CN205422798U - Formula mine cooling system is helped to dam in lane - Google Patents

Abstract

The utility model discloses a tunnel side closure type mine cooling system, which comprises a mine ventilation system and a circulating water system arranged along the mine ventilation tunnel; Down the mountain; the circulating water system includes refrigeration units and insulation pipes; there are drilling sites at intervals on both sides of the air inlet road, and there are drilling sites at intervals on both sides of the transportation up and down the mountain and the track up and down the mountain; between two adjacent drilling sites on the same side There are several rows of directional drilling holes, and each row of directional drilling holes has several rows; each directional drilling hole connected between adjacent drilling sites forms a water injection point; the water injection point adopts static pressure or dynamic pressure water injection; the ground pump The water inlet of the station is connected to the return pipe; the water outlet of the surface pumping station is connected with a heat exchanger through a pipeline; the heat exchanger is connected with the refrigeration unit through a pipeline. The utility model has good cooling effect, can adjust the water flow of each water injection point, and can effectively utilize geothermal energy at the same time.

Description

Roadside interception mine cooling system

technical field

The utility model relates to the technical field of underground cooling, and is suitable for high-temperature mines with strong geothermal heat, in particular to a mine cooling method and a cooling system.

Background technique

With the increase of mine mining intensity and the extension of mining depth, geothermal (geothermal heat source) disasters gradually threaten mine production, and the number of high-temperature mines is also increasing. Following the five major disasters in mines, geothermal has gradually become a major disaster in coal mine production safety.

Mine ventilation can not only supply underground fresh air, dilute gun smoke, gas and other toxic and harmful gases, but also effectively remove heat from the mining face, maintain a comfortable working environment, and ensure the physical health and labor safety of underground workers. The mining face must have sufficient air volume, but the adjustment range of mine air volume is generally not large. According to the different roadway sections, the air flow speed has certain requirements. For high-temperature mines, the fresh air flow has already exchanged heat with the ambient temperature in the roadway when it passes through the air inlet lane or track and is transported up (down) the mountain before entering the mining face, which makes the air flow temperature increase and the heated air flow is difficult Carry more heat from the mining face, so that the temperature of the mining face is too high.

In previous studies, mine cooling methods such as ventilating and cooling, extracting underground hot water sources, injecting low-temperature water or ice into coal seams, air compression refrigeration, and laying insulation materials on roadway walls were proposed.

For example: Most of the ventilation and cooling use refrigeration units or refrigerants to cool the intake air flow. Although there is a certain effect, due to the large mine air flow and cannot be recycled, the investment and operation costs are too large, and the cooling effect is limited.

The cooling method of laying heat insulation materials on the roadway wall is to add heat insulation materials to the back support of the roadway or the filling behind the wall, so as to "shield" the heat radiation of the surrounding rock of the roadway wall to the working face from the roadway, so as to reduce the temperature of the roadway. If the surrounding rock pressure is too high, the insulation material should have the characteristics of high compressive strength, low heat transfer coefficient, and small bulk density, so that the materials used are expensive; in addition, this technology is only temporarily delayed. The heat transfer from the surrounding rock to the roadway cannot prevent the heat transfer from the surrounding rock to the roadway. Therefore, it is urgent to find a method with small investment, high income, convenient mine operation, and effective reduction of mine ambient temperature.

Utility model content

The purpose of the utility model is to provide a roadside closure type mine cooling system, which has a good cooling effect, can adjust the water flow of each water injection point, is easy to operate, and can effectively utilize geothermal energy while realizing the cooling effect of the mine.

In order to achieve the above-mentioned purpose, the mine cooling system of the road side interception type of the utility model includes a mine ventilation system and a circulating water system arranged along the mine ventilation roadway;

The mine ventilation system includes an auxiliary air inlet shaft arranged downward from the ground, and the lower end of the auxiliary air inlet shaft is connected with the air inlet alley of the mine; The air inlet and trough of the working face supply air to the working face; the working face is connected with the return air up and down the hill, and the return air up and down the hill is connected with the return air alley, and the return air alley is connected with the vertical return air shaft, and the return air shaft is out on the ground;

The circulating water system includes a refrigerating unit arranged on the ground surface, the refrigerating unit is connected with an insulation pipe for transporting cooling water, and the insulation pipe leads into the mine along the air inlet auxiliary shaft;

Branch pipelines are respectively set in the transportation up and down hills and track up and down hills, and return water pipes are set in the return air alley, return air up and down hills, and return air wells;

There are drilling sites at intervals on both sides of the track and transportation up and down the mountain; there are several directional drilling holes between the adjacent drilling sites, and there are several rows of directional drilling holes in each row; the directional drilling holes connected between the adjacent drilling sites Drill a hole to form a water injection point; the water injection point adopts static pressure or dynamic pressure water injection;

Drilling sites are set at intervals on both sides of the air inlet road, and drilling sites are set at intervals on both sides of the transportation up and down hills and the track up and down the hill; there are several rows of directional drilling between the two adjacent drilling sites on the same side, and each row There are several rows of directional drilling; each directional drilling connected between adjacent drilling sites forms a water injection point; the water injection point adopts static pressure or dynamic pressure water injection;

The air inlet alley, the water injection points on the side of the up and down hill for transportation and the up and down hill of the track are connected in series to form the first waterway, and the water injection points on the side of the air inlet alley, the up and down hill for transportation and the up and down hill of the track are connected in series to form the second waterway. a waterway;

Taking the direction of water flow as the forward direction, the last water injection points in the first waterway and the second waterway are respectively connected to the insulation pipe through the centralized water inlet pipe, and the centralized water inlet pipe is provided with a diverter valve;

The concentrated outlet pipes at the frontmost water injection points in the first waterway and the second waterway are connected to the branch pipeline; the front end of the branch pipeline is connected to the return pipe; the return pipe is connected to the ground through the return air shaft;

The water inlet end of each directional drilling on both sides of the uphill and downhill transportation and the uphill and downhill of the track is connected to the branch pipeline through the centralized water inlet pipe, and the water outlet end is connected to the branch pipeline through the centralized water outlet pipe;

The ground surface at the air return shaft is provided with a ground pumping station for pumping backwater to the surface, and the water inlet of the ground pumping station is connected to the return pipe; the water outlet of the ground pumping station is connected to a heat exchanger through a pipeline; the heat exchange The device is connected to the refrigeration unit through pipelines.

The outlet water temperature of the refrigerating unit is 5°C-10°C; the diameter of the directional borehole is 89mm; the heat exchanger is a heat exchanger of a geothermal generator or a boiler; the geothermal generator is connected by a wire The refrigeration unit described above and supplies power to the refrigeration unit.

In principle, the utility model uses low-temperature circulating water to block the heat source from the side of the road into the air inlet, so as to avoid the high temperature of the air inlet and air flow affected by the geothermal heat, effectively reduce the ambient temperature in the air inlet, and thereby reduce the underground working surface. , drilling site and other places ambient temperature.

The setting of the diverter valve can flexibly adjust the water flow of each water injection point, so that each water injection point can work in an optimal state in a balanced manner.

When the utility model is in operation, the cooling water circulates continuously and continuously plays the role of blocking the heat source of the ground temperature. Specifically, the mine cooling method and cooling system of the roadside interception type of the utility model mainly use the low-temperature water generated by the refrigeration unit, and transport it to the underground through the insulation pipe (the insulation pipe can reduce the cooling loss along the way), and pour the low-temperature water into the Into the connected directional drilling holes in the two drilling sites, it plays the role of blocking the heat source of the ground temperature, inhibits the heat transfer of the wind to the air inlet roadway by the high-temperature surrounding rock, and prevents the wind from being heated before entering the working face, effectively Reducing the temperature of the mining face is more economical and effective than the previous methods of laying heat insulation materials and local fan refrigeration; at the same time, because the directional drilling is closer to the side of the road, it can also play the role of transferring cold energy and further prevent wind from entering The wind flow (fresh air) in the alley has too high a temperature rise.

When the geothermal generator is used as the heat exchanger, the electric energy generated by the geothermal generator can be used by the refrigeration unit to realize the utilization of waste heat and reduce the energy consumption of the refrigeration unit. The waste heat in water can also be utilized by adopting other heat exchangers, so that the utility model can make full use of pollution-free and non-consumption geothermal resources while preventing the under-mine temperature from being too high.

Description of drawings

Fig. 1 is the structural representation of the utility model;

1-Auxiliary air inlet shaft, 2-Insulation pipe, 3-Air inlet alley, 4-Directional drilling, 5-Transport up and down hills, 6-Inlet wind trough, 7-Working face, 8-Return air trough, 9-Air door, 10-Return air up and down hills, 11-Return air alley, 12-Return air well, 13-Splitter valve, 14-Drilling site, 15-Refrigeration unit, 16-Heat exchanger, 17-Surface pumping station , 18-Branch pipeline, 19-Insulation return pipe, 20-Centralized water inlet pipe, 21-Centralized water outlet pipe, 22-Main air inlet shaft, 23-Connection lane, 24-Return air connection lane of working face, 25-Track downhill

Figure 2 is an enlarged view of point A in Figure 1;

Fig. 3 is a schematic vertical sectional view of a row of directional drilled holes.

detailed description

Fig. 1 shows the roadside closure type mine cooling system for realizing the roadside closure type mine cooling method of the utility model. Arrows everywhere in Fig. 1 and Fig. 3 show the wind flow direction at this place. In the utility model, the direction of water flow is forward. Transporting up and down the hill 5 shows that the corresponding structure in the accompanying drawings can be transported up the hill, and can be transported down the hill again. Track up and down hill 25 represents that the corresponding structure in the accompanying drawing can be track up hill, can be track down hill again.

The utility model discloses a mine cooling method of road side interception type. Referring to Fig. 1, Fig. 2 and Fig. 3, the two sides of the air inlet road 3 of the mine using the method are provided with drilling sites 14 at intervals, and the air inlet road is connected There are transportation up and down hills 5 and track up and down hills 25, and both sides of transport up and down hills 5 and track up and down hills 25 are all provided with drilling sites 14 at intervals. A number of directional boreholes 4 are arranged between adjacent drilling sites 14, and each row of directional boreholes 4 is provided with several columns;

The road side intercepting type mine cooling method of the utility model is carried out according to the following steps:

The first step is to use the refrigerating unit 15 to prepare cooling water, and send the cooling water from the air inlet auxiliary shaft 1 to the air inlet roadway 3 in the mine through the insulation pipe 2; Hole 4 forms a water injection point; the water injection point adopts static pressure or dynamic pressure water injection;

The second step is to make the cooling water flow through the lane side directional drilling 4 arranged between the adjacent drill fields 14 on both sides of the air intake alley 3 when flowing along the air intake alley 3, and the cooling water flows through the directional borehole 4 During middle flow (cooling the airflow temperature around the air inlet road 3), the ground heat source is separated from the air inlet road, and the cold energy is transferred to the air inlet road 3; Each drilling site 14 is cooled by cooling water respectively;

The third step is to make the cooling water flow through the directional drilling 4 arranged between the adjacent drill fields 14 on both sides of the transportation downhill 5 and the track uphill 25 when the cooling water flows along the transportation uphill 5 and the track uphill 25, and the cooling water When flowing in the directional borehole 4, cool the surrounding rocks of the roadway for transporting up and down the hill 5 and the track up and down the hill 25, separate the geothermal heat source from the transporting up and down the hill 5 and the track up and down the hill 25, and move to the transport up and down the hill 5 and and The track goes up and down the mountain 25 to transfer cold energy, thereby cooling the temperature of the air intake air flow, and the cooled air intake air flow is transported to each working face, which can better reduce the ambient temperature of the working face. During this process, each drill field 14 transported up and down the mountain 5 sides is cooled by cooling water respectively.

The fourth step is that the cooling water flows through the directional boreholes in various places through the return air up and down the mountain 10 and the return air alley 11 to the return air shaft 12. When the cooling water flows in the directional boreholes 4, it is heated by the geothermal heat source. The temperature gradually rises to become high-temperature water; the high-temperature water flows to the air return shaft 12, and the high-temperature water is pumped to the ground through the ground pump station 17;

The fifth step is to pump the high-temperature water from the return air well 12 to the heat exchanger 16 by the surface pumping station 17 installed on the surface, and then send it to the heat exchanger 16. When the high-temperature water passes through the heat exchanger 16, the heat energy in it is recovered, so that it can be regenerated. use. The water with a higher temperature after being cooled by the heat exchanger 16 re-enters the refrigeration unit 15, and then starts to circulate continuously from the first step. The heat energy recovered by the heat exchanger 16 is preferably supplied to the geothermal generator, and the generated electric energy drives the refrigerating unit 15 to cool down the water fed into the refrigerating unit again.

The heat exchanger is a heat exchanger 16 arranged on the boiler water supply pipe (to increase the temperature of boiler inlet water and reduce boiler energy consumption) or a heat exchanger 16 of a geothermal generator. Of course, it can also be the heat exchanger 16 of other hot water utilization devices.

As shown in Figure 1, Figure 2 and Figure 3, the utility model also discloses a roadside closure type mine cooling system for realizing the above-mentioned roadside closure type mine cooling method, the system includes a circulating water system arranged along the mine ventilation system ;

The mine ventilation system includes an air inlet auxiliary shaft 1 arranged downwards from the ground, and the lower end of the air inlet auxiliary shaft 1 communicates with the air inlet lane 3 of the mine; 25. Transportation up and down the mountain 5 is connected to the air inlet trough 6 of the working face 7 to supply air to the working face; 11 is connected with a return air shaft 12 arranged vertically, and the upper end of the return air shaft 12 is exposed on the ground;

The circulating water system includes a refrigerating unit 15 arranged on the ground surface. The refrigerating unit 15 is connected with an insulation pipe 2 for transporting cooling water. arrangement;

The transportation up and down hill 5 and the track up and down hill 25 are respectively provided with branch pipelines 18, and the return air alley 11 and the return air up and down hill 10 are provided with return pipes 19;

Drilling sites 14 are arranged at intervals on both sides of the air inlet road 3, and drilling sites 14 are provided at intervals on both sides of the transportation up and down hill 5 and the track up and down hill 25; several row lanes are arranged between the two adjacent drilling sites 14 on the same side Directional drilling 4, each row of directional drilling 4 is provided with several columns; each directional drilling 4 connected between adjacent drilling sites 14 forms a water injection point; the water injection point adopts static pressure or dynamic pressure water injection;

As shown in Figure 2 and in conjunction with Figure 1, the water injection points on the side of the wind inlet lane 3, the transportation up and down the hill 5 and the track up and down the hill 25 are connected in series to form the first waterway, the wind inlet lane 3, the transportation up and down the hill 5 and The water injection points on the other side of the track up and down the mountain 25 are connected in series to form a second waterway;

Taking the direction of water flow as the forward direction, the last water injection points in the first waterway and the second waterway are respectively connected to the heat preservation pipe 2 through the centralized water inlet pipe 20 and the diverter valve 13 is provided on the centralized water inlet pipe 20;

The concentrated outlet pipe 21 of the water injection point in the first waterway and the second waterway joins together and then connects the branch pipeline 18; the front end of the branch pipeline 18 is connected to the return pipe 19; the return pipe 19 passes through the return air shaft 12 to ground;

One end of the water inlet of each directional borehole 4 on both sides of the up and down hill 5 and the track up and down the hill 25 is connected to the branch pipeline 18 through the centralized water inlet pipe 20 and the water outlet end is connected to the branch pipeline 18 through the centralized water outlet pipe 21;

The ground surface at the air return shaft 12 is provided with a surface pumping station 17 for pumping backwater to the surface, and the water inlet of the ground pumping station 17 is connected to the return pipe 19; The exchanger 16; the 16 of the heat exchanger is connected to the refrigeration unit 15 through a pipeline.

There are two air intake shafts, which are the auxiliary air intake shaft 1 and the main air intake shaft 22 respectively. The insulation pipe 2 is preferably passed into the mine through the air inlet auxiliary shaft 1, and may also be passed into the mine through the air inlet main shaft 22.

The outlet water temperature of the refrigeration unit 15 is 5°C-10°C; the diameter of the directional drilling 4 is 89 mm;

A connection lane 23 is provided between the transportation up and down hill 5 and the return air up and down hill 10, and a damper 9 is arranged on the communication lane 23;

The working face 7 is provided with an air inlet chute 6 and a return air chute 8, the air inlet chute 6 of the working face 7 is connected to the up and down hill 5 for transportation, and the return air chute 8 of the working face 7 passes through the return air connection lane of the working face 24 is connected to the return air up and down hill 10;

The heat exchanger can be a heat exchanger 16 arranged on the boiler water supply pipe (which can increase the boiler inlet water temperature and reduce boiler energy consumption), and the preferred setting is that the heat exchanger 16 is a heat exchanger of a geothermal generator The geothermal generator is connected to the refrigeration unit 15 through wires and supplies power to the refrigeration unit 15. Of course, other heat exchangers may also be used.

The branch pipeline 18 and the water return pipe 19 are heat preservation pipelines.

When laying out the roadside interception type mine cooling system of the utility model for the mine, the roadside directional drilling 4 is constructed by a pit drilling rig, and the hole is sealed by the "casing type" sealing method after construction, and the hole is externally connected with a flange , connect the pipeline with the directional drilling 4 through the flange. The connecting directional drilling 4 between two adjacent drilling sites 14 is used as a water injection point, and the water injection point adopts static pressure or dynamic pressure water injection, and the water is parallel to the orientation of the roadway in the two drilling sites 14 on the same side of the air inlet roadway The flow in the borehole 4 blocks the heat transfer from the ground heat to the wind flow in the air inlet lane.

When in use, the low-temperature water produced by the refrigerating unit 15 is transported underground through the auxiliary air inlet shaft 1 through the insulation pipe 2, and the cooling water is diverted to the water injection points on both sides of the roadway by the diverter valve 13, and the water flow is sent to each mining area. Multiple rows and rows of directional drilling 4 with a diameter of 89mm are constructed between the air inlet roadway 3 and the adjacent drilling site 14 at the 5 places where the mining area is transported up and down the mountain, and the holes are sealed by casing type sealing; when the cooling water flow When passing through these connected directional boreholes 4, part of the heat around the roadway will be taken away, which will cause the water temperature to rise. The heated hot water is pumped to the ground by the high-power pump in the surface pumping station 17 through the return air well 12 through the thermal insulation return pipe 19 arranged in the return air alley 11, and the hot water is recycled. After that, it is delivered to the refrigeration unit 15 again to start a new round of circulation.

After the wind flows through the air inlet auxiliary shaft 1 and enters the air inlet alley 3, due to the cooling effect of the cooling water, the wall surface temperature of the air inlet alley 3 and the transportation up and down hill 5 roadway is relatively low, thereby having a certain cooling effect on the air inlet flow, so that the air entering The airflow temperature of the mining face 7 is reduced, effectively improving the working environment of the mining face 7 .

The above embodiments are only used to illustrate and not limit the technical solutions of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that the present utility model can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present utility model shall fall within the scope of the claims of the present utility model.

Claims (1)

1. lane side shutoff type type pit cooling system, it is characterised in that: include mine ventilation system and the circulation laid along mine ventilation roadway；

Described mine ventilation system includes the air intake auxiliary shaft down-set by ground, and lane big with the air intake of mine, air intake auxiliary shaft lower end is connected；The big lane of air intake connects to be had in transport and goes down the hill on track, and transporting upper and lower Rhizoma Atractylodis Macrocephalae and connecing the air intake crossheading of work surface is work surface air-supply；Work surface connects to be had on return air, and the upper and lower Rhizoma Atractylodis Macrocephalae of return air is connected to the big lane of return air, and the big lane of return air connects has vertically arranged returnairshaft, returnairshaft upper end to be exposed to earth's surface；

Described circulation includes the refrigeration unit being arranged on earth's surface, and refrigeration unit connects the insulating tube having for transporting cooling water, and insulating tube is passed through mine along air intake auxiliary shaft；

It is respectively arranged with branch line in going down the hill in described transport and going down the hill on track, the big lane of described return air, return air is gone down the hill and in returnairshaft, is provided with return pipe；

Go down the hill on track and transport both sides and be interval with drill site；Being provided with side directional drilling in some row lanes between adjacent drill site, often row's directional drilling is provided with some row；The each directional drilling being connected between adjacent drill site forms an injection point；Injection point uses static pressure or dynamical pressure water infusion；

Air intake great Xiang both sides are interval with drill site, and both sides of transport being gone down the hill and goes down the hill on track are interval with drill site；Being provided with side directional drilling in some row lanes between two drill sites that homonymy is adjacent, often row's directional drilling is provided with some row；The each directional drilling being connected between adjacent drill site forms an injection point；Injection point uses static pressure or dynamical pressure water infusion；

Go down the hill in the big lane of air intake, transport and side of going down the hill on track injection point mutually contact formation Article 1 water route, the big lane of air intake, transport are gone down the hill and opposite side of going down the hill on track injection point mutually contact formed Article 2 water route；

With water flowing direction as forward direction, in Article 1 water route and Article 2 water route rearmost injection point respectively by concentrate water inlet pipe connect insulating tube and concentrate water inlet pipe be provided with flow divider；

Article 1, in water route and Article 2 water route, the concentration outlet pipe of forefront injection point connects branch line；The front end of branch line connects back to water pipe；Return pipe passes to ground by returnairshaft；

Go down the hill and go down the hill on track water inlet one end of each directional drilling of both sides in transport by concentrating water inlet pipe to connect branch line and its water outlet one end by concentrating outlet pipe to connect branch line；

Earth's surface at returnairshaft is provided with the ground pump station for backwater draws up earth's surface, and the water inlet of ground pump station connects described return pipe；The outlet of ground pump station is connected by pipeline heat exchanger；Heat exchanger connects described refrigeration unit by pipeline.