Tunnel construction water burst monitoring device

Abstract

The invention discloses a tunnel construction water burst monitoring device, which belongs to the technical field of tunnel construction, and comprises a base, a buoy, a winding and unwinding assembly and a load adjusting system, and a silk thread is connected between the base and the buoy; the load adjustment system comprises a data acquisition module, a stress analysis unit, a torque analysis unit, an adjustment module, a deviation angle analysis unit and an early warning unit. Through the winding and unwinding assembly and the load adjusting system, the tension of the silk thread can be dynamically adjusted to cope with water flow impact and rockfall interference, and the problem that a mooring rope is prone to deviation or winding in traditional buoy monitoring is solved; and the data acquisition module can be used for acquiring the water flow velocity, the vertical section area of a silk thread entering water and rockfall state data in real time, comprehensively evaluating the water gushing risk and generating an early warning signal, so that the stable operation of the device in a complex tunnel environment is improved, the stability of the buoy on the water surface is improved, and a reliable guarantee is provided for tunnel construction safety.

Description

Technical Field

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

[0002] Tunnel water inrush refers to the situation where, during tunnel construction, due to the inflow of groundwater or the penetration of other water sources, a large amount of water surges into the tunnel construction area; the water inrush monitoring in tunnel construction is to ensure the effective management and control of water flow during tunnel construction, prevent construction accidents, structural damage, and construction progress delays caused by water inrush; therefore, water inrush monitoring is an important link to ensure construction safety.

[0003] In the prior art, the technologies for tunnel water inrush include water level monitoring, pore water pressure monitoring, seepage flow monitoring, and floating buoy water depth monitoring, etc.; among them, the floating buoy water depth monitoring technology uses the buoyancy of the floating buoy to tow the cable, and indirectly monitors the water level through the change in the cable length.

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

[0005] In view of the deficiencies of 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 realized through the following technical solutions: A tunnel construction water inrush monitoring device includes a base and a floating buoy, which are connected by a silk thread. The device further includes: A retracting and releasing assembly, which is arranged on the base and is used to control the retracting and releasing length of the silk thread; A load adjustment system, which is used to adjust the load threshold of the retracting and releasing assembly; Among them, the load adjustment system specifically includes: A data acquisition module, which is used to acquire the water flow velocity at the tunnel water accumulation area, the vertical cross-sectional area of the silk thread entering the water, and the tunnel falling rock state data; the tunnel falling rock state data includes the volume and velocity of the falling rock; the vertical cross-sectional area of the silk thread entering the water refers to the vertical cross-sectional area of the silk thread affected by the water flow; A force analysis unit, which is used to generate an offset risk index of the silk thread according to the water flow velocity at the tunnel water accumulation area, the vertical cross-sectional area of the silk thread entering the water, the volume and velocity of the tunnel falling rock; A torque analysis unit for obtaining the current torque of the retracting and deploying assembly and generating a torque adjustment value; An adjustment module for adjusting the torque of the retracting and deploying assembly according to the torque adjustment value; An offset angle analysis unit for establishing an offset angle analysis model based on the torque adjustment value and generating the offset angle of the wire; An early warning unit for warning the water inflow speed of the current tunnel according to the offset angle of the wire.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions: Further technical solution: The retracting and deploying assembly specifically includes: A rotating shaft, both ends of the rotating shaft are rotatably arranged on the base, and the wire is wound around the rotating shaft; A limiting shaft, the 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 wire.

[0008] Further technical solution: The retracting and deploying assembly further includes: A first gear, the first gear is fixedly arranged at one end of the rotating shaft, and the first gear is rotatably connected with the base; A servo motor, the servo motor is arranged on one side of the first gear, and the servo motor is fixedly connected with the base; A second gear, the second gear is fixedly arranged on the output end of the servo motor, and the second gear is meshed with the first gear; A buckle, the buckle is fixedly arranged on the rotating shaft, and the buckle is fixedly connected with one end of the wire.

[0009] Further technical solution: The force analysis unit specifically includes: A water flow influence analysis module for generating the underwater force value of the wire according to the water flow velocity at the water accumulation place in the tunnel and the underwater cross-sectional area of the wire; A falling rock influence analysis module for generating a falling rock influence factor according to the volume and velocity of the falling rock in the tunnel; An offset risk analysis module for generating an offset risk index of the wire according to the underwater force value of the wire and the falling rock influence factor.

[0010] Further technical solution: The torque analysis unit specifically includes: A torque adjustment factor generation module for generating a torque adjustment factor according to the offset risk index of the wire; A torque adjustment value generation module, configured to obtain the current torque of the retracting and extending assembly, and generate a torque adjustment value according to the current torque of the retracting and extending assembly and a torque adjustment factor.

[0011] Further technical solution: The offset angle analysis unit specifically includes: A torque adjustment analysis module, configured to generate an adjusted torque value according to the torque adjustment value; wherein, the adjusted torque value refers to the sum of the current torque value and the torque adjustment value; An offset angle generation module, configured 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 silk thread.

[0012] Further technical solution: The warning unit specifically includes: An offset distance analysis module, configured to generate the offset distance of the float according to the offset angle of the silk thread; An offset distance judgment module, configured to give a warning about the water inrush speed of the current tunnel according to the offset distance of the float.

[0013] The present invention provides a tunnel construction water inrush monitoring device, which has the following beneficial effects compared with the prior art: Through the retracting and extending assembly and the load adjustment system, the present invention can not only dynamically adjust the tension of the silk thread to cope with water flow impact and falling rock interference, effectively solving the problems of excessive offset or winding of the cable in traditional float monitoring; but also can collect data such as water flow velocity, the vertical cross-sectional area of the silk thread entering the water, and the falling rock state in real time through the data acquisition module, and combine force analysis, torque adjustment and offset angle modeling to comprehensively evaluate the water inrush risk and generate a warning signal, ensuring the stable operation of the device in a complex tunnel environment. At the same time, by dynamically adjusting the torque and accurately calculating the offset distance of the float, the accuracy of water inrush speed monitoring and the timeliness of warning are significantly improved, providing a reliable guarantee for tunnel construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a tunnel construction water inrush monitoring device provided by an embodiment of the present invention.

[0015] Figure 2 It is a side sectional structural schematic diagram of a tunnel construction water inrush monitoring device provided by an embodiment of the present invention.

[0016] Figure 3 It is a structural schematic diagram of the retracting and extending assembly provided by an embodiment of the present invention.

[0017] Figure 4 It is a structural schematic diagram of the load adjustment system provided by an embodiment of the present invention.

[0018] Annotation of reference numerals: 1. Base; 2. Silk thread; 3. Floating buoy; 4. Sealing cover; 5. Retracting and releasing assembly; 501. Rotating shaft; 502. Limiting shaft; 503. First gear; 504. Servo motor; 505. Second gear; 506. Loop buckle. Detailed implementation mode

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, 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 used to limit the present invention.

[0020] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0021] As Figure 1 and Figure 4 shown, a water inrush monitoring device for tunnel construction provided by an embodiment of the present invention includes a base 1 and a floating buoy 3. The base 1 and the floating buoy 3 are connected by a silk thread 2. The device further includes: A retracting and releasing assembly 5, which is arranged on the base 1 and is used to control the retracting and releasing length of the silk thread 2; A load adjustment system, which is used to adjust the load threshold of the retracting and releasing assembly 5; Among them, the load adjustment system specifically includes: A data acquisition module, which is used to acquire the water flow velocity at the water accumulation place in the tunnel, the vertical cross-sectional area of the silk thread 2 entering the water and the tunnel rockfall state data; the tunnel rockfall state data includes the rockfall volume and the rockfall speed; the vertical cross-sectional area of the silk thread 2 entering the water refers to the vertical cross-sectional area of the silk thread 2 affected by the water flow; It should be explained that the rockfall speed refers to the falling speed of the stones in the tunnel falling to the water accumulation place in the tunnel; in addition, the water flow velocity at the water accumulation place in the tunnel is the average water flow velocity at the silk thread, that is, the average value of the water flow velocity of the accumulated water impacting the silk thread; A force analysis unit, which is used to generate an offset risk index of the silk thread 2 according to the water flow velocity at the water accumulation place in the tunnel, the vertical cross-sectional area of the silk thread 2 entering the water, the tunnel rockfall volume and the rockfall speed; A risk judgment module, which is used to judge whether the silk thread 2 has a risk of offset according to the offset risk index of the silk thread 2; A torque analysis unit, if the silk thread 2 has a risk of offset, the torque analysis unit is used to acquire the current torque of the retracting and releasing assembly 5 and generate a torque adjustment value; An adjustment module, which is used to adjust the torque of the retracting and releasing assembly 5 according to the torque adjustment value; An offset angle analysis unit, which is used to establish an offset angle analysis model according to the torque adjustment value and generate the offset angle of the silk thread 2; An early warning unit for warning the water gushing speed of the current tunnel according to the deviation angle of the wire 2.

[0022] As Figure 2 shown, as a preferred embodiment of the present invention, the winding and unwinding assembly 5 specifically includes: A rotating shaft 501, both ends of the rotating shaft 501 are rotatably arranged on the base 1, and the wire 2 is wound around the rotating shaft 501; A limiting shaft 502, the limiting shaft 502 is arranged on one side of the rotating shaft 501, and both ends of the limiting shaft 502 are rotatably arranged on the base 1; the limiting shaft 502 is in contact connection with the wire 2; Specifically, by rotating the rotating shaft 501, the wire 2 is wound around the rotating shaft 501, thereby driving the other end of the wire 2 to move. The other end of the wire 2 drives the floating buoy 3 to move. Since the floating buoy 3 has buoyancy in water, the floating buoy 3 pulls the wire 2 in the opposite direction, so that the wire 2 is in a taut state, and the floating buoy 3 is on the water surface; In this embodiment, the force for rotating the rotating shaft 501 is less than the reverse pulling force generated by the self-buoyancy of the floating buoy 3, so that the floating buoy 3 can always float on the water surface of the water accumulation in the tunnel, and the wire 2 is in a taut state; It should be explained that when the force for rotating the rotating shaft 501 is less than the reverse pulling force generated by the self-buoyancy of the floating buoy 3, when the wire 2 is not in a taut state, the reaction force generated by the floating buoy 3 on the rotating shaft 501 through the wire 2 does not exist. Until the wire 2 is in a taut state, the reverse pulling force of the floating buoy 3 on the wire 2 due to its own buoyancy acts on the rotating shaft 501, so that the rotating shaft 501 stops rotating, forming a control loop, and realizing that the height of the floating buoy 3 (i.e., the unwinding length of the wire 2) changes with the change of the water level at the water accumulation in the tunnel; It should be explained that in the process where the height of the floating buoy 3 (i.e., the unwinding length of the wire 2) changes with the change of the water level at the water accumulation in the tunnel, the unwinding length of the wire 2 increases with the increase of the water level, but it is not limited that the unwinding length of the wire 2 only increases with the increase of the water level, that is, it is not a synchronous change; for example, when the water level increases, the unwinding length of the wire 2 will increase, but the increase in the unwinding length of the wire 2 does not necessarily mean that the water level increases (it may be that other external factors cause changes in the unwinding length of the wire 2, such as being entangled by an object); In addition, the water gushing situation in the tunnel can be warned through the height of the floating buoy 3, that is, the unwinding length of the wire 2.

[0023] As Figure 3 shown, as a preferred embodiment of the present invention, the winding and unwinding assembly 5 further includes: The first gear 503 is fixedly arranged at one end of the rotating shaft 501, and the first gear 503 is rotatably connected to the base 1; A servo motor 504 is arranged on one side of the first gear 503, and the servo motor 504 is fixedly connected to the base 1; The second gear 505 is fixedly arranged on the output end of the servo motor 504, and the second gear 505 is meshed with the first gear 503; A buckle 506 is fixedly arranged on the rotating shaft 501, and the buckle 506 is fixedly connected to one end of the silk thread 2; Specifically, through the servo motor 504, 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 silk thread 2 is wound around the rotating shaft 501 through the buckle 506; 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 to drive 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 reversely until the load reaches balance with the set load of the motor, so that the float 3 can float out of the tunnel water accumulation surface while ensuring that the silk thread 2 is in a taut state; in addition, the servo motor 504 has waterproof measures.

[0024] As a preferred embodiment of the present invention, a sealing cover 4 is further arranged on the base 1, and the sealing cover 4 is used to prevent water from entering the base 1 and prevent the structures inside the base 1 from being damaged due to water ingress.

[0025] As a preferred embodiment of the present invention, the data acquisition methods in the data acquisition module specifically include: By arranging flow velocity sensors on the base 1 and the float 3, the flow velocity of the water accumulation in the tunnel can be acquired; By the pay-out length of the silk thread 2 and the unit cross-sectional area of the silk thread 2, the cross-sectional area of the silk thread 2 affected by the water flow can be generated, that is, the water-entry cross-sectional area of the silk thread 2; Specifically, by the difference between the total length of the silk thread 2 and the length of the silk thread 2 inside the base 1 (the length wound around the rotating shaft 501), the water-entry long cross-sectional area of the silk thread 2 at the tunnel water accumulation can be obtained; It should be noted that the difference between the total length of the silk thread 2 and the length of the silk thread 2 inside the base 1 can obtain the pay-out length of the silk thread 2; then, based on the unit area of the vertical cross-section (vertical profile) of the silk thread 2 (i.e., the cross-sectional area of the silk thread 2 per unit length) and the pay-out length of the silk thread 2, the underwater cross-sectional area of the silk thread 2 can be obtained. In this embodiment, the underwater cross-sectional area of the silk thread 2 can also be generated by the product value between the pay-out length of the silk thread 2 and the diameter (or width) of the silk thread 2. In addition, the tunnel rockfall state data can be obtained by means such as ultrasonic sensors and laser scanning sensors. This acquisition method is a prior art and will not be elaborated here.

[0026] As a preferred embodiment of the present invention, the force analysis unit specifically includes: A water flow influence analysis module, which is used to generate the underwater force value of the silk thread 2 according to the water flow velocity at the tunnel water accumulation area and the underwater cross-sectional area of the silk thread 2. Among them, the generation method of the underwater force value of the silk thread 2 is specifically as follows: Through the formula: ; Generate the underwater force value of the silk thread 2 ; In the formula, Cd represents the resistance coefficient of the silk thread 2, represents the density of the water in the tunnel water accumulation area, M represents the underwater cross-sectional area of the silk thread 2, and v represents the water flow velocity at the tunnel water accumulation area. It should be noted that the resistance coefficient Cd of the silk thread 2 is theoretical data, that is, the theoretical resistance coefficient of the silk thread 2, and the value-taking method thereof includes but is not limited to the experimental calibration method. A rockfall influence analysis module, which is used to generate a rockfall influence factor according to the rockfall volume and the rockfall velocity. Among them, the generation method of the rockfall influence factor is specifically as follows: Through the formula: ; Generate the water flow velocity change value ; In the formula, represents the rockfall volume, represents the rockfall density, represents the rockfall velocity, represents the total mass of the water body at the water accumulation area; It should be noted that the rockfall density is the average density of the falling rocks in the tunnel; in addition, the average density of the falling rocks in the tunnel refers to the average density of all the rocks with different densities in the tunnel; Then, through the formula: ; generate the falling rock influence factor K; In the formula, represents the change value of the water flow velocity, and v represents the water flow velocity at the water accumulation area in the tunnel; In this embodiment, when the falling rocks in the tunnel fall into the water accumulation area, they will cause fluctuations in the accumulated water, thereby causing changes in the water flow velocity at the water accumulation area; It should be explained that no matter whether the falling rocks are located upstream or downstream of the float 3, they will change the water flow velocity around them; In addition, the tunnel falling rocks refer to the falling rocks within a set range around the float 3, and this set range is set by relevant personnel in the field.

[0027] The offset risk analysis module is used to generate the offset risk index of the wire 2 according to the underwater force value of the wire 2 and the falling rock influence factor; Among them, the generation method of the offset risk index of the wire 2 is specifically as follows: Through the formula: ; generate the offset risk index Q of the wire 2; In the formula, represents the underwater force value of the wire 2, represents the buoyancy of the float 3 itself, and K represents the falling rock influence factor; It should be explained that when the float 3 floats on the water surface, if you want to sink the float 3 further underwater, 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.

[0028] As a preferred embodiment of the present invention, the judgment method for whether the wire 2 has the risk of offset is specifically as follows: Compare the offset risk index with the offset risk index threshold; The offset risk index threshold is a set value, and its value is set by relevant personnel in the field; If the offset risk index is less than or equal to the offset risk index threshold, it is determined that the wire 2 has no risk of offset, and the smaller the offset risk index, the lower the risk of the wire 2 having an offset; when it is determined that the wire 2 has no risk of offset, adjust the torque of the winding and unwinding component 5 to the initial torque; It should be noted that when there is no risk of deviation of the silk thread 2, that is, the influence of the water flow velocity at the water accumulation in the tunnel on the silk thread 2 is small, adjusting to the initial torque will not cause the float 3 to be dragged into the water due to abnormal torque of the winding and unwinding assembly 5; If the deviation risk index is greater than the deviation risk index threshold, it is determined that the silk thread 2 has a risk of deviation, and the greater the deviation risk index, the higher the risk of deviation of the silk thread 2.

[0029] As a preferred embodiment of the present invention, the torque analysis unit specifically includes: A torque adjustment factor generation module for generating a torque adjustment factor according to the deviation risk index of the silk thread 2; A torque adjustment value generation module for obtaining the current torque of the winding and unwinding assembly 5 and generating a torque adjustment value according to the current torque of the winding and unwinding assembly 5 and the torque adjustment factor.

[0030] As a preferred embodiment of the present invention, the generation method of the torque adjustment factor is specifically: Through the formula: ; Generate the torque adjustment factor β; In the formula, Q represents the deviation risk index of the silk thread 2, represents the deviation risk index threshold; It should be explained that the deviation risk index threshold is a set value and is set by relevant personnel in the field.

[0031] As a preferred embodiment of the present invention, the generation method of the torque adjustment value is specifically: Through the formula: ; Generate the torque adjustment value ; In the formula, β represents the torque adjustment factor, represents the current torque of the winding and unwinding assembly 5.

[0032] As a preferred embodiment of the present invention, the deviation angle analysis unit specifically includes: A torque adjustment analysis module for generating an adjusted torque value according to the torque adjustment value; wherein, the adjusted torque value refers to the sum of the current torque value and the torque adjustment value; A deviation angle generation module for establishing a deviation angle analysis model and substituting the adjusted torque value into the deviation angle analysis model to generate the deviation angle of the silk thread 2.

[0033] As a preferred embodiment of the present invention, the expression of the offset angle analysis model is specifically as follows: ; In the expression, represents the offset angle of the wire 2, represents the adjusted torque value of the winding and unwinding assembly 5, represents the initial torque value of the winding and unwinding assembly 5, represents the correlation coefficient between the torque of the winding and unwinding assembly 5 and the inclination angle of the wire 2; It should be explained that the correlation coefficient between the torque of the winding and unwinding assembly 5 and the inclination angle of the wire 2 is obtained by a linear regression equation.

[0034] As a preferred embodiment of the present invention, the warning unit specifically includes: An offset distance analysis module for generating the offset distance of the float 3 according to the offset angle of the wire 2; An offset distance judgment module for warning the water gushing speed of the current tunnel according to the offset distance of the float 3.

[0035] As a preferred embodiment of the present invention, the generation method of the offset distance of the float 3 is specifically as follows: Through the formula: ; Generate the offset distance of the float 3 ; In the formula, h represents the vertical distance from the winding and unwinding assembly 5 to the water surface of the tunnel water accumulation, represents the offset angle of the wire 2; It should be explained that the method of obtaining the offset angle of the wire 2 includes, but is not limited to, image analysis by an image sensor, setting an inclination sensor on the wire, etc. This obtaining method is a prior art and will not be elaborated here.

[0036] As a preferred embodiment of the present invention, the method of warning the water gushing speed of the current tunnel is specifically as follows: Compare the offset distance with the offset distance threshold; It should be explained that the offset distance threshold is a set value and is set by relevant personnel in the field; If the offset distance is less than or equal to the offset distance threshold, it is determined that the water gushing speed of the current tunnel is within the normal range, and no warning is required. Only relevant personnel need to conduct daily monitoring; If the offset distance is greater than the offset distance threshold, it is determined that the water gushing speed of the current tunnel is not within the normal range. At this time, it is necessary to remind the relevant personnel so that they can carry out relevant processing work; It should be added that the ways to remind the relevant personnel include but are not limited to ways such as light flashing and voice broadcast; for example, a speaker is installed on the ground for reminder by voice broadcast; In addition, through the offset distance and the offset distance threshold, it is also possible to prevent the abnormal situation of the wire 2 caused by the overlong pay-off length of the wire 2, such as the wire 2 being wound around the protrusion of the tunnel, etc., thereby reducing the risk of damage to the device during use.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water inrush monitoring device for tunnel construction, comprising a base (1) and a float (3), wherein the base (1) is connected to the float (3) by a silk thread (2), and is characterized in that, The device further includes: A winding and unwinding component (5), which is arranged on the base (1) and is used to control the winding and unwinding length of the silk thread (2); A load adjustment system, which is used to adjust the load threshold of the winding and unwinding component (5); Wherein, the load adjustment system specifically includes: A data acquisition module, which is used to acquire the water flow velocity at the water accumulation area in the tunnel, the vertical cross-sectional area of the silk thread (2) entering the water, and the tunnel rockfall state data; the tunnel rockfall state data includes the rockfall volume and the rockfall velocity; the vertical cross-sectional area of the silk thread (2) entering the water refers to the vertical cross-sectional area of the silk thread (2) affected by the water flow; A force analysis unit, which is used to generate an offset risk index of the silk thread (2) according to the water flow velocity at the water accumulation area in the tunnel, the vertical cross-sectional area of the silk thread (2) entering the water, the tunnel rockfall volume and the rockfall velocity; A torque analysis unit, which is used to acquire the current torque of the winding and unwinding component (5) and generate a torque adjustment value; An adjustment module, which is used to adjust the torque of the winding and unwinding component (5) according to the torque adjustment value; An offset angle analysis unit, which is used to establish an offset angle analysis model according to the torque adjustment value and generate the offset angle of the silk thread (2); An early warning unit, which is used to give an early warning of the water gushing speed of the current tunnel according to the offset angle of the silk thread (2).

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

3. The water inrush monitoring device for tunnel construction according to claim 2, wherein The winding and unwinding component (5) further includes: A first gear (503), the first gear (503) is fixedly arranged at one end of the rotating shaft (501), and the first gear (503) is rotatably connected with the base (1); A servo motor (504), the servo motor (504) is arranged on one side of the first gear (503), and the servo motor (504) is fixedly connected with the base (1); A second gear (505), the second gear (505) is fixedly arranged on the output end of the servo motor (504), and the second gear (505) is meshed with the first gear (503); A buckle (506), the buckle (506) is fixedly arranged on the rotating shaft (501), and the buckle (506) is fixedly connected with one end of the silk thread (2).

4. The water inrush monitoring device for tunnel construction according to claim 1, characterized in that, The force analysis unit specifically includes: A water flow influence analysis module, which is used to generate an underwater force value of the silk thread (2) according to the water flow velocity at the water accumulation area in the tunnel and the vertical cross-sectional area of the silk thread (2) entering the water; A rockfall influence analysis module, which is used to generate a rockfall influence factor according to the tunnel rockfall volume and the rockfall velocity; An offset risk analysis module, which is used to generate an offset risk index of the silk thread (2) according to the underwater force value of the silk thread (2) and the rockfall influence factor.

5. The water inrush monitoring device for tunnel construction according to claim 4, characterized in that, The torque analysis unit specifically includes: A torque adjustment factor generation module, configured to generate a torque adjustment factor according to the offset risk index of the wire (2); A torque adjustment value generation module, configured to obtain the current torque of the winding and unwinding assembly (5), and generate a torque adjustment value according to the current torque of the winding and unwinding assembly (5) and the torque adjustment factor.

6. The water inrush monitoring device for tunnel construction 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 according to the torque adjustment value; wherein, the adjusted torque value refers to the sum of the current torque value and the torque adjustment value; An offset angle generation module, configured to establish an offset angle analysis model, and substitute the adjusted torque value into the offset angle analysis model to generate the offset angle of the wire (2).

7. The water inrush monitoring device for tunnel construction according to claim 6, characterized in that, The warning unit specifically includes: An offset distance analysis module, configured to generate the offset distance of the float (3) according to the offset angle of the wire (2); An offset distance judgment module, configured to warn of the water inrush speed of the current tunnel according to the offset distance of the float (3).

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