Hot water geothermal type roadway cooling device

Abstract

The utility model provides a hot water geothermal type roadway cooling device. According to the device, roadway surrounding rock is firstly subjected to guniting reinforcement, the roadway stability is improved, surface cracks are blocked, and the hot water inflow is reduced; secondly, injecting water containing a proppant into the fault fissure zone by means of an emulsion pump unit, and extending and penetrating micro-fractures in the fault fissure zone; and finally, alternately arranging the drill holes into water injection holes and water drainage holes, injecting high-pressure cold water into the rock stratum, neutralizing and cooling hot water in rock stratum cracks, pressing the hot water to the water drainage holes, and draining the hot water to a middle-section water sump through a water drainage pipe, so that the influence of the hot water on the temperature and humidity of the roadway is reduced, and the purpose of cooling is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rock layer cooling in metal mines, in particular to a hot water geothermal type tunnel cooling device. Background Art

[0002] As the depth of metal mines continues to increase, the temperature of rock water in deep rock strata gradually increases, reaching 50°C to 70°C. When faults or large fissure zones are encountered during mining production, underground hot water rises along the fault fissure zones and gushes to the working face through the fissures in the tunnel or surrounding rock of the mining area, causing the air temperature and humidity of the working face to rise, seriously affecting the safe and efficient production of mines. At present, most mines use grouting to seal fault fissure zones to reduce the upwelling of deep circulating underground hot water, but due to the large range of fault zones, complex fissure development, and excessive water pressure, the sealing effect is not good and the thermal environment improvement is not obvious.

[0003] In view of this, it is necessary to design a hot water geothermal tunnel cooling device to solve the above problems. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a hot water geothermal tunnel cooling device, which cools the fault fracture zone by the method of "injecting cold water-discharging hot water".

[0005] To achieve the above-mentioned purpose, the utility model provides a hot water geothermal tunnel cooling device, comprising: a shotcrete material arranged at the tunnel surrounding rock, a plurality of boreholes drilled along the advancing direction of the tunnel working face, a drainage pipe connected to the borehole at one end, a high-pressure water injection pipe connected to the borehole at one end, an emulsion pump unit connected to the other end of the high-pressure water injection pipe, and a refrigeration unit connected to the other end of the emulsion pump unit; the plurality of boreholes include water injection holes and drainage holes; the water injection holes and the drainage holes are arranged alternately; the water injection holes are connected to the high-pressure water injection pipe; the drainage holes are connected to the drainage pipe; wherein, the emulsion pump unit injects water added with proppant into the borehole; the emulsion pump unit injects cold water produced by the refrigeration unit into the water injection hole; the high-pressure cold water in the water injection hole presses the hot water in the fault fracture zone to the drainage hole; and the hot water geothermal tunnel is cooled by "injecting cold water-draining hot water" into the borehole.

[0006] Furthermore, the other end of the refrigeration unit is connected to the middle water tank.

[0007] Furthermore, the middle water tank is connected to the refrigeration unit via a water supply pipe.

[0008] Furthermore, a filter is provided on the water supply pipe.

[0009] Furthermore, the refrigeration unit and the emulsion pump unit are connected via a second water supply pipe.

[0010] Furthermore, the thickness of the shotcrete material is not less than 10 cm.

[0011] Furthermore, the other end of the drainage pipe is connected to the middle water tank.

[0012] Furthermore, the extension direction of the borehole is perpendicular to the joint angle in the fault fracture zone.

[0013] Furthermore, the drainage pipe and the high-pressure water injection pipe are both located between the shotcrete material and the tunnel.

[0014] Furthermore, the hot water geothermal tunnel cooling device also includes: a plugger arranged at the orifice of the drill hole.

[0015] The beneficial effects of the utility model are:

[0016] The hot water geothermal tunnel cooling device provided by the utility model first performs grouting reinforcement on the tunnel surrounding rock to improve the tunnel stability, seal the surface cracks and reduce the amount of hot water inflow; secondly, water containing proppant is injected into the fault fracture zone by means of an emulsion pump unit to expand and penetrate the micro-cracks in the fault fracture zone; finally, the boreholes are alternately arranged as injection holes and drainage holes, high-pressure cold water is injected into the rock formation, the hot water in the rock formation cracks is neutralized and cooled, the hot water is pressed to the drainage hole, and the hot water is discharged to the middle water tank by a drainage pipe, thus reducing the influence of hot water on the temperature and humidity of the tunnel and achieving the purpose of cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a hot water geothermal tunnel cooling device provided by the utility model;

[0018] Figure 2 A schematic diagram of the cooling principle of the hot water geothermal tunnel cooling device provided by the utility model during use;

[0019] Figure 3 The utility model provides a flow chart of the method of using the hot water geothermal tunnel cooling device.

[0020] Reference numerals

[0021] 1-tunnel; 2-fault fissure zone; 3-tunnel surrounding rock; 31-grouting material; 4-drilling hole; 41-water injection hole; 42-drainage hole; 5-emulsion pump unit; 6-high-pressure water injection pipe; 7-plug; 8-drainage pipe; 9-middle water tank; 10-water supply pipe 1; 11-filter; 12-refrigeration unit. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the drawings, while other details that are not closely related to the present invention are omitted. In addition, it should also be noted that the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] like Figure 1 As shown, the utility model provides a hot water geothermal type tunnel 1 cooling device, comprising: a shotcrete material 31 arranged at the tunnel surrounding rock 3, a plurality of boreholes 4 drilled along the advancing direction of the working face of the tunnel 1, a drainage pipe 8 connected to the borehole 4 at one end, a high-pressure water injection pipe 6 connected to the borehole 4 at one end, an emulsion pump unit 5 connected to the other end of the high-pressure water injection pipe 6, a refrigeration unit 12 connected to the other end of the emulsion pump unit 5, and a plugger 7 arranged at the orifice of the borehole 4; the plurality of boreholes 4 include a water injection hole 41 and a drainage hole 42; the water injection hole 41 and the drainage hole 42 are connected to each other. The water injection hole 41 is arranged alternately (the water injection hole 41 is located between the water drainage holes 42, and the water drainage holes 42 are located between the water injection holes 41); the water injection hole 41 is connected to the high-pressure water injection pipe 6; the water drainage hole 42 is connected to the water drainage pipe 8; wherein, the emulsion pump unit 5 injects water with proppant added into the borehole 4; the emulsion pump unit 5 injects cold water produced by the refrigeration unit 12 into the water injection hole 41; the high-pressure cold water in the water injection hole 41 presses the hot water in the fault fracture zone 2 to the water drainage hole 42; by "injecting cold water-draining hot water" into the borehole 4, the hot water geothermal tunnel is cooled. The other end of the refrigeration unit 12 is connected to the middle water tank 9; the middle water tank 9 is connected to the refrigeration unit 12 through a water supply pipe 10. A filter 11 is provided on the water supply pipe 10. The refrigeration unit 12 is connected to the emulsion pump unit 5 through a water supply pipe 2. The thickness of the shotcrete material 31 is not less than 10 cm. The other end of the drainage pipe 8 is connected to the middle water tank 9. The extension direction of the borehole 4 is perpendicular to the joint angle in the fault fracture zone 2. The drainage pipe 8 and the high-pressure water injection pipe 6 are both located between the shotcrete material 31 and the tunnel 1.

[0025] With such arrangement, firstly, the tunnel surrounding rock 3 is reinforced by spraying to improve the stability of the tunnel 1, seal the surface cracks, and reduce the amount of hot water inflow; secondly, water containing proppant is injected into the fault fracture zone 2 with the help of the emulsion pump unit 5 to expand and penetrate the micro-cracks in the fault fracture zone 2; finally, the boreholes 4 are alternately arranged as water injection holes 41 and drainage holes 42, and high-pressure cold water is injected into the rock formation to neutralize and cool the hot water in the rock formation cracks, and the hot water is pressed to the drainage hole 42, and the hot water is discharged to the middle water tank 9 by the drainage pipe 8, thereby reducing the influence of hot water on the temperature and humidity of the tunnel 1 and achieving the purpose of cooling.

[0026] The hot water geothermal tunnel cooling device provided by the utility model is specifically described below in conjunction with the embodiments.

[0027] Example

[0028] like Figures 1-2 As shown, this embodiment provides a hot water geothermal tunnel cooling device, including: a shotcrete material 31 arranged at the tunnel surrounding rock 3, a plurality of boreholes 4 drilled along the advancing direction of the working face of the tunnel 1, a drainage pipe 8 connected to the borehole 4 at one end, a high-pressure water injection pipe 6 connected to the borehole 4 at one end, an emulsion pump unit 5 connected to the other end of the high-pressure water injection pipe 6, a refrigeration unit 12 connected to the other end of the emulsion pump unit 5, and a plugger 7 arranged at the orifice of the borehole 4; the plurality of boreholes 4 include water injection holes 41 and drainage holes 42; the water injection holes 41 and the drainage holes 42 are alternately connected. Arrangement (the injection hole 41 is located between the drainage holes 42, and the drainage hole 42 is located between the injection holes 41); the injection hole 41 is connected to the high-pressure injection pipe 6; the drainage hole 42 is connected to the drainage pipe 8; wherein, the emulsion pump unit 5 injects water with proppant added into the borehole 4; the emulsion pump unit 5 injects cold water produced by the refrigeration unit 12 into the injection hole 41; the high-pressure cold water in the injection hole 41 presses the hot water in the fault fracture zone 2 to the drainage hole 42; by "injecting cold water-draining hot water" into the borehole 4, the hot water geothermal tunnel is cooled. The other end of the refrigeration unit 12 is connected to the middle water tank 9; the middle water tank 9 is connected to the refrigeration unit 12 through a water supply pipe 10. A filter 11 is provided on the water supply pipe 10. The refrigeration unit 12 is connected to the emulsion pump unit 5 through a water supply pipe 2. The thickness of the shotcrete material 31 is not less than 10 cm. The other end of the drainage pipe 8 is connected to the middle water tank 9. The extension direction of the borehole 4 is perpendicular to the joint angle in the fault fracture zone 2. The drainage pipe 8 and the high-pressure water injection pipe 6 are both located between the shotcrete material 31 and the tunnel 1.

[0029] The following is a description of the working process of a hot water geothermal tunnel cooling device provided by the utility model:

[0030] like Figures 1 to 3 As shown, S1, shotcrete reinforcement: the tunnel surrounding rock 3 is shotcrete, and the thickness of the shotcrete is not less than 10cm; S2, construction drilling: in the fault fracture zone 2 area, a number of boreholes 4 are distributed and arranged along the advancing direction of the working face of the tunnel 1, and the angle of the borehole 4 is perpendicular to the joint angle. The spacing and length of the borehole 4 are determined according to the occurrence conditions of the fault fracture zone 2; S3, hydraulic fracturing: after filtering the water in the middle water tank 9, the emulsion pump unit 5 is used to inject water into the fault fracture zone 2 through the borehole 4, wherein quartz sand is added as a proppant; when the pumping pressure is stable, it means that the fault microcracks have been expanded and connected, that is, the hydraulic fracturing work is completed, and the entire The orifice of the process borehole 4 is filled with a plugger 7; S4, arranging water injection holes 41 and drainage holes 42: the boreholes 4 are alternately arranged as water injection holes 41 and drainage holes 42, the water injection holes 41 are connected to the emulsion pump unit 5 through a high-pressure water injection pipe 6, wherein the orifice of the drainage hole 42 has no plugger 7, the orifice of the water injection hole 41 has a plugger 7, and the orifice of the drainage hole 42 is connected to the drainage pipe 8; S5, water injection for cooling: the emulsion pump unit 5 injects the cold water produced by the refrigeration unit 12 into the water injection hole 41, and the high-pressure cold water of the water injection hole 41 presses the hot water in the fault fracture zone 2 to the drainage hole 42, and discharges it to the middle water tank 9 through the drainage pipe 8.

[0031] In summary, the utility model provides a hot water geothermal tunnel cooling device, which first sprays the tunnel surrounding rock to improve the tunnel stability, seal the surface cracks, and reduce the amount of hot water inflow; secondly, with the help of an emulsion pump unit, water containing a proppant is injected into the fault fracture zone to expand and penetrate the micro-cracks in the fault fracture zone; finally, the drill holes are alternately arranged as injection holes and drainage holes, and high-pressure cold water is injected into the rock formation to neutralize and cool the hot water in the rock formation cracks, and the hot water is pressed to the drainage hole, and the hot water is discharged to the middle water tank by a drainage pipe, thereby reducing the influence of hot water on the temperature and humidity of the tunnel and achieving the purpose of cooling.

[0032] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A hot water geothermal tunnel cooling device, characterized in that: include: Shotcrete material arranged at the surrounding rock of the tunnel, several boreholes drilled along the advancing direction of the working face of the tunnel, a drainage pipe connected to the borehole at one end, a high-pressure water injection pipe connected to the borehole at one end, an emulsion pump unit connected to the other end of the high-pressure water injection pipe, and a refrigeration unit connected to the other end of the emulsion pump unit; several of the boreholes include water injection holes and drainage holes; the water injection holes and the drainage holes are arranged alternately; the water injection holes are connected to the high-pressure water injection pipe; the drainage holes are connected to the drainage pipe; wherein, the emulsion pump unit injects water added with proppant into the borehole; the emulsion pump unit injects cold water produced by the refrigeration unit into the water injection hole; the high-pressure cold water in the water injection hole presses the hot water in the fault fracture zone to the drainage hole; and the hot water geothermal tunnel is cooled by "injecting cold water-draining hot water" into the borehole.

2. The hot water geothermal tunnel cooling device according to claim 1 is characterized in that: The other end of the refrigeration unit is connected to the middle water tank.

3. The hot water geothermal tunnel cooling device according to claim 2 is characterized in that: The middle water tank is connected to the refrigeration unit through a water supply pipe.

4. The hot water geothermal tunnel cooling device according to claim 3 is characterized in that: A filter is arranged on the water supply pipe.

5. The hot water geothermal tunnel cooling device according to claim 1 is characterized in that: The refrigeration unit is connected to the emulsion pump unit through a second water supply pipe.

6. The hot water geothermal tunnel cooling device according to claim 1, characterized in that: The thickness of the shotcrete material is not less than 10 cm.

7. The hot water geothermal tunnel cooling device according to claim 2 is characterized in that: The other end of the drainage pipe is connected to the middle water tank.

8. The hot water geothermal tunnel cooling device according to claim 1 is characterized in that: The extension direction of the borehole is perpendicular to the joint angle in the fault fracture zone.

9. The hot water geothermal tunnel cooling device according to claim 2, characterized in that: The drainage pipe and the high-pressure water injection pipe are both located between the shotcrete material and the tunnel.

10. The hot water geothermal tunnel cooling device according to claim 1, characterized in that: Also includes: An occluder is disposed at the orifice of the drilled hole.

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