Mine gushing water plugging device

Abstract

The invention provides a mine water gushing plugging device, and relates to the technical field of mine safety equipment, and the mine water gushing plugging device comprises a plugging sleeve which can change in shape according to the stress state; the adjusting structure is arranged in the plugging sleeve and can adjust the diameter of the plugging sleeve; a slurry conveying pipe penetrating through the blocking sleeve is further arranged in the adjusting structure and used for conveying slurry. According to the device, the problem that the plugging sleeve is not tightly attached to the inner wall of the water gushing channel is solved through the expansion capacity of the plugging sleeve, and the problem of setting a solidification layer is solved through the slurry conveying pipe arranged in the plugging sleeve.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine safety equipment, and in particular relates to a mine water inrush blocking device. Background Art

[0002] The sealing technologies for mine water gushing mainly include mechanical sealing and grouting sealing. Mechanical sealing usually adopts prefabricated concrete structure or metal baffle rigid materials, and seals water gushing by bolt fixing or mechanical support. Grouting sealing technology is to inject cement slurry or chemical slurry materials into the water gushing area, and form a sealing body through the solidification of the slurry. Although it can fit tightly with irregular water gushing channels, when the water flow is large and the flow rate is fast, the slurry is easily washed away by the water flow, and it is difficult to form a stable sealing layer. In addition, the grouting process is time-consuming and cannot meet the rapid sealing needs in emergency water gushing situations, and thus cannot meet the needs of users.

[0003] In summary, the defects existing in the prior art are: lack of a device that can not only fit tightly with the irregular water gushing channel but also form a stable sealing layer after grouting. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides a mine water inrush blocking device.

[0005] The present invention is implemented as follows: a mine water inrush blocking device comprising: The plugging sleeve can change shape according to the stress state; An adjusting structure is provided in the plugging sleeve and is capable of adjusting the diameter of the plugging sleeve; The regulating mechanism also includes a slurry delivery pipe penetrating the blocking sleeve for delivering slurry.

[0006] In some embodiments, the adjustment structure is connected to the slurry delivery pipe via a connection structure, and the slurry delivery pipe can operate the adjustment structure by rotating itself.

[0007] In some embodiments, the regulatory structure comprises: Screw; A movable column, wherein an inner wall of the movable column is provided with an internal thread that meshes with the external thread of the screw rod and is capable of sliding along the axial direction of the screw rod, wherein the axial direction of the screw rod is consistent with the expansion or contraction direction of the plugging sleeve; and / or; The connection structure includes: A driving bevel gear is provided on the outer surface of the slurry conveying pipe; The driven bevel gear protrudes from the outer surface of the screw rod and meshes with the driving bevel gear.

[0008] In some embodiments, at least two screw rods are provided, and correspondingly, at least two movable columns are also provided.

[0009] In some embodiments, a locking mechanism is provided on the slurry delivery pipe, and the locking mechanism can lock the slurry delivery pipe and restrict its rotation.

[0010] In some embodiments, the locking mechanism includes: pawl; The ratchet protrudes and is arranged around the surface of the exposed section of the slurry conveying pipe. The ratchet is limited in one direction by a pawl.

[0011] In some embodiments, an active backflow prevention mechanism is connected to the end of the plugging sleeve to actively prevent grouting backflow.

[0012] In some embodiments, the active backflow prevention mechanism includes: Cylinder; worm gear set; a hollow plate, which is blocked in the cylinder and divides the cylinder into two independent spaces; the hollow plate is provided with at least one communication hole, and the two independent spaces of the cylinder are connected through the communication hole; A movable plate is concentrically wrapped inside the hollow plate. The shape of the movable plate is the same as that of the connecting hole and can be switched between a first position and a second position. In the first position, the movable plate is blocked at the connecting hole of the hollow plate; in the second position, the hollow plate and the connecting hole do not overlap in the direction of slurry flow.

[0013] In some embodiments, further comprising: A plug is connected to the end of the plug sleeve away from the water inflow plugging working area, and the outer diameter of the plug is not less than the maximum outer diameter of the plug sleeve after expansion; A quick connection structure is connected to the plug and is used to quickly fix the plug on the mine rock mass.

[0014] In some embodiments, the quick connect structure comprises: shelf; Screws, the screws penetrating the shelf and the plug and connecting the shelf and the plug, wherein at least three screws are provided and each screw has a self-tapping thread; The synchronous wheel is sleeved on each of the screw rods and meshes with the screw thread. The synchronous wheel is rotatably connected to the plug, and two adjacent synchronous wheels are driven by a synchronous belt.

[0015] The present invention provides a mine water inrush plugging device, comprising a plugging sleeve, which can change shape according to the stress state, thereby adapting to different shapes of mine water inrush rock channels and achieving efficient plugging thereof. At the same time, an adjustment structure is also provided within the plugging sleeve, so that an operator can actively adjust the specific expansion degree of the plugging sleeve through the adjustment structure. By changing the material and thickness of the plugging sleeve, combined with the active adjustment function of the adjustment structure, the plugging sleeve can be actively filled into the cracks of the mine water inrush channel and fit the uneven rock wall as much as possible, thereby greatly improving the plugging sleeve's plugging effect on water inrush. The regulating mechanism also includes a slurry pipe for conveying slurry. After the plugging sleeve performs emergency sealing on the water gushing channel, the slurry pipe placed in the regulating mechanism and penetrating the plugging sleeve delivers slurry into the water gushing channel, and the water gushing channel is sealed by utilizing the solidification property of the chemical slurry. During the solidification period of the slurry, the plug acts to tightly seal the edge of the water gushing channel to prevent the outflow of chemical slurry, which causes gaps in the filling body formed by the slurry and causes secondary small water gushing. This device solves the problem of loose fit with the inner wall of the water gushing channel through the expansion ability of the plugging sleeve, and solves the problem of setting a solidification layer through the slurry pipe built therein.

[0016] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a mine water inrush blocking device provided in an embodiment of the present application; Figure 2 This is a structural diagram of a connection structure and an adjustment structure of a mine water inrush blocking device provided in an embodiment of the present application; Figure 3 This is a schematic structural diagram of a locking mechanism and an active backflow prevention device of a mine water inrush blocking device provided in an embodiment of the present application; Figure 4 This is a schematic diagram of the specific structure of an active backflow prevention device of a mine water inrush blocking device provided in an embodiment of the present application; Figure 5 It is a structural schematic diagram of a quick connection structure of a mine water inrush plugging device provided in an embodiment of the present application.

[0018] Explanation of the accompanying reference numerals: 10, plugging sleeve; 20, adjusting structure; 21, slurry delivery pipe; 22, screw; 23, movable column; 30, connecting structure; 31, driving bevel gear; 32, driven bevel gear; 40, locking mechanism; 41, pawl; 42, ratchet; 50, active backflow prevention mechanism; 51, cylinder; 52, worm gear group; 53, hollow plate; 54, movable plate; 60, plug; 70, quick connection structure; 71, shelf; 72, screw; 73, synchronous wheel; 74, synchronous belt. DETAILED DESCRIPTION

[0019] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0021] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0022] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0024] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0025] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0026] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0029] The mine water inrush sealing device is an important mine safety device that uses high-pressure grouting technology to waterproof and seal mine water inrush channels. It usually includes a grouting pump, a check valve, an orifice pipe and a slurry mixer, and is used in conjunction with a slag and gravel layer as the grouting basis.

[0030] In the following specific embodiments, a mine water gushing sealing device is provided that can not only be used for the emergency sealing of water gushing channels in mine rock masses, but can also be used in similar engineering environments. For example, it can be used for the emergency sealing of water gushing channels on the side of foundation pit projects in rocky terrain; for example, it can be used for the emergency sealing of underground water gushing channels in tunnel projects.

[0031] The following is an illustrative description of a mine water inrush blocking device provided by the present application in combination with various embodiments.

[0032] In some embodiments, reference Figure 1 A mine water inrush plugging device includes: a plugging sleeve 10, which can change shape according to the stress state. It should be noted that, depending on the different material properties, structures and specific construction conditions, the plugging sleeve 10 can be disposable or can be used multiple times. For example, in the requirement of multiple circulation use, the plugging sleeve 10 is a double-layer structure, the inner layer of which is a silicone sealing bag, and the outer layer is wrapped with a high-strength aramid woven mesh, so that the plugging sleeve 10 has the characteristics of wear resistance and corrosion resistance while being able to withstand high pressure, so as to realize the multiple circulation use of the plugging sleeve 10 part.

[0033] The plugging sleeve 10 is provided with an adjusting structure 20 for adjusting the diameter of the plugging sleeve 10, that is, the adjusting structure 20 has the ability to actively adjust the expansion degree of the plugging sleeve 10 to adapt to water channels of different shapes. It should be noted that the adjusting structure 20 can be any device that can expand or contract the diameter of the plugging sleeve 10 and can be matched and arranged in the plugging sleeve 10. For example, in the requirement of multiple circulation use, the plugging sleeve 10 is a double-layer structure, the inner layer of which is a silicone sealing bag and the outer layer is wrapped with a high-strength aramid braided mesh. Matching it, the adjusting structure 20 includes a silicone sealing bag connected to the outer layer. The annular pressure chamber is connected, and the silicone sealing bag is expanded by inflating and increasing the pressure inside the silicone sealing bag, so that the plugging sleeve 10 can adapt to water gushing channels of different shapes. For example, under the requirement of disposable use, the plugging sleeve 10 can be a nylon rubber composite material coated with chemical glue on the surface. Matching it, the adjustment structure 20 includes a mechanical strut, which is used to expand the plugging sleeve 10 and make the plugging sleeve 10 tightly contact the surface of the water gushing channel, and firmly bonded to the rock wall through chemical glue. The mechanical strut can then be removed, and the plugging sleeve 10 is permanently left at the plugging operation site as a waste. A slurry pipe 21 is provided in the adjustment mechanism, which passes through the plugging sleeve 10. After the plugging sleeve 10 completes the plugging of the water gushing channel, the slurry pipe 21 continues to inject slurry into the water gushing channel, so that a dense filling body is formed in the water gushing channel after the slurry solidifies, further achieving structural plugging of the water gushing channel.

[0034] The present invention provides a device for plugging water inrush in a mine, comprising a plugging sleeve 10. The plugging sleeve 10 can change shape according to the stress state, thereby adapting to different shapes of mine water inrush rock channels and achieving efficient plugging thereof. At the same time, an adjustment structure 20 is also provided inside the plugging sleeve 10, so that the operator can actively adjust the specific expansion degree of the plugging sleeve 10 through the adjustment structure 20. By changing the material and thickness of the plugging sleeve 10, combined with the active adjustment effect of the adjustment structure 20, the plugging sleeve 10 can be actively filled into the cracks of the mine water inrush channel and as much as possible. It fits the uneven rock wall, thereby greatly improving the sealing effect of the plugging sleeve 10 on the water gushing; the regulating mechanism also includes a slurry pipe 21 for conveying slurry. After the plugging sleeve 10 performs emergency sealing on the water gushing channel, the slurry pipe 21 placed in the regulating mechanism and penetrating the plugging sleeve 10 delivers slurry into the water gushing channel, and the coagulation property of the chemical slurry is used to seal the water gushing channel. During the solidification period of the slurry, the plugging sleeve 10 plays a role in tightly sealing the edge of the water gushing channel to prevent the outflow of the chemical slurry, which may cause gaps in the filling body formed by the slurry and cause secondary small water gushing.

[0035] In some embodiments, reference Figure 1 The adjusting structure 20 is connected to the slurry pipe 21 through the connecting structure 30. Exemplarily, the connecting structure 30 includes a bevel gear transmission connecting structure 30. When the operator rotates the slurry pipe 21, the active bevel gear 31 rotates synchronously, thereby driving the driven bevel gear 32 in the adjusting structure 20 to rotate; Exemplarily, the connecting structure 30 includes a worm gear structure. When the operator manipulates the slurry pipe 21, the slurry pipe 21 affects the worm in the adjusting structure 20, and operates the adjusting structure 20 through its own rotation. The setting of the connecting structure 30 enables the grouting pipe 21 to directly affect the adjustment structure 20, thereby realizing the dynamic integration of grouting operation and plugging adjustment operation. For example, karst fissures will expand due to changes in head pressure during the plugging process, and this expansion trend also exists during the grouting process. If the part operating the adjustment structure 20 is designed separately from the grouting pipe 21 operating the grouting, then the grouting work of the karst fissures will require two people to complete. Therefore, the grouting pipe 21 integrating the grouting function and the adjustment function realizes the improvement of the plugging efficiency. At the same time, integrating the two functions on the same component can also avoid the coordination error caused by different operators operating the two components, thereby improving the work accuracy.

[0036] In some embodiments, reference Figure 1 and Figure 2The adjusting structure 20 specifically includes: a screw rod 22 and a movable column 23. The inner wall of the movable column 23 is provided with an internal thread, which engages with the external thread of the screw rod 22 and can slide along the axial direction of the screw rod 22. When the screw rod 22 rotates, the rotational motion of the screw rod 22 can be converted into a linear sliding of the movable column 23 along the axial direction of the screw rod 22 through the thread pair, thereby realizing the movement of the movable column 23 perpendicular to the slurry pipe 21 by converting the rotation of the slurry pipe 21, and further realizing the function of the movable column 23 to support the plugging sleeve 10 and expand it. Among them, the necessity of converting the rotation of the slurry delivery pipe 21 into a movement perpendicular to its arrangement direction is: if the slurry delivery pipe 21 operates the rise or fall of the movable column 23 by its own movement along the slurry delivery direction, then the prerequisite for it to achieve this function is that there is enough space in the water gushing channel for it to move, and the water gushing channel is usually narrow and non-straight, so the movement of the slurry delivery pipe 21 therein is often restricted; in addition, in order to ensure the blocking function, the interface between the slurry delivery pipe 21 and the plugging sleeve 10 is often specially waterproofed. Such waterproof measures are usually weak in resisting axial forces but strong in resisting radial forces. For example If the slurry pipe 21 moves back and forth along its own axis to drive the movable column 23, its interface will repeatedly and alternately bear axial tension and pressure, which may easily cause permanent deformation and wear of the waterproof sealing ring under repeated axial extrusion, thereby reducing its sealing performance; under the same conditions, the rotational motion only generates torque and radial force on the interface without significant axial displacement, and only friction loss on the sealing ring, which is not easy to cause fatigue. Relatively speaking, the possibility of damage to the sealing ring is smaller. In addition, the rotation operation only requires a small range of movement in the space around the pipe. Compared with the form in which the slurry pipe 21 needs to move back and forth along its own axis to drive the movable column 23, the space requirement for the water channel is lower and the adaptability is stronger.

[0037] The connection structure 30 between the slurry delivery pipe 21 and the adjustment structure 20 specifically includes a driving bevel gear 31 and a driven bevel gear 32. The driving bevel gear 31 is arranged on the outer surface protruding from the slurry delivery pipe 21, and the driven bevel gear 32 protrudes from the outer surface of the screw rod 22 and meshes with the driving bevel gear 31. When the slurry delivery pipe 21 rotates, the driving bevel gear 31 protruding from the surface of the slurry delivery pipe 21 rotates at the same time, thereby driving the rotation of the driven bevel gear 32 meshed with it. The necessity of this is: on the one hand, the bevel gear transmits the rotational motion by converting the direction of 90 degrees, without the slurry delivery pipe 21 itself moving along the axis, and in non-straight places such as water channels In the confined space, its setting realizes that the slurry delivery pipe 21 relies on its own rotation around the axis to drive the movable column 23 to actively expand the blocking sleeve 10, so that the driving method of the movable column 23 has the ability to circumvent space limitations; on the other hand, the combination of the double bevel gear and the screw rod 22 thread pair has a self-locking characteristic, because the bevel gear converts the input torque into the axial thrust of the screw rod 22 thread pair, and the reverse load must first overcome the tooth surface friction of the bevel gear before it can drive the thread pair to reverse. In the process of reversing the screw rod 22, the slurry delivery pipe 21 needs to be driven to reverse. Therefore, this structure has a certain degree of self-resistance to negative direction loads.

[0038] It should be noted that the exemplary structures of the above-mentioned adjustment structure 20 and the connection structure 30 can be used in combination with each other, or can be used in combination with other structures. For example, in some embodiments, the adjustment structure 20 adopts a screw and a movable column 23, and the connection structure 30 adopts a worm and a worm gear structure. Specifically, the axis of the worm and the axis of the worm gear are spatially staggered by 90 degrees, and the continuous spiral tooth grooves of the worm protrude from the surface of the slurry pipe 21 at intervals. The worm gear is coaxially fixedly connected to the screw and meshes with the continuous spiral tooth grooves on the surface of the slurry pipe 21. When the slurry pipe 21 rotates from its axis, the continuous spiral tooth grooves on its surface also rotate with the screw. As it rotates, the worm gear meshed therein also rotates, and then the lead screw 22 rotates, and the meshing action of the threaded pair and the movable column 23 causes the movable column 23 to rise or fall; illustratively, in some embodiments, the adjustment structure 20 adopts a gear-rack form, and the connecting structure 30 adopts a double-bevel gear form, wherein the active bevel gear 31 protrudes from the surface of the slurry delivery pipe 21, and the driven bevel gear 32 meshes with it, and a rack meshed at the other end is meshed with the rack, and the movable column 23 is fixedly connected to the rack, so that when the driven bevel gear 32 rotates, it drives the rack meshed with it to move perpendicular to the slurry delivery direction.

[0039] In some embodiments, reference Figure 1 and Figure 2At least two screw rods 22 are provided, and correspondingly, at least two movable columns 23 are also provided. It should be noted that the end of the movable column 23 can be separated from the plug sleeve 10 or connected thereto. Exemplarily, the end of the movable column 23 abuts against the inner surface of the plug sleeve 10; exemplary, the end of the movable column 23 is hinged to the inner surface of the plug sleeve 10; exemplary, the end of the movable column 23 is fixed to the inner surface of the plug sleeve 10. The axial displacement of the movable column 23 directly drives the plugging sleeve 10 to expand or contract radially, and multiple screw rods 22 are symmetrically distributed around the slurry pipe 21 as the central axis. It should be noted that the arrangement of the screw rods 22 can be different according to the length of the plugging sleeve 10 and other conditions. For example, the screw rods 22 are arranged in the same circumferential surface of the outer surface of the slurry pipe 21, and the driven bevel gears 32 of all screw rods 22 are engaged with the same active bevel gear 31 on the slurry pipe 21; for example, all screw rods 22 on the same circumferential surface are grouped as a group, and the slurry pipe 21 is provided with multiple active bevel gears 31 at intervals along the length direction. Correspondingly, multiple groups of screw rods 22 are provided, and the driven bevel gears 32 of the same group of screw rods 22 are engaged with the same active bevel gear 31 on the slurry pipe 21. The same active bevel gear 31 at the corresponding position is meshed to form a one-drive-many transmission form; during operation, the rotating slurry delivery pipe 21 synchronously drives all the driven bevel gears 32 through the active bevel gear 31, so that each screw rod 22 rotates at the same speed and direction, forcing all the movable columns 23 to slide synchronously along the axial direction, and evenly expand the inner wall of the plugging sleeve 10 through the hinge point to achieve proportional expansion of the diameter of the plugging sleeve 10, thereby avoiding the tediousness of traditional multi-adjustment mechanisms that need to be operated one by one, and shortening the operation time; at the same time, by increasing the number of screw rods 22 groups along the length direction of the infusion pipe, it can adapt to plugging sleeves 10 of various lengths, so that the entire device has a flexibly adjustable plugging length, and further, it can support temporary plugging work in long-distance water gushing channels.

[0040] In some embodiments, reference Figure 3, a locking mechanism 40 is provided on the slurry delivery pipe 21, and the locking mechanism 40 can lock the slurry delivery pipe 21 and limit its rotation. It should be noted that the locking mechanism 40 includes all structures that can limit the rotation of the slurry delivery pipe 21. For example, the locking structure includes a rod-slot elastic locking mechanism. Specifically, a plurality of elastic rods are evenly fixed to the appearance or the inner wall of the device theme, and the end is inclined. At the same time, an annular groove and an axial unlocking groove are processed on the surface of the slurry delivery pipe 21. In the locked state, the rod bounces into the slot and limits the rotation by interference from the side wall; For example, the locking structure includes a bolt tightening The locking structure is specifically, the locking area of the outer wall of the slurry pipe 21 is circumferentially processed with anti-skid patterns. For example, the anti-skid patterns can be knurled grooves or groove arrays. The radial direction of the device shell corresponding to the locking area is penetrated by a locking bolt. In the locked state, the bolt is tightened against the surface of the slurry pipe 21, and the rotation of the slurry pipe 21 is limited by friction, so that the reverse self-locking of the slurry pipe 21 is achieved under the impact of water gushing or the reverse torque of vibration, thereby enhancing the resistance of the entire device to external interference, and further enhancing the safety of using this device for emergency grouting of water gushing and improving the work quality.

[0041] In some embodiments, reference Figure 3 The locking mechanism 40 includes a pawl 41 and a ratchet 42. The ratchet 42 is arranged in a ring and protrudes from the surface of the exposed section of the slurry delivery pipe 21 and is unidirectionally limited by the pawl 41. Specifically, the teeth of the ratchet 42 are evenly distributed along the circumference and the side walls of the tooth groove are designed at right angles. A hinge seat is rigidly fixed on the main body of the device. The pawl 41 is connected to the hinge seat through a pin shaft. The claw tip of the pawl 41 is pressed toward the tooth groove of the ratchet 42 by a torsion spring. When the slurry delivery pipe 21 rotates forward (corresponding to the expansion direction of the plugging sleeve 10), The inclined surface of the tooth surface of the ratchet 42 pushes away the tip of the ratchet 41, and the ratchet 41 swings around the hinge point without hindering the rotation; when the impact or vibration of the gushing water causes reverse torque, the tip of the ratchet 41 is instantly stuck in the tooth groove of the ratchet 42 under the action of the torsion spring, and the ratchet 42 is locked by the rigid contact between the side wall of the tooth groove and the tip of the claw, thereby limiting the reverse rotation of the slurry delivery pipe 21, avoiding the accidental contraction of the plugging sleeve 10 in the working state caused by the retreat of the adjustment structure 20, and further improving the engineering reliability of the device.

[0042] In some embodiments, reference Figure 3, the end of the plugging sleeve 10 is connected to an active backflow prevention mechanism 50 to actively prevent grouting backflow. Specifically, the grouting end of the plugging sleeve 10 (i.e., the end away from the water gushing plugging working area) is coaxially connected to the active backflow prevention mechanism 50, and its internal channel is connected to the inlet of the slurry pipe 21; exemplarily, the active backflow prevention mechanism 50 is a mechanical linkage active sealing structure, including a valve plate assembly, an operating interface and a pressure adapter module, wherein the valve plate assembly matches the inlet bevel of the slurry pipe 21, the central axis of the valve plate is connected to a bidirectional threaded screw, and the bidirectional threaded screw extends to the outside of the device through the operating interface, and the operator actively affects the backflow prevention mechanism through the operating handle; exemplarily, the active backflow prevention mechanism 50 includes a hydraulically driven rotary valve plate mechanism, specifically, it includes a valve body assembly and a hydraulic actuator, the hydraulic actuator increases the pressure of the valve body assembly to apply liquid pressure to the valve plate in the valve body to seal it, thereby realizing the function of active interference backflow prevention. When the grouting pressure is normal, the slurry can flow into the water gushing area through the mechanism in one direction; when the grouting stops or the pressure drops suddenly, the operator actively blocks the reverse flow of the slurry through the mechanism to prevent the backflow of water and the failure of the sealing of the plugging sleeve 10.

[0043] In some embodiments, reference Figure 3 and Figure 4The active backflow prevention mechanism 50 includes: a cylinder 51, a worm group 52 and a hollow plate 53. The cylinder 51 is connected to the slurry pipe 21. The internal channel of the cylinder 51 is connected to the outlet of the slurry pipe 21, that is, the slurry in the slurry pipe 21 is injected into the water gushing channel through the channel inside the cylinder 51. The inner wall of the cylinder 51 is coaxially nested with a hollow plate 53. The hollow plate 53 is blocked in the cylinder 51 and divides the cylinder 51 into two independent spaces. Exemplarily, the two independent spaces include a first independent space and a second independent space. At least one connecting hole is provided on the hollow plate 53, and the two independent spaces of the cylinder 51 are connected through the connecting hole; thereby, when the connecting hole is not blocked, the slurry can pass through it normally; a movable plate 54 is concentrically wrapped inside the hollow plate 53, and the shape of the movable plate 54 is the same as that of the connecting hole and can be switched between a first position and a second position. In the first position, the movable plate 54 is blocked at the connecting hole of the hollow plate 53; in the second position, the hollow plate 53 and the connecting hole do not overlap in the direction of slurry flow. Specifically, the movable plate 54 is driven to rotate by the worm group 52, and the input shaft of the worm group 52 extends to the outside of the cylinder 51 and is connected to the operating handle; when the worm group 52 is not in motion, the movable plate 54 is in the first position, at which time the movable plate 54 completely covers and blocks the connecting hole of the hollow plate 53; when the operator rotates the input shaft of the worm group 52, the worm engages and drives the movable plate 54 to rotate to the second position, at which time the movable plate 54 and the connecting hole are completely misaligned in the slurry flow direction, and the connecting hole is fully open; when the slurry flows forward (from the plugging sleeve 10 to the outlet of the cylinder 51), the operator can actively control the movable plate 54 to switch to the second position to allow the slurry to pass smoothly; when grouting stops, the operator can actively switch the movable plate 54 to the first position, and mechanically block the gushing water from flowing back into the slurry pipe 21. The necessity of this design is that mine water gushing is often accompanied by dynamic pressure fluctuations, and the pressure may increase suddenly due to geological activities, rainy season replenishment, etc. One-way valves rely on fluid pressure difference for passive opening and closing. In case of sudden pressure changes, the valve disc may become stuck (due to response delay), resulting in seal failure, causing slurry backwash and dilution, or even collapse of the sealing structure. In addition, mine water often contains mud, sand, rock debris and other substances. The one-way valve may be easily blocked by particles, resulting in a loose seal. The active interference mechanism seals through rigid dislocation, has strong resistance to blockage by impurity water, and can ensure the sealing effect.

[0044] In some embodiments, reference Figure 1 and Figure 5The device also includes a plug 60 and a quick-connect structure 70. The plug 60 is coaxially fixedly connected to the end of the plug sleeve 10 away from the water-blocking working area. The plug 60 is a solid disc structure. The outer diameter of the plug 60 is not less than the maximum outer diameter of the plug sleeve 10 after expansion. The plug 60 and the plug sleeve 10 are sealed by a flange. The quick-connect structure 70 is coaxially fixed to the end of the plug 60 facing away from the plug sleeve 10. For example, the quick-connect structure 70 includes a disc-shaped shelf 71 and at least three screws 72 evenly distributed along the circumference. The ends of the screws 72 extend outside the shelf 71 and are machined with self-tapping threads. When the operator aligns the plug 60 with a preset drill hole in the mine rock mass, the screw 72 is rotated so that the self-tapping threads are embedded in the rock mass. The axial feed force of the screw 72 presses the shelf 71 against the rock mass surface, thereby achieving a rapid and rigid fixed connection between the plug 60 and the rock mass at the end of the plug sleeve 10 away from the water-blocking working area.

[0045] In some embodiments, reference Figure 1 and Figure 5 The quick connection structure 70 includes a shelf 71 and a screw 72. The screw 72 is arranged perpendicular to the plane of the shelf 71. Each screw 72 penetrates the through hole on the shelf 71 and the threaded hole at the end of the plug 60 in turn, and the shelf 71 is fastened to the plug 60 by a nut. The end of the screw 72 extends to the outside of the shelf 71 and is processed with a self-tapping thread. The quick connection structure 70 also includes a synchronous wheel 73 and a synchronous belt 74. Each synchronous wheel 73 is coaxially sleeved on a section of a screw 72 near the plug 60. The inner wall of the synchronous wheel 73 is provided with an internal thread and meshes with the external thread of the screw 72. The outer edge of the synchronous wheel 73 is provided with a tooth groove and is engaged with the plug The end face of the head 60 is connected for rotation via a bearing; adjacent synchronous wheels 73 are meshed and driven by an annular synchronous belt 74, and the inner teeth of the synchronous belt 74 are completely matched with the tooth grooves on the outer edge of the synchronous wheel 73; when the operator rotates any screw 72, the screw 72 drives the synchronous wheel 73 on it to rotate, and the synchronous wheel 73 drives the other synchronous wheels 73 to rotate synchronously through the synchronous belt 74, so that all the screws 72 are screwed into the preset drill hole in the mine rock at the same speed and direction, and the self-tapping thread at the end of the screw 72 is embedded in the rock to generate axial feed force, so that the shelf 71 is evenly pressed against the rock surface, thereby realizing rapid and rigid anchoring of the plug 60 to the rock.

[0046] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with this technical field within the technical scope disclosed by the present invention and within the spirit and principles of the present invention should be covered by the scope of protection of the present invention.

[0047] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are merely examples, and any embodiments having substantially the same structure and effect as the technical concept within the scope of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the present application, any other embodiments that can be conceived by those skilled in the art and that combine some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A mine water inrush blocking device, characterized in that: include: The plugging sleeve (10) can change shape according to the stress state; an adjusting structure (20) disposed within the plugging sleeve (10) and capable of adjusting the diameter of the plugging sleeve (10); The regulating structure (20) further includes a slurry delivery pipe (21) passing through the blocking sleeve (10) for delivering slurry.

2. A mine water inrush blocking device according to claim 1, characterized in that: The regulating structure (20) is connected to the slurry delivery pipe (21) via a connecting structure (30), and the slurry delivery pipe (21) can operate the regulating structure (20) by rotating itself.

3. A mine water inrush blocking device according to claim 2, characterized in that: The regulating structure (20) comprises: Screw (22); A movable column (23), wherein an inner wall of the movable column (23) is provided with an internal thread that engages with the external thread of the screw rod (22) and is capable of sliding along the axial direction of the screw rod (22), and the axial direction of the screw rod (22) is consistent with the expansion or contraction direction of the plugging sleeve (10); and / or; The connecting structure (30) comprises: A driving bevel gear (31) is provided on an outer surface protruding from the slurry delivery pipe (21); The driven bevel gear (32) protrudes from the outer surface of the screw rod (22) and meshes with the driving bevel gear (31).

4. A mine water inrush blocking device according to claim 3, characterized in that: At least two screw rods (22) are provided, and correspondingly, at least two movable columns (23) are also provided.

5. The mine water inrush blocking device according to claim 2, characterized in that: The slurry delivery pipe (21) is provided with a locking mechanism (40), and the locking mechanism (40) can lock the slurry delivery pipe (21) and restrict its rotation.

6. The mine water inrush blocking device according to claim 5, characterized in that: The locking mechanism (40) comprises: ratchet (41); The ratchet (42) protrudes and is arranged around the surface of the exposed section of the slurry delivery pipe (21), and the ratchet (42) is unidirectionally limited by the pawl (41).

7. The mine water inrush blocking device according to claim 1, characterized in that: An active backflow prevention mechanism (50) is connected to the end of the blocking sleeve (10) to actively prevent grouting backflow.

8. The mine water inrush blocking device according to claim 7, characterized in that: The active backflow prevention mechanism (50) comprises: Cylinder (51); worm gear set (52); A hollow plate (53) is blocked in the cylinder (51) and divides the cylinder (51) into two independent spaces. The hollow plate (53) is provided with at least one communication hole, and the two independent spaces of the cylinder (51) are connected through the communication hole. A movable plate (54) is concentrically wrapped inside the hollow plate (53), and the shape of the movable plate (54) is the same as that of the communicating hole and can be switched between a first position and a second position. In the first position, the movable plate (54) is blocked at the communicating hole of the hollow plate (53); in the second position, the hollow plate (53) and the communicating hole do not overlap in the direction of slurry flow.

9. The mine water inrush blocking device according to claim 1, characterized in that: Also includes: A plug (60) is connected to one end of the plug sleeve (10) away from the water-blocking working area, and the outer diameter of the plug (60) is not less than the maximum outer diameter of the plug sleeve (10) after expansion; A quick connection structure (70) is connected to the plug (60) and is used to quickly fix the plug (60) on the mine rock mass.

10. The mine water inrush blocking device according to claim 9, characterized in that: The quick connection structure (70) includes: Shelves (71); a screw rod (72), the screw rod (72) penetrating the shelf (71) and the plug (60) and connecting the shelf (71) and the plug (60), and at least three screw rods (72) are provided, and the screw rods (72) are provided with self-tapping threads; The synchronous wheel (73) is sleeved on each of the screw rods (72) and is threadedly engaged with the screw rods (72). The synchronous wheel (73) is rotationally connected to the plug (60), and two adjacent synchronous wheels (73) are driven by a synchronous belt (74).

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