoiding the problems of uneven thickness and incomplete coverage that may be caused by single-point spraying; using multiple nozzles at the same time can greatly improve the spraying efficiency and shorten the construction period, especially in large-scale tunnel projects; by adjusting the opening and closing of the umbrella-shaped mechanism, it can easily adapt to tunnel sections of different diameters and shapes to ensure the uniformity of concrete spraying; controlling the annular spraying and circular motion of the nozzle helps to reduce the rebound of concrete and improve the utilization rate of materials; annular spraying and circular motion can make the concrete layer denser, reduce cracks and holes, and improve the coating quality and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an intelligent control system for over-consumption of shotcrete on the tunnel wall;

[0025] Figure 2 A three-dimensional diagram of the protective cloth structure of an intelligent control system for over-consumption of shotcrete on the tunnel wall;

[0026] Figure 3 It is a three-dimensional diagram of the long connecting rod structure of an intelligent control system for over-consumption of shotcrete on the tunnel wall;

[0027] Figure 4 It is a three-dimensional diagram of the arc-shaped connection groove structure of an intelligent control system for over-consumption of shotcrete on the tunnel wall;

[0028] Figure 5 It is an exploded diagram of the annular material storage frame structure of an intelligent control system for over-consumption of shotcrete on the tunnel wall;

[0029] Figure 6It is a cross-sectional view of the regulating shaft structure of an intelligent control system for over-consumption of shotcrete on the tunnel wall;

[0030] Figure 7 This is a flow chart of an intelligent control system for over-consumption of shotcrete on the tunnel wall.

[0031] In the figure: 1. Data acquisition module; 2. Data processing module; 3. Control module; 4. Database; 5. Human-computer interaction module; 6. Pressure sensor; 7. Flow sensor; 8. Displacement sensor; 9. Spraying equipment; 91. Spray head; 92. Robotic arm; 93. Fixed sleeve; 94. Adjustment shaft; 95. Annular material storage frame; 96. First sealing ring; 97. Clamping groove; 98. Feeding hole; 99. Trapezoidal connecting groove; 910. Arc connecting groove; 911. Second sealing ring ; 912, conveying pipe; 913, hose; 914, connecting mounting plate; 915, adjusting motor; 916, rotating shaft; 917, small conical bevel gear; 918, large conical bevel gear; 919, rotating motor; 920, bevel gear shaft; 921, small bevel gear; 922, large bevel gear; 923, first annular hinge seat; 924, long connecting rod; 925, short connecting rod; 926, second annular hinge seat; 927, adjusting pipe; 928, protective cloth; 929, flexible connecting pipe. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figure 1-Figure 7 , an intelligent control system for over-consumption of shotcrete on a tunnel wall, including a data acquisition module 1, a data processing module 2, a control module 3, a database 4 and a human-computer interaction module 5. The data acquisition module 1 also includes a pressure sensor 6, a flow sensor 7 and a displacement sensor 8. The data acquisition module 1 realizes the action of transmitting the collected data of the pressure sensor 6, the flow sensor 7 and the displacement sensor 8 to the data processing module 2.

[0034] Data processing module 2 uses big data analysis and machine learning algorithms to process the collected data and identify abnormal conditions and causes of overconsumption; data processing module 2 calculates the actual injection volume V based on the data collected by data acquisition module 1. 实际 :

[0035] Among them, Q 实际i is the actual injection volume of the i-th nozzle 91 measured by the flow sensor 7, t i is the actual spraying time of the i-th nozzle 91 measured by the timer.

[0036] The data processing module 2 calculates the average injection pressure P according to the data collected by the data collection module 1:

[0037] Wherein, m is the mass flow rate of a single nozzle 91, ρ is the density of concrete, v is the velocity of concrete leaving the nozzle, and g is the acceleration due to gravity.

[0038] The control module 3 adjusts the working parameters of the injection equipment 9 and optimizes the concrete injection amount according to the data processing result. The injection equipment 9 includes a nozzle 91, and one end of the multiple nozzles 91 are arranged in an umbrella shape; the injection equipment 9 also includes a mechanical arm 92, and the clamping part of the mechanical arm 92 is clamped with a fixed sleeve 93, the inner wall of the fixed sleeve 93 is rotatably connected to an adjusting shaft 94 through a bearing, and one end of the fixed sleeve 93 is also rotatably connected to an annular storage frame 95 through a bearing, the inner wall of the annular storage frame 95 is rotatably connected to the arc surface of the adjusting shaft 94, and the inner walls of both ends of the annular storage frame 95 are fixedly installed with first sealing rings 96, and the surfaces of the two first sealing rings 96 are squeezed against the arc surface of the adjusting shaft 94.

[0039] Specifically, during the spraying operation, the mechanical arm 92 is used to drive the fixed sleeve 93 to move and adjust the direction of the spraying. During the spraying, the sprayed concrete is controlled to enter the annular storage frame 95 to achieve diversion spraying. The two first sealing rings 96 at both ends are used to achieve the sealing effect of the adjustment shaft 94 and the annular storage frame 95 to prevent leakage during the rotation of the adjustment shaft 94 and the annular storage frame 95.

[0040] A clamping groove 97 is provided at one end of the adjusting shaft 94, a feeding hole 98 is provided on the inner wall of the clamping groove 97, a trapezoidal connecting groove 99 is provided in a circular array on the inner bottom wall of the feeding hole 98, the trapezoidal connecting groove 99 is located in the middle of the two first sealing rings 96, an arc-shaped connecting groove 910 is provided in a circular array on the inner side wall of the annular storage frame 95, four arc-shaped connecting grooves 910 correspond to and are fixedly connected with the four trapezoidal connecting grooves 99, a second sealing ring 911 is fixedly installed on the inner side wall of the clamping groove 97, and a conveying pipe 912 is also rotatably connected to the inner side wall of the clamping groove 97 through a bearing, the arc surface of the conveying pipe 912 is pressed against the surface of the second sealing ring 911, and a hose 913 is fixedly installed on one end of the conveying pipe 912.

[0041] Specifically implemented in this way, the design of the feed hole 98 and the trapezoidal connecting groove 99 allows the concrete material to enter the annular storage frame 95 more smoothly, reducing the resistance during the transportation process; the use of the second sealing ring 911 further enhances the sealing between the clamping groove 97 and the delivery pipe 912, preventing concrete from leaking during the transportation process, and facilitating the delivery pipe 912 to fix the adjusting shaft 94 while also being able to rotate and drive the sealing effect, so that the sprayed concrete can be input into the interior of the annular storage frame 95 through the delivery pipe 912 during operation, and both the adjusting shaft 94 and the annular storage frame 95 can be driven to rotate and also have a sealing effect.

[0042] A connecting mounting plate 914 is fixedly installed on the front arc surface of the fixed sleeve 93, and the two connecting mounting plates 914 are symmetrically arranged. An adjusting motor 915 is fixedly installed on the surface of one connecting mounting plate 914, and a rotating shaft 916 is fixedly installed on the output end of the adjusting motor 915 through a coupling. A small conical bevel tooth 917 is fixedly installed on one end of the rotating shaft 916, and a large conical bevel tooth 918 is fixedly installed on the arc surface of one end of the adjusting shaft 94, and the gear teeth of the small conical bevel tooth 917 are meshed with the tooth grooves of the large conical bevel tooth 918.

[0043] Specifically, the adjusting motor 915 is used to drive the rotating shaft 916 to rotate, thereby driving the small conical bevel gear 917 to rotate, thereby driving the large conical bevel gear 918 to rotate, and then controlling the rotation of the adjusting shaft 94 to adjust the annular diameter of the spray of multiple nozzles 91 and enhance the effect of uniform spraying.

[0044] A rotating motor 919 is fixedly mounted on the surface of another connecting mounting plate 914, a bevel gear shaft 920 is fixedly mounted on the output end of the rotating motor 919, a small bevel gear 921 is fixedly mounted on one end of the bevel gear shaft 920, and a large bevel gear 922 is fixedly mounted on the outer arc surface of the annular material storage frame 95, and the gear teeth of the small bevel gear 921 are meshed with the tooth grooves of the large bevel gear 922.

[0045] Specifically, the rotating motor 919 drives the bevel gear shaft 920 to rotate, controls the rotation of the small bevel gear 921, and then realizes the rotational movement adjustment of the large bevel gear 922, so as to facilitate the control of the rotational movement of the annular material storage frame 95 during the injection, and drives the nozzle 91 arranged on the surface to realize the effect of circular rotation injection, thereby further enhancing the injection uniformity.

[0046] A first annular hinged seat 923 is fixedly installed on the back of the annular storage frame 95, and the inner wall of the first annular hinged seat 923 is rotatably connected to the arc surface of the adjusting shaft 94. A long connecting rod 924 is hinged on the surface of the first annular hinged seat 923 through a pin shaft, and multiple long connecting rods 924 are distributed in an annular array. The middle surface of each long connecting rod 924 is rotatably connected to a short connecting rod 925 through a pin shaft, and one end of multiple short connecting rods 925 is hinged to a second annular hinged seat 926 through a pin shaft. An adjusting tube 927 is threadedly connected to the arc surface of the adjusting shaft 94, and the arc surface of the adjusting tube 927 is rotatably connected to the inner wall of the second annular hinged seat 926 through a bearing.

[0047] Specifically implemented in this way, the design of the first annular hinge seat 923 and the second annular hinge seat 926, and the annular array distribution of the long connecting rod 924 and the short connecting rod 925 provide a solid support structure for the entire system and increase the stability of the system; by controlling the rotation of the adjustment shaft 94, the adjustment tube 927 is moved, and then the multiple long connecting rods 924 are all swung with the first annular hinge seat 923, and the annular diameter formed by one end of the multiple long connecting rods 924 is controlled to increase or decrease.

[0048] A protective cloth 928 is fixedly installed on the outer surface of multiple long connecting rods 924, the middle part of the protective cloth 928 is fixedly installed on the back side of the annular material storage frame 95, the top end of each long connecting rod 924 is fixedly installed on the surface of each nozzle 91 respectively, and a flexible connecting pipe 929 is fixedly installed on the feed end of the nozzle 91, and the feed ends of multiple flexible connecting pipes 929 are fixedly connected to the inner wall of the annular material storage frame 95.

[0049] Specifically, the annular diameter formed by the long connecting rod 924 is adjusted, and then the injection diameter formed by the multiple nozzles 91 connected to the end of the long connecting rod 924 is increased or decreased, thereby realizing the long umbrella-shaped adjustment injection of the multiple nozzles 91. The umbrella-shaped mechanism is opened and the annular diameter of the nozzle 91 is increased, so that the injection range can be expanded to cover a larger area of ​​the inner wall of the tunnel; the umbrella-shaped mechanism is closed and the annular diameter of the nozzle 91 is reduced, so that the injection range can be narrowed, which is suitable for fine injection of a smaller area; the injection range can be adjusted according to the different sizes and shapes of the tunnel section to improve the adaptability of the construction; by adjusting the annular diameter, the thickness of the concrete layer can be ensured to be uniform to avoid the situation of uneven thickness; rapid adjustment of the injection range can improve the construction efficiency, especially in situations where a large area needs to be covered quickly; appropriately narrowing the injection range can reduce the rebound of the concrete and improve the utilization rate of the material.

[0050] Database 4 stores historical data and analysis results. The historical storage data includes the design injection volume V 设计 , the calculation formula of design injection volume: V 设计 =A 洞壁 ·h设计 ·ρ 混凝土 , where A 洞壁 is the area of ​​the tunnel wall, h 设计 is the designed spray thickness, ρ 混凝土 is the density of concrete, and the data stored in the database 4 provides the data processing module 2 with a comparative analysis action; by converting the measured actual injection volume V 实际 and the designed injection volume V 设计 Comparative analysis is performed to obtain the excess consumption V 超耗 :V 超耗 =V 实际 -V 设计 ;

[0051] When the actual injection volume V 实际 Exceeding the designed injection volume V 设计 , there is overconsumption, which can be reduced by adjusting the injection pressure.

[0052] The human-computer interaction module 5 provides a friendly user interface, displays real-time data and control suggestions for operators' reference.

[0053] The data acquisition module 1 monitors the working status, concrete consumption and injection pressure of the injection equipment 9 in real time through various sensors to ensure the controllability and safety of the construction process; the data processing module 2 uses big data analysis and machine learning algorithms to accurately identify the causes and specific circumstances of overconsumption, which helps to promptly discover problems and take measures; the control module 3 automatically adjusts the working parameters of the injection equipment 9 according to the data processing results, optimizes the concrete injection volume, reduces material waste, and improves construction efficiency; through the coordinated work of the data acquisition, processing and control modules 3, the system can achieve comprehensive monitoring and automatic control of the injection concrete construction process, improving the stability and reliability of the system; the application of the system can significantly improve construction quality and efficiency, reduce material waste, and reduce construction costs, while ensuring that the project quality meets the design requirements; the amount of injection concrete is controlled within the design range, material waste is reduced by 15%, and construction efficiency is increased by 10%.

[0054] By setting up the spraying device 9, umbrella-shaped adjustable spraying and circular rotating spraying are realized during spraying, so that the annular ring composed of multiple nozzles 91 can ensure that the concrete is evenly sprayed onto the inner wall of the tunnel, avoiding the problems of uneven thickness and incomplete coverage that may be caused by single-point spraying; using multiple nozzles 91 at the same time can greatly improve the spraying efficiency and shorten the construction period, especially in large-scale tunnel projects; by adjusting the opening and closing of the umbrella-shaped mechanism, it can easily adapt to tunnel sections of different diameters and shapes to ensure the uniformity of concrete spraying; controlling the annular spraying and circular motion of the nozzle 91 helps to reduce the rebound of concrete and improve the utilization rate of materials; the annular spraying and circular motion can make the concrete layer denser, reduce cracks and holes, and improve the coating quality and durability.

[0055] Working principle of spraying: During concrete spraying, the adjustment shaft 94 is first controlled to rotate according to the tunnel environment, driving the adjustment tube 927 to move and adjusting the diameter of the umbrella-shaped ring. During spraying, the ring storage frame 95 is driven to rotate in a circle to drive multiple nozzles 91 to perform circular rotation spraying. While spraying, the data acquisition module 1 is used to collect data in real time and transmit it to the data processing module 2 for data analysis, processing and calculation to obtain a comparative analysis of the real-time spraying amount and the designed spraying amount. According to the excess consumption obtained by the analysis, each spraying parameter is automatically adjusted, such as spraying pressure adjustment, to achieve intelligent control of excessive energy consumption.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent control system for over-consumption of shotcrete on tunnel wall, characterized in that: The invention comprises a data acquisition module (1), a data processing module (2), a control module (3), a database (4) and a human-computer interaction module (5); the data acquisition module (1) further comprises a pressure sensor (6), a flow sensor (7) and a displacement sensor (8); the data acquisition module (1) realizes the action of transmitting the collected data of the pressure sensor (6), the flow sensor (7) and the displacement sensor (8) to the data processing module (2); The data processing module (2) uses big data analysis and machine learning algorithms to process the collected data and identify abnormal situations and causes of overconsumption; The control module (3) adjusts the working parameters of the spraying device (9) according to the data processing result to optimize the concrete spraying amount, wherein the spraying device (9) comprises a spray head (91), and one end of a plurality of the spray heads (91) are arranged in an umbrella shape; The human-machine interaction module (5) provides a friendly user interface and displays real-time data and control suggestions for reference by operators; The database (4) stores historical data and analysis results. The historical storage data includes the designed injection volume V 设计 , the calculation formula for the design injection volume: V 设计 =A 洞壁 ·h 设计 ·ρ 混凝土 , where A 洞壁 is the area of ​​the tunnel wall, h 设计 is the designed spray thickness, ρ 混凝土 It is the density of concrete, and the stored data in the database (4) provides the data processing module (2) with a comparative analysis action.

2. According to claim 1, an intelligent control system for over-consumption of shotcrete on tunnel wall, characterized in that: The data processing module (2) calculates the actual injection volume V according to the data collected by the data collection module (1). 实际 : Among them, Q 实际i is the actual injection volume of the i-th nozzle (91) measured by the flow sensor (7), t i is the actual spraying time of the i-th nozzle (91) measured by the timer.

3. According to claim 1, an intelligent control system for over-consumption of shotcrete on tunnel wall, characterized in that: The data processing module (2) calculates the average injection pressure P based on the data collected by the data collection module (1): Wherein, m is the mass flow rate of a single nozzle (91), ρ is the density of concrete, v is the velocity of concrete leaving the nozzle, and g is the acceleration due to gravity.

4. According to claim 1, an intelligent control system for over-consumption of shotcrete on tunnel wall, characterized in that: The actual injection volume V 实际 and the designed injection volume V 设计 Comparative analysis is performed to obtain the excess consumption V 超耗 :V 超耗 =V 实际 -V 设计 ; When the actual injection volume V 实际 Exceeding the designed injection volume V 设计 , there is overconsumption, which can be reduced by adjusting the injection pressure.

5. According to claim 1, the intelligent control system for over-consumption of shotcrete on the tunnel wall is characterized by: The injection device (9) also includes a mechanical arm (92), a clamping portion of the mechanical arm (92) is clamped with a fixed sleeve (93), the inner wall of the fixed sleeve (93) is rotatably connected to an adjustment shaft (94) via a bearing, one end of the fixed sleeve (93) is also rotatably connected to an annular material storage frame (95) via a bearing, the inner wall of the annular material storage frame (95) is rotatably connected to the circular arc surface of the adjustment shaft (94), and first sealing rings (96) are fixedly installed on the inner walls of both ends of the annular material storage frame (95), and the surfaces of the two first sealing rings (96) are pressed against the circular arc surface of the adjustment shaft (94).

6. The intelligent control system for over-consumption of shotcrete on the tunnel wall according to claim 5 is characterized by: A clamping groove (97) is provided at one end of the adjusting shaft (94), a feeding hole (98) is provided on the inner wall of the clamping groove (97), a trapezoidal connecting groove (99) is provided in an annular array on the inner bottom wall of the feeding hole (98), the trapezoidal connecting groove (99) is located in the middle of the two first sealing rings (96), an arc-shaped connecting groove (910) is provided in an annular array on the inner side wall of the annular material storage frame (95), four arc-shaped connecting grooves (910) correspond to and are fixedly connected with the four trapezoidal connecting grooves (99), a second sealing ring (911) is fixedly installed on the inner side wall of the clamping groove (97), and a conveying pipe (912) is rotatably connected to the inner side wall of the clamping groove (97) through a bearing, the arc surface of the conveying pipe (912) is pressed against the surface of the second sealing ring (911), and a hose (913) is fixedly installed on one end of the conveying pipe (912).

7. The intelligent control system for over-consumption of shotcrete on tunnel wall according to claim 5 is characterized by: A connecting mounting plate (914) is fixedly mounted on the front arc surface of the fixed sleeve (93), and the two connecting mounting plates (914) are symmetrically arranged. An adjusting motor (915) is fixedly mounted on the surface of one connecting mounting plate (914), and a rotating shaft (916) is fixedly mounted on the output end of the adjusting motor (915) via a coupling, and a small conical bevel gear (917) is fixedly mounted on one end of the rotating shaft (916). A large conical bevel gear (918) is fixedly mounted on the arc surface of one end of the adjusting shaft (94), and the gear teeth of the small conical bevel gear (917) are meshed with the tooth grooves of the large conical bevel gear (918).

8. The intelligent control system for over-consumption of shotcrete on tunnel wall according to claim 7 is characterized by: A rotating motor (919) is fixedly mounted on the surface of the other connecting mounting plate (914), a bevel gear shaft (920) is fixedly mounted on the output end of the rotating motor (919), a small bevel gear (921) is fixedly mounted on one end of the bevel gear shaft (920), and a large bevel gear (922) is fixedly mounted on the outer arc surface of the annular material storage frame (95), and the gear teeth of the small bevel gear (921) are meshed with the tooth grooves of the large bevel gear (922).

9. The intelligent control system for over-consumption of shotcrete on tunnel wall according to claim 5 is characterized by: A first annular hinge seat (923) is fixedly installed on the back of the annular material storage frame (95), and the inner wall of the first annular hinge seat (923) is rotatably connected to the arc surface of the adjusting shaft (94). The surface of the first annular hinge seat (923) is hinged with a long connecting rod (924) through a pin shaft, and multiple long connecting rods (924) are distributed in an annular array. The middle surface of each long connecting rod (924) is rotatably connected to a short connecting rod (925) through a pin shaft, and one end of multiple short connecting rods (925) is hinged with a second annular hinge seat (926) through a pin shaft. The arc surface of the adjusting shaft (94) is threadedly connected to an adjusting tube (927), and the arc surface of the adjusting tube (927) is rotatably connected to the inner wall of the second annular hinge seat (926) through a bearing.

10. The intelligent control system for over-consumption of shotcrete on tunnel wall according to claim 9, characterized in that: A protective cloth (928) is fixedly installed on the outer surface of the plurality of long connecting rods (924), the middle part of the protective cloth (928) is fixedly installed on the back side of the annular material storage frame (95), the top end of each of the long connecting rods (924) is respectively fixedly installed on the surface of each of the nozzles (91), and a flexible connecting pipe (929) is fixedly installed on the feed end of the nozzle (91), and the feed ends of the plurality of flexible connecting pipes (929) are fixedly connected to the inner wall of the annular material storage frame (95).

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