CN220101326U

CN220101326U - Mine heat damage site cooling protection device based on roadway wall

Info

Publication number: CN220101326U
Application number: CN202321222749.1U
Authority: CN
Inventors: 牛林; 金正骄; 王滢溪; 温舒超; 谷贵雨
Original assignee: Henan University of Technology
Current assignee: Henan University of Technology
Priority date: 2023-05-19
Filing date: 2023-05-19
Publication date: 2023-11-28
Anticipated expiration: 2033-05-19

Abstract

The utility model relates to a mine heat damage scene cooling protector based on tunnel wall, including the heat conduction piece, the heat insulating board, a heat exchanger, low temperature supply pipe, high temperature back flow, cooling guard plate and direction slide rail, the cooling chamber is established to the terminal surface before the heat insulating board, the heat exchange chamber is established to the rear end face, at least one heat exchanger is established to the heat exchange intracavity, the heat exchanger passes through water conservancy diversion branch pipe and low temperature supply pipe, high temperature back flow intercommunication, the heat exchanger surface offsets with a plurality of heat conduction piece in addition, the heat conduction piece latter half is located the heat exchange intracavity, first half is located the heat exchange chamber and offsets with the tunnel wall, low temperature supply pipe is connected with the terminal surface before the heat insulating board, high temperature back flow is connected with the heat insulating board rear end face, the cooling guard plate inlays in the cooling intracavity of heat insulating board and through direction slide rail and cooling chamber lateral wall sliding connection. The utility model discloses can effectively satisfy the needs of the supporting operation of different mine tunnel and setting, equipment heat exchange efficiency is high simultaneously, can effectually carry out heat recovery and cooling protection operation to the high temperature environment in the tunnel.

Description

Mine heat damage site cooling protection device based on roadway wall

Technical Field

The utility model relates to a mine heat damage scene cooling protector based on tunnel wall belongs to mining equipment and harm prevention and cure equipment technical field.

Background

At present, in the treatment of construction heat injury of mines, tunnels and the like, especially in the treatment of deep high-temperature mines, cooling water flowing at a high speed is mainly and rapidly injected into mine tunnels, and heat exchange is carried out between the cooling water flowing and the mine tunnels, so that the purposes of reducing the temperature in the mines and treating the heat injury are achieved, and meanwhile, the effect of recycling geothermal resources of the mines is achieved by utilizing the heat exchange of the cooling water.

Meanwhile, when the current heat damage protection treatment system is operated, the current heat damage protection treatment system cannot be synchronously constructed with staff, and in the heat damage treatment of the tunnel, the effective protection to the high-temperature rock wall and the equipment surface in the tunnel is lacked, and the effective protection to the falling rock and overflowing high Wen Shuiti in the tunnel is lacked, so that the current high-temperature mine construction flexibility and safety are further poor, and the actual working requirement is difficult to meet.

Therefore, in order to overcome the defects of the prior art, there is an urgent need to provide a mine heat damage on-site cooling protection device based on a roadway wall, which aims to solve some existing equipment problems.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides a mine heat damage scene cooling protection device based on tunnel wall, this novel integration, modularization degree is high, environmental adaptation ability is strong, can effectively satisfy the needs of the supporting operation of different mine tunnel and setting, equipment heat exchange efficiency is high simultaneously, can effectually carry out heat recovery and cooling protection operation to the high temperature environment in the tunnel, simultaneously in operation can prevent in addition effectively that tunnel wall high temperature from causing the damage to the staff, effectively prevent the rock mass that the tunnel wall drops, the interference that the high temperature groundwater that overflows caused to the interior operational environment of tunnel, thereby the security of effectual improvement high temperature mine tunnel safety protection ability and construction.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

the mine heat damage site cooling protection device based on the tunnel wall comprises a heat conduction block, a heat insulation plate, a heat exchanger, a low-temperature supply pipe, a high-temperature return pipe, a cooling protection plate and a guide sliding rail, wherein a plurality of heat insulation plates are in an I-shaped groove-shaped structure with transverse sections, the axes of the heat insulation plates are parallel to the horizontal plane, the front end surface of the heat insulation plates is provided with a cooling cavity, the rear end surface of the heat insulation plates is provided with a heat exchange cavity, at least one heat exchanger is arranged in the heat exchange cavity, the heat exchangers are communicated with the low-temperature supply pipe through a flow guide branch pipe, meanwhile, each heat exchanger is communicated with the high-temperature return pipe through the flow guide branch pipe, and all the heat exchangers are mutually connected in parallel, in addition, the outer surfaces of the heat exchangers are mutually abutted against a plurality of heat conduction blocks, the rear half parts of the heat conduction blocks are positioned in the heat exchange cavity and are connected with the side walls of the heat exchange cavity, the front half parts of the heat conduction blocks are mutually abutted against the tunnel wall, and the low-temperature supply pipe and the high-temperature return pipe are at least one, the axes of the low-temperature supply pipe and the high-temperature return pipe are parallel to the surface of the heat insulation board, wherein the low-temperature supply pipe is connected with the front end face of the heat insulation board, the high-temperature return pipe is connected with the rear end face of the heat insulation board, the distance between the low-temperature supply pipe and the high-temperature return pipe and the bottom of the cooling cavity of the heat insulation board is not more than 50% of the depth of the cooling cavity and the heat exchange cavity, the high-temperature return pipe is positioned between the heat exchanger and the bottom of the heat exchange cavity, at least one cooling protection plate is embedded in the cooling cavity of the heat insulation board and is in sliding connection with the side wall of the cooling cavity through a guide sliding rail, the distribution directions of the heat insulation boards of the guide sliding rail axes are parallel, the guide sliding rails of the heat insulation boards are propped against and are communicated, the cooling protection plate is further communicated with the low-temperature supply pipe and the high-temperature return pipe through a plurality of guide ports distributed along the axial directions of the low-temperature supply pipe and the high-temperature return pipe, and is communicated with the diversion branch pipe and the flexible connecting pipe through the diversion port.

Further, the heat insulating boards are several, the outer side surfaces of the heat insulating boards are propped against each other and distributed along the same direction parallel to the horizontal plane, the rear end surface of the heat insulating board is connected with the roadway wall through the connecting mechanism, the surface of the heat insulating board and the roadway wall connected with the heat insulating board form an included angle of 0-45 degrees, each 1-10 heat insulating boards form a protection group, at least one cooling protection board is arranged in the same protection group, the front end surface of the single cooling protection board is flush with the front end surface of the heat insulating board, and the front end surface area of the single cooling protection board is 0.5-1.5 times that of the cooling cavity of the single heat insulating board.

Further, the cooling guard plate is including bearing fossil fragments, elasticity otter board, stereoplasm otter board, heat exchange tube, connecting tube head, wherein bear fossil fragments for grid board structure, bear fossil fragments and pass through sliding connection between direction slide rail and the cooling chamber lateral wall, bear fossil fragments rear end face and stereoplasm otter board and be connected and coaxial distribution, bear fossil fragments front end face and be connected with elasticity otter board through a plurality of shell fragments, elasticity otter board and bear fossil fragments coaxial distribution and cladding are outside bearing fossil fragments front end face, the heat exchange tube inlays in bearing fossil fragments and is curved structure distribution around bearing fossil fragments central point, heat exchange tube both ends are connected with a connecting tube head respectively, and its input communicates with the water conservancy diversion mouth of low temperature supply tube through connecting tube head, and its output communicates with the water conservancy diversion mouth of high temperature back flow through connecting tube head.

Furthermore, the bottom of the cooling cavity and the bottom of the heat exchange cavity of the heat insulating plate are respectively provided with a heat insulating lining layer, and meanwhile, a plurality of drain outlets are uniformly distributed on the side walls of the cooling cavity, the heat exchange cavity and the bottom of the heat insulating plate.

Further, the heat conduction block comprises heat conduction fin plates, a guide frame, heat exchange blocks and adjusting springs, the guide frame is of a platy structure coaxially distributed with the heat exchange cavity, a plurality of guide grooves are uniformly distributed on the guide frame, the guide frame is embedded in the heat exchange cavity and is positioned right in front of the heat exchanger, at least one heat conduction fin plate is arranged in each guide groove, the heat conduction fin plates are embedded in the guide grooves and are in sliding connection with the guide grooves, the front end surfaces of the heat conduction fin plates are positioned outside the heat exchange cavity and abut against roadway walls, the heat conduction fin plate surfaces and the horizontal surfaces form included angles of 30-90 degrees, the heat conduction fin plates are mutually parallel to each other, the rear half parts of the heat conduction fin plates are positioned in the heat exchange cavity, a working group is formed by the heat exchange blocks, the rear end surfaces of the same working group abut against the outer surfaces of the heat exchanger, the heat exchange blocks are of a blocky structure with rectangular cross sections, the heat exchange blocks are coated on the outer surfaces of the heat exchanger through the assembly grooves, the front end surfaces of the heat exchange blocks are provided with a plurality of adjusting grooves, each adjusting groove is coaxial with one guide groove, the heat conduction fin plate surfaces are mutually parallel to each other, and the heat conduction fin plates are mutually connected with the adjusting grooves through the back half fin plates and the heat exchange fin plates through the sliding grooves.

Further, the heat conduction fin plate comprises a guide section and a heat exchange section, wherein the guide section and the heat exchange section are of plate-shaped structures with rectangular cross sections, the front section surface and the rear end surface of the heat exchange section are respectively connected with the guide section, the guide section is embedded in a guide groove and is in sliding connection with the guide groove, the heat exchange section connected with the front end surface of the guide section is located outside a heat exchange cavity and is propped against a roadway wall, the heat exchange section connected with the rear end surface of the guide section is embedded in an adjusting groove and is propped against the groove wall of the adjusting groove and is in sliding connection with the groove bottom of the adjusting groove through an adjusting spring, and the distance between the rear end surface of the heat exchange section and the groove bottom of the adjusting groove is 5% -30% of the depth of the adjusting groove.

Further, the contact surface area of the heat exchange block and the heat exchanger is not less than 50% of the surface area of the heat exchanger.

Furthermore, among the guide flow ports arranged on the low-temperature supply pipe and the high-temperature return pipe, control valves are arranged at the guide flow ports, and the guide flow ports are respectively communicated with the guide branch pipe and the flexible connecting pipe through the control valves.

The utility model discloses integrate, the modularization degree is high, and environmental adaptation ability is strong, can effectively satisfy the needs that different mine tunnel supporting operation and setting, and equipment heat exchange efficiency is high simultaneously, can effectually carry out heat recovery and cooling protection operation to the high temperature environment in the tunnel, simultaneously in operation can prevent effectively in addition that the tunnel wall is high temperature from the damage that causes the staff, effectively prevent the rock mass that the tunnel wall drops, the interference that the high temperature groundwater that overflows caused to the working environment in the tunnel to the effectual security that improves high temperature mine tunnel safety protection ability and construction.

Drawings

The present utility model will be described in detail below with reference to the attached drawings and detailed description;

FIG. 1 is a schematic diagram of the novel structure;

FIG. 2 is a schematic side view of a part of a structure of a heat insulating plate;

FIG. 3 is a schematic view of a partial structure of a heat conducting block;

fig. 4 is a schematic diagram of a partial structure of a cooling protection plate.

Detailed Description

In order to facilitate the technical means, creation characteristics, achievement of the purpose and efficacy of the present utility model, the present utility model is further described below in connection with the specific embodiments.

As shown in fig. 1-4, a mine heat damage on-site cooling protection device based on roadway walls comprises a heat conducting block 1, a heat insulating plate 2, heat exchangers 3, a low-temperature supply pipe 4, a high-temperature return pipe 5, a cooling protection plate 6 and a guide sliding rail 7, wherein a plurality of heat insulating plates 2 are in an I-shaped groove-shaped structure with cross sections, the axes of the heat insulating plates are parallel to the horizontal plane, meanwhile, the front end surface of each heat insulating plate 2 is provided with a cooling cavity 21, the rear end surface is provided with a heat exchanging cavity 22, at least one heat exchanger 3 is arranged in each heat exchanging cavity 22, the heat exchangers 3 are communicated with the low-temperature supply pipe 4 through a flow guiding branch pipe, meanwhile, each heat exchanger 3 is communicated with the high-temperature return pipe 5 through a flow guiding branch pipe, the heat exchangers 3 are mutually connected in parallel, in addition, the outer surfaces of the heat exchangers 3 are mutually offset with a plurality of heat conducting blocks 1, the rear half parts of the heat conducting blocks 1 are positioned in the heat exchanging cavity 22 and are connected with the side walls of the heat exchanging cavity 22, at the same time, the front half part of the heat conducting block 1 is positioned outside the heat exchange cavity 22 and is propped against the roadway wall, at least one low-temperature supply pipe 4 and at least one high-temperature return pipe 5 are arranged, the axes of the low-temperature supply pipe 4 and the high-temperature return pipe 5 are parallel to the plate surface of the heat insulation plate 2, wherein the low-temperature supply pipe 4 is connected with the front end surface of the heat insulation plate 2, the high-temperature return pipe 5 is connected with the rear end surface of the heat insulation plate 2, the distance between the low-temperature supply pipe 4, the high-temperature return pipe 5 and the bottoms of the cooling cavity 21 and the heat exchange cavity 22 of the heat insulation plate 2 is not more than 50 percent of the depth of the cooling cavity 21 and the heat exchange cavity 22, at least one cooling protection plate 6 is embedded in the cooling cavity 21 of the heat insulation plate 2 and is in sliding connection with the side wall of the cooling cavity 21 through a guide slide rail 7, the distribution directions of the axes of the guide slide rail 7 are parallel to each heat insulation plate 2 are propped against and communicated, the cooling protection plate 6 is further communicated with the low-temperature supply pipe 4 and the high-temperature return pipe 5 through flexible connecting pipes 8, a plurality of diversion openings 9 distributed along the axial direction of the low-temperature supply pipe 4 and the high-temperature return pipe 5 are uniformly distributed on the low-temperature supply pipe and the high-temperature return pipe 5, and the cooling protection plate is communicated with the diversion branch pipes and the flexible connecting pipes 8 through the diversion openings 9.

In this embodiment, the heat insulating boards 2 are several, the lateral surfaces between the heat insulating boards 2 are propped against each other and distributed along the same direction parallel to the horizontal plane, the rear end face of the heat insulating board 2 is connected with the roadway wall through the connecting mechanism, the surface of the heat insulating board 2 and the roadway wall connected with the heat insulating board are in an included angle of 0-45 degrees, each 1-10 heat insulating boards 2 form a protection group, at least one cooling protection board 6 is arranged in the same protection group, the front end face of a single cooling protection board 6 is flush with the front end face of the heat insulating board 2, and the front end face area of the single cooling protection board 6 is 0.5-1.5 times that of the cooling cavity 21 of the single heat insulating board 2.

Through setting up a plurality of heat insulating boards and cooperatively using, realize that the heat insulating board is according to the tunnel trend, carry out safety protection's purpose to the interior high temperature part channel wall of tunnel in step.

Further preferably, the connecting mechanism is any one or two of a screw rod and an anchor rod.

The key points are that the cooling protection plate 6 comprises a bearing keel 61, an elastic net plate 62, a hard net plate 63, heat exchange tubes 64 and connecting tubes 65, wherein the bearing keel 61 is of a grid plate structure, the bearing keel 61 is in sliding connection with the side wall of the cooling cavity 21 through a guide sliding rail 7, the rear end face of the bearing keel 61 is connected with the hard net plate 63 and is coaxially distributed, the front end face of the bearing keel 61 is connected with the elastic net plate 62 through a plurality of elastic sheets 66, the elastic net plate 62 and the bearing keel 61 are coaxially distributed and are coated outside the front end face of the bearing keel 61, the heat exchange tubes 64 are embedded in the bearing keel 61 and are distributed around the central point of the bearing keel 61 in a curve structure, two ends of each heat exchange tube 64 are respectively connected with one connecting tube 65, and the input end of each heat exchange tube is communicated with the flow guide port 9 of the low-temperature supply tube 4 through the connecting tube 65.

The bearing keels and the hard screen plates arranged on the cooling protection plates can effectively improve the overall structural strength of the cooling protection plates, so that the resistance of external force impact is effectively improved, meanwhile, the elastic deformation capacity of the surfaces of the cooling protection plates is effectively improved through the arranged elastic screen plates and the elastic sheets used for connecting the elastic screen plates, so that the external force impact is effectively absorbed, the impact injury is reduced, and meanwhile, the impact injury to workers can be reduced by utilizing the elastic deformation capacity of the elastic screen plates when the workers collide with the cooling protection plates;

the heat exchange tube that sets up simultaneously can directly introduce the cooling guard plate with the interior low temperature medium of low temperature supply tube, effectively reduces the surface temperature of cooling guard plate during operation to realize cooling to tunnel operational environment, in addition can prevent the damage that cooling guard plate surface temperature is too high and cause staff and equipment.

Further preferably, the bottoms of the cooling cavity 21 and the heat exchange cavity 22 of the heat insulating plate 2 are respectively provided with a heat insulating lining layer 23, and meanwhile, a plurality of drain outlets 24 are uniformly distributed on the side walls of the cooling cavity 21, the heat exchange cavity 22 and the bottom of the heat insulating plate 2.

The heat insulation treatment between the cooling cavity and the heat exchange cavity of the heat insulation plate can be effectively realized through the arranged heat insulation lining layer, on one hand, the geothermal heat of the roadway wall is directly collected through heat exchange through the heat exchange cavity and the heat exchanger and the heat conduction block arranged in the heat exchange cavity, and the medium after heat exchange is recovered through the high-temperature return pipe after heat exchange through the low-temperature medium in the low-temperature supply pipe, so that the geothermal resource recovery of the roadway wall is realized, the heat radiation quantity of the roadway wall to the roadway is reduced, and the roadway temperature is indirectly reduced; on the other hand, the cooling cavity and the cooling protection plate in the cooling cavity are matched with the low-temperature supply pipe, so that the cooling operation is directly carried out on the environment in the roadway, the heat damage is effectively treated by the roadway cooling, and the geothermal resource recycling is further realized.

The heat conducting block 1 specifically described, the heat conducting block 1 includes a heat conducting fin plate 101, a guide frame 102, a heat exchanging block 103, and an adjusting spring 104, the guide frame 102 is of a plate structure coaxially distributed with the heat exchanging cavity 22, a plurality of guide grooves 105 are uniformly distributed on the guide frame 102, the guide frame 102 is embedded in the heat exchanging cavity 22 and is located right in front of the heat exchanger 3, at least one heat conducting fin plate 101 is disposed in each guide groove 105, the heat conducting fin plate 101 is embedded in the guide groove 105 and is slidably connected with the guide groove 105, the front end surface of the heat conducting fin plate 101 is located outside the heat exchanging cavity 22 and abuts against the roadway wall, the plate surface of the heat conducting fin plate 101 forms an included angle of 30-90 degrees with the horizontal plane, all the heat conducting fin plates 101 are parallel to each other, the rear end surfaces of the heat conducting fin plates 101 of the same work group are all abutted against the outer surface of the heat exchanger 3 through the same heat exchanging block 103, the rear end surfaces of the heat exchanging block 103 are of a rectangular block 103, the heat exchanging block 103 is assembled with the heat exchanging block 103, the heat exchanging block 101 is connected with the outer surface of the adjusting plate 107 through the guide groove, and the heat exchanging block 101 is coated with the heat exchanging block 101, and the heat exchanging block 101 is coated with the heat-exchanging block 101, and the heat exchanger 101 is coated with the heat-exchanging block 101 is coated with the heat-heat exchanger 3.

The heat conduction fin 101 comprises a guide section 1011 and a heat exchange section 1012, wherein the guide section 1011 and the heat exchange section 1012 are both in a plate-shaped structure with rectangular cross sections, the front section surface and the rear end surface of the heat exchange section 1011 are respectively connected with the guide section 1012, the guide section 1011 is embedded in the guide groove 105 and is in sliding connection with the guide groove 105, the heat exchange section 102 connected with the front end surface of the guide section 1011 is positioned outside the heat exchange cavity 22 and is abutted against the roadway wall, the heat exchange section 1012 connected with the rear end surface of the guide section 1011 is embedded in the adjusting groove 107 and is abutted against the groove wall of the adjusting groove 107 and is in sliding connection with the groove bottom of the adjusting groove 107 through the adjusting spring 104, and the distance between the rear end surface of the heat exchange section 1012 and the groove bottom of the adjusting groove 107 is 5% -30% of the depth of the adjusting groove 107.

The heat conduction fin plates are in contact with the roadway wall to perform heat exchange; on the other hand, the isomorphic heat exchange block is connected with the heat exchanger to realize direct heat exchange of geothermal resources of the tunnel wall, thereby achieving the effect of treating heat injury while meeting the requirement of heat energy recovery; meanwhile, the distance between the rear end face of the guide fin plate and the bottom of the heat exchange block adjusting groove is adjusted by utilizing the adjusting spring, so that the extension length of each heat conducting fin plate outside the rear end face of the heat insulating plate is flexibly adjusted, the heat conducting fin plates are synchronously adjusted according to the fluctuation state of the tunnel wall, and the flexibility and the environmental universality of equipment assembly and positioning are greatly improved.

Further preferably, the contact surface area of the heat exchange block 103 and the heat exchanger 3 is not less than 50% of the surface area of the heat exchanger 3.

In this embodiment, among the diversion ports 9 provided in the low temperature supply pipe 4 and the high temperature return pipe 5, the diversion ports 9 are respectively provided with a control valve 10, and are respectively communicated with the diversion branch pipe and the flexible connection pipe 8 through the control valves 10.

The utility model discloses in concrete use, at first according to the position of high temperature section in tunnel structure and the tunnel, set up the quantity of heat insulating board, and with each heat insulating board and heat conduction piece, the heat insulating board, the heat exchanger, low temperature supply tube, high temperature back flow, cooling guard plate and direction slide rail equipment are assembled between back and the tunnel wall and are connected, then with low temperature supply tube, high temperature back flow and outside refrigeration mechanism and heat recovery system intercommunication, thereby form closed heat exchange medium circulation system, the quantity and the working position of cooling guard plate simultaneously set up according to staff's actual working section.

When the heat damage treatment is carried out, firstly pressurizing a low-temperature medium and enabling the low-temperature medium to flow along a low-temperature supply pipe, in the flowing process, directly exchanging heat between the low-temperature medium in the low-temperature supply pipe and a roadway, simultaneously conveying a part of the low-temperature medium into a heat exchanger, driving the heat exchanger to directly exchange heat between roadway walls through a heat conducting block, directly recycling geothermal resources, and simultaneously relieving the condition of heating the roadway caused by geothermal radiation into the roadway; the other part of low-temperature medium is conveyed into the heat exchange tube of the cooling protection plate, so that the cooling protection plate can directly exchange heat with and cool the roadway by using the low-temperature medium to treat the heat damage of the roadway, and meanwhile, the medium heated by the heat exchanger and the cooling protection plate through heat exchange flows back to an external heat energy recovery system through a high-temperature return tube, so that the geothermal resource recovery purpose is realized.

Meanwhile, when the cooling protection plate is in operation, the cooling protection plate can be directly fixed at a designated working position through the guide sliding rail to realize positioning work, and can also be driven by a worker to displace along the guide sliding rail, so that the cooling protection plate is always positioned at the working position of the worker, and synchronously performs cooling operation for the worker; on the other hand, the flexible connecting pipe connected with the cooling protection plate is temporarily disconnected with the current diversion port through the control valve, and the flexible connecting pipe is communicated with the peripheral diversion port after the cooling protection plate moves to the designated position.

In addition, the heat insulation board and the cooling protection board arranged in the novel structure can effectively realize cladding protection on the roadway wall, thereby preventing injury to staff and equipment in the roadway caused by falling broken stone on the roadway wall and the like; meanwhile, the broken stone falling off and overflow water body generated by the roadway wall can be effectively collected and guided through the cooling cavity and the heat exchange cavity of the heat insulation plate, and the broken stone falling off and the overflow water body are further prevented from damaging staff and equipment in the roadway.

The foregoing has outlined and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be appreciated by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of protection of this utility model is defined by the claims that follow and equivalents thereof.

Claims

1. Mine heat disaster on-site cooling protection device based on tunnel wall, its characterized in that: the mine heat damage site cooling protection device based on the tunnel wall comprises heat conducting blocks, a heat insulating plate, heat exchangers, a low-temperature supply pipe, a high-temperature return pipe, a cooling protection plate and a guide sliding rail, wherein a plurality of heat insulating plates are of an I-shaped groove-shaped structure with transverse sections, the axes of the heat insulating plates are parallel to the horizontal plane, the front end surface of each heat insulating plate is provided with a cooling cavity, the rear end surface of each heat insulating plate is provided with a heat exchanging cavity, at least one heat exchanger is arranged in each heat exchanging cavity, the heat exchangers are communicated with the low-temperature supply pipe through the flow guiding branch pipe, meanwhile, each heat exchanger is communicated with the high-temperature return pipe through the flow guiding branch pipe, the heat exchangers are mutually connected in parallel, in addition, the outer surfaces of the heat exchangers are mutually offset with a plurality of heat conducting blocks, the rear half parts of the heat conducting blocks are positioned in the heat exchanging cavity and are connected with the side walls of the heat exchanging cavity, and the front half parts of the heat conducting blocks are positioned outside the heat exchanging cavity and are mutually offset with the tunnel wall, the heat-insulating plate comprises a heat-insulating plate, a low-temperature supply pipe, a high-temperature return pipe, a flexible connecting pipe, a cooling protection plate, a heat-insulating plate, a flexible connecting pipe, a cooling protection plate and a low-temperature supply pipe, wherein the axis of the low-temperature supply pipe and the axis of the high-temperature return pipe are parallel to the surface of the heat-insulating plate, the low-temperature supply pipe is connected with the front end face of the heat-insulating plate, the distance between the low-temperature supply pipe and the cooling cavity of the heat-insulating plate and the distance between the high-temperature return pipe and the bottom of the heat-insulating plate are not more than 50% of the depth of the cooling cavity and the heat-insulating cavity, the high-temperature return pipe is positioned between the heat exchanger and the bottom of the heat-insulating cavity, at least one cooling protection plate is embedded in the cooling cavity of the heat-insulating plate and is in sliding connection with the side wall of the cooling cavity through the guiding sliding rail, the axis of the guiding sliding rail is parallel to the distribution direction of the axis of the guiding sliding rail, the guiding sliding rail is propped against and communicated with the heat-insulating plate, the cooling protection plate is communicated with the low-temperature supply pipe and the high-temperature return pipe through the flexible connecting pipe, the high-temperature return pipe is uniformly provided with a plurality of guide ports distributed along the axis direction of the high-temperature return pipe, and the guide ports are communicated with the guide branch pipe and the flexible connecting pipe.

2. The mine heat damage on-site cooling protection device based on roadway walls according to claim 1, wherein the plurality of heat insulation boards are propped against each other between the outer side faces of the plurality of heat insulation boards and distributed along the same direction parallel to a horizontal plane, the rear end face of each heat insulation board is connected with the roadway walls through a connecting mechanism, the surface of each heat insulation board forms an included angle of 0-45 degrees with the roadway walls connected with the heat insulation board, each 1-10 heat insulation boards form a protection group, at least one cooling protection board is arranged in the same protection group, the front end faces of the single cooling protection boards are distributed flush with the front end faces of the heat insulation boards, and the front end face area of the single cooling protection board is 0.5-1.5 times that of the cooling cavity of the single heat insulation board.

3. The mine heat damage on-site cooling protection device based on roadway walls according to claim 1 or 2, wherein the cooling protection plate comprises a bearing keel, an elastic net plate, a hard net plate, a heat exchange tube and a connecting tube, wherein the bearing keel is of a grid plate structure, the bearing keel is in sliding connection with the side wall of a cooling cavity through a guide sliding rail, the rear end face of the bearing keel is connected with the hard net plate and is coaxially distributed, the front end face of the bearing keel is connected with the elastic net plate through a plurality of elastic sheets, the elastic net plate is coaxially distributed with the bearing keel and is coated outside the front end face of the bearing keel, the heat exchange tube is embedded in the bearing keel and is distributed in a curve structure around the central point of the bearing keel, two ends of the heat exchange tube are respectively connected with a connecting tube head, the input end of the heat exchange tube head is communicated with a flow guide port of a low-temperature supply tube, and the output end of the heat exchange tube is communicated with a flow guide port of a high-temperature return tube through the connecting tube head.

4. The mine heat damage on-site cooling protection device based on the roadway wall of claim 1, wherein the cooling cavity of the heat insulation board and the bottom of the heat exchange cavity are respectively provided with a heat insulation lining layer, and a plurality of drain outlets are uniformly distributed on the side walls of the cooling cavity, the heat exchange cavity and the bottom of the heat insulation board.

5. The mine heat damage on-site cooling protection device based on roadway walls according to claim 1, wherein the heat conducting blocks comprise heat conducting fin plates, guide frames, heat exchanging blocks and adjusting springs, the guide frames are of plate-shaped structures which are coaxially distributed with the heat exchanging cavities, a plurality of guide grooves are uniformly distributed on the guide frames, the guide frames are embedded in the heat exchanging cavities and are positioned right in front of the heat exchangers, at least one heat conducting fin plate is arranged in each guide groove, the heat conducting fin plates are embedded in the guide grooves and are in sliding connection with the guide grooves, the front end faces of the heat conducting fin plates are positioned outside the heat exchanging cavities and are propped against the roadway walls, the heat conducting fin plate faces and the horizontal faces form included angles of 30-90 degrees, the heat conducting fin plates are mutually parallel to each other, the rear half parts of the heat conducting fin plates are positioned in the heat exchanging cavities, the rear end faces of the same working group are propped against the outer surfaces of the heat exchangers through the same heat exchanging blocks, the heat exchanging blocks are of block-shaped structures which are transversely rectangular, the rear end faces of the heat exchanging blocks are provided with assembling grooves, the heat exchanging blocks are coated on the outer surfaces of the heat exchanging blocks, the heat exchanging blocks are coaxially coated on the outer surfaces of the heat exchanging fin plates, and the heat exchanging fin plates are connected with the adjusting grooves through the adjusting grooves, and the heat conducting fin plates are mutually arranged at the positions and the adjusting grooves are mutually correspond to the adjusting fin plate surfaces.

6. The mine heat damage on-site cooling protection device based on roadway walls according to claim 5, wherein the heat conduction fin plate comprises a guide section and a heat exchange section, wherein the guide section and the heat exchange section are of plate-shaped structures with rectangular cross sections, the front section surface and the rear end surface of the heat exchange section are respectively connected with the guide section, the guide section is embedded in a guide groove and is in sliding connection with the guide groove, the heat exchange section connected with the front end surface of the guide section is positioned outside a heat exchange cavity and is propped against the roadway walls, the heat exchange section connected with the rear end surface of the guide section is embedded in an adjusting groove and is propped against and is in sliding connection with the groove wall of the adjusting groove, and meanwhile, the heat exchange section is connected with the groove bottom of the adjusting groove through an adjusting spring, and the distance between the rear end surface of the heat exchange section and the groove bottom of the adjusting groove is 5% -30% of the depth of the adjusting groove.

7. The mine heat damage site cooling protection device based on the roadway wall, as recited in claim 5, wherein the contact surface area of the heat exchange block and the heat exchanger is not less than 50% of the surface area of the heat exchanger.

8. The mine heat damage on-site cooling protection device based on roadway walls according to claim 1, wherein control valves are arranged at the positions of all the diversion ports in the diversion ports arranged on the low-temperature supply pipe and the high-temperature return pipe, and the diversion ports are respectively communicated with the diversion branch pipe and the flexible connecting pipe through the control valves.