A multi-layer flexible support plate for mine support

Abstract

The present application relates to the technical field of mine tunnel operation, and specifically discloses a multi-layer flexible support plate for mine support, including: a template body and a magnetic strip; the template body is used to be laid in the mine and abut against the inner wall of the mine; the template body includes: a wear-resistant layer, a buffer layer and a demoulding layer; the inner side of the demoulding layer is a side abutting against the tunnel surface; the inner side of the buffer layer abuts against the outer side of the demoulding layer; the inner side of the wear-resistant layer abuts against the outer side of the buffer layer; the outer side of the buffer layer is provided with a plurality of magnetic fluid grooves arranged in a matrix-like interval; the magnetic fluid groove is provided with a magnetic fluid that can flow in the magnetic fluid groove; the template body and the magnetic strip at least include: a flat state, a folded angle state and a semi-curled state. Through the cooperation of the magnetic strip and the magnetic fluid in the template body, it can adapt to the flattening environment, the environment that requires folding angles and the environment with limited length, and effectively improve the flexibility of the flexible support plate.

Description

Technical Field

[0001] The present application relates to the technical field of mine tunnel operations, and in particular to a multi-layer flexible support plate for mine support. Background Art

[0002] During the mining operation in the mine, temporary and permanent support is required for the tunnel. For long-term stable tunnels and mining faces with a long service life, permanent support can be used; for the initial stage of newly excavated tunnels, temporary passages and other areas, temporary support is required.

[0003] Flexible support plates are a commonly used temporary support structure, which generally have a wear-resistant layer, a flexible layer and a high-strength material layer. They can be bent or curled to a certain extent and have good wear resistance. However, existing flexible support plates generally only have two states: unfolded and rolled up. In complex mining operations, there is a problem of insufficient flexibility; for example, in some arched tunnels, existing flexible support plates need to be bent and propped up, and another support structure is often required for this purpose; for another example, when the length of the flexible support plate is too long, the template that exceeds the length needs to be folded or cut, and the template may be damaged after a long period of folding, which is not conducive to the subsequent reuse of the template. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a multi-layer flexible support plate for mine support, so as to solve the problem of low flexibility of existing flexible support plates.

[0005] In order to achieve the above technical purpose, the present application provides a multi-layer flexible support plate for mine support, comprising: a template body and a magnetic strip;

[0006] The template body is used to be laid in a mine and abut against the inner wall of the mine;

[0007] The template body comprises: a wear-resistant layer, a buffer layer and a demoulding layer;

[0008] The inner side of the demoulding layer is a side that abuts against the roadway surface;

[0009] The inner side of the buffer layer abuts against the outer side of the release layer;

[0010] The inner side of the wear-resistant layer abuts against the outer side of the buffer layer;

[0011] The outer side of the buffer layer is provided with a plurality of magnetic fluid grooves arranged at intervals in a matrix;

[0012] The magnetic fluid tank is provided with a magnetic fluid that can flow in the magnetic fluid tank;

[0013] When the template body is laid flat on the inner wall of the mine, the template body is in a fully expanded state, the magnetic strip is arranged on the template body at a position corresponding to the magnetic fluid groove, and the length direction of the magnetic strip is parallel to the expansion direction of the template body;

[0014] When the template body is laid in the corner area of ​​the mine, at least one magnetic fluid groove is located at the corner of the mine, the magnetic stripe is arranged on the template body at the position of the magnetic fluid groove at the corner, and the length direction of the magnetic stripe is perpendicular to the unfolding direction of the template body, and the template body is bent in an angle along the position of the magnetic stripe;

[0015] When the template body is semi-curled and laid on the inner wall of the mine, the template body is in a partially unfolded state, and a critical area is between the unfolded area and the curled area of ​​the template body. The magnetic strip is arranged in the critical area and the magnetic strip is magnetically connected to the magnetic fluid in the unfolded area and the magnetic fluid in the curled area respectively.

[0016] Furthermore, the wear-resistant layer is provided with an inlet and outlet;

[0017] The inlet and outlet are sealed by a sealant;

[0018] The inlet and outlet are used to allow the fluid to flow out of the tank body mold forming the magnetic fluid tank after the template body is integrally formed;

[0019] The inlet and outlet are also used for providing a syringe to inject the magnetic fluid into the magnetic fluid tank after the magnetic fluid flows out of the tank body mold.

[0020] Furthermore, the sealant is polyurethane sealant.

[0021] Furthermore, the outer side surface of the wear-resistant layer is an undulating surface;

[0022] The inlet and outlet are arranged in a recessed area on the outer side of the wear-resistant layer.

[0023] Furthermore, the trough body mold is made of a soluble material or a gasifiable material.

[0024] Further, the magnetic fluid tank comprises an outer frame, a middle frame and an inner frame;

[0025] The outer frame is rhombus-shaped;

[0026] The middle frame is rectangular and is inserted into the outer frame, and the four end corners of the middle frame are connected to the outer frame;

[0027] The inner frame is in a cross shape, is located inside the outer frame, and serves as two diagonal lines of the outer frame connecting the four end corners of the inner frame;

[0028] The middle frame is communicated with the inner frame.

[0029] Furthermore, the magnetic fluid tank is a centrosymmetric structure.

[0030] Furthermore, the wear-resistant layer includes a synthetic rubber layer and a waterproof layer which are bonded to each other.

[0031] Furthermore, the buffer layer includes a rubber layer and a synthetic fiber layer.

[0032] Furthermore, the demoulding layer is a polytetrafluoroethylene layer.

[0033] It can be seen from the above technical scheme that the present application provides a multi-layer flexible support plate for mine support, including: a template body and a magnetic strip; the template body is used to be laid in the mine and abut against the inner wall of the mine; the template body includes: a wear-resistant layer, a buffer layer and a release layer; the inner side of the release layer is a side abutting the tunnel surface; the inner side of the buffer layer abuts the outer side of the release layer; the inner side of the wear-resistant layer abuts the outer side of the buffer layer; a plurality of magnetic fluid grooves arranged in a matrix manner are arranged on the outer side of the buffer layer; a magnetic fluid that can flow in the magnetic fluid groove is arranged in the magnetic fluid groove; when the template body is laid flat on the inner wall of the mine, the template body is in a fully expanded state, and the magnetic strip is arranged on the template body at a position corresponding to the magnetic fluid groove. On, and the length direction of the magnetic strip is parallel to the unfolding direction of the template body; when the template body is laid on the corner area of ​​the mine, at least one of the magnetic fluid grooves is located at the corner of the mine, the position of the magnetic strip corresponding to the magnetic fluid groove at the corner is set on the template body, and the length direction of the magnetic strip is perpendicular to the unfolding direction of the template body, and the template body is bent in an angle shape along the position of the magnetic strip; when the template body is semi-curled and laid on the inner wall of the mine, the template body is in a partially unfolded state, and the critical area is between the unfolding area and the curling area of ​​the template body, the magnetic strip is set in the critical area and the magnetic strip is magnetically connected to the magnetic fluid in the unfolding area and the magnetic fluid in the curling area respectively.

[0034] In this solution, through the cooperation of magnetic strips and magnetic fluid in the template body, the template body can be formed into a flat state, a folded state and a semi-curled state; compared with the existing flexible support plate that only has two states, unfolded and rolled up, this solution can more effectively improve the flexibility, and in the folded state and semi-rolled state, the flexible support plate can be shaped through the cooperation of magnetic strips and magnetic fluid grooves, thereby increasing its stability, making the flexible support plate more suitable for flat environments, environments that require folding, and environments with limited length. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 A partial side perspective view of a multi-layer flexible support plate for mine support provided in an embodiment of the present application;

[0037] Figure 2 A partial side perspective view of a template body of a multi-layer flexible support plate for mine support provided by another embodiment of the present application;

[0038] Figure 3 A partial schematic diagram of a multi-layer flexible support plate for mine support provided in an embodiment of the present application in a flattened state;

[0039] Figure 4 A partial schematic diagram of a multi-layer flexible support plate for mine support in a folded angle state provided in an embodiment of the present application;

[0040] Figure 5 A partial schematic diagram of a multi-layer flexible support plate for mine support in a semi-curled state provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0042] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which 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 limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0043] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0044] See also Figure 1 , Figure 1 A side partial perspective view of a template body 100 and a magnetic strip 200 provided in this embodiment; A multi-layer flexible support plate for mine support includes: a template body 100 and a magnetic strip 200.

[0045] The template body 100 provided in this solution is used to be laid in a mine and abut against the inner wall of the mine to provide temporary support for the mine. The template body 100 includes: a wear-resistant layer 110, a buffer layer 120 and a release layer 130. The inner side of the release layer 130 abuts against the side of the tunnel surface; the inner side of the buffer layer 120 abuts against the outer side of the release layer 130; the inner side of the wear-resistant layer 110 abuts against the outer side of the buffer layer 120.

[0046] In this embodiment, the main function of the wear-resistant layer 110 is to resist wear and friction and protect the internal structure of the template. The thickness of the wear-resistant layer 110 can usually be between 2 mm and 5 mm. In a mine environment, the thickness of the wear-resistant layer 110 can be selected to be 5 mm.

[0047] The buffer layer 120 mainly plays the role of absorbing impact force and reducing vibration transmission. In order to improve the safety of mine tunnel operations and facilitate the arrangement of the magnetic fluid tank 121 described below, the thickness of the buffer layer 120 can be set to 12 mm to 15 mm.

[0048] The release layer 130 is used to facilitate the separation of the formwork from materials such as concrete, and its thickness may be 0.5 mm to 1.5 mm.

[0049] Optionally, see Figure 2 , Figure 2 A partial side perspective view of a template body 100 provided in accordance with another embodiment of the present application.

[0050] The wear-resistant layer 110 includes a synthetic rubber layer 112 and a waterproof layer 113 which are bonded to each other. The synthetic rubber layer 112 can resist scratching and abrasion by sharp objects, ensuring that the template maintains a good appearance and performance in the harsh mine environment; the waterproof layer 113 can prevent moisture from penetrating into the template, avoiding damage to the template due to moisture, and can also resist erosion by corrosive substances, maintaining the stability and reliability of the template.

[0051] Optionally, the buffer layer 120 includes a rubber layer 122 and a synthetic fiber layer 123. The rubber layer 122 can absorb and mitigate external impact forces and reduce damage to the formwork. In a mine, rock falls, equipment collisions, etc. may occur, and the rubber layer 122 can play a shock-absorbing role to protect the safety of the formwork and surrounding personnel and equipment. The synthetic fiber layer 123 is composed of fiber materials, such as glass fiber, carbon fiber or high-strength synthetic fiber; the synthetic fiber layer 123 gives the formwork higher strength and rigidity, and can withstand the pressure and impact force in the mine. It can effectively disperse external forces, prevent the formwork from excessive deformation or rupture when subjected to force, and provide reliable support for mine support.

[0052] Optionally, the release layer 130 is a polytetrafluoroethylene layer. The release layer 130 can reduce the friction between the template and the concrete surface, so that the template can be smoothly separated from the concrete structure during disassembly, thereby avoiding damage to the concrete surface.

[0053] In this embodiment, please refer to Figure 1 and Figure 3 , Figure 3 A partial front perspective view of the multi-layer flexible support plate for mine support provided in this embodiment in a flat state.

[0054] A plurality of magnetic fluid grooves 121 arranged in a matrix and spaced apart are disposed outside the buffer layer 120; a magnetic fluid 140 is disposed in the magnetic fluid grooves 121 and can flow in the magnetic fluid grooves 121. The magnetic fluid 140 can be magnetically matched with the magnetic strip 200.

[0055] like Figure 3 As shown, when the magnetic stripe 200 is not placed, the magnetic fluid 140 in the magnetic fluid slot 121 is randomly distributed due to the influence of factors such as the placement angle of the template at this time. After the magnetic stripe 200 is placed, the magnetic particles in the magnetic fluid 140 will be arranged along the direction of the magnetic field, causing the magnetic fluid 140 to gather in the area with a larger magnetic field intensity. In this case, part of the magnetic fluid in the magnetic fluid 140 slot close to the magnetic stripe 200 will move to this area, forming a local aggregation phenomenon, causing the position where the magnetic stripe 200 is placed on the template to be locally hardened.

[0056] In order to facilitate the taking and placing of the magnetic strip 200 , a gripping member 210 may be provided on the magnetic strip 200 . It should be noted that the magnetic strip 200 may be in a sheet shape to reduce the weight of the magnetic strip 200 , specifically, the magnetic strip 200 may be able to gather the magnetic fluid 140 .

[0057] The template body 100 and the magnetic strip 200 provided in this embodiment at least include: a flat state, a folded corner state and a semi-curled state.

[0058] See also Figure 3When the template body 100 is laid flat on the inner wall of the mine, the template body 100 is in a fully unfolded state, and the magnetic strip 200 is arranged on the template body 100 at a position corresponding to the magnetic fluid groove 121, and the length direction of the magnetic strip 200 is parallel to the unfolding direction of the template body 100. The magnetic strip 200 is in sheet shape; the magnetic strip 200 is arranged on the outer side of the wear-resistant layer 110.

[0059] In the template body 100, the magnetic fluid grooves 121 are distributed in an array and divided into multiple rows and columns. In this embodiment, the direction parallel to the expansion direction of the template body 100 is called a row; the direction perpendicular to the expansion direction of the template body 100 is called a column. In practical applications, magnetic stripes 200 can be provided on each row of magnetic fluid grooves 121, or magnetic stripes 200 can be provided on the magnetic fluid grooves 121 on some rows. After the magnetic stripes 200 are provided, since the magnetic stripes 200 are parallel to the expansion direction of the template body 100, the magnetic fluid 140 will gather along the length direction of the magnetic stripes 200, so that the template body 100 is hardened locally along the expansion direction, which helps to better lay the template body 100.

[0060] See also Figure 4 , Figure 4 It is a combined diagram of the template body 100 and the magnetic strip 200 in a folded state, wherein the template body 100 is in a perspective state.

[0061] When the template body 100 is laid in the corner area of ​​the mine, at least one magnetic fluid groove 121 is located at the corner of the mine; in actual application, a row of magnetic fluid grooves 121 can be located at the corner of the mine; the magnetic stripe 200 is arranged on the template body 100 corresponding to the position of the magnetic fluid groove 121 at the corner, and the length direction of the magnetic stripe 200 is perpendicular to the unfolding direction of the template body 100, and the template body 100 is bent in an angle shape along the position of the magnetic stripe 200.

[0062] Specifically, when the magnetic strip 200 is placed vertically on the template body 100, it can attract the magnetic fluid 140 to gather in the vertical direction and partially harden, so as to facilitate the bending of the template body 100 to cope with the operation situation that requires the template body 100 to form a corner.

[0063] It should be noted that, at the corners on the roadway surface, there may be iron nails or other objects for magnetically engaging the magnetic strips 200. After the magnetic strips 200 are arranged at the corners, they can also be magnetically engaged with the iron nails to assist in the laying of the template body 100.

[0064] See also Figure 5 , Figure 5 It is a combined diagram of the template body 100 and the magnetic strip 200 in a semi-curled state, wherein the unfolded area of ​​the template body 100 is in a perspective state.

[0065] When the template body 100 is semi-curled and laid on the inner wall of the mine, the template body 100 is in a partially unfolded state, and the area between the unfolded area and the curled area of ​​the template body 100 is a critical area. The magnetic strip 200 is arranged in the critical area and the magnetic strip 200 is magnetically connected to the magnetic fluid 140 in the unfolded area and the magnetic fluid 140 in the curled area respectively.

[0066] Specifically, when the template body 100 needs to be semi-curled, the template body 100 can be unfolded until the magnetic fluid groove 121 is located in the critical area; since there are magnetic fluid grooves 121 in both the unfolded area and the curled area, the magnetic strip 200 located between the two can adsorb both at the same time, thereby temporarily fixing the template body 100 in the semi-curled state, making it convenient for the staff to use other tools to fix the template body 100 in this state, thereby improving the convenience of the operation.

[0067] In summary, it can be seen that the multi-layer flexible support plate for mine support provided in this embodiment can better cope with operations requiring folding angles and insufficient length compared to existing flexible support plates, and has higher flexibility.

[0068] In application, since a multi-layer flexible support plate for mine support in this embodiment is formed in one step, the structure of the magnetic fluid groove 121 forms a matching corresponding mold, so that after the mold body 100 is integrally formed, a corresponding groove area can be formed in the buffer layer 120. In order to facilitate the removal of the mold after molding, an inlet and outlet 111 is provided on the wear-resistant layer 110. After the template body 100 is integrally formed, the inlet and outlet 111 is used for the outflow of the groove mold forming the magnetic fluid groove 121, and then the syringe can be inserted into the inlet and outlet 111 to inject the magnetic fluid 140 into the magnetic fluid groove 121. Finally, the inlet and outlet 111 are sealed with a sealant.

[0069] In the application, the sealant is polyurethane sealant with high wear resistance.

[0070] Furthermore, the outer side surface of the wear-resistant layer 110 is an undulating surface; the inlet and outlet 111 are arranged in the concave area of ​​the outer side surface of the wear-resistant layer 110 , which can further reduce the wear of the sealant on the inlet and outlet 111 .

[0071] Furthermore, in order to ensure that the trough body mold can be taken out from the inlet and outlet 111, the trough body mold is made of a soluble material or a gasifiable material.

[0072] Specifically, the tank mold can be, for example, polycarbonate, water-soluble resin or a special salt mixture, so that it can withstand the temperature during the integral molding process of the template body 100 and can be dissolved in water. Among them, the special salt mixture can be, for example, a mixture of sodium carbonate (Na2CO3) and potassium carbonate (K2CO3), which has good stability at high temperatures and can withstand certain high temperatures. They can be dissolved in some specific solvents. For example, in an acidic solution, carbonate ions react with the acid to generate carbon dioxide and water, thereby dissolving.

[0073] In one embodiment, see Figure 3 The magnetic fluid tank 121 includes an outer frame, a middle frame and an inner frame; the outer frame is rhombus-shaped; the middle frame is rectangular, and the middle frame is embedded in the outer frame, and the four end corners of the middle frame are connected to the outer frame; the inner frame is cross-shaped, the inner frame is located in the outer frame, and serves as two diagonals of the outer frame to connect the four end corners of the inner frame; the middle frame is connected to the inner frame.

[0074] Specifically, the magnetic fluid tank 121 is a centrosymmetric structure.

[0075] In this embodiment, the structure of the outer frame and the inner frame facilitates the magnetic fluid 140 to flow under the attraction of the magnetic stripe 200. At the same time, the inner frame facilitates the magnetic fluid 140 to be arranged horizontally or vertically. On the one hand, the middle frame facilitates the flow of the magnetic fluid 140 to prevent the magnetic fluid 140 from being stuck in a dead corner. On the other hand, it enables the magnetic stripe 200 to be arranged at a non-central position of the magnetic fluid slot 121, that is, the magnetic stripe 200 can be arranged at the corner position of the middle frame, allowing the magnetic stripe 200 to be adjusted within the range of the magnetic fluid slot 121, thereby further improving the overall flexibility of the flexible support plate.

[0076] Optionally, the template body 100 may be provided with a plurality of through holes; when the template body 100 is integrally formed, the through holes can be formed so that fixing objects can pass through and the template body 100 can be better fixed on the roadway surface.

[0077] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A multi-layer flexible support plate for mine support, characterized in that: include: The template body (100) and the magnetic strip (200); The template body (100) is used to be laid in a mine and abut against the inner wall of the mine; The template body (100) comprises: a wear-resistant layer (110), a buffer layer (120) and a demoulding layer (130); The inner side of the demoulding layer (130) is a side that abuts against the tunnel surface; The inner side of the buffer layer (120) abuts against the outer side of the demoulding layer (130); The inner side of the wear-resistant layer (110) abuts against the outer side of the buffer layer (120); A plurality of magnetic fluid grooves (121) arranged at intervals in a matrix are arranged on the outer side of the buffer layer (120); A magnetic fluid (140) that can flow in the magnetic fluid groove (121) is arranged in the magnetic fluid groove (121); When the template body (100) is laid flat on the inner wall of the mine, the template body (100) is in a fully unfolded state, the magnetic strip (200) is arranged on the template body (100) at a position corresponding to the magnetic fluid groove (121), and the length direction of the magnetic strip (200) is parallel to the unfolding direction of the template body (100); When the template body (100) is laid in the corner area of ​​the mine, at least one magnetic fluid groove (121) is located at the corner of the mine, the magnetic strip (200) is arranged on the template body (100) at a position corresponding to the magnetic fluid groove (121) at the corner, and the length direction of the magnetic strip (200) is perpendicular to the unfolding direction of the template body (100), and the template body (100) is bent in an angle shape along the position of the magnetic strip (200); When the template body (100) is semi-curled and laid on the inner wall of the mine, the template body (100) is in a partially unfolded state, a critical area is formed between the unfolded area and the curled area of ​​the template body (100), the magnetic strip (200) is arranged in the critical area, and the magnetic strip (200) is magnetically connected to the magnetic fluid (140) in the unfolded area and the magnetic fluid (140) in the curled area respectively; The wear-resistant layer (110) is provided with an inlet and outlet (111); The inlet and outlet (111) are sealed by a sealant; The inlet and outlet (111) is used to allow fluid to flow out of a slot body mold forming the magnetic fluid slot (121) after the template body (100) is integrally formed; The inlet and outlet (111) is also used for allowing a syringe to inject the magnetic fluid (140) into the magnetic fluid tank (121) after the magnetic fluid flows out of the tank body mold.

2. The multi-layer flexible support plate for mine support according to claim 1, characterized in that: The sealant is polyurethane sealant.

3. The multi-layer flexible support plate for mine support according to claim 1, characterized in that: The outer side surface of the wear-resistant layer (110) is an undulating surface; The inlet and outlet (111) are arranged in a recessed area on the outer side surface of the wear-resistant layer (110).

4. The multi-layer flexible support plate for mine support according to claim 1, characterized in that: The trough body mold is made of a soluble material or a gasifiable material.

5. The multi-layer flexible support plate for mine support according to claim 1, characterized in that: The magnetic fluid tank (121) comprises an outer frame, a middle frame and an inner frame; The outer frame is rhombus-shaped; The middle frame is rectangular and is inserted into the outer frame, and the four end corners of the middle frame are connected to the outer frame; The inner frame is in a cross shape, is located inside the outer frame, and serves as two diagonal lines of the outer frame connecting the four end corners of the inner frame; The middle frame is communicated with the inner frame.

6. The multi-layer flexible support plate for mine support according to claim 1, characterized in that: The magnetic fluid tank (121) is a centrosymmetric structure.

7. The multi-layer flexible support plate for mine support according to claim 1, characterized in that: The wear-resistant layer (110) comprises a synthetic rubber layer (112) and a waterproof layer (113) which are bonded to each other.

8. The multi-layer flexible support plate for mine support according to claim 1, characterized in that: The buffer layer (120) comprises a rubber layer (122) and a synthetic fiber layer (123).

9. The multi-layer flexible support plate for mine support according to claim 1, characterized in that: The demoulding layer (130) is a polytetrafluoroethylene layer.

Images