A deep well tunnel anti-impact ground pressure support device

Abstract

The present invention discloses a deep well tunnel anti-impact ground pressure support device, which relates to the field of deep well tunnel support technology, and includes an anti-deformation mechanism, which is arranged on the inner side of the deep well tunnel and is in direct contact with the inner wall of the deep well tunnel, and is used to support the interior of the deep well tunnel; and includes a support assembly, the surface of the support assembly is fixedly connected to an arc plate, the surface of the arc plate is fixedly connected to a straight plate, and the arc plate and the straight plate are embedded in the inner side of the deep well tunnel. In the deep well tunnel anti-impact ground pressure support device, in the actual situation of tunnel excavation, there is a gap between the support assembly and the arc plate and the straight plate, and the reinforcement assembly injects concrete into the position below the base, so that the base is firmly connected to the bottom of the tunnel, the support assembly supports the tunnel once, and the support pipe supports the tunnel twice, which solves the problem that the tunnel surrounding rock shows large deformation and is very easy to damage the concrete spraying layer in the anchor spraying support.

Description

Technical Field

[0001] The present invention relates to the technical field of deep well tunnel support, in particular to a deep well tunnel anti-impact ground pressure support device. Background Art

[0002] Anchor shotcrete support technology is widely used in coal mine tunnels. Shotcrete and anchor surrounding rock work together to form a support system with sufficient resistance. The role of the shotcrete layer is that it can timely seal the surrounding rock to prevent weathering and deliquescence, support and fill and reinforce the surrounding rock, and distribute external forces. Anchor shotcrete support is a safe, reliable, economically feasible and adaptable technology to solve tunnel support. It is the main support form in current support projects. However, this support technology has problems such as large shotcrete transportation construction volume, large rebound volume, high dust concentration and strong alkalinity, high brittleness of the shotcrete layer, large strength attenuation of the shotcrete layer in the later stage, and poor gas and liquid sealing ability. With the continuous consumption of resources, the mining depth of mines is increasing. The increase in mining depth leads to an increase in concentrated stress and deviatoric stress in the tunnel surrounding rock, causing significant changes in the deformation characteristics of the surrounding rock. When the mine enters the super-kilometer mining stage, the tunnel surrounding rock shows large deformation, which can easily destroy the concrete spraying layer in the anchor spraying support. This makes the above-mentioned technical problems inherent in shotcrete more prominent, especially the two major problems of large strength attenuation in the later stage and high brittleness of the spraying layer. They become key issues affecting deep well support and deep well safety production.

[0003] Due to structural design defects, the existing deep well tunnel anti-impact ground pressure support device has the problem that the tunnel surrounding rock shows large deformation, which is very easy to damage the concrete sprayed layer in the anchor spraying support, and the density is too low during anchor grouting, resulting in support flexibility and strength defects. Summary of the Invention

[0004] The present invention provides a deep well tunnel anti-impact ground pressure support device, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a deep well tunnel anti-impact ground pressure support device, comprising

[0006] A base, wherein a bottom portion of the base near an edge is fixedly connected to an extension, and a surface of the base is fixedly connected to a threaded rod;

[0007] The anti-deformation mechanism is arranged on the inner side of the deep well tunnel and is in direct contact with the inner wall of the deep well tunnel, and is used to support the interior of the deep well tunnel; it includes a support assembly, a curved plate is fixedly connected to the surface of the support assembly, a straight plate is fixedly connected to the surface of the curved plate, the curved plate and the straight plate are embedded in the inner side of the deep well tunnel, the top of the base is fixedly connected to a reinforcement assembly, the top of the reinforcement assembly is fixedly connected to a support pipe, and the support pipe supports the support assembly;

[0008] The anti-loosening mechanism is used to pour concrete mortar into the interior of the support assembly. The mortar overflows through the support assembly to fill the gap between the curved plate and the straight plate. At the same time, the mortar fills and supports the gap in the deep well tunnel. During installation, pressure is applied to the curved plate and the straight plate so that part of the surface of the plate is embedded in the surrounding rock of the soft soil tunnel. The support assembly is a precast concrete structure, and the surface of the support assembly is in direct contact with the curved plate and the straight plate.

[0009] Preferably, the bottom of the support assembly is fixedly connected to the top of the base, and concrete is introduced into the lower position of the base by the reinforcement assembly. After the concrete solidifies, the base is fixedly connected to the tunnel ground through a threaded rod.

[0010] Preferably, the support assembly includes a concrete body, the bottom of the concrete body is fixedly connected to the top of the base, and grouting holes are opened inside the concrete body, and the grouting holes extend to the outside of the concrete body.

[0011] Preferably, the surface of the concrete body is provided with an opening, which connects the grouting hole with the outside of the concrete body. The surface of the concrete body is provided with an embedding groove. When the concrete body is precast, an embedding groove is left on the surface of the mold. The surfaces of the curved plate and the straight plate are against the embedding groove. The deformation of the roadway causes the curved plate and the straight plate to deform. The concrete body provides pressure support for the plate, thereby effectively preventing the curved plate and the straight plate from being crushed.

[0012] Preferably, the reinforcement assembly includes a fixing plate, the bottom of the fixing plate is fixedly connected to the top of the base, an extension tube is fixedly connected to the surface of the fixing plate, the bottom end of the extension tube extends to a position below the base, and a sealing ring is arranged between the limit plate and the anchor rod. The limit plate is fixed by a mechanism body. During grouting, the anchor rod is driven to rotate by external force, and the sealing ring can effectively prevent the mortar from overflowing through the limit plate.

[0013] Preferably, the top end of the extension tube is fixedly connected to a connecting tube, one end of the connecting tube extends to the outside of the concrete body, and the top end of the threaded rod is fixedly connected to the bottom of the inner side surface of the support tube.

[0014] Preferably, the anti-loosening mechanism comprises a mechanism body, a surface of the mechanism body is fixedly connected to a surface of the support assembly, and a sealing assembly is fixedly connected to a side of the mechanism body away from the support assembly.

[0015] Preferably, the surface of the sealing assembly is fixedly connected to an anchor rod, the surface of the anchor rod is fixedly connected to a spiral sheet, the side of the mechanism body close to the sealing assembly is fixedly connected to a fixed body, and the surface of the fixed body is fixedly connected to a limiting assembly.

[0016] Preferably, the sealing assembly includes a limit plate, the surface of the limit plate is fixedly connected to the surface of the mechanism body, and a sealing ring is fixedly connected to the middle position of the inner side of the limit plate. The sealing assembly passes concrete mortar into the interior of the support assembly. During the process of adding mortar, the anchor rod is in a rotating state, and the mortar enters the support assembly through the hole on the surface of the anchor rod. Then the concrete mortar flows through the support assembly to the gap inside the soft rock tunnel.

[0017] Preferably, the inner side surface of the sealing ring is rotatably connected to the surface of the anchor rod, a hole is opened on the surface of the anchor rod away from the sealing ring, and a tooth surface ring is fixedly connected to one end of the anchor rod surface close to the sealing ring. The tooth surface ring is externally connected to a grouting device, and the grouting device pours mortar into the anchor rod. The tooth surface makes the structural connection between the grouting device and the anchor rod tighter, and the mortar is poured into the supporting assembly, thereby squeezing concrete into the gap position of the soft rock in the tunnel for filling and reinforcement.

[0018] Preferably, the limiting assembly includes a limiting rod, one end of which is fixedly connected to the surface of the fixed body, and the inner side surface of the supporting assembly is fixedly connected to a limiting bent plate.

[0019] Preferably, a sleeve is fixedly connected to the surface of the limiting bent plate, a connecting sleeve is fixedly connected to the surface of the sleeve, and the surface of the limiting rod passes through the inner side surface of the connecting sleeve and is slidably connected to the connecting sleeve.

[0020] The present invention provides a deep mine tunnel anti-impact ground pressure support device, which has the following beneficial effects:

[0021] 1. In the actual situation of tunnel excavation, there is a gap between the support component and the curved plate and the straight plate of the deep well tunnel support device. The reinforcement component injects concrete into the lower position of the base to ensure a firm connection between the base and the bottom of the tunnel. The support component provides primary support for the tunnel, and the support pipe provides secondary support for the tunnel, which solves the problem that the tunnel surrounding rock shows large deformation and is very easy to damage the concrete sprayed layer in the anchor spraying support.

[0022] 2. The deep well tunnel anti-impact ground pressure support device has concrete mortar introduced into the connecting pipe, and the mortar is poured into the tunnel ground through the extension pipe. After the mortar solidifies, the base is tightly connected to the ground. The bottom end of the threaded rod extends to a position below the ground. The screw on the surface of the threaded rod supports the tunnel. Concrete is poured through multiple extension pipes, which can effectively allow the mortar to be fully poured into the gaps in the soft rock of the tunnel.

[0023] 3. This deep well tunnel anti-impact ground pressure support device uses the thread lift of the spiral piece to squeeze the mortar into the soft rock tunnel, thereby increasing the density of the concrete. The limit assembly supports the support pipe, and the fixed body uses the limit assembly to increase the deformation resistance of the support pipe, solving the problem of support flexibility and strength defects caused by low density during anchor grouting.

[0024] 4. In the deep well tunnel anti-impact ground pressure support device, the bottom end of the support pipe is fixed by a reinforcement component, one end of the limit rod is fixed by a fixing body, and the limit bend plate fixes each support pipe separately. The surface of the support pipe passes through the inner side of the sleeve. At the same time, the limit rod connects and supports multiple support pipes, thereby effectively avoiding the problem of a single support pipe being broken due to excessive pressure.

[0025] 5. In the deep well tunnel anti-impact ground pressure support device, one end of the anchor rod extends to the inside of the grouting hole. The mortar flows through the opening to the gap position of the tunnel. The spiral blade is driven to rotate so that the mortar is pushed into the gap position of the tunnel. The concrete body can prevent the soil in the soft rock of the tunnel from clogging the anchor rod when the spiral blade rotates, making it difficult to slurry out of the hole on the surface of the anchor rod, thereby avoiding the problem of low concrete density due to clogging of the slurry outlet hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the anti-impact ground pressure support device for deep well tunnels of the present invention from a top view;

[0027] Figure 2 This is a schematic diagram of the overall structure of the anti-impact ground pressure support device for deep well tunnels of the present invention from a top view;

[0028] Figure 3 Schematic diagram of the structure of the anti-deformation mechanism of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the support assembly of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the reinforcement assembly of the present invention;

[0031] Figure 6 Schematic diagram of the structure of the anti-loosening mechanism of the present invention;

[0032] Figure 7 Schematic diagram of the structure of the sealing assembly of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the limiting component of the present invention.

[0034] In the figure: 1. base; 2. extension; 3. threaded rod; 4. anti-deformation mechanism; 41. support assembly; 411. concrete body; 412. grouting hole; 413. opening; 414. embedding groove; 42. arc plate; 43. straight plate; 44. reinforcement assembly; 441. fixing plate; 442. extension pipe; 443. connecting pipe; 45. support pipe; 5. anti-loosening mechanism; 51. mechanism body; 52. sealing assembly; 521. limiting plate; 522. sealing ring; 523. tooth surface ring; 53. anchor rod; 54. spiral sheet; 55. fixed body; 56. limiting assembly; 561. limiting rod; 562. limiting bent plate; 563. sleeve; 564. connecting sleeve. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] like Figure 1-Figure 3 As shown, the present invention provides a technical solution: a deep well tunnel anti-impact ground pressure support device, comprising

[0037] Base 1, the bottom of the base 1 near the edge is fixedly connected to the extension 2, the surface of the base 1 is fixedly connected to the threaded rod 3;

[0038] The anti-deformation mechanism 4 is arranged on the inner side of the deep well tunnel and is in direct contact with the inner wall of the deep well tunnel, and is used to support the interior of the deep well tunnel; it includes a support assembly 41, a curved plate 42 is fixedly connected to the surface of the support assembly 41, a straight plate 43 is fixedly connected to the surface of the curved plate 42, and the curved plate 42 and the straight plate 43 are embedded in the inner side of the deep well tunnel. The top of the base 1 is fixedly connected to a reinforcement assembly 44, and the top of the reinforcement assembly 44 is fixedly connected to a support tube 45, which supports the support assembly 41;

[0039] The anti-loosening mechanism 5 is used to pour concrete mortar into the interior of the support assembly 41. The mortar overflows through the support assembly 41 to fill the gap between the curved plate 42 and the straight plate 43. At the same time, the mortar fills and supports the gap in the deep well tunnel;

[0040] The bottom of the support assembly 41 is fixedly connected to the top of the base 1 , and the reinforcement assembly 44 injects concrete into the lower position of the base 1 . After the concrete solidifies, the base 1 is fixedly connected to the tunnel ground through the threaded rod 3 .

[0041] During use and installation, pressure is applied to the curved plate 42 and the straight plate 43 so that part of the surface of the plate is embedded in the surrounding rock of the soft soil tunnel. The support component 41 is a precast concrete structure. The surface of the support component 41 is in direct contact with the curved plate 42 and the straight plate 43. In the actual situation of tunnel excavation, there is a gap between the support component 41 and the curved plate 42 and the straight plate 43. The reinforcement component 44 injects concrete into the lower position of the base 1 so that the base 1 is firmly connected to the bottom of the tunnel. The support component 41 supports the tunnel once, and the support pipe 45 supports the tunnel twice, which solves the problem that the surrounding rock of the tunnel shows large deformation and is very easy to damage the concrete sprayed layer in the anchor spraying support.

[0042] like Figure 3 、 Figure 4 、 Figure 5 As shown, the support assembly 41 includes a concrete body 411, the bottom of the concrete body 411 is fixedly connected to the top of the base 1, a grouting hole 412 is opened inside the concrete body 411, the grouting hole 412 extends to the outside of the concrete body 411, and an opening 413 is opened on the surface of the concrete body 411, the opening 413 connects the grouting hole 412 with the outside of the concrete body 411, and an embedding groove 414 is opened on the surface of the concrete body 411. The reinforcement assembly 44 includes a fixing plate 441, the bottom of the fixing plate 441 is fixedly connected to the top of the base 1, and the surface of the fixing plate 441 is fixedly connected to an extension pipe 442, the bottom end of the extension pipe 442 extends to the lower position of the base 1, the top of the extension pipe 442 is fixedly connected to a connecting pipe 443, one end of the connecting pipe 443 extends to the outside of the concrete body 411, and the top of the threaded rod 3 is fixedly connected to the bottom of the inner side surface of the support pipe 45.

[0043] During use, an embedding groove 414 is left on the surface of the mold when prefabricating the concrete body 411. The surfaces of the curved plate 42 and the straight plate 43 are against the embedding groove 414. The deformation of the tunnel causes the curved plate 42 and the straight plate 43 to deform. The concrete body 411 provides pressure support for the plate, thereby effectively preventing the curved plate 42 and the straight plate 43 from being crushed. Concrete mortar is introduced into the connecting pipe 443, and the mortar is poured into the tunnel ground through the extension pipe 442. After the mortar solidifies, the base 1 is tightly connected to the ground. The bottom end of the threaded rod 3 extends to a position below the ground. The screw on the surface of the threaded rod 3 supports the tunnel. Concrete is poured through multiple extension pipes 442, which can effectively allow the mortar to be fully poured into the gaps in the soft rock of the tunnel.

[0044] like Figure 3 、 Figure 6As shown, the surface of the curved plate 42 is fixedly connected to the straight plate 43, and the curved plate 42 and the straight plate 43 are embedded in the inner side of the deep well tunnel. The top of the base 1 is fixedly connected to the reinforcement component 44, and the top of the reinforcement component 44 is fixedly connected to the support tube 45, and the support tube 45 supports the support component 41. The anti-loosening mechanism 5 includes a mechanism body 51, and the surface of the mechanism body 51 is fixedly connected to the surface of the support component 41. The side of the mechanism body 51 away from the support component 41 is fixedly connected to the sealing component 52, and the surface of the sealing component 52 is fixedly connected to the anchor rod 53, and the surface of the anchor rod 53 is fixedly connected to the spiral sheet 54. The side of the mechanism body 51 close to the sealing component 52 is fixedly connected to the fixed body 55, and the surface of the fixed body 55 is fixedly connected to the limiting component 56.

[0045] During use, the sealing component 52 passes concrete mortar into the interior of the support component 41. During the mortar addition process, the anchor rod 53 is in a rotating state, and the mortar enters the support component 41 through the holes on the surface of the anchor rod 53. Then the concrete mortar flows through the support component 41 to the gap inside the soft rock tunnel. The rotating anchor rod 53 uses the thread lift of the spiral piece 54 to squeeze the mortar into the soft rock tunnel, thereby increasing the density of the concrete. The limiting component 56 supports the support tube 45, and the fixed body 55 uses the limiting component 56 to increase the deformation resistance of the support tube 45, thereby solving the problem of support flexibility and strength defects caused by too low density during grouting of the anchor rod 53.

[0046] like Figure 6 、 Figure 7 、 Figure 8 As shown, the sealing assembly 52 includes a limit plate 521, the surface of the limit plate 521 is fixedly connected to the surface of the mechanism body 51, and a sealing ring 522 is fixedly connected to the middle position of the inner side surface of the limit plate 521. The inner side surface of the sealing ring 522 is rotatably connected to the surface of the anchor rod 53. A hole is opened on the surface of the anchor rod 53 away from the sealing ring 522, and a toothed ring 523 is fixedly connected to the end of the surface of the anchor rod 53 close to the sealing ring 522. The limit assembly 56 includes a limit rod 561, one end of the limit rod 561 is fixedly connected to the surface of the fixed body 55, and the inner side surface of the support assembly 41 is fixedly connected to the limit bent plate 562, and the surface of the limit bent plate 562 is fixedly connected to the sleeve 563, and the surface of the sleeve 563 is fixedly connected to the connecting sleeve 564. The surface of the limit rod 561 passes through the inner side surface of the connecting sleeve 564 and is slidably connected to the connecting sleeve 564.

[0047] During use, the tooth surface ring 523 is connected to the grouting equipment, and the grouting equipment injects mortar into the anchor rod 53. The tooth surface makes the structural connection between the grouting equipment and the anchor rod 53 tighter, and the mortar is poured into the support assembly 41, thereby squeezing the concrete into the gap position of the soft rock in the tunnel for filling and reinforcement. The bottom end of the support tube 45 is fixed by the reinforcement assembly 44, and one end of the limit rod 561 is fixed by the fixed body 55. The limit bend 562 fixes each support tube 45 separately. The surface of the support tube 45 passes through the inner side of the sleeve 563. At the same time, the limit rod 561 connects and supports multiple support tubes 45, thereby effectively avoiding the problem of a single support tube 45 being broken due to excessive pressure.

[0048] like Figure 4 、 Figure 7 As shown, the bottom of the concrete body 411 is fixedly connected to the top of the base 1, a grouting hole 412 is opened inside the concrete body 411, and the grouting hole 412 extends to the outside of the concrete body 411, and an opening 413 is opened on the surface of the concrete body 411, and the opening 413 connects the grouting hole 412 with the outside of the concrete body 411, and an embedding groove 414 is opened on the surface of the concrete body 411. The surface of the limit plate 521 is fixedly connected to the surface of the mechanism body 51, and a sealing ring 522 is fixedly connected to the middle position of the inner side of the limit plate 521. The inner side of the sealing ring 522 is rotatably connected to the surface of the anchor rod 53, and a hole is opened on the surface of the anchor rod 53 away from the sealing ring 522. A toothed ring 523 is fixedly connected to the end of the surface of the anchor rod 53 close to the sealing ring 522.

[0049] When in use, the sealing ring 522 is set between the limit plate 521 and the anchor rod 53. The limit plate 521 is fixed by the mechanism body 51. During grouting, the anchor rod 53 is driven to rotate by external force. The sealing ring 522 can effectively prevent the mortar from overflowing through the limit plate 521. One end of the anchor rod 53 extends to the inside of the grouting hole 412. The mortar flows to the gap position of the tunnel through the opening 413. The spiral piece 54 is driven to rotate so that the mortar is pushed into the gap position of the tunnel. The concrete body 411 can prevent the soil in the soft rock of the tunnel from clogging the anchor rod 53 when the spiral piece 54 rotates, making it difficult to slurry out of the holes on the surface of the anchor rod 53, thereby avoiding the problem of low concrete density due to clogging of the slurry outlet holes.

[0050] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

Claims

1. A deep well tunnel anti-impact ground pressure support device, characterized by: include A base (1), wherein a bottom portion of the base (1) near an edge thereof is fixedly connected to an extension (2), and a surface of the base (1) is fixedly connected to a threaded rod (3); The anti-deformation mechanism (4) is arranged on the inner side of the deep well tunnel and is in direct contact with the inner wall of the deep well tunnel, and is used to support the interior of the deep well tunnel; it includes a support assembly (41), the surface of the support assembly (41) is fixedly connected to an arc plate (42), the surface of the arc plate (42) is fixedly connected to a straight plate (43), the arc plate (42) and the straight plate (43) are embedded in the inner side of the deep well tunnel, the top of the base (1) is fixedly connected to a reinforcement assembly (44), the top of the reinforcement assembly (44) is fixedly connected to a support pipe (45), and the support pipe (45) supports the support assembly (41); The anti-loosening mechanism (5) is used to pour concrete mortar into the interior of the support assembly (41), and the mortar overflows through the support assembly (41) to fill the gap between the curved plate (42) and the straight plate (43). At the same time, the mortar fills and supports the gap in the deep well tunnel; The bottom of the support assembly (41) is fixedly connected to the top of the base (1), and the reinforcement assembly (44) is filled with concrete at a position below the base (1). After the concrete solidifies, the base (1) is fixedly connected to the tunnel ground via a threaded rod (3); The anti-loosening mechanism (5) comprises a mechanism body (51), the surface of the mechanism body (51) is fixedly connected to the surface of the support assembly (41), and the side of the mechanism body (51) away from the support assembly (41) is fixedly connected to a sealing assembly (52); the surface of the sealing assembly (52) is fixedly connected to an anchor rod (53), and the surface of the anchor rod (53) is fixedly connected to a spiral sheet (54); the side of the mechanism body (51) close to the sealing assembly (52) is fixedly connected to a fixed body (55), and the surface of the fixed body (55) is fixedly connected to a limiting assembly (56).

2. The deep well tunnel anti-impact ground pressure support device according to claim 1, characterized in that: The support assembly (41) comprises a concrete body (411), the bottom of the concrete body (411) is fixedly connected to the top of the base (1), and a grouting hole (412) is provided inside the concrete body (411), and the grouting hole (412) extends to the outside of the concrete body (411).

3. The deep well tunnel anti-impact ground pressure support device according to claim 2, characterized in that: The surface of the concrete body (411) is provided with an opening (413), the opening (413) connecting the grouting hole (412) with the outside of the concrete body (411), and the surface of the concrete body (411) is provided with an embedding groove (414).

4. The deep mine tunnel anti-impact ground pressure support device according to claim 3, characterized in that: The reinforcement assembly (44) comprises a fixing plate (441), the bottom of the fixing plate (441) being fixedly connected to the top of the base (1), an extension tube (442) being fixedly connected to the surface of the fixing plate (441), and the bottom end of the extension tube (442) extending to a position below the base (1).

5. The deep mine tunnel anti-impact ground pressure support device according to claim 4, characterized in that: The top end of the extension tube (442) is fixedly connected to a connecting tube (443), one end of which extends to the outside of the concrete body (411), and the top end of the threaded rod (3) is fixedly connected to the bottom of the inner side of the support tube (45).

6. The deep well tunnel anti-impact ground pressure support device according to claim 5, characterized in that: The sealing assembly (52) comprises a limiting plate (521), the surface of the limiting plate (521) is fixedly connected to the surface of the mechanism body (51), and a sealing ring (522) is fixedly connected to the middle position of the inner side surface of the limiting plate (521).

7. The deep mine tunnel anti-impact ground pressure support device according to claim 6, characterized in that: The inner side surface of the sealing ring (522) is rotatably connected to the surface of the anchor rod (53); a hole is provided on the surface of the anchor rod (53) at a position away from the sealing ring (522); and a toothed ring (523) is fixedly connected to one end of the surface of the anchor rod (53) close to the sealing ring (522).

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