A tunnel water and mud disaster prevention device and its use method

Abstract

The present invention provides a tunnel water gushing mud disaster prevention device and method, the disaster prevention device comprises a baffle and a movable base, one end of the base is hinged with the baffle, the baffle is connected to the base through a cylinder on the side close to the base, the cylinder controls the rotation of the baffle through a telescopic piston rod, an air bag is arranged on the side of the baffle away from the base, and a gas generator is arranged in the baffle; the disaster prevention device also comprises an external control terminal, a controller, and a reactant mass conveying device, the rock wall inclination angle, inclination direction and required reactant mass are calculated through the external control terminal, and an instruction is sent to the controller to control the extension and contraction of the cylinder piston rod to change the inclination angle of the baffle, and an instruction is sent to the reactant mass conveying device to convey the corresponding mass of reactant to the gas generator. The present invention can automatically adjust the blocking angle by analyzing the inclination angle and inclination direction of the rock wall, so that the air bag on the baffle has a good fitting effect with the rock wall, and is suitable for rock walls with different inclination angles.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel protection equipment, and in particular to a tunnel water and mud disaster prevention device and a use method thereof. Background Art

[0002] With the needs of my country's development, tunnels as underground space projects have been increasingly developed and utilized. When tunnels are excavated, there may be permeable layers or rock fissure development zones. During construction and operation, there are risks of leakage and even water and mud bursts. Water and mud bursts refer to large-scale water and mud bursts caused by adverse geological conditions such as underground rivers, caves, and pressurized water encountered during the construction of underground projects such as tunnels. Generally, water, silt, and mud and sand are used as carriers to rapidly burst out. It is one of the most serious geological disasters in tunnel construction. The mechanical effects of groundwater include hydrostatic pressure and dynamic water pressure. Both effects can cause hydraulic fracturing of the rock mass, increase the chain of fractures, increase the opening degree, thereby increasing the permeability and breaking through the local water barrier effect, thus forming water and mud bursts. In addition, the groundwater pressure is high, there is also adverse geology, and the tunnel Generally, tunnels are long, large, and deep, and the surrounding rock conditions along the way vary greatly. When tunnels pass through bad geology such as karst caves, fault fracture zones or contact zones, underground rivers, etc., water and mud bursts are particularly prone to occur. Excessive excavation footage is the main cause of water and mud bursts. Water and mud bursts are sudden and huge, causing many casualties and large economic losses. If the geological conditions of the tunnel are complex and the water supply of the hydrogeological unit is sufficient, there will be a large amount of water bursts and high pressure, and a large amount of sediment will be carried during the water and mud bursts, increasing the danger and difficulty of rescue. Therefore, timely and effective treatment methods for such problems as water and mud bursts are increasingly receiving attention from relevant parties.

[0003] For areas with developed rock fissures or strong permeability encountered during tunnel construction, cast-in-place concrete dams are usually used for disaster prevention and rescue, and then grouting and other methods are used to stop water in the seepage zone. Although this water retaining structure can play a role in retaining water, the construction of reinforced concrete dams requires a large investment, and the construction of concrete structure dams takes a long time. It cannot meet the dangerous situation of high water gushing speed, and it cannot block water as soon as there is water; and when the dangerous situation is eliminated, the disaster prevention and water retaining structure needs to be dismantled, which not only wastes construction time but also causes damage to the existing tunnel segments, and even affects the safe use of the tunnel. This technology has the following problems and defects: 1. The construction cost of the existing tunnel water gushing and mud gushing disaster prevention and disposal structure is high, the cycle is long, and it cannot block water as soon as there is water. 2. The existing disaster prevention and water retaining structure is complicated to dismantle, which not only wastes construction time but also causes damage to the existing tunnel segments, and even affects the safe use of the tunnel.

[0004] The Chinese invention patent application with application announcement number CN112727548A discloses a device for blocking mud and water inrush in a tunnel. The device is provided with a device body on a base, the device body is fixed by a fixing plate and a support rod, the base is fixed to the ground by fixing nails, and an airbag provided on the device body is used for blocking. The Chinese invention patent application with application announcement number CN113944508A discloses a device for blocking mud inrush in a tunnel. The device includes a housing and a mudguard rotatably mounted on one side of the housing. The mudguard is provided with an airbag. The mudguard is driven to flip upward by a slide plate, a connecting rod, a motor, an air pump and other devices. The above two devices do not need to use reinforced concrete dams to block gushing water and mud, but both have the following problems: 1. It is impossible to block according to the inclination angle and inclination direction of the rock wall, and can only block vertical rock walls. Facing the complex underground environment, the effect is poor during actual use; 2. The base is only fixed to the ground by fixing nails. The whole device is not firmly fixed and is easy to move, making the airbag lose its blocking effect; 3. The rotation of the baffle is manually controlled. Once the operation is improper, it will threaten the safety of life and property; 4. The pressure of the airbag cannot be supplied according to the specific situation, and the airbag support force may be insufficient or excessive. Summary of the invention

[0005] The purpose of the present invention is to provide a tunnel water and mud disaster prevention device which can automatically adjust the blocking angle and has a good blocking effect, and a method for using the device.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tunnel water and mud disaster prevention device, comprising a baffle and a movable base, one end of the base is hinged to the baffle, the side of the baffle close to the base is connected to the base through a cylinder, the cylinder controls the rotation of the baffle through a telescopic piston rod, an air bag is arranged on the side of the baffle away from the base, a gas generator is arranged in the baffle, the reaction gas in the gas generator is filled into the air bag, and a fixing piece is arranged on the base to fix the base to the ground;

[0007] The disaster prevention device also includes an external control terminal and a controller. The external control terminal analyzes the inclination angle and inclination direction of the rock wall and sends instructions to the controller. The controller controls the extension and retraction of the cylinder piston rod according to the instructions sent by the external control terminal to make the baffle fit the rock wall.

[0008] Furthermore, the peripheral control terminal collects images through a camera installed on the base, and uses a positioning software program to analyze the inclination angle and inclination direction of the rock wall according to the collected images.

[0009] Furthermore, the disaster prevention device also includes a reactant mass conveying device, which conveys a corresponding mass of reactants to the gas generator according to the required mass of reactants calculated by the external control terminal.

[0010] Furthermore, the fixing member includes a drill rig fixed on the base and a drill bit connected to the drill rig, and the drill rig controls the drill bit to penetrate the base and drill into the ground to fix the base on the ground.

[0011] Furthermore, the airbag includes a spherical airbag arranged in the middle of the baffle and a circle of strip airbags arranged at the edge of the baffle.

[0012] Furthermore, the outer side of the spherical airbag is wrapped with a wear-resistant rubber layer.

[0013] A method for using a tunnel water and mud disaster prevention device comprises the following steps:

[0014] Move the disaster prevention device to the position where the rock wall needs to be blocked;

[0015] The tilt direction and tilt angle of the rock wall are calculated through the external control terminal. According to the tilt direction, the disaster prevention device is controlled to face the rock wall that needs to be blocked. According to the tilt angle, the cylinder piston is controlled by the controller to fit the baffle to the rock wall.

[0016] Fix the disaster prevention device to the ground;

[0017] The peripheral control terminal calculates the required reactant mass and controls the reactant mass delivery device to deliver the reactant to the gas generator;

[0018] Pulling the ignition cord causes the igniter to trigger the reactants inside the gas generator to generate gas, which enters the air bag to support and block the rock wall.

[0019] Furthermore, the peripheral control terminal calculates the rock wall inclination angle including:

[0020] With the disaster prevention device as the origin O, the camera is used to collect images in two directions perpendicular to each other on the horizontal plane facing the rock wall. The two directions are the X axis and the Y axis. The built-in positioning software program is used to analyze the inclination angle of the rock wall on the X axis and the Y axis respectively. The algorithm is as follows:

[0021] c1=(b1+a) / 2+(b1-b2)

[0022] c2=c1+(b1-b3) / 2

[0023] c3=c2+(b1-b4) / 3

[0024] c4=c3+(b1-b5) / 4

[0025] …

[0026] c n-1 =c n-2 +(b1-b n ) / (n-1)

[0027] c n =c n-1 +(b1-b n+1 ) / n

[0028] In summary n =(b1+a) / 2+(b1-b2)+(b1-b3) / 2+(b1-b4) / 3+……+(b1-b n+1 ) / n

[0029] Among them, a is the historical average of the inclination angles of the rock wall on the Z axis and the Y axis; b1 is the first execution inclination angle of the baffle, b n is the nth execution tilt angle of the baffle; c1 is the first tilt angle instruction value of the controller, c n is the nth tilt angle command value of the controller, that is, the tilt angle of the rock wall on the X-axis or Y-axis;

[0030] The calculated inclination angle c of the rock wall on the X axis n Note that α is the inclination angle of the rock wall on the Y axis. n Denoted as β, according to Obtain the overall inclination angle θ of the rock wall that needs to be blocked.

[0031] Furthermore, calculating the inclination direction of the rock wall includes: obtaining the intersection points of the rock wall with the X-axis and the Y-axis according to α and β, and the direction of the origin O perpendicular to the line connecting the two intersection points is the inclination direction of the rock wall.

[0032] Further, the calculation of the reactant mass includes:

[0033] The water velocity, seepage pressure and dynamic water pressure at the tunnel water and mud bursting point are tested to obtain the theoretical total air pressure value P1 required for water and mud bursting treatment;

[0034] The peripheral control terminal uses the detected results to calculate the mass of reactants that the reactant mass delivery device needs to deliver. The airbag can provide a supporting force P2=P1-P0 for the rock wall, where P0 is the standard atmospheric pressure.

[0035] Beneficial effects of the present invention:

[0036] 1. The present invention uses an external control terminal to accurately calculate the inclination angle and inclination direction of the rock wall, and uses a controller to control the cylinder, so that the air bag on the baffle has a good fit with the rock wall, which can effectively block mud and water gushing.

[0037] 2. The present invention rotatably connects the base with the baffle, and controls the rotation of the baffle through a cylinder, which is suitable for rock walls with different inclination angles.

[0038] 3. The present invention utilizes an external control terminal and a controller to remotely control the cylinder piston rod and further control the rotation of the baffle, without manual operation and with good safety.

[0039] 4. The present invention utilizes an external control terminal to calculate the pressure required to stop water and mud gushing, and then controls the mass of reactants delivered by the reactant mass delivery device. On the one hand, it ensures that the supporting force of the airbag is sufficient to stop water and mud gushing, and on the other hand, it reduces the waste of reactants.

[0040] 5. The present invention arranges a drill and a drill bit on the base. When the base needs to be fixed, the drill bit is drilled into the ground, which has a good fixing effect and prevents the air bag from being separated from the rock wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of the present invention;

[0042] Figure 2 It is a schematic diagram of the structure of the airbag of the present invention;

[0043] Figure 3 It is a schematic diagram of the structure of the gas generator, igniter and ignition pull rope of the present invention;

[0044] Figure 4 It is a work flow chart of the present invention;

[0045] Figure 5 The schematic diagram of the present invention for calculating the inclination angle and inclination direction of a rock wall;

[0046] Figure numerals: 1. base; 2. baffle; 3. fixing pin; 4. cylinder; 5. fixing seat; 6. positioning hole; 7. drilling rig; 8. drill bit; 9. spherical airbag; 10. strip airbag; 11. inflation hole; 12. gas generator; 13. igniter; 14. ignition rope; 15. mounting seat; 16. roller. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] like Figure 1 As shown, a device for preventing water and mud bursts in a tunnel comprises a baffle 2 and a movable base 1.

[0049] Mounting seats 15 are provided at the four corners of the lower surface of the base 1, and rollers 16 are installed under the mounting seats 15, so that the base 1 can move on the ground; fixing parts are provided at the four corners of the base 1. In the present embodiment, the fixing parts include a drill rig 7, and the drill rig 7 is connected with a drill bit 8 downwardly. The drill bit 8 can be drilled into the ground by the drill rig 7 to achieve the effect of fixing the base 1. Positioning holes 6 are provided at the four corners of the upper surface of the base 1, and the drill rig 7 is installed in the positioning holes 6; strip mounting grooves extending toward the baffle 2 are provided on both sides of the upper surface of the base 1, and the strip mounting grooves are close to the edge of the base 1. Protective side panels are movably inserted into the inner side of the strip mounting grooves. The specific size of the protective side panels can be selected and used according to actual needs. The movably installed protective side panels can protect both sides of the base 1 when needed.

[0050] The baffle 2 is hinged to one end of the base 1 through a fixing pin 3, and the side of the baffle 2 close to the base 1 is connected to the base 1 through a cylinder 4. The cylinder body of the cylinder 4 is fixed on a fixing seat 5 arranged on the base 1, and the end of the cylinder piston rod is hinged to the baffle 2. The telescopic piston rod of the cylinder 4 can control the rotation of the baffle 2 to adapt to rock walls with different inclination angles. One or more cylinders 4 can be provided. In this embodiment, two cylinders are provided; an air bag is provided on the side of the baffle 2 away from the base 1, such as Figure 2 As shown, the airbag includes a spherical airbag 9 arranged in the middle of the baffle 2 and a circle of strip airbags 10 arranged at the edge of the baffle 2. The outside of the spherical airbag 9 is wrapped with a thickened wear-resistant rubber layer. Four strip airbags 10 are arranged to form a square. The spherical airbag 9 is located in the four strip airbags 10. The outer periphery of the spherical airbag 9 can be secondary sealed by multiple strip airbags 10, which effectively improves the sealing effect.

[0051] like Figure 3 As shown, a gas generator 12, an igniter 13 connected to the gas generator 12, and an ignition pull rope 14 arranged on the igniter 13 are arranged in the baffle 2. By pulling the ignition pull rope 14, the igniter 13 reacts with the reactants inside the gas generator 12 to generate gas with a certain pressure. The gas generated by the gas generator 12 enters the spherical airbag 9 and the strip airbag 10 through the inflation hole 11, and the spherical airbag 9 and the strip airbag 10 block and seal the positions that need to be blocked.

[0052] The disaster prevention device also includes an external control terminal, a controller, and a reactant mass conveying device. The external control terminal collects images through a camera installed on the base 1, and uses a positioning software program to analyze the inclination angle of the rock wall according to the collected images. The external control terminal sends instructions to the controller according to the analysis results of the inclination angle of the rock wall. The controller controls the telescopic length of the cylinder piston rod according to the instructions sent by the external control terminal, so that the baffle 2 fits the rock wall. The reactant mass conveying device conveys the corresponding mass of reactants to the gas generator 12 according to the required reactant mass calculated by the external control terminal; the controller can accurately control the rotation angle of the baffle 2, so that the airbag on the baffle 2 fits tightly with the rock wall to improve the sealing performance. The reactant mass conveying device can accurately convey the reactant to the gas generator 12, which ensures that the supporting force of the airbag is sufficient to block the gushing water and mud on the one hand, and reduces the waste of reactants on the other hand.

[0053] The method for using the tunnel water and mud disaster prevention device comprises the following steps:

[0054] The initial state of the spherical airbag 9 and the strip airbag 10 is a contracted state. When in use, the disaster prevention device is moved to the position where the rock wall needs to be blocked;

[0055] The inclination direction and inclination angle of the rock wall are calculated through the external control terminal, the disaster prevention device is controlled to face the rock wall that needs to be blocked, and the cylinder piston is controlled by the controller to fit the baffle 2 to the rock wall;

[0056] The specific calculation of the inclination direction and inclination angle of the rock wall is:

[0057] With the disaster prevention device as the origin O, the camera is used to collect images in two directions perpendicular to each other on the horizontal plane facing the rock wall, the two directions are the X axis and the Y axis respectively, and the built-in positioning software program is used to analyze the inclination angle of the rock wall on the X axis and the Y axis respectively;

[0058] The specific algorithm for the tilt angle is as follows:

[0059] c1=(b1+a) / 2+(b1-b2)

[0060] c2=c1+(b1-b3) / 2

[0061] c3=c2+(b1-b4) / 3

[0062] c4=c3+(b1-b5) / 4

[0063] …

[0064] c n-1 =c n-2 +(b1-b n ) / (n-1)

[0065] c n =c n-1 +(b1-b n+1 ) / n

[0066] In summary n =(b1+a) / 2+(b1-b2)+(b1-b3) / 2+(b1-b4) / 3+……+(b1-b n+1 ) / n;

[0067] Where a is the historical average of the inclination angles of the rock wall on the Z and Y axes; b1 is the first execution inclination angle of the baffle, b n is the nth execution tilt angle of the blocking plate; c1 is the first tilt angle instruction value of the controller, c n is the nth tilt angle command value of the controller, that is, the calculated tilt angle of the rock wall on the X-axis or Y-axis;

[0068] The historical average value a is the average value calculated based on the values ​​used in the past; since the process of calculating the angle is a process of continuous trial and error to obtain an accurate tilt angle, the nth executed tilt angle corresponds to the nth baffle adjustment process, and the nth tilt angle command value corresponds to the nth command value sent by the controller.

[0069] The calculated inclination angle c of the rock wall on the X axis n Note that α is the inclination angle of the rock wall on the Y axis. n Denoted as β, according to Calculate the overall inclination angle θ of the rock wall that needs to be blocked;

[0070] The intersection points of the rock wall with the X-axis and the Y-axis are obtained according to α and β. The direction perpendicular to the line connecting the two intersection points is the inclination direction of the rock wall.

[0071] Turn on the positioning drill 7 at the four corners of the mobile base 1, and drill the drill bit 8 into the ground to fix the base 1;

[0072] The peripheral control terminal calculates the required reactant mass and controls the reactant mass delivery device to deliver the reactant to the gas generator 1;

[0073] Pulling the ignition rope 14 causes the igniter 13 to react with the reactants inside the gas generator 12 to generate gas of a certain pressure. The gas generated by the gas generator 12 enters the spherical airbag 9 and the strip airbag 10 through the inflation hole 11. The spherical airbag 9 and the strip airbag 10 block and seal the positions that need to be blocked, thereby completing the blocking of the rock wall at the water and mud gushing place.

[0074] The calculation principle of the rock wall inclination angle and inclination direction is as follows Figure 5As shown, the origin O is the position of the disaster prevention device, the X-axis and Y-axis are the two directions of the camera shooting, the X-axis and Y-axis are perpendicular to each other, the Z-axis is the vertical direction, points A, B, and C are the intersections of the rock wall with the Z, X, and Y axes, respectively, then the surface ABC can be regarded as the rock wall, the angle between BA and BO is the apparent inclination angle α of the rock wall on the X-axis, the angle between CA and CO is the apparent inclination angle β of the rock wall on the Y-axis, OD is perpendicular to BC, then the angle between DO and DA is the inclination angle θ of the rock wall, the angle between BC and BO is set to α'; the angle between CB and CO is set to β'.

[0075] According to the following three formulas:

[0076] sinα′=OD / OB=(tanα) / (tanθ);

[0077] sinβ′=OD / OC=(tanβ) / (tanθ);

[0078] sinα′+sinβ′=1;

[0079] Obtain the inclination angle of the rock wall The direction of OD is the inclination direction of the rock wall.

[0080] The required mass of reactants is calculated as follows:

[0081] The water velocity, seepage pressure and dynamic water pressure at the tunnel water and mud bursting point are tested to obtain the theoretical total air pressure value P1 required for water and mud bursting treatment;

[0082] The peripheral control terminal uses the detected results to calculate the mass of reactants that the reactant mass delivery device needs to deliver. The airbag can provide a supporting force P2=P1-P0 for the rock wall, where P0 is the standard atmospheric pressure.

[0083] The peripheral control terminal calculates the quality of the reaction gas through a multi-order matrix. The calculation method includes:

[0084] (a) If any multi-order matrix determined by “0,1” is G r·m , G r·m is a second-order matrix composed of "0,1", which is used to generate redundant data, specifically expressed as:

[0085]

[0086] Where m is the number of file blocks stored in each storage node, and r is the total number of storage nodes in the system;

[0087] (b) According to the row vectors l1, l2, ..., l of the multi-order matrix r·m The number of "1"s in the vector determines the number of XOR calculations required to calculate the check bit based on the vector, and calculates the XOR of any two vectors la , l b The number of digits that are different between them; a With l b Where a and b represent the subscripts of the vector, and 1≤a≤r·m; 1≤b≤r·m, but a≠b;

[0088] (c) If the vector l a If the number of bits with "1" in the vector is k, k-1 operations are required to generate redundant data using this vector.

[0089] After data processing, it is stored in the memory of the peripheral control terminal, and the control method is output at the same time, and the data is recorded and displayed on the display screen.

[0090] The above shows and describes the basic principles and main structural features of the present invention. The present invention is not limited to the above examples. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for using a tunnel water and mud disaster prevention device, characterized in that: The following steps are involved: Move the disaster prevention device to the position where the rock wall needs to be blocked; The inclination direction and inclination angle of the rock wall are calculated by the external control terminal, and the disaster prevention device is controlled to face the rock wall to be blocked according to the inclination direction, and the cylinder piston is controlled by the controller according to the inclination angle to make the baffle (2) fit the rock wall; Fix the disaster prevention device to the ground; The peripheral control terminal calculates the required reactant mass and controls the reactant mass delivery device to deliver the reactant to the gas generator (12); Pulling the ignition cord (14) causes the igniter (13) to trigger the reactants in the gas generator (12) to generate gas, which enters the gas bag to support and block the rock wall; The calculation of the rock wall inclination angle by the peripheral control terminal includes: With the disaster prevention device as the origin O, the camera is used to collect images in two directions perpendicular to each other on the horizontal plane facing the rock wall. The two directions are the X axis and the Y axis. The built-in positioning software program is used to analyze the inclination angle of the rock wall on the X axis and the Y axis respectively. The algorithm is as follows: c1=(b1+a) / 2+(b1-b2) c2=c1+(b1-b3) / 2 c3=c2+(b1-b4) / 3 c4=c3+(b1-b5) / 4 … c n-1 =c n-2 +(b1-b n ) / (n-1) c n =c n-1 +(b1-b n+1 ) / n In summary n =(b1+a) / 2+(b1-b2)+(b1-b3) / 2+(b1-b4) / 3+……+(b1-b n+1 ) / n; Among them, a is the historical average of the inclination angles of the rock wall on the X-axis and Y-axis; b1 is the first execution inclination angle of the baffle, b n is the nth execution tilt angle of the baffle; c1 is the first tilt angle instruction value of the controller, c n is the nth tilt angle command value of the controller, that is, the tilt angle of the rock wall on the X-axis or Y-axis; The calculated inclination angle c of the rock wall on the X axis n Note that α is the inclination angle of the rock wall on the Y axis. n Denoted as β, according to Calculate the overall inclination angle θ of the rock wall that needs to be blocked; Calculating the inclination direction of the rock wall includes: obtaining the intersection of the rock wall with the X-axis and the Y-axis according to α and β, and the direction of the origin O perpendicular to the line connecting the two intersection points is the inclination direction of the rock wall; The calculation of the amount of reactants includes: The water velocity, seepage pressure and dynamic water pressure at the tunnel water and mud bursting point are tested to obtain the theoretical total air pressure value P1 required for water and mud bursting treatment; The peripheral control terminal uses the detected results to calculate the mass of reactants that the reactant mass conveying device needs to convey. The airbag can provide a supporting force of the rock wall P2 = P1-P0, where P0 is the standard atmospheric pressure; The device for preventing water and mud inrush in a tunnel comprises a baffle (2) and a movable base (1), characterized in that one end of the base (1) is hinged to the baffle (2), the side of the baffle (2) close to the base (1) is connected to the base (1) via a cylinder (4), the cylinder (4) controls the rotation of the baffle (2) via a telescopic piston rod, an air bag is arranged on the side of the baffle (2) away from the base (1), a gas generator (12) is arranged inside the baffle (2), the reaction gas in the gas generator (12) is filled into the air bag, and a fixing piece is arranged on the base (1) to fix the base (1) to the ground; The disaster prevention device also includes an external control terminal and a controller. The external control terminal analyzes the inclination angle and inclination direction of the rock wall and sends instructions to the controller. The controller controls the extension and retraction of the cylinder piston rod according to the instructions sent by the external control terminal, so that the baffle (2) fits the rock wall.

2. A method for using a tunnel water and mud disaster prevention device as claimed in claim 1, characterized in that: The peripheral control terminal collects images through a camera installed on the base (1), and uses a positioning software program to analyze the inclination angle and inclination direction of the rock wall based on the collected images.

3. The method for using the tunnel water and mud disaster prevention device according to claim 1, characterized in that: The disaster prevention device also includes a reactant mass conveying device, which conveys a corresponding mass of reactants to the gas generator (12) according to the required mass of reactants calculated by the external control terminal.

4. A method for using a tunnel water and mud disaster prevention device according to any one of claims 1 to 3, characterized in that: The fixing member comprises a drilling machine (7) fixed on the base (1) and a drill bit (8) connected to the drilling machine (7); the drilling machine (7) controls the drill bit (8) to drill into the ground to fix the base (1) on the ground.

5. A method for using a tunnel water and mud disaster prevention device according to any one of claims 1 to 3, characterized in that: The airbag comprises a spherical airbag (9) arranged in the middle of the baffle (2) and a circle of strip-shaped airbags (10) arranged at the edge of the baffle (2).

6. A method for using a tunnel water and mud disaster prevention device as claimed in claim 5, characterized in that: The outer side of the spherical airbag (9) is wrapped with a wear-resistant rubber layer.

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