CN108894812B - Underground tunneling roadway cooling and dehumidifying system for high-temperature and high-humidity mine - Google Patents
Underground tunneling roadway cooling and dehumidifying system for high-temperature and high-humidity mine Download PDFInfo
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- CN108894812B CN108894812B CN201810870163.3A CN201810870163A CN108894812B CN 108894812 B CN108894812 B CN 108894812B CN 201810870163 A CN201810870163 A CN 201810870163A CN 108894812 B CN108894812 B CN 108894812B
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- 238000001816 cooling Methods 0.000 title claims abstract description 21
- 230000005641 tunneling Effects 0.000 title claims abstract description 13
- 238000009412 basement excavation Methods 0.000 claims abstract description 53
- 238000007791 dehumidification Methods 0.000 claims abstract description 24
- 238000002955 isolation Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 35
- 238000009413 insulation Methods 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims 2
- 230000009467 reduction Effects 0.000 abstract description 14
- 239000003570 air Substances 0.000 description 147
- 239000000463 material Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 229910000975 Carbon steel Inorganic materials 0.000 description 5
- 239000010962 carbon steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
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- 241000221535 Pucciniales Species 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F3/00—Cooling or drying of air
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
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Abstract
The embodiment of the invention provides a temperature reduction and dehumidification system for an underground excavation roadway of a high-temperature high-humidity mine, wherein the underground excavation roadway is provided with an excavation working face, and the temperature reduction and dehumidification system comprises: the isolation body is of a cylindrical structure and is accommodated in the underground excavation roadway; an inner roadway is formed on the inner side of the cylindrical structure, and an outer roadway is formed on the outer side of the cylindrical structure and the tunneling roadway; the air supply unit can provide low-temperature and low-humidity fresh air flow and can be respectively communicated with the inner roadway and the outer roadway; and a return airway which is respectively communicated with the inner airway and the outer airway so as to discharge wind out of the underground excavation airway. According to the invention, the underground excavation roadway behind the excavation working face is divided into the outer roadway and the inner roadway by additionally arranging the isolation body, and the operation environment of the underground excavation roadway is effectively improved by respectively carrying out cooling and dehumidifying operations on the outer roadway and the inner roadway.
Description
Technical Field
The invention relates to the technical field of heat and humidity damage treatment of high-temperature and high-humidity mines, in particular to a temperature reduction and dehumidification system for an underground tunneling roadway of a high-temperature and high-humidity mine.
Background
As the mining depth of the mine increases, the temperature of the rock formation of the mine increases. Particularly in a high-temperature high-humidity mining layer, the continuous high-temperature high-humidity working environment has great influence on operators and related equipment, so that the working efficiency is influenced, and the underground accident rate is increased.
At present, in order to improve the underground operation environment, a mechanical refrigeration surface air cooler cooling and dehumidifying method is generally adopted, and the method mainly comprises the steps of installing a steam compression type refrigeration unit on an underground or aboveground centralized area, absorbing cold energy from a high-temperature heat source, generating cold air at about 18 ℃ through the surface air cooler, and sending the cold air to a working surface for refrigeration. Since the surface temperature of the surface air cooler is usually above 5 ℃, the cooling and dehumidifying effects are poor, and the surface air cooler needs to have a sufficiently large area. Moreover, the conventional cooling method has the problem of high energy consumption due to the whole working area. Therefore, the cooling and dehumidifying effects at present need to be further improved.
Accordingly, there is a need in the art for a new temperature reduction and dehumidification system for a downhole driving roadway to solve the above problems.
Disclosure of Invention
In view of the above, the invention provides a temperature reduction and dehumidification system for an underground excavation roadway of a high-temperature and high-humidity mine, aiming at effectively realizing temperature reduction and dehumidification of a working environment with activities of operating personnel in the underground excavation roadway on the basis of reducing energy consumption.
In order to solve the problems, the invention provides a temperature reduction and dehumidification system for an underground excavation roadway of a high-temperature high-humidity mine, wherein the underground excavation roadway is provided with an excavation working face, and the temperature reduction and dehumidification system is characterized by comprising: 1) the isolation body is of a cylindrical structure and is accommodated in the underground excavation roadway; an inner roadway is formed on the inner side of the cylindrical structure, and an outer roadway is formed on the outer side of the cylindrical structure and the tunneling roadway; 2) the air supply unit can provide low-temperature and low-humidity fresh air flow and can be respectively communicated with the inner roadway and the outer roadway; and 3) a return airway respectively communicating with the inner and outer airways for exhausting air from the underground excavation roadway.
The underground excavation roadway behind the excavation working face is divided into an outer roadway and an inner roadway through the isolating bodies, the air supply unit respectively sends low-temperature and low-humidity fresh air flow into the outer roadway and the inner roadway and mixes the fresh air flow with high-temperature and high-humidity air in the outer roadway and the inner roadway, and the fresh air flow is communicated with outside air through the return airway, so that the cooling and dehumidification of the part, where operating personnel stay, in the underground excavation roadway are effectively realized.
It can be understood that according to the distribution of the number of operators and the distribution of the operation directions, the load of the air supply unit can be reduced by adjusting the air volume and the direction of the low-temperature and low-humidity fresh air flow sent into the outer roadway and the inner roadway by the air supply unit. Such as may be: the people who is in rest state at present stops in the tunnel, and current operation personnel need be close to the regional activity of tunnelling working face in outer tunnel, only need cool down the dehumidification operation so that two regions can keep comfortable temperature and humidity through tunnel and this regional operation in the air supply unit this moment. It will be appreciated that the temperature and humidity levels of the inner roadway and the localized area may be about the same or may differ.
In addition, can also further carry out the regionalism to the internal lane, if divide into article and place region and personnel rest area, can carry out nimble adjustment to the temperature and the humidity level in two regions, if need carry out cooling dehumidification in order to keep comparatively comfortable temperature and humidity to personnel rest area, and place the region to article and only do dehumidification processing in order to prevent that the instrument from being damaged in humid environment, if metal tool rusts etc.. Obviously, the division of the areas and the processing of each area by the blowing unit are only exemplary descriptions, and do not unnecessarily limit the present invention. Without departing from the principle of the invention, the division form of the zones and the cooling and dehumidifying levels of each zone can be reasonably adjusted by the technical personnel in the field so as to adapt to the specific scene of the underground tunneling roadway.
For the temperature reduction and dehumidification system for the underground excavation roadway, in one possible embodiment, the tubular structure is provided with a first wall body at the end part close to the excavation working face, the outer roadway comprises an annular part formed by the tubular structure and the side wall of the excavation roadway and a columnar part formed by the first wall body and the excavation working face, and the air supply unit comprises an air supply tube which axially penetrates through the inner roadway and is communicated with the inner roadway; and a downstream end of the blower tube in the blowing direction communicates with the columnar portion.
Because only the local area that is close to the driving face in the outer tunnel, the column part has the operation personnel promptly, consequently only to this part cool down the dehumidification and can guarantee outer tunnel operation personnel's travelling comfort, and the volume of the low humidity new trend of low temperature that air supply unit need provide has been saved to such mode of setting, has reduced the energy consumption that air supply unit is used for producing low humidity new trend of low temperature. Through the setting of cyclic annular part, can be when local area's air quality (temperature and humidity level) improves through air supply unit, lead to the return airway and then flow the outside air through cyclic annular part, promoted the circulation of air, further guaranteed that the air of column part can reach comparatively comfortable temperature and humidity level.
For the temperature reduction and dehumidification system for the underground excavation roadway, in a possible implementation manner, the air supply barrel comprises a first part accommodated in the inner roadway, a communication hole group is arranged on the first part along the axial direction of the air supply barrel, and the air supply barrel is communicated with the inner roadway through the communication hole group.
Through a longer air supply cylinder, in the process that low-temperature and low-humidity fresh air flows to the columnar part along the axial direction of the air supply cylinder, a part of low-temperature and low-humidity fresh air flow can be sent to the inner tunnel through the communicating hole group of the cylinder wall, so that the low-temperature and low-humidity fresh air flow is sent to the inner tunnel and the columnar part. Simple structure, design benefit, the air supply section of thick bamboo sets up the position on leaning on in the tunnel usually in addition, consequently can not take place to interfere to people and thing in the tunnel.
Therefore, on the one hand, the low-temperature and low-humidity fresh air flow sent out by the air supply unit flows through the inner tunnel, part of the fresh air flow enters the inner tunnel through the communicating hole group and is mixed with the damp and hot air in the inner tunnel, the mixed air is cooled and dehumidified to a certain extent, and the inner tunnel is communicated with the return airway, so that part of the cooled and dehumidified air in the inner tunnel is introduced into the return airway to ensure the circulation of the air. On the other hand, in the process that the other part of the fresh air which is sent out by the air supply unit and does not enter the inner roadway through the communicating hole group enters the columnar part, the pipe wall of the air supply cylinder can exchange heat with the air in the inner roadway, so the fresh air can be heated by the damp and hot air in the inner roadway in a small amplitude, but the low-temperature and low-humidity air flow is still kept at the low-temperature and low-humidity level after being heated in a small amplitude, so the high-temperature and high-humidity air in the columnar part can still obtain the effects of cooling and dehumidifying after being mixed with the high-temperature and high-humidity air, the heat exchange force is smaller than that in the inner roadway, and the temperature of the columnar part can be slightly higher than. Because the outer roadway is communicated with the return airway, a part of the air cooled and dehumidified in the columnar part of the inner roadway is introduced into the return airway through the annular part so as to ensure the circulation of the air.
For the temperature reduction and dehumidification system for the underground excavation roadway, in a possible implementation mode, the communication hole group comprises at least one communication hole unit distributed in the axial direction of the air supply barrel, and the communication hole unit comprises at least one communication hole distributed in the circumferential direction of the air supply barrel.
Through axial multiple spot air supply, can make interior wind tunnel obtain more even low temperature low humid fresh air current in length direction, through the multiple spot air supply of circumference, can make low temperature low humid fresh air current can spread to interior wind tunnel better. It is to be understood that the respective communication hole units may be uniformly or non-uniformly distributed in the axial direction, and may be the same or different (e.g., the number of the communication holes, etc.) between the respective communication hole units. The communication holes in the communication hole unit can be uniformly or non-uniformly distributed along the circumferential direction, and the specifications of the communication holes can be the same or different, for example, the communication holes can be round holes, square holes or strip-shaped holes, and round holes are taken as an example. The aperture of each circular hole can be different. In summary, the arrangement form of the communication hole group on the first part of the air supply barrel can be flexibly set by the person skilled in the art according to the actual situation.
With regard to the temperature and humidity reducing and dehumidifying system for the underground excavation roadway, in a possible implementation manner, the air supply barrel comprises a second part which is located on the downstream side of the first part and extends out of the first wall body, and the second part is accommodated in the column part and is communicated with the column part.
The fresh air flow can be more intensively sent to a local area by extending the second part of the air supply barrel out of the first part, and the arrangement facilitates the installation of the air supply barrel. In order to enable the fresh air flow to be diffused to the local area more quickly, a structure similar to the communication hole can be arranged on the cylinder wall of the second part, or the downstream end of the second part can be set to be a divergent horn opening, so that the fresh air flow can be diffused to the local area more quickly.
For the temperature-reducing and dehumidifying system for the underground excavation roadway, in a possible implementation manner, the end part of the air supply cylinder, which is far away from the excavation working surface, is provided with the second wall body, the upstream end of the air supply cylinder is arranged on the second wall body, the air supply unit comprises a refrigerating unit and a fan, and the refrigerating unit is connected with the upstream end of the air supply cylinder through the fan so as to feed the low-temperature and low-humidity fresh air flow generated by the refrigerating unit into the air supply cylinder.
If the fresh air flow is in a set temperature and humidity level, the refrigerating unit can generate the fresh air flow, or the temperature and humidity level of the fresh air flow can be adjusted according to actual conditions, and in addition, the fresh air flow sent into the air supply barrel can be adjusted by adjusting the amount of the fresh air flow generated by the refrigerating unit or adjusting the operation parameters (such as rotating speed) of the fan. The fresh air flow quantity and the temperature and humidity level are adjusted, so that the inner air lane and the outer air lane can obtain more comfortable temperature and humidity levels, and the working environment of the underground tunneling lane is further improved. As a simple example, a refrigeration unit generates a fresh air flow at a certain temperature and humidity level, and the fan is operated continuously at the same speed.
For the above system for cooling and dehumidifying a roadway for underground excavation, in a possible embodiment, at least one communication door is disposed on each of the first wall body and the second wall body.
For example, the communication door may be a material door primarily for material in and out transport or a pedestrian door primarily for the operator to traverse the work surface. According to the actual conditions, the door with two functions can be integrated, namely the specification can meet the requirements of the material and the operation personnel.
For the temperature reduction and dehumidification system for the underground excavation roadway, in a possible implementation manner, the side wall of the isolation body and the side wall of the excavation roadway are respectively arranged at a first air return opening and a second air return opening which are at least partially aligned with each other, and the air return roadway extends outwards from the second air return opening and is communicated with the external environment.
For the above-mentioned temperature and humidity reducing system for the underground excavation roadway, in one possible embodiment, the insulation body comprises an insulation layer made of a heat insulating material and/or a moisture insulating material.
By arranging the isolation layer, heat and/or moisture transfer between the outer air tunnel and the inner air tunnel, particularly between the annular part of the outer air tunnel and the inner air tunnel, can be avoided. This is because the air flow in the annulus does not already need to take into account the temperature and humidity levels as it passes directly to the return airway, in other words the temperature and humidity levels of the air flow in the annulus will generally be higher than in the inner airway, which will affect the air quality of the inner airway to some extent if heat transfer or wet infiltration occurs with the inner airway.
For the above system for cooling and dehumidifying a roadway for underground excavation, in one possible embodiment, the isolation body comprises a base body, and the isolation layer is arranged on at least one part of the base body.
Because the operators in a rest state stay in the inner air tunnel and the alertness of the operators is low at the moment, the strength of the inner air tunnel needs to be ensured in consideration of the safety of the underground tunneling tunnel. In this case, a base body can be formed first, for example a bridge body in the form of a frame structure and/or a plate structure. Illustratively, the base body comprises a frame structure which is approximately rectangular parallelepiped, the bottom of the frame structure is provided with a floor, the two ends of the frame structure are provided with a first wall surface and a second wall surface, and an isolation layer is attached to the outer surface of only the side wall part of the frame structure except the bottom surface, for example, the isolation layer is a carbon steel plate with moisture-proof performance.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the invention and, together with the description, serve to explain the principles of the invention. The present invention will be better understood and appreciated more fully when considered in conjunction with the accompanying drawings. The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure.
Fig. 1 shows a schematic structural diagram of a temperature reduction and dehumidification system for an underground excavation roadway of a high-temperature and high-humidity mine according to an embodiment of the invention.
List of reference numerals:
1. tunneling a roadway underground; 11. tunneling a working face; 2. an isolator; 31. a columnar portion; 32. a cyclic moiety; 4. an inner roadway; 5. a return airway; 51. an outer return air inlet; 52. an inner return air inlet; 6. a fan; 7. an air supply barrel; 71. a communicating hole; 8. a first wall body; 9. a second wall body.
Detailed Description
Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, procedures, components, and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram illustrating a temperature reduction and dehumidification system for an underground excavation roadway of a high-temperature and high-humidity mine according to an embodiment of the present invention. As shown in fig. 1, an underground excavation roadway 1 is formed in the process of mining a mine, and the right side of the excavation roadway is an excavation working face 11. Wherein the right side of the insulation 2 has a first wall 8 and the left side is provided with a second wall 9. Based on such a structure, the underground excavation roadway 1 behind the excavation face 11 is divided into two parts: the outside of the tubular structure and the downhole driving tunnel 1 form an outer tunnel and the first wall 8 and the inside of the tubular structure form an inner tunnel 4. The outer roadway comprises the following two parts: an annular portion 31 formed by the tubular structure and the side wall of the down-hole driving tunnel 1 and a column portion 32 formed by the side wall of the down-hole driving tunnel 1, the first wall body 8 and the driving face 11.
With continued reference to fig. 1, the air supply unit mainly includes a refrigerating unit (not shown) for generating a fresh air flow of low temperature and low humidity and supplying the fresh air flow into the air supply barrel 7 through the fan 6, a fan 6, and an air supply barrel 7. The right and left ends of the barrel 7 extend out and are fixed to the first and second walls 8 and 9. An outer air return inlet 51 is arranged below the outer roadway, an inner air return inlet 52 is arranged below the inner roadway 4, an air return roadway 5 which extends into rock mass on the periphery of the underground excavation roadway and leads to the external environment is arranged below the underground excavation roadway 1, and the inner air return inlet, the outer air return inlet and the air return roadway are respectively communicated and aligned with each other so as to discharge air out of the underground excavation roadway. Typically, a distance of 250-400mm (e.g., around 300 mm) should be maintained between the side walls of the excavation and the moisture barrier to allow for the placement of associated cables, tools, etc., and to ensure that air flow from the columnar areas is smoothly channeled through the annular portion to the return airway.
In the invention, the air supply unit respectively sends low-temperature and low-humidity fresh air flows into the outer roadway and the inner roadway to be mixed with high-temperature and high-humidity ambient air in the outer roadway and the inner roadway, and the outer roadway and the inner roadway can be communicated with the outside air through the return air roadway, so that the cooling and dehumidification of parts where operators stay in the outer roadway and the inner roadway are realized, and particularly, the cooling and dehumidification of the columnar part of the outer roadway and the inner roadway are realized.
The air supply barrel is provided with a communicating hole group on the barrel wall of the first part accommodated in the inner roadway and is communicated with the inner roadway through the communicating hole group. For example, the communication hole group comprises a plurality of communication hole units uniformly distributed along the axial direction of the air supply barrel, and each communication hole unit comprises a plurality of communication holes 71 distributed along the circumferential direction of the air supply barrel. Thus, the low-temperature and low-humidity fresh air flow is led to the columnar part from left to right along the first part, and part of fresh air flow is sent into the inner roadway to be mixed with high-temperature and high-humidity air in the inner roadway through the communicating hole group, so that the air comfort of the inner roadway is improved, and the air flow in the inner roadway is ensured through the communication between the inner roadway and the return air roadway.
The barrel further has a second portion extending beyond the first wall on a right side of the first portion, the second portion being received in and communicating with the cylindrical portion. Therefore, the low-temperature and low-humidity fresh air flow is mixed with the high-temperature and high-humidity air in the columnar part after passing to the columnar part from left to right, so that the air comfort of the columnar part is improved, and the air circulation in the outer roadway is ensured through the communication between the outer roadway and the return airway.
However, in the process that the low-temperature and low-humidity fresh air flow flows through the first part in the inner roadway, the pipe wall of the air supply pipe exchanges heat with air in the inner roadway, so that the air is heated by the damp and hot air in the inner roadway to a small extent, and the temperature of the columnar part treated by the cooling and dehumidifying system is slightly higher than that of the inner air roadway.
In a possible embodiment, the insulation is made of a water-impermeable material in order to isolate the exchange of moisture between the wind flows through the inner and outer galleries. If a carbon steel plate with good moisture insulation performance is adopted, and antiseptic treatment (such as spraying antiseptic paint) is carried out to prevent the phenomena of rusting in the separation body in the moisture insulation process and the like. In addition, a roadway bottom plate is additionally arranged on the inner side of the bottom of the isolating body so as to improve the strength of the inner roadway. In this embodiment, the moisture content is prevented from being transferred between the annular portion of the outer airway and the inner airway by the isolated body, so that the moisture content is prevented from flowing back to the inner airway. If the first wall is used as a part of the isolating body, therefore, it is also a carbon steel plate, and the second wall is mainly used for installing the air door of the air supply unit and is also used as a part of the inner air way, it is preferable that the second wall has higher strength and moisture-proof performance, if the carbon steel plate with the inner support is used, so that the moisture-proof performance of the inner air way is further improved on the premise of ensuring the bearing capacity of the air door.
In addition, in order to facilitate the tunneling operation, the material entering and exiting and the passing of the operator are required, for example, two communication doors are respectively arranged on the first wall body 8 and the second wall body 9, specifically, a first material door and a first pedestrian door are arranged on the first wall body 8, and a second material door and a second pedestrian door are arranged on the second wall body. According to the actual conditions, two kinds of doors are unified and designed, if only a first material door and a second material door are arranged, the two doors are also used as pedestrian doors at the moment. To ensure that the heat and moisture treatment levels are reduced due to air leaks, both the material door and the pedestrian door should be kept in a normally closed state. In addition, (second wall body, isolator, air supply section of thick bamboo) between and also should sealing connection between (second wall body, the underworkings) to prevent to leak out, can have under the prerequisite of good leakproofness between the interior tunnel that constructs and the outer tunnel, avoided the flow of heat and moisture to scurry and transmit, guaranteed the reliability of cooling dehumidification.
In a specific example, the mine is a coal mine, the cross section of an underground excavation roadway is trapezoidal, the cross section of an outer roadway is trapezoidal with the upper width of 1.8m, the lower width of 3m and the height of 2m, the cross section of an inner roadway is trapezoidal with the upper width of 1.2m, the lower width of 2.4m and the height of 1.7m, the length of a columnar area in the underground excavation roadway is about 5m, and the fresh air supply volume of the air supply barrel is about 30,000m3H is used as the reference value. The part of the air supply barrel in the inner roadway is provided with a communication hole unit every 5m along the axial direction, the communication hole unit comprises 3 communication holes which are uniformly distributed along the circumferential direction, and the size of each communication hole is
The temperature of high-temperature and high-humidity ambient air in the underground tunneling roadway is 35 ℃, and the relative humidity is 90%. After the treatment of the invention, the temperature of the inner tunnel is 20 ℃, the relative humidity is lower than 30 percent, and the temperature of the outer tunnel isThe temperature of the columnar area is 25 ℃ and the relative humidity is lower than 50%.
It should be noted that, although the temperature and humidity reducing and dehumidifying system has been described above by taking the insulator as a carbon steel plate with good humidity insulation performance and adding an inner tunnel bottom plate on the inner side of the bottom of the insulator as an example, it can be understood by those skilled in the art that the present invention should not be limited thereto. In fact, the skilled person can adjust the concrete form of the insulation body flexibly according to the actual situation, such as setting up a frame structure adapted to the shape of the tunnel, and then fixing a plate structure of other materials having both moisture-proof and heat-insulating properties on each side of the frame structure.
So far, the technical solutions of the present invention have been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. In other words, the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention.
Claims (7)
1. The utility model provides a high temperature and high humidity mine's tunnelling tunnel cooling dehumidification system in pit, tunnelling tunnel in pit has the tunnelling working face, its characterized in that, cooling dehumidification system includes:
1) the isolation body is of a cylindrical structure and is accommodated in the underground excavation roadway;
an inner roadway is formed on the inner side of the cylindrical structure, and an outer roadway is formed on the outer side of the cylindrical structure and the tunneling roadway;
2) the air supply unit can provide low-temperature and low-humidity fresh air flow and can be respectively communicated with the inner roadway and the outer roadway; and
3) a return airway respectively communicating with the inner and outer airways for exhausting air out of the underground excavation roadway;
wherein the tubular structure has a first wall at an end adjacent the driving face, the outer roadway comprises an annular portion formed by the tubular structure and a sidewall of the driving roadway and a columnar portion formed by the first wall and the driving face,
the air supply unit comprises an air supply barrel, and the air supply barrel axially penetrates through the inner roadway and is communicated with the inner roadway; and is
The downstream end of the air supply barrel along the air supply direction is communicated with the columnar part; specifically, the barrel includes:
the first part is accommodated in the inner roadway, a communication hole group is arranged on the first part along the axial direction of the air supply barrel, and the air supply barrel is communicated with the inner roadway through the communication hole group;
a second portion extending from the first wall on a downstream side of the first portion, the second portion being received in and communicating with the post portion.
2. The temperature and humidity reducing and dehumidifying system for the underground excavation roadway according to claim 1, wherein the communication hole group comprises at least one communication hole unit distributed in the axial direction of the air supply barrel, and the communication hole unit comprises at least one communication hole distributed in the circumferential direction of the air supply barrel.
3. The temperature and humidity reducing and dehumidifying system for underground excavation roadway according to claim 1, wherein the air supply barrel is provided with a second wall body at an end portion far from the excavation face, an upstream end of the air supply barrel is provided with the second wall body,
the air supply unit comprises a refrigerating unit and a fan, and the refrigerating unit is connected with the upstream end of the air supply barrel through the fan so as to feed the low-temperature and low-humidity fresh air flow generated by the refrigerating unit into the air supply barrel.
4. The system for cooling and dehumidifying in a downhole excavation roadway of claim 3, wherein at least one communication door is disposed on each of the first wall body and the second wall body.
5. The system for cooling and dehumidifying in a downhole excavation roadway according to any one of claims 1 to 4, wherein the side wall of the insulation body and the side wall of the excavation roadway are provided with a first air return opening and a second air return opening, respectively, which are at least partially aligned with each other, the air return roadway extending outward from the second air return opening and communicating with an external environment.
6. The system of any one of claims 1 to 4, wherein the insulation comprises an insulation layer made of a thermal and/or moisture insulating material.
7. The system of claim 6, wherein the insulation comprises a substrate, and wherein the insulation layer is disposed on at least a portion of the substrate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810870163.3A CN108894812B (en) | 2018-08-02 | 2018-08-02 | Underground tunneling roadway cooling and dehumidifying system for high-temperature and high-humidity mine |
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| CN201810870163.3A CN108894812B (en) | 2018-08-02 | 2018-08-02 | Underground tunneling roadway cooling and dehumidifying system for high-temperature and high-humidity mine |
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| CN108894812A CN108894812A (en) | 2018-11-27 |
| CN108894812B true CN108894812B (en) | 2020-04-21 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110593939A (en) * | 2019-09-30 | 2019-12-20 | 安徽理工大学 | Heat-damage mine coal face roadway heat-insulation and temperature-reduction system and method |
| CN110905581B (en) * | 2019-12-13 | 2021-06-15 | 湖南工程学院 | Movable type excavation roadway cooling equipment |
| CN112796818A (en) * | 2021-01-27 | 2021-05-14 | 中钢集团马鞍山矿山研究总院股份有限公司 | Local ventilation and refrigeration combined high-temperature excavation roadway heat extraction and cooling system |
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