A kind of coal mine tunneling roadway protection plate

Abstract

The utility model relates to the technical field of coal mine roadway protection, specifically relates to a kind of coal mine mining roadway protection plate, adopt the splicing structure of multiple rubber mat, and the half-arc groove is arranged at the length two side edges of each mat, the two side half-arc grooves are accurately matched to form the longitudinal drainage channel when the adjacent mat splicing is penetrated, effectively guide surface water directional discharge;Except groove body, the anti-skid strip of staggered convex is uniformly distributed on the top surface of mat, and the frictional resistance of personnel walking is enhanced;The bottom surface is provided with spaced arrangement of rubber point, and the adsorption force generated by rubber point prevents displacement, and the interval layout is in the state of compaction, to form micro-gap drainage network between mat bottom surface and ground, to allow underground seepage water to flow freely;The design changes the state that the bottom surface of traditional mat is completely sealed, through the double dredging structure of surface drainage channel and bottom gap, significantly reduces the risk of water retention under mat, reduces the phenomenon that groundwater extrusion reverse osmosis to board surface aggravates wet and slippery, and synergistically improves the safety factor of roadway walking.

Description

Technical Field

[0001] This utility model relates to the field of coal mine roadway protection technology, and in particular to a protective plate for coal mine mining roadways. Background Technology

[0002] In coal mining operations, the excavated roadways serve as crucial passageways for personnel and equipment, and their surface conditions directly impact safety and efficiency. Deep underground, the geological environment is damp, and seepage and water infiltration from the rock strata or the work itself are common. This results in slippery roadway surfaces, with accumulated water mixed with coal slurry, creating a potential hazard zone. Slippery surfaces easily cause workers to slip and fall, and also affect the stable movement of machinery, seriously threatening underground work safety and reducing work efficiency.

[0003] To address the slippery conditions of tunnel floors, a common practice is to lay rubber mats. These mats are typically made of wear-resistant rubber and have textured or raised surfaces. The core purpose of laying rubber mats is to significantly improve the traction of pedestrians and machinery tires in wet conditions through the elasticity of the rubber material itself and the added surface texture. The rubber layer effectively "covers" the slippery coal sludge surface, directly providing a relatively safe and stable walking surface, and to some extent mitigating the risks of falls and equipment slippage caused by slippery ground.

[0004] However, while laying these traditional, monolithic or simply assembled rubber mats solves the problem of slippery surfaces, it introduces a new and critical issue: obstructing drainage paths and exacerbating water accumulation or stagnation beneath the mats. Rubber mats are inherently waterproof and impermeable. When laid extensively and tightly on the tunnel floor, their bottom forms an almost completely sealed contact surface with the original tunnel floor. This prevents groundwater seeping from the tunnel roof or sidewalls, or gushing from the ground, from naturally seeping out or flowing laterally through the mats. The water is completely trapped beneath the rubber mats, forming a water layer between the mats and the tunnel floor. This seal not only hinders the drainage of groundwater to low-lying areas or ditches, causing long-term water stagnation and soaking of the foundation, accelerating its softening and damage, but more seriously, the water accumulated beneath the mats is squeezed to the surface when people walk or machinery drives over it, further increasing the slipperiness of the rubber mat surface and partially negating its initial anti-slip purpose. Furthermore, the inability to drain water increases the risk of microbial growth under the pad and premature aging of the rubber pad. Utility Model Content

[0005] The purpose of this utility model is to provide a protective plate for coal mine roadways, which solves the technical problem that traditional rubber pads, after being laid, cause water to accumulate under the pads for a long time due to obstructing the drainage path, thereby increasing the risk of slippery pad surfaces.

[0006] To achieve the above objectives, this utility model provides a protective plate for coal mine roadways, comprising multiple rubber pads that are fitted together. Several semi-circular grooves are spaced apart on both sides of the length of each rubber pad. After the lengths of the multiple rubber pads are fitted together, multiple sets of rubber pads form a protective plate structure for the ground. The semi-circular grooves combine to form drainage channels. Several staggered anti-slip strips arranged at the top blank space of each rubber pad form a top anti-slip structure. Several spaced adhesive dots arranged at the bottom blank space of each rubber pad form a bottom anti-slip structure and a bottom drainage gap.

[0007] The rubber pad has several through-type connecting grooves spaced apart along its length on both sides of its top end. The included angle of the inner wall of the connecting groove is set to an obtuse angle, and the opening of the connecting groove extends to one side of its length to form a plate groove.

[0008] The connecting groove contains two sets of vertically inserted connecting blocks, one from top to bottom and the other from bottom to top. The connecting blocks are connected by connecting screws that pass through them and are threaded together.

[0009] Each group of connecting blocks consists of two blocks, and a connecting plate is fixedly installed between the two connecting blocks in each group. After the connecting blocks are embedded in the connecting groove, the connecting plate is embedded in the groove.

[0010] The rubber pad is internally wrapped with several transverse steel wires, several longitudinal steel wires and several diagonal steel wires, which are welded and fixed to form an internal wire mesh structure.

[0011] The ends of the transverse steel wire, longitudinal steel wire, and diagonal steel wire are welded to the ends of adjacent steel wires to form a closed-loop structure of wire mesh.

[0012] This utility model discloses a protective plate for coal mine roadways. Its core technology lies in constructing a pavement structure that combines efficient drainage with stable anti-slip functionality. The device consists of multiple tightly interlocking rubber pads, each with semi-circular grooves spaced along its longitudinal edges. When adjacent pads are laid tightly together along their length, the corresponding semi-circular grooves on both sides automatically align and connect, forming a continuous, penetrating longitudinal drainage channel. This design ensures that water accumulated on the pad surface can be rapidly and directionally drained through these combined channels, preventing water film retention.

[0013] In addition to its drainage function, the surface of the rubber mat has been specifically enhanced for anti-slip performance. The top surface (the area where people walk) is covered with a fixed network of crisscrossing, raised anti-slip strips, excluding drainage channels and pre-reserved connection areas. These interlocking raised structures significantly increase the friction of the contact surface, forming a stable and reliable anti-slip layer, ensuring safe passage for personnel in wet environments. Simultaneously, on the bottom surface of the rubber mat (the side in contact with the tunnel floor), except for necessary connection structures, evenly distributed raised adhesive dots are arranged. These bottom adhesive dots not only increase adhesion, stabilize the mat's position, and prevent overall slippage, but their spacing is crucial: when the mat is laid and compressed, the support height of the adhesive dots ensures that the bottom surface of the mat is not completely flush with the tunnel floor, but rather naturally leaves tiny gaps between the dots. These gaps constitute important bottom drainage channels, allowing groundwater seeping from or rising from the tunnel floor to flow smoothly laterally or infiltrate into low-lying areas.

[0014] The combined top semi-circular drainage channel actively collects and diverts surface seepage, spraying, or flushing water, quickly leading it away from the working surface. Meanwhile, the drainage gaps formed by the adhesive dots at the bottom change the traditional physical blockage of groundwater flow by integral rubber mats. Groundwater can seep out and drain away through these gaps, reducing the risk of collapse caused by long-term water immersion in the mat, and also reducing the phenomenon of water accumulated under the mat being squeezed to the surface by stepping or running over it. Therefore, this invention, while providing surface anti-slip performance, also helps to improve the problem of traditional rubber mat laying methods affecting the groundwater flow path and potentially exacerbating the slippery surface of the mat through the structure formed by the top drainage channel and bottom drainage gaps. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the bottom structure of the rubber pad in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the connecting block in an embodiment of the present invention.

[0019] Figure 4 This is a plan view of the rubber pad of an embodiment of the present invention.

[0020] Figure 5 This is an embodiment of the present utility model. Figure 2 Enlarged diagram of point A in the middle.

[0021] In the diagram: 101, rubber pad; 102, semi-circular groove; 103, anti-slip strip; 104, adhesive dot; 105, connecting groove; 106, plate groove; 107, connecting block; 108, connecting screw; 109, connecting plate; 110, transverse steel wire; 111, longitudinal steel wire; 112, oblique steel wire. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] Please see Figures 1-4 .

[0024] This utility model provides a protective plate for coal mine tunnels. Each rubber pad 101 has semi-circular grooves 102 evenly spaced on both sides of its length. When adjacent rubber pads 101 are tightly fitted together along their length, the semi-circular grooves 102 on both sides precisely align to form a continuous and interconnected drainage channel. This structure directly guides water accumulated on the surface of the rubber pad 101 to flow directionally to the bottom. The top surface of the rubber pad 101, excluding the semi-circular grooves 102 and the connecting structure, is fixed with several staggered anti-slip strips 103. The dense raised texture enhances the surface friction, forming an anti-slip protective layer for personnel passage. The bottom surface of the rubber pad 101 has an array of raised adhesive dots 104 fixed at intervals in the same area. The adhesive dots 104 not only generate adsorption force to prevent the overall displacement of the protective plate, but also form bottom drainage gaps through their interval arrangement, allowing groundwater to drain out through the gaps.

[0025] Several through-type connecting grooves 105 are opened on both sides of the top of the rubber pad 101 along the length direction. The inner wall of the connecting groove 105 adopts an obtuse angle design to disperse stress concentration. Its opening extends to one side to form a plate groove 106. During construction, each set of connecting blocks 107, which consists of two individual pieces, is vertically inserted into the connecting groove 105. One set of connecting blocks 107 is inserted from top to bottom, and the other set is inserted from bottom to top. The two sets of connecting blocks 107 form an upper and lower fit in the groove. Each connecting block 107 extends to the outside through a fixed connecting plate 109. When the connecting block 107 is fully embedded in the connecting groove 105, the connecting plate 109 is simultaneously embedded in the plate groove 106 to achieve lateral limitation, forming a mechanical interlock between the plate and the connecting parts. Then, the connecting screw 108 is inserted through the center hole of the upper and lower fit connecting blocks 107. The four connecting blocks 107 and the connecting screw 108 are fixed into a rigid node by tightening the thread, and finally the adjacent rubber pads 101 are firmly spliced. At this point, the continuity of the combined drainage channel of the semi-arc groove 102 is ensured, while the obtuse angle structure of the connecting groove 105 significantly reduces the risk of groove cracking caused by locking force.

[0026] During the vulcanization process of the rubber pad 101, a mesh skeleton composed of transverse steel wires 110, longitudinal steel wires 111, and diagonal steel wires 112 is pre-embedded inside. The three are fully welded at their intersections to form a three-dimensional wire mesh structure. All steel wire ends are welded and fixed to the ends of adjacent steel wires, forming a closed-loop mesh frame without free ends. This design allows the wire mesh to evenly bear external pressure, eliminating the risk of steel wire ends puncturing the surface of the rubber pad 101 due to pressure. At the same time, the three-dimensional reinforcement enhances the overall compressive strength and structural stability of the protective plate. After installation, the protective plate forms a sandwich-like functional system: the top layer of anti-slip strips 103 ensures walking safety, the middle layer of steel wire mesh resists impact loads, and the bottom layer of adhesive dots 104 array, together with the semi-circular grooves 102 drainage channels, achieves dual drainage of surface and groundwater. The entire structure works together to achieve integrated functions of support and protection, drainage and anti-slip, and puncture resistance.

[0027] Working principle: During construction, the length sides of adjacent rubber pads 101 are tightly fitted together. At this time, the semi-circular grooves 102 on both sides of each rubber pad 101 interlock to form a continuous drainage channel, which is used to guide the water accumulated on the surface of the rubber pad 101 into the bottom of the rubber pad 101, thereby ensuring that the surface of the rubber pad 101 is as dry as possible. To ensure the splicing is firm, the construction personnel embed the connecting block 107 into the through-type connecting groove 105 at the top of the rubber pad 101. The connecting groove 105 is designed with an obtuse angle on the inner wall, which effectively disperses the stress concentration when the rubber pad 101 is under tension and significantly reduces the risk of groove cracking. In specific operation, the upper and lower sets of connecting blocks 107 are connected together. 7. Insert the connecting blocks 107 into the top and bottom of the same connecting groove 105 from the vertical direction. Each set of connecting blocks 107 consists of two independent parts and is connected by a connecting plate 109 to form a whole. When the connecting block 107 is fully embedded in the connecting groove 105, its connecting plate 109 is inserted into the plate groove 106 extending from the opening of the connecting groove 105. At this time, the plate groove 106 structure firmly restricts the connecting plate 109 inside the rubber pad 101, forming a mechanical interlock. Then, the connecting screw 108 passes through the upper and lower sets of fitted connecting blocks 107 and tightens them with threads so that the four connecting blocks 107 and the screw together form a rigid connection node, and finally realizes the locking connection of adjacent rubber pads 101.

[0028] After the protective panel is laid, its functional design comes into play. The anti-slip strips 103 arranged in a staggered pattern on the top surface of the rubber pad 101 form a dense raised structure, effectively preventing slippage by increasing the friction of the contact surface. The adhesive dots 104 spaced apart on the bottom surface have a dual function: the localized adsorption force generated by the adhesive dots 104 inhibits the overall displacement of the protective panel, while the drainage gaps naturally formed between the adhesive dots 104 allow underground water to flow freely, preventing water accumulation and erosion of the foundation. Notably, the transverse steel wires 110, longitudinal steel wires 111, and diagonal steel wires 112 embedded inside the rubber pad 101 form a high-strength wire mesh skeleton through point-to-point welding. This structure significantly enhances the protective panel's compressive and bending resistance. In particular, all wire ends are welded to adjacent wires to form a closed-loop structure, eliminating the safety hazard of wire ends puncturing the rubber layer under pressure, ensuring a safe and reliable working environment in the tunnel. With the entire system operating in synergy, this protective panel possesses four technological advantages: structural stability, efficient drainage, all-around anti-slip, and active anti-puncture.

[0029] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A protective plate for coal mine roadways, comprising multiple rubber pads (101) fitted together, characterized in that: Several semi-circular grooves (102) are provided on both sides of the length of the rubber pad (101). After the length sides of multiple rubber pads (101) are attached together, multiple sets of rubber pads (101) form a protective plate structure for the ground. The semi-circular grooves (102) are combined to form a drainage channel. Several staggered anti-slip strips (103) are fixed at the top blank of the rubber pad (101) to form a top anti-slip structure. Several spaced adhesive dots (104) are fixed at the bottom blank of the rubber pad (101) to form a bottom anti-slip structure and a bottom drainage gap.

2. The protective plate for coal mine roadways as described in claim 1, characterized in that: The top two sides of the rubber pad (101) are provided with a plurality of through-type connecting grooves (105) spaced apart along the length direction. The included angle of the inner wall of the connecting groove (105) is set to an obtuse angle. The opening of the connecting groove (105) extends to one side of the length to form a plate groove (106).

3. A protective plate for coal mine roadways as described in claim 2, characterized in that: Two sets of vertically inserted connecting blocks (107) are respectively inserted from top to bottom and from bottom to top in the connecting groove (105), and connecting screws (108) pass through the connecting blocks (107) in the same position and are threaded together.

4. A protective plate for coal mine roadways as described in claim 3, characterized in that: Each set of connecting blocks (107) consists of two blocks, and a connecting plate (109) is fixedly installed between the two connecting blocks (107) in each set. After the connecting block (107) is embedded in the connecting groove (105), the connecting plate (109) is embedded in the plate groove (106).

5. A protective plate for coal mine roadways as described in claim 4, characterized in that: The rubber pad (101) is wrapped with several transverse steel wires (110), several longitudinal steel wires (111) and several oblique steel wires (112), which are welded and fixed to form an internal wire mesh structure.

6. A protective plate for coal mine roadways as described in claim 5, characterized in that: The ends of the transverse steel wire (110), longitudinal steel wire (111), and diagonal steel wire (112) are welded to the ends of adjacent steel wires to form a closed-loop structure of wire mesh.

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