CN108217779B - Underground reservoir grading and purifying system and arrangement method thereof - Google Patents
Underground reservoir grading and purifying system and arrangement method thereof Download PDFInfo
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- 239000011435 rock Substances 0.000 abstract description 14
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- 150000002500 ions Chemical class 0.000 description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 10
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- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 239000007832 Na2SO4 Substances 0.000 description 2
- 229910021538 borax Inorganic materials 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- -1 iron ions Chemical class 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
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- 235000011941 Tilia x europaea Nutrition 0.000 description 1
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- RECVMTHOQWMYFX-UHFFFAOYSA-N oxygen(1+) dihydride Chemical compound [OH2+] RECVMTHOQWMYFX-UHFFFAOYSA-N 0.000 description 1
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- 238000005507 spraying Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/583—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing fluoride or fluorine compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a graded purification system of an underground reservoir, which comprises the underground reservoir, wherein the underground reservoir comprises a first water storage area and at least one second water storage area; a purification and permeation reaction wall is arranged between the first water storage area and the second water storage area; a row of molding holes are arranged in the first water storage area, and a row of molding holes are also arranged in the second water storage area; a freezable area is formed in the area where each row of die forming holes are located; a reaction wall forming space is formed between the freezable regions on the two sides, the purification and permeation reaction wall is formed in the reaction wall forming space, and a liquid injection drilling hole is formed in the top end of the purification and permeation reaction wall. The invention also discloses a layout method of the underground reservoir grading purification system. The grading and purifying system for the underground reservoir and the layout method thereof can fully utilize the rock mass space of the caving in the coal mine underground reservoir, realize grading and purifying treatment on mine water, and meet the water demand of different underground mechanical equipment and engineering construction conditions.
Description
Technical Field
The invention relates to the technical field of coal mine underground reservoirs, in particular to an underground reservoir grading and purifying system and a laying method thereof.
Background
The coal mine underground reservoir forms a closed space by using a section coal pillar and an artificial dam body of a working face goaf, mine water is stored through gaps, cracks, separation space and the like of a caving rock body of the goaf after coal seam excavation, and physicochemical actions such as filtration, precipitation, adsorption, ion exchange and the like are carried out on the mine water by fully utilizing the caving rock body of the goaf, so that the purification treatment of the mine water is realized, the mine water is changed into valuable things, and the reuse of the mine water is realized.
Because the source of the underground mine water is wide, the mine water contains various organic matters, inorganic matters and other ionic impurities, and the mine water has different purposes after the mine water is subjected to the purification effect of the caving rock mass in the underground reservoir. For example, the water can be used for spraying dust fall, cooling water for mechanical equipment, water for an electro-hydraulic control system of a hydraulic support and the like. The requirements of different engineering machines and engineering construction conditions on the quality of mine water are different, so that the mine water needs to be graded according to different engineering machines and construction conditions.
However, the underground reservoir in the prior art generally performs self-purification only through the caving rock mass in the underground reservoir, and the purified water sometimes cannot meet the requirements.
Disclosure of Invention
The invention aims to provide a grading purification system for an underground reservoir and a layout method thereof, which are used for realizing grading purification treatment of mine water in a coal mine underground reservoir and have the obvious advantages of simple process, convenience in construction, low cost and the like.
The technical scheme of the invention provides a graded purification system of an underground reservoir, which comprises the underground reservoir, wherein the underground reservoir comprises a first water storage area and at least one second water storage area;
the first water storage area comprises a water inlet pipe, and each second water storage area comprises a water outlet pipe;
a permeable purification and permeation reaction wall for purifying water is arranged between the first water storage area and the second water storage area;
a row of molding holes are arranged on one side of the first water storage area close to the purification and permeation reaction wall, and a row of molding holes are also arranged on one side of the second water storage area close to the purification and permeation reaction wall;
a freezable area which can be frozen, sealed and unfrozen to be unsealed is formed in the area where each row of the molding holes are located;
and a reaction wall forming space is formed between the freezable regions on the two sides, the purification and permeation reaction wall is formed in the reaction wall forming space, and a liquid injection drilling hole is formed at the top end of the purification and permeation reaction wall.
The technical scheme of the invention also provides a layout method for laying the underground reservoir stage purification system, which comprises the following steps:
s001: dividing an underground reservoir into a first water storage area and a second water storage area according to preset conditions;
s002: respectively constructing a row of molding holes in the first water storage area and the second water storage area, wherein a freezable area is formed in the area where each row of molding holes are located, and reaction wall forming spaces for forming purification permeable reaction walls are formed in the freezable areas on two sides;
s003: freezing the freezable area on each side by a freezing construction method to form a waterproof isolation wall;
s004: constructing a liquid injection drill hole at the top end of the space formed by the reaction wall;
s005: injecting a water purification material for purifying, adsorbing and filtering water into the space formed by the reaction wall through the liquid injection drill hole;
s006: the water purification material is filled in the space formed by the reaction wall until the preset requirement is met, and then a purification permeation reaction wall is formed;
s007: and unfreezing the freezable sections on the two sides, and removing the sealing of the separation walls on the two sides.
By adopting the technical scheme, the method has the following beneficial effects:
by dividing the underground water into regions and arranging the purification and permeation reaction walls among different water storage regions, the water can be purified and adsorbed. The purification and permeation reaction wall for removing specific ion impurities can be arranged according to different sources and purposes of mine water in the coal mine underground reservoir, and the grading purification treatment of the mine water in the underground reservoir is realized.
The grading and purifying system for the underground reservoir and the layout method thereof can fully utilize the rock mass space of the coal mine underground reservoir, realize grading and purifying treatment on mine water, and meet the water demand of different underground mechanical equipment and engineering construction conditions.
Drawings
FIG. 1 is a schematic view of a staged purification system for an underground reservoir provided by an embodiment of the present invention;
FIG. 2 is a schematic view of the freezable area on both sides of the reaction wall forming space;
FIG. 3 is a schematic view showing the formation of a separation wall in a freezable area and a purification permeable reaction wall in a reaction wall forming space;
FIG. 4 is a top view of the partition wall formed in the area of the molding hole;
FIG. 5 is a schematic view of a grouting device;
fig. 6 is a schematic view of a sleeve.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 to 4, an embodiment of the present invention provides a graded purification system for an underground water reservoir, which includes an underground water reservoir 1, where the underground water reservoir 1 includes a first impoundment area 11 and at least one second impoundment area 12.
Wherein the first water storage area 11 comprises a water inlet pipe 13 and each second water storage area 12 comprises a water outlet pipe 14.
A purification permeation reaction wall 2 which is used for purifying ions in water and can permeate water is arranged between the first water storage area 11 and the second water storage area 12.
A row of molding holes is arranged on one side of the first water storage area 11 close to the purification and permeation reaction wall 2, and a row of molding holes is also arranged on one side of the second water storage area 12 close to the purification and permeation reaction wall 2.
A freezable area 5 capable of being frozen and unsealed and unfrozen is formed in the area where each row of the molding holes 3 is located.
A reaction wall forming space 8 is formed between the freezable regions 5 on both sides, the purification and permeation reaction wall 2 is formed in the reaction wall forming space 8, and an injection hole 6 is provided at the top end of the purification and permeation reaction wall 2.
The grading purification system of the underground reservoir provided by the invention is mainly used for grading purification of water in the coal mine underground reservoir so as to meet different water purification requirements.
The underground reservoir grading and purifying system comprises an underground reservoir 1, wherein the underground reservoir 1 is divided into a first water storage area 11 and a second water storage area 12, and a plurality of second water storage areas 12 can be arranged according to needs.
The first water storage area 11 is provided with a water inlet pipe 13 for water inlet. The second water storage area 12 is provided with a water outlet pipe 14 for discharging water, and purified water can be conveyed to a designated position.
The first water storage area 11 and the second water storage area 12 are goafs, and the first water storage area 11 and the second water storage area 12 are filled with falling rocks, so that primary purification or self-purification of water can be realized.
In order to further improve the purification effect, a purification permeable reaction wall 2 is arranged between the first water storage area 11 and the second water storage area 12, which is permeable to water for purifying ions in water to improve the water purification effect. Specifically, the purification permeation reaction wall 2 made of different materials can be arranged according to different ions in the purified water.
The purification and permeation reaction wall 2 is mainly used for removing pollutants such as metal ions, acid ions and the like in water, such as iron ions, magnesium ions, sulfate ions, fluorine ions and the like.
Because the underground reservoir 1 is filled with the falling rocks and water, the construction method is required to be adopted for constructing the purification and permeation reaction wall 2.
The freezing construction method is to freeze water in soil around underground space to be constructed into ice and to be cemented with soil by means of artificial refrigeration to form one frozen soil wall or sealed frozen soil body in designed contour to resist soil pressure and isolate underground water. The refrigerant may be liquid nitrogen.
A row of molding holes 3 are respectively constructed on both sides of the purification and permeation reaction wall 2, and each row of molding holes comprises a plurality of molding holes 31. One of the rows of orifices 3 is located in the first reservoir 11 and the other row of orifices 3 is located in the second reservoir 12.
The region in which each row of molding holes 3 is located may be formed as a freezable section 5 that can be frozen and sealed, or thawed and unsealed. When the freezable area 5 is frozen, a partition wall 4 for temporarily blocking water is formed in the freezable area 5. A reaction wall forming space 8 is formed between the two freezable regions 5 on both sides, and when the freezable regions 5 are frozen, the reaction wall forming space 8 is not frozen, and a material may be filled into the reaction wall forming space 8 to form the purification permeable reaction wall 2.
When the freezable regions 5 on both sides are frozen and sealed by a freezing construction method, water in the regions where the two rows of molding holes are located or water in the freezable regions 5 is frozen and is adhered to falling rocks to form a partition wall with two temporarily water-proof surfaces, so that the reaction wall forming space 8 is temporarily separated from the first water storage region 11 and the second water storage region 12, water cannot flow into the reaction wall forming space 8 from the first water storage region 11, the reaction wall forming space 8 can be constructed, and water purification materials are filled or injected into the reaction wall forming space 8.
Specifically, a water purification material or the like is fed into the reaction wall forming space 8 through the liquid injection drilled hole 6. The injection borehole 6 is formed by drilling a side roadway 16 of the underground reservoir 1. The die holes 31 are also punched from one side roadway 16 of the underground reservoir 1.
The liquid injection drilled hole 6 is arranged at the top end of the reaction wall forming space 8, and facilitates the water purification material to flow into the reaction wall forming space 8 by its own weight.
The injection hole 6 is used for injecting water purification material into the closed space 5, and after the water purification material is injected into the reaction wall forming space 8, the water purification material is filled in the gaps between the falling rocks for sealing the gaps between the falling rocks, and is also attached to the surface of the falling rocks, so that a permeable wall body is formed. Because the wall body is provided with the water purification material, the wall body can purify water and permeate water, and is called as a purification and permeation reaction wall 2. Of course, the injection hole 6 is also located on the top of the purification permeation reaction wall 2 after the purification permeation reaction wall 2 is formed.
After the purification permeable reactive wall 2 is formed, the freezing of the freezable sections 5 on the two sides is released, the separation wall 4 is released, at the moment, water between the first water storage area 11 and the second water storage area 12 can circulate, the water in the first water storage area 11 after the falling rocks are self-purified is further purified by the purification permeable reactive wall 2 and then enters the second water storage area 12, the water in the second water storage area 12 is self-purified again through the falling rocks, and can be selectively discharged through the water outlet pipe 14, so that the grading purification is realized, and the purification requirement is met.
It should be noted that, the purification permeable reactive barrier 2 with different purification functions can be set as required to meet different purification requirements.
Also can set up multiaspect purification infiltration reactive barrier 2 as required, every purifies infiltration reactive barrier 2 and can all select different purifying material to filter different water impurity or water ion, satisfies different purification requirements.
Preferably, the purification permeation reaction wall 2 is filled with a water purification material, which is Fe2+Water purifying Material, Ca2+Water purification Material, Mg2+Water purification material and/or SO4 2-A water purification material.
The water purification material may be in a fluid form and can be injected into the reaction wall forming space 8 through the injection drilled holes 6.
The purification and permeation reaction wall 2 mainly removes Fe in mine water2+、Ca2+、Mg2+、SO4 2-And the like. For removing Fe by adsorption2+Is Fe2+Purifying and adsorbing material for adsorbing and removing Ca2+Is Ca2+Purification and adsorption material for adsorption and removal of Mg2+The material of (A) is Mg2+Purifying and adsorbing material for adsorbing and removing SO4 2-Is SO4 2-Purifying the adsorption material.
Wherein, Fe2+The purifying and adsorbing material is mainly formed by mixing borax and quicklime, and the purifying and permeating reaction wall 2 is filled with the mixed borax and the quicklime, so that Fe can be added2+Into Fe (OH)3Thereby making Fe (OH)3Is absorbed in the purification permeation reaction wall 2. When the purification permeation reaction wall 2 reaches the adsorption saturation state, the purification capacity is reduced, a proper amount of hydrochloric acid is injected into the purification permeation reaction wall 2, and Fe (OH) is added3Decomposed into ferric chloride and water, and flows out of the purification and permeation reaction wall 2, so that the purification and permeation reaction wall 2 recovers the adsorption and purification capacity.
Ca2+Purification adsorbent and Mg2+The purifying and adsorbing material is mainly ion exchange resin, the ion exchange resin with smaller particle size is injected into the purifying and permeating reaction wall 2, and Ca is treated by the ion exchange resin2+、Mg2+And (4) carrying out adsorption. When the purification and permeation reaction wall 2 reaches the adsorption saturation state, the purification capacity is reduced, NaCl is injected into the purification and permeation reaction wall 2 to regenerate the ion exchange resin, so that the purification and permeation reaction wall 2 recovers the adsorption and purification capacity.
SO4 2-The purification and adsorption material is mainly quicklime, the quicklime is injected into the purification and permeation reaction wall 2, and the quicklime is used for converting SO4 2-To CaSO4Thereby being adsorbed in the purification reaction wall. When the purification permeable reactive barrier 2 reaches the adsorption saturation state, the purification ability is lowered. Na can be injected into the purification and permeation reaction wall 22CO3Mixing CaSO4Conversion to Na2SO4With CaCO3Then injecting HCl to make CaCO3Dissolved into CaCl2、H2O、CO2Finally, a small amount of water is injected to thoroughly clean the purification and permeation reaction wall 2, and the purification capacity is recovered.
Because the mine water has more complex components and does not have different requirements of engineering and machinery on the mine water quality, the purification and adsorption material is not single, but different purification and adsorption materials are adopted to remove corresponding ions according to different water requirements, for example, lime and polyaluminium chloride can also be adopted to remove SO4 in the mine water2-、F-And (3) plasma.
Preferably, as shown in fig. 1 to 3, each row of the molding holes 3 includes a plurality of molding holes 31, the plurality of molding holes 31 are arranged at intervals from each other in the vertical direction, each molding hole 31 extends laterally in the horizontal direction, and any adjacent two molding holes 31 are parallel.
Wherein the die holes 31 in the first reservoir 11 are through the first reservoir 11 and the die holes 32 in the second reservoir 12 are through the second reservoir 12.
The mold holes 31 are through holes which penetrate through a designated area, a plurality of mold holes 31 are arranged at intervals in the vertical direction, the axes of the mold holes extend transversely in the horizontal direction, the adjacent mold holes 31 are parallel, and each row of mold holes 3 defines a freezable area 5 through the mold holes 31.
Preferably, as shown in fig. 1 to 4, the underground water reservoir 1 includes a plurality of second impoundment areas 12, and a purification and permeation reaction wall 2 is disposed between every two adjacent second impoundment areas 12.
One side of each second water storage area 12 close to the purification and permeation reaction wall 2 is respectively provided with a row of molding holes 3.
Similarly, the corresponding area of each row of the molding holes 3 is a freezable area 5, a reaction wall forming space 8 is formed between two adjacent freezable areas 5 in two second impoundment areas 12, then an injection drilling hole 6 is constructed at the top of the reaction wall forming space 8, and water purification material is injected into the reaction wall forming space 8 to form the purification permeable reaction wall 2.
Namely, a purification and permeation reaction wall 2 is arranged between two adjacent second water storage areas 12 and is used for carrying out graded purification treatment on water. Different positions of the purification permeable reactive walls 2 can be arranged as required for purifying different ions or pollutants to meet different requirements.
In the present invention, when the purification capacity of the purification permeable reactive barrier is reduced, the purification permeable reactive barrier may be cleaned to restore the purification capacity, and the cleaning method will be described in detail in the following examples.
Preferably, as shown in fig. 2 and 5-6, a grouting device 7 is arranged in the injection borehole 6.
The grouting device 7 includes a sleeve 71, a piston 72 slidably disposed in the sleeve 71, and a piston rod 73 connected to the piston 72.
The sleeve 71 is fitted into the injection hole 6, and a plurality of slurry outlet holes 711 are provided at intervals in the sleeve 71.
The grouting device 7 is used for injecting liquid into the liquid injection drill hole 6, so that the liquid injection efficiency and the uniform diffusion degree are improved.
The grouting device 7 includes a sleeve 71, a piston 72, and a piston rod 73, and the sleeve 71 is provided with a plurality of grout outlet holes 711.
When the water purification material is injected, the purification permeable reaction wall 2 can be formed by diffusing the slurry into the reaction wall forming space 8 by the injection pressure of the injection device 7 and the self-gravity of the slurry. The piston rod 73 can drive the piston 72 to move in the sleeve 71, and the water purification material is injected in sections by using different positions of the piston 72 in the sleeve 71. The injected water purification material is uniformly diffused through the slurry outlet 711 under the action of the injection pressure and the gravity of the slurry to form a purification permeation reaction wall with uniform purification capacity. In addition, the piston rod is used for driving the piston to move in the sleeve, so that the sleeve can be cleaned, and the blockage of the pipe and the like caused by slurry can be prevented.
According to the grading purification system for the underground reservoir, provided by the invention, the mine water is subjected to self-purification treatment to a certain degree after passing through the first water storage area, and still contains more impurity ions. According to different engineering purposes of mine water, specific impurity ions need to be removed, so that a sealed area with a certain shape is defined in a goaf by utilizing two vertically arranged molding holes 3, and a water purification material for removing specified ions is injected into the defined sealed area to form a first purification and permeation reaction wall 2. After the primarily filtered mine water passes through the first purification and permeation reaction wall 2, the mine water and the chemical cementing material in the purification and permeation reaction wall 2 are subjected to chemical reaction, so that specified impurity ions can be removed, and purified water meeting the application standard of specific engineering is formed.
Purified water meeting the application standard of a specific project is stored in the first second water storage area 12 and can be led out through the water outlet pipe 14, so that the requirements of different underground mechanical equipment or water for project construction are met.
According to different underground water use standards, if other specified impurity ions still need to be removed, other purification permeable reactive walls 2 can be arranged between the adjacent second water storage areas 12 by the same method to remove the specified ions to form purified water meeting the specific engineering application standard, and then the water can be led out through the water outlet pipe 14 of the specified second water storage area 12 to meet different underground mechanical equipment or engineering water.
Because different underground mechanical equipment or different water use standards for engineering construction are different, a plurality of purification and permeation reaction walls can be arranged according to the method, and the coal mine underground reservoir is divided into multi-stage water storage areas which can meet the different water use standards for mechanical equipment or engineering.
An embodiment of the present invention further provides a layout method for laying the underground reservoir classification purification system, which is shown in fig. 1 to 4, and includes the following steps:
s001: the underground water reservoir 1 is divided into a first impoundment area 11 and a second impoundment area 12 according to a preset condition.
S002: a row of forming holes 3 are respectively constructed in the first water storage area 11 and the second water storage area 12, wherein a freezable area 5 is formed in the area where each row of forming holes 3 is located, and a reaction wall forming space 8 is formed between the two freezable areas 5 on two sides.
S003: the freezable section 5 on each side is frozen by a freezing method to form a water-proof partition wall 4.
S004: and constructing a liquid injection drilling hole 6 at the top end of the reaction wall forming space 8.
S005: water purification materials for purifying, adsorbing and filtering water are injected into the reaction wall forming space 8 through the liquid injection drill 6.
S006: the water purification material is filled in the reaction wall forming space 8 until the preset requirements are met to form the purification permeation reaction wall 2.
S007: the freezable regions 5 on both sides are thawed, and the sealing of the partition walls 4 on both sides is released.
The method specifically comprises the following steps: two rows of molding holes 3 are driven from one side lane 16 of the underground reservoir to a designated position of the underground reservoir 1, such as a first impoundment area 11 and a second impoundment area 12, each row of molding holes 3 comprises a plurality of molding holes 31, and the molding holes 31 penetrate through the whole underground reservoir or the first impoundment area 11 and the second impoundment area 12. By using two vertically arranged molding holes 3 with a certain distance, a freezable area 5 can be artificially arranged in the underground reservoir by adopting a freezing construction method and the like, and a temporary closed wall can be formed, so that an area where a purification and permeation reaction wall is located or a reaction wall forming space 8 is encircled in the underground reservoir. And a liquid injection drilling hole 6 is arranged at the top end of the reaction wall forming space 8 from a side roadway 16 of the underground reservoir, and water purification materials can be injected into the reaction wall forming space 8 through the liquid injection drilling hole to form the purification and permeation reaction wall 2 with certain water permeability and purification capacity. After the purification permeable reactive barrier 2 is formed, the freezing of the freezable area 5 is released, and the sealing is released, so that the water in the first water storage area 11 and the water in the second water storage area 12 are circulated.
When the sealing is released, the die forming hole 3 and the injection drilling hole 6 are reserved for subsequent use.
Preferably, the layout method further comprises: a purification and permeation reaction wall 2 is arranged between any two adjacent second water storage areas 12, and the purification and permeation reaction wall comprises the following steps:
and respectively constructing a row of molding holes 3 in each second water storage area 12, wherein a reaction wall forming space is formed between the freezable sections 5 corresponding to the two adjacent rows of molding holes 3 in two adjacent second water storage areas 12.
Construction is then performed in the manner of step S003 to step S007 described above.
Namely, a purification and permeation reaction wall 2 is arranged between two adjacent second water storage areas 12 and is used for carrying out graded purification treatment on water. Different positions of the purification permeable reactive walls 2 can be arranged as required for purifying different ions or pollutants to meet different requirements.
Preferably, the layout method further comprises: the method also comprises the step of cleaning the purification permeation reaction wall 2 between the first water storage area 11 and the second water storage area 12, and comprises the following steps:
freezing the freezable zone 5 corresponding to the row of forming holes 3 in the first water storage area 11 by a freezing construction method to form the partition wall 4.
The freezable area 5 corresponding to the row of molding holes 3 in the second impound area 12 is kept in a non-frozen state.
And injecting a dissolving solution into the purification and permeation reaction wall 2 through the injection drill hole 6, and cleaning the purification and permeation reaction wall 2 through the dissolving solution.
After cleaning is completed, the partition wall 4 in the first impoundment area 11 is thawed.
When the filtering and adsorbing capacity of the purification and permeation reaction wall 2 is reduced, the freezable area 5 corresponding to the single-row forming holes 3 on the water inlet side of the purification and permeation reaction wall is reused to form a single-channel closed wall 4, and a dissolving liquid is injected into the purification and permeation reaction wall 2 through the liquid injection drilling holes 6, so that reverse osmosis cleaning of the purification and permeation reaction wall 2 is realized, and the filtering, adsorbing and purifying capacity of the purification and permeation reaction wall 2 is restored. After the cleaning is finished, the single-channel sealing wall 4 formed by the row of the die holes 3 is removed, and the removal capability of the purification and permeation reaction wall 2 on the designated ions in the mine water is recovered.
The solution enters the second reservoir 12 and is discharged through the outlet pipe 14.
The dissolving solution is a solution or fluid capable of making the purification permeation reaction wall 2 recover the purification adsorption capacity, and different dissolving solutions can be used according to the purification of the non-used ions.
For example: for adsorbing and removing Fe in the purification and permeation reaction wall 22+In this case, the solution is hydrochloric acid. Injecting proper amount of hydrochloric acid into the purification and permeation reaction wall 2, and adding Fe (OH)3Decomposed into ferric chloride and water, and flows out of the purification and permeation reaction wall 2, so that the purification and permeation reaction wall 2 recovers the adsorption and purification capacity.
The purification and permeation reaction wall 2 is used for adsorbing and removing Ca2+In the meantime, the solution is NaCl, and the NaCl regenerates the ion exchange resin, so that the purification and permeation reaction wall 2 recovers the adsorption and purification ability.
The purification and permeation reaction wall 2 is used for removing SO by adsorption4 2-When the solution is Na2CO3And HCl. Na (Na)2CO3Mixing CaSO4Conversion to Na2SO4With CaCO3Then injecting HCl to make CaCO3Dissolved into CaCl2、H2O、CO2Finally, a small amount of water is injected to thoroughly clean the purification and permeation reaction wall 2, and the purification capacity is recovered.
Preferably, the layout method further comprises: the method also comprises the step of cleaning the purification permeable reactive wall 2 between two adjacent second impoundment areas 12, wherein the second impoundment area close to the first impoundment area 11 side in the two adjacent second impoundment areas 12 is called an upstream second impoundment area, and the second impoundment area far away from the first impoundment area 11 side is called a downstream second impoundment area.
It includes:
and freezing the freezable area 5 corresponding to the row of the forming holes 3 in the upstream second water storage area by a freezing construction method to form the partition wall 4.
The freezable regions 5 corresponding to the row of molding holes 3 in the downstream second impounded area are maintained in a non-frozen state.
And injecting a dissolving solution into the purification and permeation reaction wall 2 through the injection drill hole 6, and cleaning the purification and permeation reaction wall 2 through the dissolving solution.
After cleaning is completed, the partition wall 4 in the upstream second impoundment area is thawed.
The cleaning method is the same as the cleaning method of the purification permeable reactive barrier 2 between the first water storage area 11 and the second water storage area 12.
Preferably, the layout method further comprises: further comprises the step of injecting water purification material into the space formed by the reaction wall through a grouting device 7, comprising:
the piston 72 is stopped at different positions in the sleeve 71 in sections, and water purification materials are injected into the space formed by the reaction wall in sections through different slurry outlet holes 711. The injected water purification material is uniformly diffused through the slurry outlet 711 under the action of the injection pressure and the gravity of the slurry to form a purification permeation reaction wall with uniform purification capacity. In addition, the piston rod is used for driving the piston to move in the sleeve, so that the sleeve can be cleaned, and the blockage of the pipe and the like caused by slurry can be prevented.
According to the needs, the above technical schemes can be combined to achieve the best technical effect.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.
Claims (10)
1. The graded purification system of the underground reservoir is characterized by comprising the underground reservoir, wherein the underground reservoir comprises a first water storage area and at least one second water storage area;
the first water storage area comprises a water inlet pipe, and each second water storage area comprises a water outlet pipe;
a permeable purification and permeation reaction wall for purifying water is arranged between the first water storage area and the second water storage area;
a row of molding holes are arranged on one side of the first water storage area close to the purification and permeation reaction wall, and a row of molding holes are also arranged on one side of the second water storage area close to the purification and permeation reaction wall;
a freezable area which can be frozen, sealed and unfrozen to be unsealed is formed in the area where each row of the molding holes are located;
and a reaction wall forming space is formed between the freezable regions on the two sides, the purification and permeation reaction wall is formed in the reaction wall forming space, and a liquid injection drilling hole is formed at the top end of the purification and permeation reaction wall.
2. The underground reservoir staged purification system according to claim 1, wherein the purification permeable reaction wall is filled with a water purification material for removing Fe by adsorption2+Fe (b) of2+Water purification material for adsorption removal of Ca2+Ca of (2)2+Water purification material for adsorption removal of Mg2+Mg of (2)2+Water purification material and/or for adsorption removal of SO4 2-SO of (A)4 2-A water purification material.
3. The staged purification system for an underground reservoir as claimed in claim 1, wherein each row of said molding holes comprises a plurality of molding holes, said plurality of molding holes are vertically spaced from each other, each of said molding holes extends laterally in a horizontal direction, and any two adjacent molding holes are parallel;
the die hole in the first water storage area is communicated with the first water storage area, and the die hole in the second water storage area is communicated with the second water storage area.
4. The underground water reservoir grading purification system according to claim 1, wherein the underground water reservoir comprises a plurality of second water storage areas, and one purification permeable reaction wall is arranged between every two adjacent second water storage areas;
and one side of each second water storage area, which is close to the purification and permeation reaction wall, is provided with a row of the molding holes respectively.
5. The underground reservoir stage purification system according to claim 1, wherein a grouting device is arranged in the injection borehole;
the grouting device comprises a sleeve, a piston which is arranged in the sleeve in a sliding mode and a piston rod which is connected with the piston;
the sleeve is installed in the liquid injection drill hole, and a plurality of slurry outlet holes are formed in the sleeve at intervals.
6. A method for laying the underground reservoir stage purification system of any one of claims 1 to 5, comprising the steps of:
s001: dividing an underground reservoir into a first water storage area and a second water storage area according to preset conditions;
s002: respectively constructing a row of molding holes in the first water storage area and the second water storage area, wherein a freezable area is formed in the area where each row of molding holes are located, and a reaction wall forming space is formed in two freezable areas on two sides;
s003: freezing the freezable area on each side by a freezing construction method to form a waterproof isolation wall;
s004: constructing a liquid injection drill hole at the top end of the space formed by the reaction wall;
s005: injecting a water purification material for purifying, adsorbing and filtering water into the space formed by the reaction wall through the liquid injection drill hole;
s006: the water purification material is filled in the space formed by the reaction wall until the preset requirement is met, and then a purification permeation reaction wall is formed;
s007: and unfreezing the freezable sections on the two sides, and removing the sealing of the separation walls on the two sides.
7. The laying method as claimed in claim 6, wherein the purification infiltration reaction wall is laid between any two adjacent second impoundment areas, and comprises the following steps:
respectively constructing a row of the molding holes in each second water storage area, wherein a reaction wall forming space is formed between the freezable sections corresponding to the two adjacent rows of the molding holes in the two adjacent second water storage areas;
and performing construction in the manner of the step S003 to the step S007.
8. The deployment method as recited in claim 6, further comprising the step of cleaning the purification permeable reactive wall between the first impoundment area and the second impoundment area, comprising:
freezing the freezable zone corresponding to the row of the molding holes in the first water storage area by a freezing construction method to form the partition wall;
keeping the freezable area corresponding to the row of the molding holes in the second water storage area in a non-frozen state;
injecting a dissolving solution into the purification and permeation reaction wall through the injection drilling hole, and cleaning the purification and permeation reaction wall through the dissolving solution;
and after cleaning is finished, unfreezing the separation wall in the first water storage area.
9. The laying method as recited in claim 7, further comprising a step of cleaning the purification permeable reactive wall between two adjacent second impoundment areas, wherein the second impoundment area close to the first impoundment area side of the two adjacent second impoundment areas is called an upstream second impoundment area, and the second impoundment area far away from the first impoundment area side is called a downstream second impoundment area;
the method comprises the following steps:
freezing the freezable zone corresponding to the row of the molding holes in the upstream second water storage area by a freezing construction method to form the partition wall;
maintaining the freezable regions corresponding to the rows of the molding holes in the downstream second impound area in a non-frozen state;
injecting a dissolving solution into the purification and permeation reaction wall through the injection drilling hole, and cleaning the purification and permeation reaction wall through the dissolving solution;
and after cleaning is completed, unfreezing the separation wall in the upstream second water storage area.
10. The laying method as claimed in claim 6, further comprising the step of injecting a water purification material into the reaction wall forming space by a grouting device, comprising:
and the piston is stopped at different positions in the sleeve in sections, and water purification materials are injected into the space formed by the reaction wall in sections through different slurry outlet holes.
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