A support device for coal mine tunnel

Abstract

The present invention relates to a support device for coal mine tunnels applied in the tunnel field, comprising a plurality of support frames and a support guard wall embedded between two adjacent support frames, wherein the outer ends of the support frames are embedded with elastic sensing embedded groups, and through the coordinated cooperation of the elastic sensing embedded groups, the dynamic monitoring support plates, the dynamic sensing groups and the safety status monitoring system, the tunnel can be effectively supported safely while the status of the tunnel can be sensed and monitored. When the tunnel surrounding rock cracks or sinks, the deformation can be sensed in real time and an early warning signal can be triggered, thereby reminding maintenance personnel to check the effectiveness of the support device, promptly check for abnormal causes, ensure the safe operation of the tunnel, and initiate a personnel evacuation procedure according to the early warning level, significantly improving the timeliness of emergency response, thereby constructing a real-time safety assessment and dynamic monitoring system for the tunnel surrounding rock status, and ensuring the safety of the continuous use of the tunnel.

Description

Technical Field

[0001] The present invention relates to a supporting device, in particular to a supporting device for a coal mine tunnel applied in the tunnel field. Background Art

[0002] As a core facility for safe mine production, the coal mine roadway support system effectively prevents geological disasters such as roof collapse, surrounding rock deformation, and gas outbursts. Current mainstream support methods include wooden supports, metal supports, anchor supports, hydraulic self-moving supports, and concrete / rock supports. Engineering technicians must scientifically select an appropriate support solution based on parameters such as the mechanical properties of the rock formation, the distribution of ground stresses, and the service life of the roadway to ensure the stability of the roadway structure. However, traditional support systems still have significant limitations in complex geological conditions. Their lack of structural adaptability and system reliability can easily lead to support failure, which in turn poses a safety hazard.

[0003] In order to solve the problem of poor structural adaptability, a certain support device in the market adopts a telescopic structure and a rigid-flexible conversion design, and has a certain market share.

[0004] The specification of Chinese invention patent CN118375456B discloses a temporary reinforcement support device for a coal mine tunnel during coal mining and excavation, which belongs to the field of coal mining technology. The device comprises a side seat shell, a support shell, a sleeve shell and a main support. The side seat shell and the support shell are both slidably equipped with a sleeve shell. Several retractable support shells are arranged between the two groups of side seat shells, and the two groups of side seat shells and the several groups of support shells are movably connected. A support arm is slidably arranged on the top of the sleeve shell, and the main support is fixedly connected to the side seat shell. By arranging several groups of retractable support shells between the two groups of side seat shells, and assembling liftable sleeve shells and support arms in the side seat shells and the support shells, the temporary support structure is not only easy to fold and transport in the tunnel, but also can adaptively adjust the spacing according to the tunnel width, and support the curved wall top of the tunnel, effectively avoiding the collapse of the wall top caused by uneven force.

[0005] The specification of Chinese invention patent CN112855231B discloses a coal mine underground tunnel support device, including a support mechanism, a protective mechanism is provided at the top of the support mechanism; the protective mechanism includes a plurality of top beams, a bladder is connected between the plurality of top beams, an arched area is formed between the bladders, a support plate is provided on the inner side of the arched area, the support plate and the bladder are arranged in a conformal manner, the support plate and the bladder are in contact with each other, an anchor net is provided on the outer side of the arched area, and the anchor net cover is provided on the outer side of the bladder; a plurality of grouting holes are opened circumferentially on the support plate, the grouting holes pass through the bladder and the anchor net in sequence, and a grouting assembly is detachably connected in the grouting holes; the overall device greatly improves the support performance of the coal mine underground tunnel, and at the same time can avoid the impact of the surrounding rock season on the support device, thereby ensuring the personal safety of the staff.

[0006] While these technologies achieve efficient support through mechanical adaptive adjustment and flexible reinforcement combined with grouting, effectively addressing the lack of adaptability and stability issues inherent in coal mine roadway support structures under complex geological conditions and dynamic environments, in actual engineering applications, the coupling of multiple factors, including geological structural characteristics, mining process parameters, manual operation specifications, environmental erosion effects, and time creep effects, can still lead to cracking and even collapse of the roadway surrounding rock. Therefore, while ensuring that the support device provides a safe load-bearing function, achieving real-time safety assessment and effectiveness monitoring of the roadway surrounding rock state has become one of the key technical bottlenecks that urgently needs to be overcome in the current field of mine support. Summary of the Invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to effectively monitor the status of the coal mine tunnel while achieving the safety support function of the coal mine tunnel, so as to promote the safety of the tunnel application.

[0008] In order to solve the above problems, the present invention provides a support device for coal mine tunnels, comprising a plurality of support frames and a support retaining wall embedded between two adjacent support frames, wherein the outer ends of the support frames are embedded with elastic induction embedded groups;

[0009] A plurality of dynamic monitoring support plates matched with elastic induction inserts are fixedly installed between two adjacent support frames. A sensing cavity is opened in the dynamic monitoring support plate, and a dynamic sensing group is set in the sensing cavity.

[0010] A monitoring controller is fixedly installed on the supporting frame. The monitoring controller is equipped with a safety status monitoring system. The safety status monitoring system includes a safety monitoring processing unit. The input end of the safety monitoring processing unit is connected to the status sensing unit, and the output end of the safety monitoring processing unit is connected to the abnormality warning unit.

[0011] The input end of the state sensing unit is connected to the dynamic sensing group signal, and the output end of the abnormal warning unit is connected to the alarm signal set on the monitoring controller.

[0012] In the above-mentioned support device for coal mine tunnels, deformation can be sensed in real time and an early warning signal can be triggered to remind maintenance personnel to verify the effectiveness of the support device, promptly investigate abnormal causes, ensure the safe operation of the tunnel, and build a real-time safety assessment and dynamic monitoring system for the tunnel surrounding rock status to ensure the safety of the tunnel's continued use.

[0013] As a supplement to this application, the support frame includes a top frame, side wall frames installed at the front and rear ends of the top frame, and fasteners fixedly sleeved at the connection between the side wall frames and the top frame;

[0014] The elastic induction insert group includes a top insert, corner inserts installed at the left and right ends of the top insert, and a side wall insert fixedly installed at the lower end of the corner insert;

[0015] The top insert is embedded in the upper end of the top frame, the side wall insert is embedded in the outer end of the side wall frame, and the corner insert is embedded in the upper side of the outer end of the side wall frame;

[0016] Dynamic monitoring support plates corresponding to the two adjacent top inserts, the two adjacent corner inserts and the two adjacent side wall inserts are connected.

[0017] As a supplement to this application, support cavities are provided in the top insert, corner insert, and sidewall insert, and the support cavities are filled with flow fillers. The lower sides of the left and right ends of the dynamic monitoring support plate are fixedly connected with unidirectional conductive cones connected to the sensing cavity, and the lower ends of the unidirectional conductive cones are inserted into the corresponding support cavities.

[0018] The one-way conducting cone thorn can realize the conduction effect of the flow filler located in the supporting cavity toward the sensing cavity, and the one-way conducting cone thorn can realize the blocking effect of the flow filler located in the sensing cavity toward the supporting cavity.

[0019] As a supplement to this application, the dynamic sensing group includes a pair of dynamic sliders sealed and slidingly arranged in the sensing cavity, and the two dynamic sliders are fixedly connected to a sensing touch rod at one end close to each other. An elastic tension sleeve is fixedly connected between the two sensing touch rods and is slidingly sleeved on the outside of the sensing touch rod. The input end of the status sensing unit is connected to the sensing touch rod signal.

[0020] As a supplement to this application, the input end of the safety monitoring processing unit is further connected to the tunnel parameter setting unit, the load-bearing parameter setting unit and the abnormality classification unit, and the output end of the safety monitoring processing unit is further connected to the support data output unit;

[0021] The input ends of the tunnel parameter setting unit and the load-bearing parameter setting unit are both connected to the data interface signal set on the monitoring controller, the input end of the abnormality grading unit is connected to the status sensing unit signal, and the output end of the support data output unit is connected to the display signal set on the monitoring controller.

[0022] As a further improvement of the present application, the input end of the safety monitoring and processing unit is also connected to a pressure relief sensing unit, and the input end of the pressure relief sensing unit is connected to the pressure probe signal arranged in the sensing cavity. The output end of the safety monitoring and processing unit is also connected to the emergency support control unit, and the output end of the emergency support control unit is connected to the conduction block signal installed in the support cavity, and the flow filler is an electrorheological fluid.

[0023] As a further improvement of the present application, the dynamic monitoring support plate includes a telescopic adaptation sleeve and a direct connection plate fixedly connected to the left and right sides of the telescopic adaptation sleeve. The two dynamic sliders are fixedly connected to an electromagnetic adjustment ring at one end thereof, and the electromagnetic adjustment ring sleeve is arranged on the outside of the elastic tension sleeve. The output end of the safety monitoring processing unit is also connected to the support spacing application unit, and the output end of the support spacing application unit is connected to the electromagnetic adjustment ring signal.

[0024] As a further improvement of the present application, the input end of the safety monitoring processing unit is also connected to a positioning parameter acquisition unit, and the output end of the safety monitoring processing unit is also connected to an abnormal position display unit. The input end of the positioning parameter acquisition unit is respectively connected to the data interface and the status sensing unit signal provided on the monitoring controller, a buzzer is provided on the dynamic monitoring support plate, and the output end of the abnormal position display unit is connected to the buzzer signal.

[0025] In summary, through the coordinated cooperation of the elastic sensing embedded group, dynamic monitoring support plate, dynamic sensing group and safety status monitoring system, the tunnel can be effectively supported safely while sensing and monitoring the status of the tunnel. When the tunnel surrounding rock cracks or sinks, the deformation can be sensed in real time and an early warning signal can be triggered to remind maintenance personnel to check the effectiveness of the support device, promptly check the abnormal causes, ensure the safe operation of the tunnel, and initiate the personnel evacuation procedure according to the early warning level, significantly improving the timeliness of emergency response, thereby building a real-time safety assessment and dynamic monitoring system for the tunnel surrounding rock status to ensure the safety of the continuous use of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an axonometric diagram of the support device of the first to third embodiments of the present application;

[0027] Figure 2 This is a control logic diagram of the safety status monitoring system for the second and third implementation modes of this application;

[0028] Figure 3 Exploded diagram of the support frame, elastic sensing insert and dynamic monitoring support plate of the second and third embodiments of the present application;

[0029] Figure 4 This is a front cross-sectional view of the support frame, elastic sensing insert, and dynamic monitoring support plate of the second and third embodiments of the present application;

[0030] Figure 5 This is a left view of the support frame, elastic sensing insert, and dynamic monitoring support plate in the normal state of the second and third embodiments of the present application;

[0031] Figure 6 For the second and third embodiments of this application Figure 5 A partial enlarged view of the middle part;

[0032] Figure 7 This is a left view of the support frame, elastic sensing insert and dynamic monitoring support plate in abnormal conditions of the second and third embodiments of the present application;

[0033] Figure 8 For the second and third embodiments of this application Figure 7 A partial enlarged view of point B in the middle;

[0034] Figure 9 This is an axonometric diagram of two adjacent support frames in the second and third implementation modes of this application;

[0035] Figure 10 This is the main view of the support device of the second and third embodiments of the present application when installed in a coal mine tunnel.

[0036] Description of the numbers in the figure:

[0037] 1 supporting frame, 11 side wall frame, 12 top frame, 13 fasteners, 2 elastic sensing insert group, 21 top insert, 22 corner insert, 23 side wall insert, 3 dynamic monitoring support plate, 31 telescopic adaptation sleeve, 32 one-way conduction cone thorn, 4 supporting retaining wall, 5 dynamic sensing group, 51 dynamic slider, 52 sensing touch rod, 53 elastic tension sleeve, 6 flow filler. DETAILED DESCRIPTION

[0038] The following describes three implementation methods of the present application in detail with reference to the accompanying drawings.

[0039] The first implementation method:

[0040] Figure 1 A support device for a coal mine tunnel is shown, comprising a plurality of support frames 1 and a support guard wall 4 embedded between two adjacent support frames 1. The support frame 1 comprises a top frame 12, a side wall frame 11 installed at the front and rear ends of the top frame 12, and a fastener 13 fixedly sleeved at the connection between the side wall frame 11 and the top frame 12. The fastener 13 uses bolts to fasten the side wall frame 11 and the top frame 12. The top frame 12 is inserted into the upper end of the side wall frame 11. Combined with the application of the fastener 13, the side wall frame 11 and the top frame 12 can effectively support the entire tunnel. Combined with the raised edges of the outer ends of the side wall frame 11 and the top frame 12 to fix the support guard wall 4, the support for the entire wall surface of the tunnel is achieved, thereby promoting the safety of tunnel application.

[0041] Second implementation method:

[0042] Figure 1 - Figure 10The supporting device for coal mine tunnels is shown, comprising a plurality of supporting frames 1 and a supporting retaining wall 4 embedded between two adjacent supporting frames 1, wherein the outer end of the supporting frame 1 is embedded with an elastic induction embedded group 2;

[0043] A plurality of dynamic monitoring support plates 3 cooperating with the elastic sensing insert groups 2 are fixedly installed between two adjacent support frames 1. A sensing cavity is provided in the dynamic monitoring support plates 3, and a dynamic sensing group 5 is provided in the sensing cavity.

[0044] A monitoring controller is fixedly mounted on the support frame 1. The monitoring controller is equipped with a safety status monitoring system. The safety status monitoring system includes a safety monitoring processing unit. The input end of the safety monitoring processing unit is connected to the status sensing unit, and the output end of the safety monitoring processing unit is connected to the abnormality warning unit.

[0045] The input end of the status sensing unit is connected to the signal of the dynamic sensing group 5, and the output end of the abnormal warning unit is connected to the alarm signal set on the monitoring controller. Through the coordinated cooperation of the elastic sensing embedded group 2, the dynamic monitoring support plate 3, the dynamic sensing group 5 and the safety status monitoring system, the tunnel can be effectively supported safely while sensing and monitoring the status of the tunnel. When the tunnel surrounding rock cracks or sinks, the deformation can be sensed in real time and an early warning signal can be triggered to remind maintenance personnel to check the effectiveness of the support device, promptly check the abnormal causes, ensure the safe operation of the tunnel, and also start the personnel evacuation procedure according to the early warning level, significantly improving the timeliness of emergency response, thereby building a real-time safety assessment and dynamic monitoring system for the tunnel surrounding rock status to ensure the safety of the continuous use of the tunnel.

[0046] Figure 1 、 Figure 3 and Figure 9 The supporting frame 1 is shown to include a top frame 12, side wall frames 11 mounted on the front and rear ends of the top frame 12, and fasteners 13 fixedly sleeved at the connection between the side wall frames 11 and the top frame 12;

[0047] The elastic induction insert group 2 includes a top insert 21, corner inserts 22 installed at the left and right ends of the top insert 21, and a side wall insert 23 fixedly installed at the lower end of the corner insert 22;

[0048] The top insert 21 is embedded in the upper end of the top frame 12, the side wall insert 23 is embedded in the outer end of the side wall frame 11, and the corner insert 22 is embedded in the upper side of the outer end of the side wall frame 11;

[0049] Dynamic monitoring support plates 3 corresponding to them are connected between two adjacent top inserts 21, between two adjacent corner inserts 22, and between two adjacent side wall inserts 23. The cooperation of the support frame 1, the elastic sensing insert group 2 and the dynamic monitoring support plates 3 can effectively support the tunnel and ensure the effectiveness and sustainability of the tunnel application. In addition, through the coordinated application of the dynamic monitoring support plates 3, real-time monitoring of the tunnel surrounding rock can be achieved, thereby ensuring the safety and effectiveness of the tunnel application.

[0050] Figure 4 - Figure 8 It is shown that support cavities are provided in the top insert 21, the corner insert 22 and the side wall insert 23, and the support cavities are filled with fluid filler 6. The fluid filler 6 is filled in the support cavity in a saturated state, so that when pressure is generated in the subsequent support cavity, the support cavity and the sensing cavity are connected. The squeezing effect of the fluid filler 6 can prompt the dynamic slider 51 to resist the elastic force of the elastic tension sleeve 53, so that the elastic tension sleeve 53 contracts, thereby prompting the triggering effect of the two sensing rods 52, thereby realizing the monitoring of the surrounding rock state of the tunnel. The lower sides of the left and right ends of the dynamic monitoring support plate 3 are fixedly connected with unidirectional conductive cone spikes 32 connected to the sensing cavity, and the lower ends of the unidirectional conductive cone spikes 32 are inserted into the corresponding support cavities;

[0051] The unidirectional conducting cone thorn 32 can realize the conduction effect of the flow filler 6 located in the support cavity toward the sensing cavity, and the unidirectional conducting cone thorn 32 can realize the blocking effect of the flow filler 6 located in the sensing cavity toward the support cavity. The unidirectional conducting structure of the unidirectional conducting cone thorn 32 can ensure the triggering effectiveness of the dynamic sensing group 5. The flow filler 6 can be a liquid filler or a gas filler. The liquid filler can be water, insulating oil, electrorheological fluid, etc. The gas filler can be air, inert gas, etc. Through the connection effect of the support cavity in the top insert 21, the corner insert 22 and the side wall insert 23 and the sensing cavity in the dynamic monitoring support plate 3, the dynamic monitoring support plate 3 can effectively realize the synchronous linkage effect of the deformation of the top insert 21, the corner insert 22 and the side wall insert 23, thereby effectively realizing the real-time monitoring effect on the surrounding rock of the tunnel.

[0052] Figure 2 and Figure 5 - Figure 8The dynamic sensing group 5 is shown to include a pair of dynamic sliders 51 that are sealed and slidably arranged in the sensing cavity. The two dynamic sliders 51 are fixedly connected to a sensing touch rod 52 at one end close to each other. An elastic tension sleeve 53 that is slidably sleeved on the outside of the sensing touch rod 52 is fixedly connected between the two sensing touch rods 52. The input end of the state sensing unit is connected to the sensing touch rod 52 signal. The elastic tension sleeve 53 uses its elastic effect to open and separate the two dynamic sliders 51, and forms a dynamic equilibrium state with the pressure of the flow filler 6. Then, when the elastic sensing insert group 2 is subsequently subjected to partial or full extrusion, the flow pressure of the flow filler 6 is effectively used to resist the elasticity of the elastic tension sleeve 53, thereby realizing the triggering effect of the two sensing touch rods 52, and thus effectively realizing the monitoring and warning function of the tunnel surrounding rock, thereby ensuring the safety of continuous use of the tunnel.

[0053] Figure 2 It is shown that the input end of the safety monitoring processing unit is also connected to the tunnel parameter setting unit, the load parameter setting unit and the abnormality classification unit, and the output end of the safety monitoring processing unit is also connected to the support data output unit;

[0054] The input ends of the tunnel parameter setting unit and the load-bearing parameter setting unit are both connected to the data interface signal set on the monitoring controller, the input end of the abnormality grading unit is connected to the status sensing unit signal, and the output end of the support data output unit is connected to the display signal set on the monitoring controller. The setting of each parameter unit can further promote the accuracy of the safety status monitoring system in monitoring the tunnel surrounding rock status, promote the applicability of the safety status monitoring system, and can produce appropriate regulation and monitoring effects according to the actual data of the tunnel and the support device. In addition, the setting of the abnormality grading unit can judge the status of the tunnel at this time according to the number of triggers of the sensing rod 52 in the overall support device, so as to realize the grading of the early warning signal, assist maintenance personnel in making timely and effective emergency measures, and give priority to ensuring personnel safety.

[0055] Figure 1 - Figure 10 The dynamic monitoring support plate 3 includes a telescopic adaptive sleeve 31 and a straight connecting plate fixedly connected to the left and right sides of the telescopic adaptive sleeve 31. The telescopic adaptive sleeve 31 is a corrugated structure. The telescopic adaptive sleeve 31 can produce a deformation effect along its length direction. The length direction is Figure 1 、 Figure 3 and Figure 5 - Figure 9In the left and right directions shown, the two dynamic sliders 51 are fixedly connected to one end thereof with an electromagnetic adjustment ring, and the electromagnetic adjustment ring is sleeved on the outside of the elastic tension sleeve 53. The output end of the safety monitoring processing unit is also connected to the support spacing application unit, and the output end of the support spacing application unit is connected to the electromagnetic adjustment ring signal. The cooperation of the electromagnetic adjustment ring, the support spacing application unit and the telescopic adaptation sleeve 31 can effectively realize the applicability of the dynamic monitoring support plate 3 to tunnels of different specifications, further increase the application scope of the support device, and while ensuring the effectiveness of the support for tunnels of different specifications, it can also realize the controllability of the tunnel surrounding rock monitoring, thereby realizing different safety monitoring needs, promoting monitoring sensitivity, fully ensuring the safety of tunnel applications, and promoting the actual benefits of the application of the support device.

[0056] Figure 2 It is shown that the input end of the safety monitoring processing unit is also connected to the positioning parameter acquisition unit, and the output end of the safety monitoring processing unit is also connected to the abnormal position display unit. The input end of the positioning parameter acquisition unit is respectively connected to the data interface and the status sensing unit signal provided on the monitoring controller. A buzzer is provided on the dynamic monitoring support plate 3, and the output end of the abnormal position display unit is connected to the buzzer signal. The setting of the positioning parameter acquisition unit and the abnormal position display unit can simultaneously issue a response to the abnormal position when the support device issues an abnormal warning, which can not only promote the effectiveness of the maintenance personnel's inspection of the support device and promote the efficiency of their investigation of the inducement, but also effectively remind the evacuated personnel to avoid abnormal positions and promote the safety of evacuation.

[0057] Figure 1 - Figure 10 It is shown that when the support device is installed on the tunnel wall using cement and concrete, the dynamic monitoring support plate 3 is stretched or compressed according to the size of the tunnel and the supporting retaining wall 4, so that the telescopic adaptation sleeve 31 can produce corresponding deformation under the action of the direct connection plate, changing the length of the dynamic monitoring support plate 3, so that it can be well adapted to the supporting retaining wall 4 of different size requirements, ensuring the connection monitoring function between the two adjacent support frames 1, and the power support of the monitoring controller and the support device can be selected from the power supply of the tunnel operating equipment, or other power supplies on the mine, or directly connected to the power supply system on the mine.

[0058] After the support device is installed, the technician inputs relevant parameter data into the tunnel parameter setting unit, the load-bearing parameter setting unit and the positioning parameter acquisition unit through the data interface of the monitoring controller. The technician inputs relevant parameter data such as the size data of the tunnel, the thickness data of the surrounding rock, the service life data of the tunnel and the application environment data of the tunnel into the tunnel parameter setting unit. The technician inputs relevant parameter data such as the size data of the support device, the size data of the supporting retaining wall 4, the length data of the dynamic monitoring support plate 3 and the durability data of the support device into the load-bearing parameter setting unit. The technician inputs relevant position data of the dynamic monitoring support plate 3 set in the tunnel and relevant parameter data such as the trigger positioning information of the sensing rod 52 located in the corresponding dynamic monitoring support plate 3 into the positioning parameter acquisition unit. The tunnel parameter setting unit, the load-bearing parameter setting unit and the positioning parameter acquisition unit convert the data they receive and transmit them to the safety monitoring processing unit.

[0059] Since the sensing cavity in the dynamic monitoring support plate 3 is connected to the corresponding supporting cavity through the unidirectional conductive cone thorn 32, after the connection, the fluid filler 6 in the supporting cavity will enter the sensing cavity through the unidirectional conductive cone thorn 32, and the fluid fillers 6 at both ends will produce an initial squeezing effect on the dynamic slider 51, so that the elastic tension sleeve 53 produces a certain contraction effect, and maintains the separation effect on the two sensing touch rods 52, thereby realizing a dynamic balance effect between the supporting cavity, the sensing cavity and the elastic tension sleeve 53; when the length of the dynamic monitoring support plate 3 remains unchanged, the elastic tension of the elastic tension sleeve 53 can effectively maintain the triggering distance of the sensing touch rod 52; when the length of the dynamic monitoring support plate 3 increases, the sensing cavity increases. , causing the pressure of the fluid filler 6 entering the sensing cavity to decrease, so that the elastic tension sleeve 53 does not produce contraction deformation, or the contraction deformation is smaller than the contraction deformation of the elastic tension sleeve 53 when the length of the dynamic monitoring support plate 3 remains unchanged, thereby increasing the triggering distance between the two sensing touch rods 52 and reducing its triggering sensitivity; when the length of the dynamic monitoring support plate 3 is shortened, the sensing cavity is reduced, causing the pressure of the fluid filler 6 entering the sensing cavity to increase, causing the elastic tension sleeve 53 to produce contraction deformation, and its contraction deformation is greater than the contraction deformation of the elastic tension sleeve 53 when the length of the dynamic monitoring support plate 3 remains unchanged, or causing the two sensing touch rods 52 to abut against each other, which is very likely to cause false triggering of the early warning in subsequent applications;

[0060] The safety monitoring processing unit processes and calculates the trigger distance of the spacing between the two dynamic sliders 51 located in the same dynamic monitoring support plate 3 based on the relevant parameter data transmitted by the tunnel parameter setting unit and the load-bearing parameter setting unit, so as to ensure the effectiveness of its subsequent triggering action. When it is judged that the spacing between the two dynamic sliders 51 under the elastic tension of the elastic tension sleeve 53 is maintained, the safety monitoring processing unit does not generate a regulating action; when it is judged that the spacing between the two dynamic sliders 51 under the elastic tension of the elastic tension sleeve 53 needs to be reduced, the safety monitoring processing unit will transmit the regulating signal to the support spacing applicable unit, so that an electromagnetic force of attraction is generated between the two electromagnetic adjustment rings, which resists the elastic tension of the elastic tension sleeve 53, causing the elastic tension sleeve 53 to contract, reducing the spacing between the two dynamic sliders 51, and maintaining the electromagnetic force at this time. , thereby maintaining the triggering distance between the two sensing touch rods 52, which can effectively ensure the sensitivity of the triggering of the sensing touch rod 52 after the length of the dynamic monitoring support plate 3 is stretched, thereby ensuring the timeliness and effectiveness of the triggering warning; when it is determined that the distance between the two dynamic sliders 51 under the elastic tension of the elastic tension sleeve 53 needs to be extended, the safety monitoring processing unit will transmit the control signal to the support spacing application unit, so that a repulsive electromagnetic force is generated between the two electromagnetic adjustment rings, and the elastic tension of the elastic tension sleeve 53 is promoted, so that the elastic tension sleeve 53 continues to produce elongation deformation, thereby increasing the distance between the two dynamic sliders 51, and maintaining the size of the electromagnetic force at this time to ensure the effective triggering distance between the two sensing touch rods 52, which can ensure the effectiveness of the triggering of the sensing touch rod 52 after the dynamic monitoring support plate 3 is contracted, thereby reducing the error of the triggering warning.

[0061] During the continuous use of the support device, local deformation such as cracking or sinking of the surrounding rock of the tunnel will produce an extrusion effect on the top insert 21, corner insert 22 and side wall insert 23 at the corresponding position, so that the top insert 21, corner insert 22 and side wall insert 23 produce extrusion deformation, so that the flow filler 6 in the support cavity flows to the sensing cavity of the corresponding dynamic monitoring support plate 3 through the unidirectional conductive cone thorn 32, increasing the pressure in the dynamic monitoring support plate 3, thereby producing an extrusion effect on the dynamic slider 51, and then the two dynamic sliders 51 approach each other, and the elastic tension sleeve 53 The state sensing unit detects the trigger data and transmits it to the safety monitoring processing unit. The safety monitoring processing unit controls the abnormal warning unit to start the alarm according to the squeeze trigger signal, and sends an alarm signal to the maintenance personnel and the personnel in the tunnel, urging the maintenance personnel to perform emergency maintenance on the tunnel and the support device to ensure the safety of the tunnel operation. The state sensing unit also transmits the trigger data of the sensing rod 52 to the positioning parameter acquisition unit, which identifies the position of the triggered sensing rod 52 and then The data is transmitted to the safety monitoring processing unit. The safety monitoring processing unit controls the abnormal position display unit to activate the buzzer based on the trigger position data of the sensing rod 52, alerting maintenance personnel of the abnormal position and reminding personnel in the tunnel to stay away from the abnormal position, thereby ensuring their safety and the safety of the subsequent personnel evacuation process. At the same time, the status sensing unit also transmits the trigger quantity data of the sensing rod 52 to the abnormality classification unit. The abnormality classification unit classifies the abnormality at this time based on the trigger quantity data. When the sensing rod 52 is triggered locally, it is judged as a maintainable level abnormality. When the sensing rod 52 is triggered in multiple locations, it is judged as a dangerous level abnormality. After obtaining the classification data, the safety monitoring processing unit sends warning data and abnormality level data to maintenance personnel and personnel in the tunnel through the abnormality warning unit and the support data output unit, so that maintenance personnel or personnel in the tunnel can promptly process the support device based on the relevant data and evacuate personnel in the tunnel in a timely manner. While ensuring the support effectiveness and safety of the support device, it can also effectively improve the efficiency of emergency response, take emergency measures in a timely manner, improve the efficiency of personnel evacuation, and promote the safety of tunnel application.

[0062] The third implementation method:

[0063] Figure 1 - Figure 10The figure shows a support device for coal mine tunnels. The input end of the safety monitoring and processing unit is also connected to a pressure relief sensing unit. The input end of the pressure relief sensing unit is connected to the pressure probe signal arranged in the sensing cavity. The output end of the safety monitoring and processing unit is also connected to the emergency support control unit. The output end of the emergency support control unit is connected to the conduction block signal installed in the support cavity. The flow filler 6 is an electrorheological fluid. The cooperation between the pressure relief sensing unit and the emergency support control unit can, on the one hand, issue an emergency reminder in time when the dynamic monitoring support plate 3 is damaged, thereby ensuring the effectiveness of abnormal monitoring at the position of the subsequent damaged dynamic monitoring support plate 3. On the other hand, when the surrounding rock of the tunnel cracks or sinks, resulting in a large number of dynamic monitoring support plates 3 and the dynamic sensing group 5 in the dynamic monitoring support plate 3 issuing an early warning signal, the flow filler 6 as the electrorheological fluid can be energized in time to convert it from liquid to solid, thereby promoting its compressive resistance, increasing its support effect on the tunnel surrounding rock, slowing down the tunnel collapse speed to a certain extent, and gaining a glimmer of hope for the evacuated personnel, further increasing the safety guarantee function of the support device.

[0064] Figure 1 - Figure 10 It is shown that during the application of the support device, when deformation conditions such as cracking or sinking of the tunnel surrounding rock directly act on the dynamic monitoring support plate 3 and cause the dynamic monitoring support plate 3 to be damaged, the pressure probe in the dynamic monitoring support plate 3 can timely sense the pressure relief data, and then transmit the pressure relief data to the pressure relief sensing unit. The pressure relief sensing unit transmits the data to the safety monitoring processing unit. The safety monitoring processing unit controls the abnormal warning unit to activate the alarm according to the pressure relief data, and controls the display to display the pressure relief data through the support data output unit, so that maintenance personnel can obtain early warning data in time and take emergency measures in time. The safety monitoring processing unit can trigger the abnormality according to the pressure relief sensing unit and the status sensing unit when the abnormality grading unit does not transmit a dangerous level abnormality based on the data transmitted. The safety monitoring processing unit can trigger the abnormality according to the pressure relief abnormality and the extrusion, and send an emergency evacuation warning signal to the maintenance personnel and the personnel in the tunnel through the abnormal warning unit and the support data output unit, so as to avoid the risk caused by local or complete collapse of the tunnel and ensure the safety of the personnel in the tunnel.

[0065] In addition, when the safety monitoring and processing unit sends an emergency evacuation warning signal to the maintenance personnel and personnel in the tunnel through the abnormal warning unit and the support data output unit, the safety monitoring and processing unit will also send a control instruction to the emergency support control unit, so that the emergency control unit will energize the conductive block in the support cavity, so that the flow filler 6 as the electrorheological fluid will undergo a morphological transformation under the action of electricity, thereby increasing its compressive resistance, further supporting and strengthening the tunnel, effectively delaying the speed of tunnel collapse, providing timeliness for personnel evacuation, and further promoting the safety protection function of the support device.

[0066] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A support device for a coal mine tunnel, characterized by: It comprises a plurality of support frames (1) and a support retaining wall (4) embedded between two adjacent support frames (1), wherein the outer ends of the support frames (1) are embedded with elastic induction embedding groups (2); A plurality of dynamic monitoring support plates (3) cooperating with the elastic sensing insert groups (2) are fixedly installed between two adjacent support frames (1), wherein a sensing cavity is provided in the dynamic monitoring support plates (3), and a dynamic sensing group (5) is provided in the sensing cavity; A monitoring controller is fixedly mounted on the support frame (1), wherein the monitoring controller is equipped with a safety status monitoring system, wherein the safety status monitoring system comprises a safety monitoring processing unit, wherein the input end of the safety monitoring processing unit is connected to a status sensing unit, and the output end of the safety monitoring processing unit is connected to an abnormality warning unit; The input end of the state sensing unit is connected to the dynamic sensing group (5) signal, and the output end of the abnormal warning unit is connected to the alarm signal provided on the monitoring controller; The elastic sensing insert group (2) includes a top insert (21), corner inserts (22) installed at the left and right ends of the top insert (21), and a side wall insert (23) fixedly installed at the lower end of the corner insert (22); The top insert (21), the corner insert (22) and the side wall insert (23) are each provided with a support cavity, the support cavity being filled with a fluid filler (6), and the lower sides of the left and right ends of the dynamic monitoring support plate (3) are both fixedly connected with a one-way conducting cone spike (32) connected to the sensing cavity, and the lower ends of the one-way conducting cone spike (32) are inserted into the corresponding support cavity; The one-way conducting cone thorn (32) can achieve a conduction effect on the flow filler (6) located in the support cavity toward the sensing cavity, and the one-way conducting cone thorn (32) can achieve a blocking effect on the flow filler (6) located in the sensing cavity toward the support cavity; The dynamic sensing group (5) comprises a pair of dynamic sliders (51) sealed and slidably arranged in a sensing cavity, the two dynamic sliders (51) are fixedly connected to a sensing touch rod (52) at one end close to each other, an elastic tension sleeve (53) is fixedly connected between the two sensing touch rods (52) and is slidably sleeved on the outside of the sensing touch rod (52), and the input end of the state sensing unit is connected to the sensing touch rod (52) signal.

2. A coal mine tunnel support device according to claim 1, characterized in that: The support frame (1) comprises a top frame (12), a side wall frame (11) mounted at the front and rear ends of the top frame (12), and a fastener (13) fixedly sleeved at the connection between the side wall frame (11) and the top frame (12); The top insert (21) is embedded in the upper end of the top frame (12), the side wall insert (23) is embedded in the outer end of the side wall frame (11), and the corner insert (22) is embedded in the upper side of the outer end of the side wall frame (11); Dynamic monitoring support plates (3) corresponding to and matching the two adjacent top inserts (21), the two adjacent corner inserts (22), and the two adjacent side wall inserts (23) are connected.

3. The support device for a coal mine tunnel according to claim 1, characterized in that: The input end of the safety monitoring and processing unit is also connected to a pressure relief sensing unit, and the input end of the pressure relief sensing unit is connected to a pressure probe signal arranged in the sensing cavity. The output end of the safety monitoring and processing unit is also connected to an emergency support control unit, and the output end of the emergency support control unit is connected to a conduction block signal installed in the support cavity, and the flow filler (6) is an electrorheological fluid.

4. The support device for a coal mine tunnel according to claim 1, characterized in that: The dynamic monitoring support plate (3) includes a telescopic adaptation sleeve (31) and a straight connection plate fixedly connected to the left and right sides of the telescopic adaptation sleeve (31). The two dynamic sliders (51) are fixedly connected to an electromagnetic adjustment ring at one end thereof, and the electromagnetic adjustment ring is sleeved outside the elastic tension sleeve (53). The output end of the safety monitoring processing unit is also connected to a support spacing application unit, and the output end of the support spacing application unit is connected to the electromagnetic adjustment ring signal.

5. The support device for a coal mine tunnel according to claim 1, characterized in that: The input end of the safety monitoring processing unit is further connected to the tunnel parameter setting unit, the load-bearing parameter setting unit and the abnormality classification unit, and the output end of the safety monitoring processing unit is further connected to the support data output unit; The input ends of the tunnel parameter setting unit and the load-bearing parameter setting unit are both connected to the data interface signal set on the monitoring controller, the input end of the abnormality grading unit is connected to the status sensing unit signal, and the output end of the support data output unit is connected to the display signal set on the monitoring controller.

6. The support device for a coal mine tunnel according to claim 1, characterized in that: The input end of the safety monitoring processing unit is also connected to a positioning parameter acquisition unit, and the output end of the safety monitoring processing unit is also connected to an abnormal position display unit. The input end of the positioning parameter acquisition unit is respectively connected to a data interface and a state sensing unit signal provided on the monitoring controller. A buzzer is provided on the dynamic monitoring support plate (3), and the output end of the abnormal position display unit is connected to the buzzer signal.

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