Roadway supporting device and system and cooling method

Abstract

The invention discloses a roadway supporting device and system and a cooling method.The roadway supporting device comprises an anchor rod body, the anchor rod body is internally provided with a grouting channel, a liquid inlet channel and a liquid return channel, the grouting channel is used for allowing grout to pass so as to conduct grouting on drill holes of a roadway, and an inlet of the liquid inlet channel is used for being connected with a water source; an outlet of the liquid inlet channel communicates with an inlet of the liquid return channel, so that liquid conveyed into the liquid inlet channel flows into the liquid return channel, the peripheral wall of the liquid return channel is exposed in the environment, energy in the liquid in the liquid return channel is exchanged with energy in the environment, and an outlet of the liquid return channel is used for being connected with a user side; and the converted energy is supplied to the user side for use. Grouting anchoring can be achieved through the grouting channel, water circulation can be achieved through the liquid inlet channel and the liquid return channel, geothermal energy is absorbed and used for heating while the rock stratum is cooled, and building heating energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel support, and in particular to a tunnel support device, system and cooling method. Background Art

[0002] As the depth of coal mining increases, the farther away from the surface, the greater the impact of geothermal heat, the higher the temperature of the rock layer, and the temperature inside the mine will also increase accordingly. In addition, mining activities in the mine, such as blasting, mechanical operations, etc., will also generate heat, thereby affecting the temperature of the mine. In related technologies, ventilation is used to take away a large amount of heat in the tunnel, and only considers keeping the temperature at a relatively reasonable level, directly ignoring this part of the heat source, resulting in a huge waste of resources. In addition, in extremely cold areas, the building energy consumption in coal mine parks is high, especially the energy consumption of HVAC accounts for a very high proportion. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a multifunctional tunnel support device.

[0005] The tunnel support device of an embodiment of the present invention includes an anchor body, which has a grouting channel, a liquid inlet channel and a liquid return channel. The grouting channel is used to allow slurry to pass through to grout the drilled hole of the tunnel. The inlet of the liquid inlet channel is used to connect to a water source. The outlet of the liquid inlet channel is connected to the inlet of the liquid return channel so that the liquid transported to the liquid inlet channel flows into the liquid return channel. The peripheral wall of the liquid return channel is exposed to the environment so that the energy in the liquid in the liquid return channel can be exchanged with the energy in the environment. The outlet of the liquid return channel is used to connect to the user end so as to supply the converted energy to the user end for use.

[0006] The tunnel support device of the embodiment of the present invention can not only realize grouting anchoring through the grouting channel, but also realize water circulation through the liquid inlet and return channels. While cooling the rock formation, it absorbs geothermal energy and uses it for heating, thereby reducing the energy consumption of building heating.

[0007] In some embodiments, a flow area of ​​the liquid return channel is larger than a flow area of ​​the liquid inlet channel.

[0008] In some embodiments, the anchor rod body includes an outer cylinder, an anchor head and a grouting plug arranged at both ends of the outer cylinder, and a first inner cylinder and a second inner cylinder arranged in the outer cylinder. The inner cavity of the first inner cylinder and the flow channel in the anchor head together constitute the grouting channel, the inner cavity of the second inner cylinder is the liquid inlet channel, and the inner circumferential wall of the outer cylinder and the outer circumferential walls of the first inner cylinder and the second inner cylinder together constitute the liquid return channel.

[0009] In some embodiments, the peripheral wall of the outer cylinder has raised portions and recessed portions alternately arranged along its axial direction.

[0010] In some embodiments, the outer diameters of the first inner cylinder and the second inner cylinder are half of the inner diameter of the outer cylinder.

[0011] An embodiment of the present invention further provides a tunnel support system.

[0012] The tunnel support system of an embodiment of the present invention includes a water storage device, a heating device and a plurality of tunnel support devices described in any one of the above embodiments, wherein the water storage device is connected to the heating device, and the water storage device is used to provide hot water to the heating device and recover cold water discharged from the heating device, and the water storage device is connected to the tunnel support device so that the water storage device transports cold water through the tunnel support device and returns to the water storage device after the water is heated.

[0013] In some embodiments, the water storage device includes a hot water tank and a cold water tank, the inlet of the hot water tank is connected to the outlet of the return liquid channel of the tunnel support device via a pipeline, the outlet of the hot water tank is connected to the inlet of the heating device via a pipeline, the inlet of the cold water tank is connected to the outlet of the heating device via a pipeline, and the outlet of the cold water tank is connected to the inlet of the liquid inlet channel of the tunnel support device via a pipeline.

[0014] In some embodiments, a plurality of the tunnel support devices are spaced apart along the circumference of the tunnel.

[0015] In some embodiments, the tunnel support device and the pipelines between the hot water tank and the cold water tank are all arranged close to the peripheral wall of the tunnel.

[0016] An embodiment of the present invention further provides a tunnel support cooling method, and the tunnel cooling support method is used for the tunnel support system described in any one of the above embodiments.

[0017] The tunnel support cooling method according to the embodiment of the present invention comprises:

[0018] Inserting the tunnel support device into the drilled hole of the tunnel and connecting the grouting equipment to perform grouting operation;

[0019] After the grouting operation is completed, the tunnel support device is connected to the water storage device so that cold water flows into the tunnel support device for heat exchange, and the heated hot water flows back to the water storage device;

[0020] The water storage device transports the hot water to the heating device so that the hot water exchanges heat with the external environment, and the cooled cold water flows back to the water storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the grouting process of the tunnel support device according to an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the heat exchange process of the tunnel support device according to an embodiment of the present invention.

[0023] Figure 3 It is a cross-sectional view of a tunnel support device according to an embodiment of the present invention.

[0024] Figure 4 Schematic diagram of a tunnel support system according to an embodiment of the present invention.

[0025] Reference numerals:

[0026] 1-anchor body, 11-outer cylinder, 12-first inner cylinder, 13-second inner cylinder, 14-anchor head, 15-grouting plug, 101-grouting channel, 102-liquid inlet channel, 103-liquid return channel,

[0027] 10-tunnel support device, 20-hot water tank, 30-cold water tank, 40-heating device. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and 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 be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] The tunnel support device 10 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0030] like Figures 1 to 4 As shown, the tunnel supporting device 10 of the embodiment of the present invention comprises an anchor body 1, and the anchor body 1 has a grouting channel 101, a liquid inlet channel 102 and a liquid return channel 103.

[0031] Among them, the grouting channel 101 is used to allow slurry to pass through to grout the drilled hole in the tunnel. It should be noted that the hole is drilled at the top, side wall or bottom of the tunnel, and the diameter and depth of the hole meet the installation requirements of the anchor body 1 of the embodiment of the present invention. The anchor body 1 is inserted into the pre-drilled hole. At this time, the anchor body 1 is connected to the grouting equipment, and cement or other grouting materials are sent into the grouting channel 101 of the anchor body 1 through the grouting pipe. It is injected into the gap between the anchor body 1 and the surrounding rock through the grouting channel 101 to improve the anchoring effect and the overall stability of the tunnel.

[0032] The inlet of the liquid inlet channel 102 is used to connect to a water source, and the outlet of the liquid inlet channel 102 is connected to the inlet of the liquid return channel 103, so that the liquid transported into the liquid inlet channel 102 flows into the liquid return channel 103, and the peripheral wall of the liquid return channel 103 is exposed to the environment, so that the energy in the liquid in the liquid return channel 103 is exchanged with the energy in the environment, and the outlet of the liquid return channel 103 is used to connect to the user end, so as to supply the converted energy to the user end for use.

[0033] It can be understood that after the grouting is completed, the grouting equipment is removed and the anchor body 1 of the embodiment of the present invention is connected to the water inlet and return pipes. The water inlet pipe transports cold water to the liquid inlet channel 102 of the anchor body 1, and then flows to the liquid return channel 103 to exchange heat with the surrounding rock of the tunnel, thereby reducing the temperature of the surrounding rock, that is, absorbing geothermal energy and fundamentally reducing the temperature in the tunnel.

[0034] The water flowing to the return pipe through the return liquid channel 103 absorbs heat and heats up to become hot water. The hot water is delivered to the user end (in cold areas or in winter, in the coal mine park buildings on the ground) to provide heating for the user, thereby reducing the energy consumption of building heating.

[0035] Therefore, the tunnel support device 10 of the embodiment of the present invention has two functions: grouting anchoring and heat exchange. It can not only realize grouting anchoring through the grouting channel 101, but also realize water circulation through the liquid inlet and return channels. While cooling the rock formation, it absorbs geothermal energy and uses it for heating, thereby reducing the heating energy consumption of the building.

[0036] In some embodiments, Figures 1 to 3 As shown, the flow area of ​​the liquid return channel 103 is larger than the flow area of ​​the liquid inlet channel 102 .

[0037] It is understandable that due to the small flow area of ​​the liquid inlet channel 102, the fluid with the same flow rate will reach a higher flow rate here, increasing the shear force of the fluid, which helps the water to mix and transfer heat more effectively when it subsequently flows into the return liquid channel 103 for heat exchange, thereby improving the heat exchange efficiency.

[0038] In some embodiments, Figures 1 to 3 As shown, the bolt body 1 includes an outer cylinder 11 , a first inner cylinder 12 and a second inner cylinder 13 .

[0039] The outer cylinder 11 is provided with an anchor head 14 and a grout stopper 15 at both ends in the axial direction, respectively. The first inner cylinder 12 and the second inner cylinder 13 are arranged in the outer cylinder 11, and the central axes of the outer cylinder 11, the first inner cylinder 12 and the second inner cylinder 13 are arranged in parallel. The first inner cylinder 12 is flush with the outer cylinder 11 at both ends in the axial direction, and one end of the first inner cylinder 12 close to the anchor head 14 is connected to the flow channel in the anchor head 14, so that the flow channels in the first inner cylinder 12 and the anchor head 14 together constitute a grouting channel 101.

[0040] like Figure 1 As shown, the slurry enters from the port of the first inner cylinder 12 close to the stop plug 15, flows to the port close to the anchor head 14, flows into the anchor head 14, and flows back to the gap between the anchor body 1 and the rock formation through the grouting port reserved on the anchor head 14. It should be noted that the size of the outer cylinder 11 is slightly smaller than the size of the drilled hole, and the stop plug 15 blocks the drilled hole to prevent the injected slurry from flowing out. When the grouting pressure reaches the preset value, stop grouting.

[0041] One end of the second inner cylinder 13 close to the stopper 15 is flush with the end of the outer cylinder 11, and the second inner cylinder 13 is shorter than the outer cylinder 11, so that the port of the second inner cylinder 13 close to the anchor head 14 is connected to the inner cavity of the outer cylinder 11. The inner cavity of the second inner cylinder 13 is a liquid inlet channel 102, and the inner peripheral wall of the outer cylinder 11 and the outer peripheral walls of the first inner cylinder 12 and the second inner cylinder 13 together constitute a liquid return channel 103.

[0042] like Figure 2 As shown, the inlet of the liquid inlet channel 102 is connected to the water inlet pipeline to deliver cold water into the liquid inlet channel 102. Then, the cold water flows into the liquid return channel 103, and performs indirect heat exchange with the surrounding rock in the liquid return channel 103, so that the surrounding rock is cooled and the water is heated. The outlet of the liquid return channel 103 is connected to the water return pipeline to deliver the heated hot water to the user end for heating.

[0043] In some embodiments, Figure 1 and Figure 2 As shown, the peripheral wall of the outer cylinder 11 has raised portions and recessed portions alternately arranged along its axial direction.

[0044] It can be understood that the peripheral wall of the outer cylinder 11 is in a concave-convex wave shape, so that the grouting function allows the slurry to more fully fill the gap between the anchor body 1 and the surrounding rock, thereby improving the friction and adhesion between the anchor body 1 and the surrounding rock, and enhancing the anchoring effect and bearing capacity. In terms of heat exchange function, the heat exchange area between the water in the return liquid channel 103 and the surrounding rock is increased, thereby improving the heat exchange efficiency and effect.

[0045] In some embodiments, Figure 3 As shown, the outer diameters of the first inner cylinder 12 and the second inner cylinder 13 are both half of the inner diameter of the outer cylinder 11 .

[0046] Optionally, the inner and outer diameters of the first inner cylinder 12 and the second inner cylinder 13 are the same, so that the first inner cylinder 12 and the second inner cylinder 13 are more convenient in processing. The outer peripheral walls of the first inner cylinder 12 and the second inner cylinder 13 are welded, and then the two can be installed together in the outer cylinder 11 to improve the convenience of processing.

[0047] The tunnel support system according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0048] like Figure 4 As shown, the tunnel support system of the embodiment of the present invention includes: a water storage device, a heating device 40 and a plurality of tunnel support devices 10 in any one of the above embodiments.

[0049] The water storage device is connected to the heating device 40, and is used to provide hot water to the heating device 40 and recover cold water discharged from the heating device 40. The water storage device is connected to the tunnel support device 10, so that the water storage device transports cold water through the tunnel support device 10 and returns to the water storage device after heating.

[0050] Optionally, the heating device 40 is a tubular heating device such as floor heating in a building. Hot water is fed into the inlet of the heating device 40 to heat the building, and is then fed out from the outlet of the heating device 40 after heat dissipation and cooling.

[0051] It can be understood that the water storage device provides cold water to the tunnel support device 10 to cool the surrounding rock, while absorbing heat to heat it up, and the heated water flows back to the water storage device to be provided to the heating device 40. Thus, the water storage device, the heating device 40 and the tunnel support device 10 form a circulation loop, which not only plays a role in reducing the temperature in the tunnel, but also plays a role in heating the building, reducing energy consumption, and having high economic value.

[0052] In some embodiments, Figure 4 As shown, the water storage device includes a hot water tank 20 and a cold water tank 30 .

[0053] The inlet of the hot water tank 20 is connected to the outlet of the liquid return channel 103 of the tunnel support device 10 through a pipeline, and the outlet of the hot water tank 20 is connected to the inlet of the heating device 40 through a pipeline. The inlet of the cold water tank 30 is connected to the outlet of the heating device 40 through a pipeline, and the outlet of the cold water tank 30 is connected to the inlet of the liquid inlet channel 102 of the tunnel support device 10 through a pipeline.

[0054] It is understandable that the hot water tank 20 acts as a buffer to balance the fluctuation between the amount of hot water supplied and the actual needs of the user. When the amount of hot water output by the tunnel support device 10 is greater than the immediate needs of the user, the hot water can be stored in the hot water tank 20 and released when the user's demand increases, ensuring that the user obtains a constant temperature. The hot water is stored in the hot water tank 20, and the tank body is insulated to reduce heat loss stored in the pipeline and improve thermal efficiency. Similarly, the cold water tank 30 also acts as a buffer to adjust the amount of cold water delivered to the tunnel support device 10 according to the actual working conditions.

[0055] Therefore, the indirect transportation method through the hot water tank 20 and the cold water tank 30 can show better economic benefits, safety and convenience in practical applications.

[0056] In some embodiments, Figure 4 As shown, multiple tunnel support devices 10 are distributed at intervals along the circumference of the tunnel, and anchor rods are evenly arranged on the peripheral wall of the tunnel, effectively improving the overall stability of the tunnel surrounding rock. In addition, the heat in the surrounding rock is absorbed in multiple directions, further improving the cooling effect of the tunnel.

[0057] Alternatively, if Figure 4 As shown, the pipelines between the tunnel support device 10 and the hot water tank 20 and the cold water tank 30 are all arranged close to the peripheral wall of the tunnel, thereby reducing the impact of the pipelines on coal mining equipment and personnel passage.

[0058] The tunnel support cooling method according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0059] The tunnel support cooling method of the embodiment of the present invention is used for the tunnel support system in any of the above embodiments. The tunnel support cooling method of the embodiment of the present invention includes:

[0060] like Figure 1 As shown, the tunnel support device 10 is inserted into the drilled hole of the tunnel and connected to the grouting equipment to perform grouting operations.

[0061] After the grouting operation is completed, Figure 2 and Figure 4 As shown, the tunnel support device 10 is connected to the water storage device so that cold water flows into the tunnel support device 10 for heat exchange, and the heated hot water flows back to the water storage device. The water storage device transports the hot water to the heating device 40 so that the hot water exchanges heat with the external environment, and the cooled cold water flows back to the water storage device. Thus, a circulating water loop is formed.

[0062] In summary, the tunnel support cooling method of the embodiment of the present invention first performs grouting and anchoring operations through the grouting channel 101 of the anchor body 1 to ensure the supporting effect of the anchor body 1 on the tunnel. Then, the water and the surrounding rock are heat exchanged through the inlet and return channels of the anchor body 1, which reduces the tunnel temperature and provides heating for the ground buildings, reduces energy consumption, and improves economic value.

[0063] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A tunnel support device, characterized in that: The invention comprises an anchor rod body, wherein the anchor rod body is provided with a grouting channel, a liquid inlet channel and a liquid return channel. The grouting channel is used to allow slurry to pass through so as to grout the borehole of the tunnel. The inlet of the liquid inlet channel is used to connect to a water source. The outlet of the liquid inlet channel is connected to the inlet of the liquid return channel so that the liquid transported into the liquid inlet channel flows into the liquid return channel. The peripheral wall of the liquid return channel is exposed to the environment so that the energy in the liquid in the liquid return channel can be exchanged with the energy in the environment. The outlet of the liquid return channel is used to connect to a user end so as to supply the converted energy to the user end for use.

2. The tunnel support device according to claim 1, characterized in that: The flow area of ​​the liquid return channel is larger than the flow area of ​​the liquid inlet channel.

3. The tunnel support device according to claim 1, characterized in that: The anchor rod body includes an outer cylinder, anchor heads and grouting plugs arranged at both ends of the outer cylinder, and a first inner cylinder and a second inner cylinder arranged in the outer cylinder. The inner cavity of the first inner cylinder and the flow channel in the anchor head together constitute the grouting channel, the inner cavity of the second inner cylinder is the liquid inlet channel, and the inner circumferential wall of the outer cylinder and the outer circumferential walls of the first inner cylinder and the second inner cylinder together constitute the liquid return channel.

4. The tunnel support device according to claim 3, characterized in that: The peripheral wall of the outer cylinder is provided with convex parts and concave parts which are alternately arranged along the axial direction thereof.

5. The tunnel support device according to claim 3, characterized in that: The outer diameters of the first inner cylinder and the second inner cylinder are half of the inner diameter of the outer cylinder.

6. A tunnel support system, characterized in that: It comprises a water storage device, a heating device and a plurality of tunnel support devices according to any one of claims 1 to 5, wherein the water storage device is connected to the heating device, the water storage device is used to provide hot water to the heating device and recover cold water discharged from the heating device, and the water storage device is connected to the tunnel support device so that the water storage device transports cold water through the tunnel support device and returns to the water storage device after the water is heated.

7. The tunnel support system according to claim 6, characterized in that: The water storage device includes a hot water tank and a cold water tank, the inlet of the hot water tank is connected to the outlet of the return liquid channel of the tunnel support device through a pipeline, the outlet of the hot water tank is connected to the inlet of the heating device through a pipeline, the inlet of the cold water tank is connected to the outlet of the heating device through a pipeline, and the outlet of the cold water tank is connected to the inlet of the liquid inlet channel of the tunnel support device through a pipeline.

8. The tunnel support system according to claim 6, characterized in that: The plurality of tunnel support devices are distributed at intervals along the circumference of the tunnel.

9. The tunnel support system according to claim 7, characterized in that: The tunnel support device and the pipelines between the hot water tank and the cold water tank are all arranged close to the peripheral wall of the tunnel.

10. A tunnel support cooling method, characterized in that: The tunnel support cooling method is used for the tunnel support system according to any one of claims 7 to 9, and the tunnel support cooling method comprises: Inserting the tunnel support device into the drilled hole of the tunnel and connecting the grouting equipment to perform grouting operation; After the grouting operation is completed, the tunnel support device is connected to the water storage device so that cold water flows into the tunnel support device for heat exchange, and the heated hot water flows back to the water storage device; The water storage device transports the hot water to the heating device so that the hot water exchanges heat with the external environment, and the cooled cold water flows back to the water storage device.

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