A tunnel construction water inrush monitoring device

Abstract

The present invention discloses a tunnel construction water gushing monitoring device, which belongs to the technical field of tunnel construction. The device comprises a base and a float, wherein a silk thread is connected between the base and the float, and further comprises a retractable assembly and a load adjustment system; the load adjustment system comprises a data acquisition module, a force analysis unit, a torque analysis unit, an adjustment module, an offset angle analysis unit and an early warning unit; the present invention uses the retractable assembly and the load adjustment system to not only dynamically adjust the tension of the silk thread to cope with water flow impact and rockfall interference, and prevent the problem of easy deviation or entanglement of the cable in traditional float monitoring; the data acquisition module can also be used to collect water flow velocity, vertical cross-sectional area of ​​the silk thread entering the water and rockfall status data in real time, comprehensively evaluate the water gushing risk and generate an early warning signal, thereby improving the stable operation of the device in a complex tunnel environment, thereby improving the stability of the float on the water surface, and providing reliable protection for tunnel construction safety.

Description

Technical Field

[0001] The present invention belongs to the technical field of tunnel construction, and in particular relates to a tunnel construction water inrush monitoring device. Background Art

[0002] Tunnel water inrush refers to the influx of large amounts of water into the tunnel construction area due to the inflow of groundwater or the infiltration of other water sources during tunnel construction. Water inrush monitoring during tunnel construction is to ensure the effective management and control of water flow during tunnel construction, and to prevent construction accidents, structural damage, and delays in construction schedules caused by water inrush. Therefore, water inrush monitoring is an important part of ensuring construction safety.

[0003] In the existing technology, the technologies for tunnel water inrush include water level monitoring, pore water pressure monitoring, seepage flow monitoring and float water depth monitoring. Among them, the float water depth monitoring technology uses the buoyancy of the float to pull the cable and indirectly monitor the water level through the change of the cable length.

[0004] However, in actual applications, the cable is easily deflected or entangled with obstacles due to the impact of water flow, resulting in inaccurate positioning of the float. It also lacks a dynamic tension adjustment mechanism and cannot cope with falling rocks or sudden water flow impacts. It can only provide water level information and cannot comprehensively evaluate water flow velocity and environmental interference factors. To address the above problems, a tunnel water inrush monitoring device is needed that can dynamically adjust the cable tension and comprehensively evaluate water flow and falling rock impacts. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a tunnel construction water inrush monitoring device to solve the above problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A tunnel construction water inrush monitoring device includes a base and a float, wherein the base and the float are connected by a silk thread, and the device also includes:

[0007] A retractable assembly, which is arranged on the base and is used to control the retractable length of the silk thread;

[0008] A load adjustment system, used to adjust the load threshold of the retractable component;

[0009] The load adjustment system specifically includes:

[0010] a data acquisition module for acquiring water flow velocity at the water-filled area of ​​the tunnel, the vertical cross-sectional area of ​​the thread entering the water, and tunnel rockfall status data; the tunnel rockfall status data includes rockfall volume and rockfall velocity; the vertical cross-sectional area of ​​the thread entering the water refers to the vertical cross-sectional area of ​​the thread affected by the water flow;

[0011] a force analysis unit for generating a deviation risk index of the thread according to a water flow velocity at a water accumulation point in the tunnel, a vertical cross-sectional area of ​​the thread entering the water, a volume of rockfall in the tunnel, and a rockfall velocity;

[0012] a torque analysis unit, configured to obtain the current torque of the retractable assembly and generate a torque adjustment value;

[0013] An adjustment module, configured to adjust the torque of the retractable assembly according to a torque adjustment value;

[0014] an offset angle analysis unit, configured to establish an offset angle analysis model according to the torque adjustment value and generate an offset angle of the wire;

[0015] The early warning unit is used to issue an early warning of the current water inrush speed in the tunnel according to the offset angle of the silk thread.

[0016] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0017] Further technical solution: The retractable assembly specifically includes:

[0018] a rotating shaft, both ends of which are rotatably disposed on the base, and the silk thread is wound around the rotating shaft;

[0019] A limiting shaft is arranged on one side of the rotating shaft, and both ends of the limiting shaft are rotatably arranged on the base; the limiting shaft is in contact connection with the silk thread.

[0020] Further technical solution: The retractable assembly further includes:

[0021] a first gear, the first gear being fixedly disposed at one end of the rotating shaft and being rotatably connected to the base;

[0022] A servo motor, the servo motor being arranged on one side of the first gear and fixedly connected to the base;

[0023] a second gear, the second gear being fixedly disposed on an output end of the servo motor and meshingly connected with the first gear;

[0024] The ring buckle is fixedly arranged on the rotating shaft and fixedly connected to one end of the silk thread.

[0025] Further technical solution: The force analysis unit specifically includes:

[0026] A water flow impact analysis module, configured to generate an underwater force value of the thread based on the water flow velocity at the tunnel water accumulation point and the vertical cross-sectional area of ​​the thread entering the water;

[0027] Rockfall impact analysis module, used to generate rockfall impact factors based on the volume and velocity of rockfall in tunnels;

[0028] The deviation risk analysis module is used to generate a deviation risk index of the silk line according to the underwater force value of the silk line and the rockfall impact factor.

[0029] Further technical solution: The torque analysis unit specifically includes:

[0030] a torque adjustment factor generating module, configured to generate a torque adjustment factor according to the deviation risk index of the wire;

[0031] The torque adjustment value generating module is used to obtain the current torque of the retractable component and generate a torque adjustment value according to the current torque of the retractable component and a torque adjustment factor.

[0032] Further technical solution: The offset angle analysis unit specifically includes:

[0033] a torque adjustment analysis module, configured to generate an adjusted torque value based on the torque adjustment value; wherein the adjusted torque value refers to the sum of the current torque value and the torque adjustment value;

[0034] The offset angle generating module is used to establish an offset angle analysis model, substitute the adjusted torque value into the offset angle analysis model, and generate the offset angle of the wire.

[0035] Further technical solution: The early warning unit specifically includes:

[0036] an offset distance analysis module, for generating an offset distance of the float according to an offset angle of the silk line;

[0037] The offset distance judgment module is used to issue an early warning of the water inrush speed in the current tunnel according to the offset distance of the float.

[0038] The present invention provides a tunnel construction water inrush monitoring device, which has the following advantages compared with the prior art:

[0039] The present invention uses a retractable component and a load adjustment system to dynamically adjust the tension of the wire to cope with water flow impact and rockfall interference, effectively solving the problem of excessive cable deviation or entanglement in traditional float monitoring; it can also collect water flow velocity, vertical cross-sectional area of ​​the wire entering the water and rockfall status data in real time through the data acquisition module, and combine force analysis, torque adjustment and offset angle modeling to comprehensively evaluate the water gushing risk and generate early warning signals, ensuring the stable operation of the device in complex tunnel environments. At the same time, by dynamically adjusting the torque and accurately calculating the float offset distance, the accuracy of water gushing speed monitoring and the timeliness of early warning are significantly improved, providing reliable protection for tunnel construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of the three-dimensional structure of a tunnel construction water inrush monitoring device provided by an embodiment of the present invention.

[0041] Figure 2 A schematic side sectional view of a tunnel construction water inrush monitoring device provided by an embodiment of the present invention.

[0042] Figure 3 A schematic structural diagram of a retractable assembly provided in an embodiment of the present invention.

[0043] Figure 4 A schematic diagram of the structure of a load adjustment system provided by an embodiment of the present invention.

[0044] Notes on the accompanying drawings: 1. Base; 2. Silk thread; 3. Float; 4. Sealing cover; 5. Retractable assembly; 501. Rotating shaft; 502. Limiting shaft; 503. First gear; 504. Servo motor; 505. Second gear; 506. Buckle. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0046] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0047] like Figure 1 and Figure 4 As shown, a tunnel construction water inrush monitoring device provided by an embodiment of the present invention includes a base 1 and a float 3, wherein the base 1 and the float 3 are connected by a wire 2, and the device further includes:

[0048] A retractable assembly 5 is provided on the base 1 and is used to control the retractable length of the thread 2;

[0049] A load adjustment system, used to adjust the load threshold of the retractable component 5;

[0050] The load adjustment system specifically includes:

[0051] a data acquisition module for acquiring the water flow velocity at the water-filled area of ​​the tunnel, the vertical cross-sectional area of ​​the thread 2 entering the water, and the tunnel rockfall status data; the tunnel rockfall status data includes the rockfall volume and rockfall velocity; the vertical cross-sectional area of ​​the thread 2 entering the water refers to the vertical cross-sectional area of ​​the thread 2 affected by the water flow;

[0052] It should be explained that the rockfall velocity refers to the speed at which rocks in the tunnel fall into the tunnel water pool; in addition, the water flow velocity at the tunnel water pool is the average water flow velocity at the silk line, that is, the average of the water flow velocity that impacts the silk line;

[0053] A force analysis unit, configured to generate a deviation risk index of the wire 2 based on the water flow velocity at the water accumulation point in the tunnel, the vertical cross-sectional area of ​​the wire 2 entering the water, the volume of rockfall in the tunnel, and the rockfall velocity;

[0054] a risk judgment module, configured to judge whether the thread 2 has a risk of deviation according to the deviation risk index of the thread 2;

[0055] a torque analysis unit, for obtaining the current torque of the retractable assembly 5 and generating a torque adjustment value if the wire 2 is at risk of deviation;

[0056] An adjustment module, configured to adjust the torque of the retractable assembly 5 according to a torque adjustment value;

[0057] an offset angle analysis unit, configured to establish an offset angle analysis model according to the torque adjustment value, and generate an offset angle of the wire 2;

[0058] The early warning unit is used to issue an early warning of the current water inrush speed in the tunnel according to the offset angle of the wire 2.

[0059] like Figure 2 As shown, as a preferred embodiment of the present invention, the retractable assembly 5 specifically includes:

[0060] a rotating shaft 501 , both ends of which are rotatably disposed on the base 1 , and the thread 2 is wound around the rotating shaft 501 ;

[0061] A limiting shaft 502 is provided on one side of the rotating shaft 501 , with both ends of the limiting shaft 502 being rotatably provided on the base 1 ; the limiting shaft 502 is in contact with the wire 2 ;

[0062] Specifically, by rotating the shaft 501, the silk thread 2 is wound around the shaft 501, thereby driving the other end of the silk thread 2 to move, and the other end of the silk thread 2 drives the float 3 to move. Since the float 3 has buoyancy in the water, the float 3 pulls the silk thread 2 in the opposite direction, so that the silk thread 2 is in a taut state, and the float 3 is on the water surface;

[0063] In this embodiment, the force of rotating the shaft 501 is smaller than the reverse pulling force generated by the buoyancy of the float 3, so that the float 3 can always remain floating on the water surface of the tunnel water accumulation area, and the silk thread 2 is in a taut state;

[0064] It should be explained that when the force of rotating shaft 501 is less than the reverse pulling force generated by the buoyancy of float 3, when the silk line 2 is not in a taut state, the reaction force generated by float 3 on rotating shaft 501 through silk line 2 does not exist. Until the silk line 2 is in a taut state, the reverse pulling force on silk line 2 generated by the buoyancy of float 3 acts on rotating shaft 501, thereby stopping the rotation of rotating shaft 501, forming a control cycle, so that the height of float 3 (i.e., the pay-out length of silk line 2) changes with the water level of the water accumulation in the tunnel;

[0065] It should be noted that while the height of the float 3 (i.e., the payout length of the silk thread 2) changes with the water level in the flooded area of ​​the tunnel, the payout length of the silk thread 2 increases with the water level. This does not limit the payout length of the silk thread 2 to increasing only with the water level, i.e., it changes asynchronously. For example, when the water level rises, the payout length of the silk thread 2 increases, but an increase in the payout length of the silk thread 2 does not necessarily mean that the water level has increased (the change in the payout length of the silk thread 2 may be caused by other external factors, such as entanglement).

[0066] In addition, the height of the float 3, that is, the pay-out length of the silk thread 2, can be used to provide an early warning of water inrush in the tunnel.

[0067] like Figure 3 As shown, as a preferred embodiment of the present invention, the retractable assembly 5 further includes:

[0068] A first gear 503 , which is fixedly disposed at one end of the rotating shaft 501 and is rotatably connected to the base 1 ;

[0069] A servo motor 504 is provided on one side of the first gear 503 and is fixedly connected to the base 1;

[0070] A second gear 505 , which is fixedly mounted on the output end of the servo motor 504 and meshes with the first gear 503 ;

[0071] A buckle 506 , which is fixedly mounted on the rotating shaft 501 and is fixedly connected to one end of the thread 2 ;

[0072] Specifically, the output end of the servo motor 504 drives the second gear 505 to rotate, the second gear 505 drives the first gear 503 to rotate, and the first gear 503 drives the rotating shaft 501 to rotate, so that the rotating shaft 501 is wound around the wire 2 through the ring buckle 506;

[0073] In this embodiment, the servo motor 504 is a motor with load feedback. The specific principle is: when the load of the servo motor 504 is less than the set value, the servo motor 504 rotates forward, driving the rotating shaft 501 to rotate to complete the tightening of the silk thread 2; if the load of the servo motor 504 exceeds the set value, the output end of the servo motor 504 rotates in the opposite direction until the load and the motor set load are balanced, so that the float 3 can float out of the water surface of the tunnel while ensuring that the silk thread 2 is in a taut state; in addition, the servo motor 504 has waterproof measures.

[0074] As a preferred embodiment of the present invention, a sealing cover 4 is further provided on the base 1. The sealing cover 4 is used to prevent water from entering the base 1 and prevent the structure inside the base 1 from being damaged due to water ingress.

[0075] As a preferred embodiment of the present invention, the data acquisition method in the data acquisition module specifically includes:

[0076] By arranging flow velocity sensors on the base 1 and the float 3, the flow velocity of the water in the water accumulation area of ​​the tunnel can be obtained;

[0077] The vertical cross-sectional area of ​​the thread 2 affected by the water flow, i.e., the vertical cross-sectional area of ​​the thread 2 entering the water, can be calculated by the pay-out length of the thread 2 and the unit vertical cross-sectional area of ​​the thread 2.

[0078] Specifically, the vertical cross-sectional area of ​​the wire 2 entering the water at the tunnel water accumulation point can be obtained by the difference between the total length of the wire 2 and the length of the wire 2 in the base 1 (the length wound on the rotating shaft 501);

[0079] It should be explained that the difference between the total length of the wire 2 and the length of the wire 2 inside the base 1 can be used to obtain the pay-out length of the wire 2; and the vertical cross-sectional area of ​​the wire 2 entering the water can be obtained based on the unit area of ​​the vertical cross-section (vertical section) of the wire 2 (i.e., the vertical cross-sectional area of ​​the wire 2 per unit length) and the pay-out length of the wire 2.

[0080] In this embodiment, the vertical cross-sectional area of ​​the wire 2 entering the water can also be generated by the product of the pay-out length of the wire 2 and the diameter (or width) of the wire 2;

[0081] In addition, the tunnel rockfall status data can be obtained through ultrasonic sensors, laser scanning sensors, etc. This acquisition method is an existing technology and will not be described in detail here.

[0082] As a preferred embodiment of the present invention, the force analysis unit specifically includes:

[0083] A water flow impact analysis module, configured to generate an underwater force value of the thread 2 based on the water flow velocity at the tunnel water accumulation point and the vertical cross-sectional area of ​​the thread 2 entering the water;

[0084] The underwater force value of the thread 2 is generated in the following manner:

[0085] By formula:

[0086] ;

[0087] Generate underwater force value of the thread 2 ;

[0088] In the formula, Cd represents the resistance coefficient of the wire 2, represents the density of water in the tunnel waterlogging area, M represents the vertical cross-sectional area of ​​the thread 2 entering the water, and v represents the water flow velocity in the tunnel waterlogging area;

[0089] It should be explained that the resistance coefficient Cd of the wire 2 is theoretical data, that is, the theoretical resistance coefficient of the wire 2, and the method of obtaining the value includes but is not limited to the experimental calibration method;

[0090] Rockfall impact analysis module, used to generate rockfall impact factors based on rockfall volume and rockfall speed;

[0091] The rockfall impact factor is generated in the following manner:

[0092] By formula:

[0093] ;

[0094] Generate water flow rate change value ;

[0095] In the formula, represents the volume of rockfall, represents the density of rockfall. It represents the rockfall speed. It represents the total mass of water in the water accumulation area;

[0096] It should be explained that the density of rockfall is the average density of fallen rocks in the tunnel; in addition, the average density of fallen rocks in the tunnel refers to the average density of all rocks of different densities in the tunnel;

[0097] Then through the formula:

[0098] ;

[0099] Generate rockfall impact factor K;

[0100] In the formula, It represents the change of water flow velocity, and v represents the water flow velocity at the water accumulation point in the tunnel;

[0101] In this embodiment, when the fallen rocks in the tunnel fall into the water accumulation area, the water accumulation area will fluctuate, thereby causing the flow rate of the water in the water accumulation area to change;

[0102] It should be explained that no matter whether the rockfall is located upstream or downstream of the float 3, it will change the velocity of the water flow around it;

[0103] In addition, tunnel rockfall refers to rockfall that falls within a set range around the float 3, and the set range is set by relevant personnel in this field.

[0104] a deviation risk analysis module, configured to generate a deviation risk index of the thread 2 based on the underwater force value of the thread 2 and the rockfall impact factor;

[0105] The deviation risk index of the thread 2 is generated in the following manner:

[0106] By formula:

[0107] ;

[0108] generating a deviation risk index Q of the thread 2;

[0109] In the formula, It represents the underwater force value of the thread 2. represents the buoyancy of the float 3 itself, and K represents the rockfall impact factor;

[0110] It should be explained that when the float 3 floats on the water surface, if you want to make the float 3 continue to sink to the bottom of the water, the required pulling force is the buoyancy of the float 3 itself; in addition, when the surface of the float 3 sinks into the water, the required pulling force is the maximum buoyancy of the float 3 itself.

[0111] As a preferred embodiment of the present invention, the method for determining whether the wire 2 has a risk of deviation is specifically as follows:

[0112] comparing the drift risk index to a drift risk index threshold;

[0113] The threshold of the deviation risk index is a set value, and its value is set by relevant personnel in this field;

[0114] If the deviation risk index is less than or equal to the deviation risk index threshold, it is determined that the wire 2 has no risk of deviation, and the smaller the deviation risk index, the lower the risk of deviation of the wire 2. When it is determined that the wire 2 has no risk of deviation, the torque of the retracting and extending assembly 5 is adjusted to the initial torque.

[0115] It should be noted that when the wire 2 does not have the risk of deviation, that is, the water flow velocity in the tunnel water accumulation area has little effect on the wire 2, the initial torque is adjusted so that the float 3 will not be dragged into the water due to the abnormal torque of the retracting and releasing component 5;

[0116] If the deviation risk index is greater than the deviation risk index threshold, it is determined that the wire 2 has a risk of deviation, and the greater the deviation risk index is, the higher the risk of the wire 2 having deviation is.

[0117] As a preferred embodiment of the present invention, the torque analysis unit specifically includes:

[0118] a torque adjustment factor generating module, configured to generate a torque adjustment factor according to a deviation risk index of the wire 2;

[0119] The torque adjustment value generating module is used to obtain the current torque of the retractable component 5 and generate a torque adjustment value according to the current torque of the retractable component 5 and a torque adjustment factor.

[0120] As a preferred embodiment of the present invention, the torque adjustment factor is generated in the following manner:

[0121] By formula:

[0122] ;

[0123] Generate torque adjustment factor β;

[0124] In the formula, Q represents the deviation risk index of the thread 2, It represents the threshold value of the deviation risk index;

[0125] It should be explained that the offset risk index threshold is a set value and is set by relevant personnel in this field.

[0126] As a preferred embodiment of the present invention, the torque adjustment value is generated in the following manner:

[0127] By formula:

[0128] ;

[0129] Generate torque adjustment value ;

[0130] In the formula, β represents the torque adjustment factor, It represents the current torque of the retractable component 5.

[0131] As a preferred embodiment of the present invention, the offset angle analysis unit specifically includes:

[0132] a torque adjustment analysis module, configured to generate an adjusted torque value based on the torque adjustment value; wherein the adjusted torque value refers to the sum of the current torque value and the torque adjustment value;

[0133] The offset angle generation module is used to establish an offset angle analysis model, substitute the adjusted torque value into the offset angle analysis model, and generate the offset angle of the wire 2.

[0134] As a preferred embodiment of the present invention, the expression of the offset angle analysis model is specifically:

[0135] ;

[0136] In the expression, It represents the offset angle of the wire 2. It represents the torque value after the retractable component 5 is adjusted. It represents the initial torque value of the retractable component 5. It represents the correlation coefficient between the torque of the retractable assembly 5 and the tilt angle of the wire 2;

[0137] It should be explained that the correlation coefficient between the torque of the retractable assembly 5 and the tilt angle of the wire 2 is The value is obtained through the linear regression equation.

[0138] As a preferred embodiment of the present invention, the early warning unit specifically includes:

[0139] an offset distance analysis module, configured to generate an offset distance of the float 3 according to an offset angle of the silk thread 2;

[0140] The offset distance judgment module is used to issue an early warning of the current water inrush speed in the tunnel according to the offset distance of the float 3.

[0141] As a preferred embodiment of the present invention, the offset distance of the float 3 is generated in the following manner:

[0142] By formula:

[0143] ;

[0144] Generate the offset distance of the float 3 ;

[0145] In the formula, h represents the vertical distance from the retractable component 5 to the water surface of the tunnel. It represents the offset angle of the wire 2;

[0146] It should be explained that the method of obtaining the offset angle of the wire 2 includes but is not limited to image analysis using an image sensor, setting a tilt sensor on the wire, etc. This acquisition method is a prior art and will not be repeated here.

[0147] As a preferred embodiment of the present invention, the method of providing an early warning of the current water inrush speed in the tunnel is specifically as follows:

[0148] comparing the offset distance to an offset distance threshold;

[0149] It should be explained that the offset distance threshold is a set value, which is set by relevant personnel in this field;

[0150] If the offset distance is less than or equal to the offset distance threshold, the current tunnel water inflow rate is determined to be within the normal range and no warning is required. Only daily monitoring by relevant personnel is required.

[0151] If the offset distance is greater than the offset distance threshold, it is determined that the current tunnel water inflow speed is not within the normal range. At this time, it is necessary to remind relevant personnel so that they can carry out relevant processing work;

[0152] It should be noted that the methods of reminding relevant personnel include but are not limited to flashing lights, voice announcements, etc. For example, a loudspeaker may be installed on the ground to remind personnel through voice announcements;

[0153] In addition, the offset distance and the offset distance threshold can also prevent the wire 2 from being paid out too long, causing abnormalities in the wire 2, such as the wire 2 being entangled in the bulge of the tunnel, thereby reducing the risk of damage to the device during use.

[0154] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel construction water inrush monitoring device, comprising a base (1) and a float (3), wherein the base (1) and the float (3) are connected via a wire (2), and is characterized in that: The device also includes: A retractable assembly (5), the retractable assembly (5) being arranged on the base (1) and being used to control the retractable length of the silk thread (2); A load adjustment system, used for adjusting the load threshold of the retractable assembly (5); The load adjustment system specifically includes: A data acquisition module is used to acquire the water flow velocity at the water accumulation point in the tunnel, the vertical cross-sectional area of ​​the thread (2) entering the water, and the tunnel rockfall status data; the tunnel rockfall status data includes the rockfall volume and rockfall speed; the vertical cross-sectional area of ​​the thread (2) entering the water refers to the vertical cross-sectional area of ​​the thread (2) affected by the water flow; A force analysis unit is used to generate a deviation risk index of the wire (2) based on the water flow velocity at the water accumulation point in the tunnel, the vertical cross-sectional area of ​​the wire (2) entering the water, the volume of rockfall in the tunnel, and the rockfall velocity; a risk judgment module, for judging whether the silk thread (2) has a risk of deviation based on the deviation risk index of the silk thread (2); a torque analysis unit, for obtaining the current torque of the retractable assembly (5) and generating a torque adjustment value if the wire (2) has a risk of deviation; An adjustment module, used for adjusting the torque of the retractable assembly (5) according to a torque adjustment value; An offset angle analysis unit is used to establish an offset angle analysis model based on the torque adjustment value to generate the offset angle of the wire (2); An early warning unit is used to issue an early warning of the current water inrush speed in the tunnel based on the offset angle of the wire (2).

2. A tunnel construction water inrush monitoring device according to claim 1, characterized in that: The retractable component (5) specifically includes: A rotating shaft (501), both ends of which are rotatably arranged on the base (1), and the silk thread (2) is wound around the rotating shaft (501); A limiting shaft (502) is provided on one side of the rotating shaft (501), and both ends of the limiting shaft (502) are rotatably provided on the base (1); the limiting shaft (502) is in contact connection with the silk thread (2).

3. A tunnel construction water inrush monitoring device according to claim 2, characterized in that: The retractable assembly (5) further comprises: a first gear (503), the first gear (503) being fixedly disposed on one end of the rotating shaft (501), and the first gear (503) being rotatably connected to the base (1); a servo motor (504), the servo motor (504) being arranged on one side of the first gear (503), and the servo motor (504) being fixedly connected to the base (1); a second gear (505), the second gear (505) being fixedly arranged on the output end of the servo motor (504), and the second gear (505) being meshedly connected with the first gear (503); A ring buckle (506), wherein the ring buckle (506) is fixedly arranged on the rotating shaft (501), and the ring buckle (506) is fixedly connected to one end of the silk thread (2).

4. The tunnel construction water inrush monitoring device according to claim 1, characterized in that: The force analysis unit specifically includes: A water flow impact analysis module, used to generate an underwater force value of the thread (2) based on the water flow velocity at the water accumulation point in the tunnel and the vertical cross-sectional area of ​​the thread (2) entering the water; Rockfall impact analysis module, used to generate rockfall impact factors based on the volume and velocity of rockfall in tunnels; The deviation risk analysis module is used to generate a deviation risk index of the silk line (2) based on the underwater force value of the silk line (2) and the rockfall impact factor.

5. The tunnel construction water inrush monitoring device according to claim 4, characterized in that: The torque analysis unit specifically includes: A torque adjustment factor generating module, configured to generate a torque adjustment factor according to a deviation risk index of the wire (2); The torque adjustment value generating module is used to obtain the current torque of the retractable component (5) and generate a torque adjustment value according to the current torque of the retractable component (5) and a torque adjustment factor.

6. The tunnel construction water inrush monitoring device according to claim 5, characterized in that: The offset angle analysis unit specifically includes: a torque adjustment analysis module, configured to generate an adjusted torque value based on the torque adjustment value; wherein the adjusted torque value refers to the sum of the current torque value and the torque adjustment value; The offset angle generation module is used to establish an offset angle analysis model, substitute the adjusted torque value into the offset angle analysis model, and generate the offset angle of the wire (2).

7. The tunnel construction water inrush monitoring device according to claim 6, characterized in that: The early warning unit specifically includes: An offset distance analysis module, used for generating an offset distance of the float (3) according to an offset angle of the silk thread (2); The offset distance judgment module is used to give an early warning of the current water inrush speed in the tunnel according to the offset distance of the float (3).

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