CN113863985A - Mass-coupled mine water collecting and supplying system and method - Google Patents
Mass-coupled mine water collecting and supplying system and method Download PDFInfo
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Abstract
The invention provides a quality-coupled mine water collecting and supplying system and method, wherein the system comprises: the water quality on-line monitoring module is used for monitoring the water quality of underground mine water in real time; the reservoir water pump set is connected with the water quality online monitoring module; an underground reservoir group including an underground reservoir; the water level monitoring module group comprises a water level monitoring module; the underground water supply pump room is connected with the underground reservoir; the ground water supply center is connected with the underground water supply pump room and is used for supplying water to the ground; the intelligent control module is respectively connected with the water quality on-line monitoring module, the reservoir water pump set, the water level monitoring module set, the underground water supply pump room and the ground water supply center. The invention automatically and separately collects the underground mine water, reduces the later treatment cost of the mine water, can intelligently match and supply the mine water with proper water quality and water quantity according to the user requirements, realizes high-usage of good water and low-usage of poor water, reduces the utilization cost and improves the utilization rate of the mine water.
Description
Technical Field
The invention relates to the technical field of mine water protection and utilization, in particular to a mine water classified collection technology, a mine water quality coupling supply technology and a coal mine underground reservoir technology.
Background
At present, the coal yield of five provinces in China, such as jin, Shaan, Mongolia, Ning and Ganci, accounts for 70 percent of the national yield, but the water resource only accounts for 3.9 percent of the whole country, and the development of coal upstream and downstream industries such as coal-fired power generation and coal chemical industry is severely restricted by water shortage. Mine water is used as an important unconventional water resource in a mining area, and if the mine water can be fully utilized to supplement a water gap in the mining area, the mine water has important significance for harmonious development of regional economy and environment.
According to the water quality standard of drinking water sources (CJ3020-93), coal mine water can be classified into clean type and pollution type. Clean mine water is mainly underground water which is not polluted by mining activities, is mainly generated by coal mine drainage water and underground water infiltration, and can be used as domestic water only by disinfection treatment. In polluted mine water, typical pollution factors caused by mining activities are suspended matters, COD (chemical oxygen demand) and petroleum, wherein the suspended matters mainly come from coal dust and rock powder generated in underground production, and the COD and the petroleum mainly come from replacement discharge and leakage of emulsion and lubricating oil used by equipment such as a fully mechanized mining unit and a hydraulic support during underground inspection. In addition, leftover and excrement from downhole workers also contribute to the rise in COD in mine water.
At present, in most coal mines, after mine water is generated underground, clean mine water and polluted mine water are not distinguished, all the mine water is gathered into an underground water sump for concentration, then the mine water is lifted to a ground mine water treatment station through a water pump, and the mine water is recycled or discharged after the concentrated treatment. The mine water collecting method causes redundant treatment of clean mine water, and mine water with corresponding quality cannot be supplied according to different water quality requirements, so that the overall treatment and utilization cost is high. In addition, large-scale water storage facilities are difficult to construct on the ground, great fluctuation between the generation of mine water and the water demand of a mining area is difficult to reconcile, most of the mine water can only be discharged outside, and the utilization rate is low.
Disclosure of Invention
The invention aims to provide an intelligent system and method for classifying, collecting and storing underground mine water in a large scale according to water quality and supplying mine water with proper water quality and quantity according to user requirements, so that the cost for treating and utilizing the mine water is reduced, and the utilization rate of the mine water is improved.
To achieve the above object, the present invention provides a mass-coupled mine water collecting and supplying system, which comprises:
the water quality on-line monitoring module is used for monitoring the water quality of underground mine water in real time;
the warehousing water pump set is connected with the water quality online monitoring module;
the underground reservoir group comprises at least three underground reservoirs which are respectively used for storing water with different water qualities;
the water level online monitoring module group comprises at least three water level online monitoring modules which are respectively arranged in the underground reservoir;
the underground water supply pump room is connected with the underground reservoir;
the ground water supply center is connected with the underground water supply pump room and is used for supplying water to the ground;
the intelligent control module is respectively connected with the water quality online monitoring module, the reservoir water pump set, the water level online monitoring module set, the underground water supply pump house and the ground water supply center, the intelligent control module judges the classification of mine water and the water storage capacity of a reservoir by receiving monitoring data of the water quality online monitoring module, outputs instruction signals to control the reservoir water pump set to extract mine water to be discharged into an underground reservoir, outputs the instruction signals when the ground has water demand, and controls the underground water supply pump house to pump water from the underground reservoir to the ground water supply center and allocate the water to users.
The quality-coupled mine water collecting and supplying system comprises a water quality online monitoring module and a water quality monitoring module, wherein the water quality online monitoring module comprises an online monitor for monitoring petroleum, COD (chemical oxygen demand) and turbidity.
The mass-coupled mine water collecting and supplying system comprises an underground reservoir group and an underground reservoir group, wherein the underground reservoir group comprises a class I underground reservoir, a class II underground reservoir and a class III underground reservoir which are respectively used for storing clean mine water, general water quality mine water and inferior mine water.
The quality-coupled mine water collection and supply system is characterized in that the storage water pump set comprises a plurality of water pumps, and the water pumps are respectively connected with a plurality of underground reservoirs.
The quality-coupled mine water collecting and supplying system is characterized in that the underground water supply pump room comprises a plurality of water pumps, and the water pumps are respectively connected with a plurality of underground reservoirs.
The mass-coupled mine water collecting and supplying system is characterized in that the underground reservoir is an underground goaf formed by coal mining and is surrounded by coal pillars and artificial dam bodies.
The invention also provides a method implemented by using the mass coupling mine water collecting and supplying system, which comprises the following steps:
the method comprises the following steps: judging the classification of mine water;
step two: collecting and warehousing mine water in a classified manner;
step three: the water demand is coupled with the supply.
In a preferred embodiment, in the step one, the mine water determination conditions are as follows:
poor mine water: (petroleum > 5mg/L) or (COD)Mn＞15mg/L)
General mine water: [ (0.3mg/L < petroleum type not more than 5mg/L) and CODMn≤15mg/L]Or [ petroleum is less than or equal to 5mg/L and (3mg/L < COD)Mn≤15mg/L)]Or [ (petroleum) less than or equal to 0.3mg/L) and (COD)MnLess than or equal to 3mg/L) and (turbidity > 3NTU)]
Cleaning mine water: (petroleum is less than or equal to 0.3mg/L) and (COD)MnNot more than 3mg/L) and (turbidity not more than 3NTU)
In a preferred embodiment, in the second step, after the water quality type is determined by the mine water, the intelligent control module calculates whether the reservoir corresponding to the mine water has the residual storage capacity in real time, and when the residual storage capacity is obtained through real-time calculation, the intelligent control module outputs an instruction signal to start the storage water pump corresponding to the reservoir, and the mine water is discharged into the underground reservoir of the corresponding type for storage; when the reservoir is obtained through on-line monitoring water level calculation to be filled with no residual storage capacity, if the type I underground reservoir has no storage capacity, automatically judging whether the type II coal mine underground reservoir has the storage capacity, and if so, discharging the type II coal mine underground reservoir; if the II-type coal mine underground reservoir has no storage capacity, automatically judging whether the III-type coal mine underground reservoir has the storage capacity, and if so, discharging the III-type coal mine underground reservoir; and if the underground reservoir of the III coal mine has no storage capacity, discharging the mine water to the ground for treatment.
In the preferred embodiment, in the third step, after the real-time water storage capacity is calculated to meet the requirements of users, the intelligent control module sends a control instruction to the underground water supply pump room to pump water from the correspondingly classified reservoirs to the ground water supply control center, and then the water is allocated to the users; when the calculated water storage capacity cannot meet the user requirement, if the water storage capacity of the type III underground reservoir is insufficient, automatically transferring water to the type II underground reservoir for supplement; if the water storage capacity of the type II underground reservoir is insufficient, automatically transferring water to the type I coal mine underground reservoir for supplement; if the water storage capacity of the I-type underground reservoir is not enough, the insufficient part is supplemented by water transfer to an external high-quality water source.
The invention has the beneficial effects that:
(1) the underground mine water is automatically classified and collected, and the later treatment cost of the mine water is reduced.
(2) The mine water with proper water quality and water quantity can be intelligently matched and supplied according to the user requirements, so that high-grade water utilization and low-grade water utilization are realized, the utilization cost is reduced, and the utilization rate of the mine water is improved.
(3) The mine water is stored in the coal mine underground reservoir in a large scale, so that not only are mine water resources protected, but also large fluctuation between the generation of the mine water and the water demand of a mining area is blended, and the utilization rate of the mine water can be greatly improved.
Drawings
FIG. 1 is a schematic view of a collection and supply system according to the present invention;
FIG. 2 is a flow chart of mine water quality determination and classification collection;
FIG. 3 is a flow chart of quality-coupled water supply for water demand in a mining area;
fig. 4 is a schematic diagram of a preferred embodiment according to the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
First, as shown in fig. 1, which is a schematic diagram of a collecting and supplying system according to the present invention, the present invention provides a mass-coupled mine water collecting and supplying system, which mainly comprises: the system comprises a water quality online monitoring module 1, a storage water pump set 2, a coal mine underground reservoir group 3, a water level online monitoring module group 4, an underground water supply pump house 5, an intelligent control module 6 and a ground water supply center 7.
The water quality on-line monitoring module 1 is used for monitoring the water quality of underground mine water in real time and comprises an on-line monitor for monitoring petroleum, COD and turbidity. The water quality on-line monitoring module 1 is electrically connected with the intelligent control module 6 and can perform signal transmission for transmitting a water quality on-line monitoring result to the intelligent control module 6. The invention discloses on-line monitoring of three water qualities of petroleum, COD and turbidity, and can replace or add other water quality indexes for monitoring.
The reservoir water pump set 2 is connected with the water quality online monitoring module 1, and the reservoir water pump set 2 comprises a plurality of water pumps, such as three water pumps, which are respectively connected with I-III type coal mine underground reservoirs 3a, 3b and 3c of the coal mine underground reservoir group 3. In addition, the water pump group 2 for entering the reservoir is electrically connected with the intelligent control module 6 and can transmit signals, and when the intelligent control module 6 outputs instruction signals to require water delivery to one type of underground reservoir of the coal mine, the water pump connected with the type of underground reservoir is started to pump water.
The coal mine underground reservoir group 3 comprises at least three underground reservoirs, in a preferred embodiment, a type I coal mine underground reservoir 3a, a type II coal mine underground reservoir 3b and a type III coal mine underground reservoir 3c which are respectively used for storing clean mine water, general water quality mine water and inferior mine water. It should be noted that the coal mine underground water reservoir of the present invention may be replaced by other types of underground spaces. In addition, the mine water is collected and stored according to 3 water quality types, and can be collected and stored in more types.
The water level online monitoring module group 4 comprises at least three water level online monitoring modules, in a preferred embodiment, the water level online monitoring module comprises a class I reservoir water level monitoring module 4a, a class II reservoir water level monitoring module 4b and a class III reservoir water level monitoring module 4c, the water level monitoring module monitors the water level in the underground reservoir in real time through an online water level monitor, and the obtained water level height is multiplied by the length, width and water storage coefficient of the underground reservoir, so that the real-time water storage capacity of the reservoir can be obtained. In addition, the water level online monitoring module group 4 is electrically connected with the intelligent control module 6 and can perform signal transmission, and is used for transmitting the monitored water level condition to the intelligent control module 6, so that the current real-time water storage capacity of each underground reservoir is determined.
The underground water supply pump house 5 is connected with the coal mine underground reservoir group 3 and comprises a plurality of high-power water pumps and corresponding control systems. The underground water supply pump house 5 is electrically connected with the intelligent control module 6 and can transmit signals, and when the intelligent control module 6 outputs instruction signals to require water with specified water quality types to be conveyed to the ground, the underground water supply pump house 5 pumps out water in a corresponding reservoir and sends the water to the ground water supply center 7.
The ground water supply center 7 comprises corresponding water supply pipelines, water pumps, valves and other facilities, and also comprises a water intake pipeline which is responsible for distributing water pumped up by the underground water supply pump room to a specified user. Ground water supply center 7 and 6 electrical connections of intelligent control module and can carry out signal transmission, output command signal when there is the water demand in the ground, allocate for the user through ground water supply center 7.
The intelligent control module 6 is arranged at the ground water supply center 7 or other positions such as underground, the classification of mine water and the water storage capacity of a reservoir are judged through on-line monitoring data of mine water quality and the water level of the reservoir, an instruction signal is output to control the water pump group 2 to pump the mine water to be discharged into the coal mine underground reservoir group 3, the instruction signal is output when the water demand is available on the ground, and the underground water supply pump house 5 is controlled to pump water from the underground reservoir to the ground water supply center 7 and allocate the water to users.
The invention also provides a mass coupling mine water collecting and supplying method, which mainly comprises the following steps:
the method comprises the following steps: and (5) judging the classification of the mine water.
The quality of mine water shows periodic fluctuation under the influence of the mining time sequence. In the stage of draining water or stopping production in the initial mining stage, the produced mine water is basically underground water which is not polluted by mining activities, generally, the mine water can be used as domestic water only through disinfection treatment, and the mine water is divided into clean mine water. During the normal production period of a coal mine, a large amount of coal powder and rock powder are generated by coal cutting and roadway tunneling, the concentration of suspended matters is obviously increased after mine water is mixed with scattered coal powder and rock powder when the mine water flows through a roadway, the mine water is turbid and is more grey-black in color, the treatment difficulty of the suspended matters is not high, and the mine water is divided into general mine water. During the period of underground maintenance and 'moving and face-reversing', emulsion and lubricating oil of equipment such as a fully mechanized mining unit and a hydraulic support can be directly discharged into an underground roadway during replacement, the concentration of COD and petroleum is greatly increased after the emulsion and the lubricating oil are mixed with mine water flowing through the roadway, the emulsion and the lubricating oil have great harm to human bodies, and the treatment difficulty is high, so that the mine water is divided into inferior mine water.
The quality of mine water fluctuates continuously, and in order to distinguish clean mine water, general mine water and inferior mine water, the invention distinguishes by using a method for monitoring characteristic pollutants, such as petroleum, COD and suspended matters on line. An independent water collecting well is arranged at the collection position of the underground mine water, and petroleum and COD are sequentially arranged in front of a water inlet of the water collecting wellMnAnd the turbidity on-line monitor is used for transmitting the water quality monitoring data to the intelligent control module in real time for recording and analyzing, and comprehensively referring to limit values specified in sanitary standard for drinking water (GB 5749 & lt- & gt 2006), emission standard for pollutants in coal industry (GB 20426 & lt- & gt 2006), quality of industrial water for urban sewage recycling (GB/T19923 & lt- & gt 2005 & gt) and environmental quality standard for surface water (GB 3838 & lt- & gt 2002) for classification and judgment of the mine water. The classification determination conditions are shown in table 1, and the determination flow is shown in fig. 2.
TABLE 1 mine water classification determination conditions
In the mine water classification judgment condition of the invention, three water quality indexes, namely petroleum, COD and turbidity, are specified, and the indexes can be increased, reduced or replaced according to actual conditions, and the judgment condition of the indexes is changed.
Step two: and (4) classifying, collecting and warehousing mine water.
In the first step, the mine water is classified and judged according to the water quality, and then the mine water is classified and stored by using a reservoir group consisting of at least more than 3 coal mine underground reservoirs. An underground goaf formed by coal mining is reconstructed, and an underground reservoir is formed by utilizing coal pillars and artificial dams. The coal mine underground reservoir group is divided into a type I coal mine underground reservoir 3a, a type II coal mine underground reservoir 3b and a type III coal mine underground reservoir 3c which are respectively used for storing clean, general water quality and inferior mine water, and meanwhile, a water pump in a reservoir water pump group 2 is respectively connected with the type I to type III coal mine underground reservoirs. After the type of the mine water is judged, the intelligent control module 6 calculates whether the residual storage capacity exists in the reservoir corresponding to the mine water, the real-time water storage capacity of the underground reservoir can be obtained by multiplying the height of the water level of the reservoir monitored by the online water level monitor by the length, the width and the water storage coefficient of the underground reservoir, and the real-time residual storage capacity can be obtained by subtracting the real-time water storage capacity from the rated storage capacity of the reservoir, wherein the specific calculation formula is as follows:
real-time residual capacity ═ rated capacity- (length of reservoir × width of reservoir × online monitoring height of water level × water storage coefficient) (1)
And when the residual storage capacity is obtained through calculation, the intelligent control module outputs an instruction signal to the storage water pump corresponding to the reservoir of the type to be started, and mine water is discharged into the underground reservoir of the corresponding type to be stored. After the surplus storage capacity is obtained through calculation, according to the principle that good water can be stored in a low-level storage, if the type I coal mine underground reservoir 3a does not have the storage capacity, whether the type II coal mine underground reservoir 3b has the storage capacity is automatically judged, and if yes, the type II coal mine underground reservoir 3b is discharged; if the II-type coal mine underground reservoir 3b has no storage capacity, automatically judging whether the III-type coal mine underground reservoir 3c has the storage capacity, and if so, discharging the III-type coal mine underground reservoir 3 c; and if the underground coal mine reservoir 3c has no storage capacity, discharging the mine water to the ground for treatment. The classified storage process of mine water is shown in figure 2.
Step three: the supply step is coupled with the water demand mass.
The water demand of the mining area is divided into high-quality, common-quality and low-quality water demands according to the water quality standard. The water quality standard required by domestic water of workers and residents in a mining area, power plants and water for coal chemical industry is high, and the requirement of high-quality water is met; the water quality standards required by the greening, ecological restoration and agricultural water of mining areas are general, and the water quality requirements belong to general quality water requirements; the water quality standards required by coal preparation plant make-up water in mining areas, water for sprinkling in coal mine industrial squares and external roads and the like are not high, and the water quality requirements belong to the requirements of low-quality water. When a user submits a water demand, the intelligent control module calculates whether the water storage capacity of the water quality type required by the user is enough, and the real-time water storage capacity of the reservoir can be obtained by multiplying the height of the water level of the reservoir monitored on line by the length, the width and the water storage coefficient of the underground reservoir, wherein the specific calculation formula is as follows:
real-time reservoir water storage capacity (2) of reservoir length, reservoir width, water level, online monitoring height and water storage coefficient
When the real-time water storage capacity is calculated to meet the requirements of users, the intelligent control module sends a control instruction to the underground water supply pump room to pump water from the corresponding classified reservoirs to the ground water supply control center, and then the water is allocated to the users. When the calculated water storage capacity can not meet the user demand, according to the principle that good water can supplement low demand, if the water storage capacity of the type III coal mine underground reservoir 3c is not enough, the water can be automatically transferred to the type II coal mine underground reservoir 3b for supplement; if the water storage capacity of the II-type coal mine underground reservoir 3b is not enough, automatically transferring water to the I-type coal mine underground reservoir 3a for supplement; if the water storage capacity of the I-type coal mine underground reservoir 3a is not enough, the insufficient part is supplemented by water transfer of an external high-quality water source. The water demand quality coupling water supply flow for the mining area is shown in figure 3. In the present invention, the water demand is divided into 3 grades of "high quality, normal quality and low quality", and can be divided into more grades according to the demand type.
PREFERRED EMBODIMENTS
Taking a ten-million-ton coal mine in a large mining area in the west as an example, the mine generates about 60 ten-thousand meters of mine water every month3(2 km)3Day), before the technology is implemented, the mine water is not classified and collected, and the mine water is not stored by utilizing a coal mine underground reservoir, and is treated by a ground mine water treatment station uniformly and then returnedUsing about 25 ten thousand meters3And 35 ten thousand meters in the discharge area3The mine water utilization is only 42%.
Referring to fig. 4, after the technology of the present invention is implemented, mine water generated in the mine is collected into a water collecting well arranged in a low-lying position of a roadway. The water inlet of the water collecting well is provided with petroleum and CODMnAnd the water quality monitoring data is transmitted to a ground water supply control center in real time, and the intelligent control module is used for classification and judgment. And pumping the mine water after classification judgment out of the water collecting well by a downhole water pump group and discharging the mine water into the underground reservoirs of corresponding classification for storage. The mine respectively transforms 3 goafs into I-III type underground reservoirs, and the available storage reservoir capacity is 100 ten thousand meters each3. The mine generates about 60 ten thousand meters of mine water per month3After the water quality judgment of the intelligent control module, the clean mine water is about 35 ten thousand meters3Common mine water is about 21 ten thousand meters3Poor mine water about 4 ten thousand meters3。
The monthly high-quality water demand of the mining area of the mine is about 31 ten thousand meters3Wherein the domestic water needs 12 ten thousand meters3The water demand of the power plant is 9 km3Water demand of 10 ten thousand meters for coal chemical industry3(ii) a The monthly common quality water demand of a mining area is about 20 ten thousand meters3The water requirements for ecology and greening are met; the monthly low-quality water demand of the mining area is about 5 ten thousand meters3Wherein the water supply requirement of the coal preparation plant is 3 ten thousand meters3The water requirement for ground watering is 2 ten thousand meters3. After receiving the water demand, the intelligent control module automatically performs quality coupling on the required water quantity and water quality type and the underground reservoir water storage, controls the underground water supply pump room to pump water from the corresponding classified reservoir to the ground water supply control center, and then allocates the water to the designated user. The monthly water demand and reservoir water supply in the mine are shown in table 2.
TABLE 2 mine area monthly water demand and reservoir water supply (unit: ten thousand m)3)
As can be seen from Table 2, the area is 31 ten thousand meters per month3The high-quality water demand is completely supplied by a class I underground reservoir, and 20 ten thousand meters per month3The water demand of general quality is all supplied by a II-type underground reservoir, 5 ten thousand meters per month3Low quality water demand 4 km from class III underground reservoir 31 ten thousand m remains3The gap is supplemented by a class II coal mine underground reservoir. Thus, the mine was discharged monthly into 21 km of class II and class III coal mine underground reservoirs for storage3And 4 ten thousand m3The mine water is completely recycled, and 35 ten thousand meters of mine water is discharged into the I-class reservoir every month3Mine water only using 31 ten thousand meters34 ten thousand m remained due to good water quality3Can be directly discharged without being processed. In conclusion, after the technology provided by the invention is utilized, the utilization rate of the mine water is remarkably improved from 42% to 93%, and the total treatment capacity of the mine water is greatly reduced due to the classified collection of the clean mine water, so that the mine water treatment cost is effectively reduced, and the environmental and economic benefits are quite obvious.
It should be particularly noted that although the invention is disclosed in relation to the treatment of mine water in coal mines, it can be replaced by other types of sewage treatment.
In conclusion, the beneficial effects of the invention are as follows:
(1) the underground mine water is automatically classified and collected, and the later treatment cost of the mine water is reduced.
(2) The mine water with proper water quality and water quantity can be intelligently matched and supplied according to the user requirements, so that high-grade water utilization and low-grade water utilization are realized, the utilization cost is reduced, and the utilization rate of the mine water is improved.
(3) The mine water is stored in the coal mine underground reservoir in a large scale, so that not only are mine water resources protected, but also large fluctuation between the generation of the mine water and the water demand of a mining area is blended, and the utilization rate of the mine water can be greatly improved.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A mass-coupled mine water collection and supply system, comprising:
the water quality on-line monitoring module is used for monitoring the water quality of underground mine water in real time;
the warehousing water pump set is connected with the water quality online monitoring module;
the underground reservoir group comprises at least three underground reservoirs which are respectively used for storing water with different water qualities;
the water level monitoring module group comprises at least three water level monitoring modules which are respectively arranged in the underground reservoir;
the underground water supply pump room is connected with the underground reservoir;
the ground water supply center is connected with the underground water supply pump room and is used for supplying water to the ground;
the intelligent control module is respectively connected with the water quality online monitoring module, the reservoir water pump set, the water level monitoring module set, the underground water supply pump house and the ground water supply center, the intelligent control module judges the classification of mine water and the water storage capacity of a reservoir by receiving monitoring data of the water quality online monitoring module, outputs instruction signals to control the reservoir water pump set to extract mine water to be discharged into an underground reservoir, outputs the instruction signals when the ground has water demand, and controls the underground water supply pump house to pump water from the underground reservoir to the ground water supply center and then allocate the water to users.
2. The mass-coupled mine water collection and supply system of claim 1, wherein the water quality online monitoring module comprises an online monitor for monitoring petroleum, COD, and turbidity.
3. The mass-coupled mine water collection and supply system according to claim 1, wherein the underground reservoir group comprises a class I underground reservoir, a class II underground reservoir, and a class III underground reservoir for storing clean mine water, normal quality mine water, and poor quality mine water, respectively.
4. The mass-coupled mine water collection and supply system according to any one of claims 1 to 3, wherein the warehousing water pump set comprises a plurality of water pumps, and the plurality of water pumps are respectively connected with a plurality of underground reservoirs.
5. The mass-coupled mine water collection and supply system according to any one of claims 1 to 3, wherein the downhole water supply pumping house comprises a plurality of water pumps, the plurality of water pumps being connected to a plurality of underground reservoirs, respectively.
6. The mass-coupled mine water collection and supply system according to any one of claims 1 to 3, wherein the underground reservoir is a downhole goaf formed by coal mining, which is surrounded by pillars and man-made dams.
7. A method implemented with the mass-coupled mine water collection and supply system of any of claims 1 to 6, characterized by the steps of:
the method comprises the following steps: judging the classification of mine water;
step two: collecting and warehousing mine water in a classified manner;
step three: the water demand is coupled with the supply.
8. The method according to claim 7, characterized in that in the first step, the mine water determination conditions are as follows:
poor mine water: (petroleum > 5mg/L) or (COD)Mn＞15mg/L)
General mine water: [ (0.3mg/L < petroleum type not more than 5mg/L) and CODMn≤15mg/L]Or [ petroleum is less than or equal to 5mg/L and (3mg/L < COD)Mn≤15mg/L)]Or [ (petroleum) less than or equal to 0.3mg/L) and (COD)MnLess than or equal to 3mg/L) and (turbidity > 3NTU)]
Clean mine water: (petroleum is less than or equal to 0.3mg/L) and (COD)MnLess than or equal to 3mg/L) and (turbidity less than or equal to 3 NTU).
9. The method according to claim 7 or 8, characterized in that in the second step, after the mine water is judged to be of the water quality type, the intelligent control module calculates whether the reservoir corresponding to the mine water has the residual reservoir capacity in real time, and when the residual reservoir capacity is obtained through real-time calculation, the intelligent control module outputs an instruction signal to start a storage water pump corresponding to the reservoir, and the mine water is discharged into the underground reservoir of the corresponding type for storage; when the reservoir is obtained through on-line monitoring water level calculation to be filled with no residual storage capacity, if the type I underground reservoir has no storage capacity, automatically judging whether the type II coal mine underground reservoir has the storage capacity, and if so, discharging the type II coal mine underground reservoir; if the II-type coal mine underground reservoir has no storage capacity, automatically judging whether the III-type coal mine underground reservoir has the storage capacity, and if so, discharging the III-type coal mine underground reservoir; and if the underground reservoir of the III coal mine has no storage capacity, discharging the mine water to the ground for treatment.
10. The method according to claim 7 or 8, wherein in step three, after calculating the real-time water storage capacity to meet the user's demand, the intelligent control module sends a control instruction to the underground water supply pump room to pump water from the corresponding classified reservoir to the ground water supply control center, and then allocates the water to the user; when the calculated water storage capacity cannot meet the user requirement, if the water storage capacity of the type III underground reservoir is insufficient, automatically transferring water to the type II underground reservoir for supplement; if the water storage capacity of the type II underground reservoir is not enough, automatically transferring water to the type I coal mine underground reservoir for supplement; if the water storage capacity of the I-type underground reservoir is not enough, the insufficient part is supplemented by water transfer to an external high-quality water source.
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