CN113483846A - Groundwater level self-control separation system and groundwater pollution separation system - Google Patents
Groundwater level self-control separation system and groundwater pollution separation system Download PDFInfo
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- CN113483846A CN113483846A CN202110614566.3A CN202110614566A CN113483846A CN 113483846 A CN113483846 A CN 113483846A CN 202110614566 A CN202110614566 A CN 202110614566A CN 113483846 A CN113483846 A CN 113483846A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/004—Sealing liners
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/04—Level control, e.g. controlling quantity of material stored in vessel with auxiliary non-electric power
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/20—Measuring flow in sewer systems
Abstract
The invention discloses an underground water level self-control blocking system and an underground water pollution blocking system. The underground water level self-control blocking system comprises a water level monitoring unit and a water level control unit; the water level monitoring unit is used for monitoring the inner water level and the outer water level of the separation area, the inner water level is continuously lower than the outer water level and exceeds a preset first time length to generate a first water level adjusting signal, and the inner water level is continuously higher than the outer water level and exceeds a preset second time length to generate a second water level adjusting signal; the water level control unit is used for extracting external underground water from the outside of the blocking area according to the first water level adjusting signal and injecting the external underground water into the blocking area so as to reduce the water level difference between the inner water level and the outer water level; the water level control unit is used for extracting internal underground water from the blocking area according to the second water level adjusting signal and discharging the internal underground water to the outside of the blocking area so as to reduce the water level difference between the internal water level and the external water level, thereby realizing the balance of internal and external water pressure, reducing the damage of the underground water pressure to the blocking system, prolonging the service life of the blocking system and ensuring the stability of the blocking system.
Description
Technical Field
The invention relates to a groundwater pollution control technology, in particular to an groundwater water level self-control blocking system and a groundwater pollution blocking system.
Background
With the rapid development of social economy, the accelerated urbanization process and the deepened adjustment of industrial structures, a plurality of main urban areas of cities are subjected to nonferrous metal smelting, petroleum processing, chemical industry, coking, electroplating, tanning, hazardous waste storage, utilization, disposal activities and other industries and enterprises migrate out of the cities, a large number of sites with environmental risks are left, heavy metals or organic pollutants in the polluted sites pollute soil and underground water for a long time, and great threats are generated to ecological environment and human health.
In practical engineering, the barrier wall is widely applied to the control of heavy metal and organic pollutants in polluted land and leachate in a refuse landfill. The change of the underground water level has obvious influence on the stress characteristic of an underground structure, and related researches show that the compressive strength of concrete is continuously reduced along with the lapse of time under the influence of two factors of a seepage field and a stress field. The water load can damage the vertical barrier wall body, and the pore water pressure accelerates the damage and the micro-crack expansion of the barrier wall body, so that the anti-permeability performance and the service life of the barrier wall are influenced. The geomembrane flexible barrier wall has excellent anti-seepage effect, but the end connecting device is easy to be damaged by water pressure. The traditional underground water pollution barrier wall usually only considers the barrier wall body self-control effect, but neglects the damage of underground water pressure to the wall body, so that the barrier wall design fails to achieve the barrier control effect and the service life.
Disclosure of Invention
The invention aims to overcome the defect that in the prior art, the internal and external water levels of a groundwater pollution blocking system cannot be automatically adjusted, so that the blocking system is easily damaged by water level pressure to cause blocking failure, and provides an groundwater water level self-control blocking system and a groundwater pollution blocking system.
The invention solves the technical problems through the following technical scheme:
the invention provides an underground water level self-control blocking system which comprises a water level monitoring unit and a water level control unit;
the water level monitoring unit is used for monitoring an inner water level in a blocking area and an outer water level outside the blocking area, the inner water level is continuously lower than the outer water level and exceeds a preset first time length to generate a first water level adjusting signal, and the inner water level is continuously higher than the outer water level and exceeds a preset second time length to generate a second water level adjusting signal;
the water level control unit is used for extracting external underground water from the outside of the blocking area according to the first water level adjusting signal and injecting the external underground water into the blocking area so as to reduce the water level difference between the inner water level and the outer water level;
the water level control unit is also used for extracting internal underground water from the blocking area according to the second water level adjusting signal and discharging the internal underground water to the outside of the blocking area so as to reduce the water level difference between the internal water level and the external water level.
Preferably, the system further comprises a purification unit for purifying internal groundwater extracted from the baffled region to obtain purified water and storing the purified water in a first storage pond;
the water level control unit is also used for extracting the purified water from the first storage pool according to the second water level adjusting signal and discharging the purified water to the outside of the blocking area so as to reduce the water level difference between the inner water level and the outer water level.
Preferably, the water level control unit extracts rainwater from the rainwater storage pool according to the first water level adjustment signal and injects the extracted rainwater into the blocking region, and if all the rainwater in the rainwater storage pool is injected into the blocking region and the inner water level is still lower than the outer water level, the external groundwater is extracted from the outside of the blocking region and injected into the blocking region so that the inner water level is equal to the outer water level.
Preferably, the water level control unit extracts the purified water from the first storage tank according to the second water level adjustment signal and discharges the purified water to the outside of the blocking area, and if all the purified water in the first storage tank is injected to the outside of the blocking area and the inner water level is still higher than the outer water level, the internal groundwater is continuously extracted and discharged to the outside of the blocking area after being purified by the purification unit, so that the inner water level is equal to the outer water level.
Preferably, the water level monitoring unit comprises a plurality of water level monitors, at least one of which is disposed within the inner monitoring well and at least one of which is disposed within the outer monitoring well;
the external monitoring well is arranged outside the blocking area, and the internal monitoring well is arranged in the blocking area;
extracting external groundwater from outside the blocked zone includes extracting external groundwater from the external monitoring well, and extracting internal groundwater from within the blocked zone includes extracting internal groundwater from the internal monitoring well.
Preferably, when the inner water level is lower than the outer water level and the water level difference between the inner water level and the outer water level is continuously greater than a preset first water level difference for more than the preset first time period, the water level monitoring unit generates the first water level adjustment signal;
and/or the presence of a gas in the gas,
and when the inner water level is higher than the outer water level and the water level difference between the inner water level and the outer water level is continuously larger than a preset second water level difference and exceeds the preset second duration, the water level monitoring unit generates the second water level adjusting signal.
Preferably, the water level control unit is further configured to stop pumping the external groundwater from outside the blocking area to inject into the blocking area when the water level difference between the inner water level and the outer water level is smaller than a preset third water level difference or when the inner water level is equal to the outer water level;
and/or the presence of a gas in the gas,
the water level control unit is also used for stopping extracting internal underground water from the blocking area and discharging the internal underground water to the outside of the blocking area when the water level difference between the inner water level and the outer water level is smaller than a preset fourth water level difference or when the inner water level is equal to the outer water level difference.
The invention also provides an underground water pollution blocking system, which comprises the underground water level self-control blocking system, and a blocking area formed by a blocking wall inserted into an underground impermeable layer along the edge of the pollution area;
inside groundwater is stored in the blocking area, and outside groundwater is stored outside the blocking area.
Preferably, the groundwater pollution blocking system further comprises a first storage pool arranged in the blocking area, and the first storage pool is used for storing purified water;
and/or the presence of a gas in the gas,
the underground water pollution blocking system also comprises a rainwater storage pool arranged in the blocking area, and the rainwater storage pool is used for collecting and storing rainwater;
and/or the presence of a gas in the gas,
the groundwater pollution blocking system further comprises an inner monitoring well arranged in the blocking area and an outer monitoring well arranged outside the blocking area.
Preferably, the exposed earth surface, the first storage pool and the rainwater storage pool in the barrier area are all paved with materials with waterproof barrier function to form a bottom waterproof layer;
and/or the presence of a gas in the gas,
a covering film is additionally arranged in the first storage pool;
and/or the presence of a gas in the gas,
the rainwater storage pool is provided with an overflow port, and when the rainwater storage pool is full of storage, redundant rainwater flows out through the overflow port.
The positive progress effects of the invention are as follows: according to the invention, the water level monitoring unit for monitoring the inner water level and the outer water level in the blocking area and the water level control unit for adjusting the inner water level and the outer water level according to the water level adjusting signal are arranged, so that the balance of the inner water pressure and the outer water pressure is effectively controlled, the damage of the underground water pressure to the blocking system is reduced, the service life of the blocking system is prolonged, and the stability of the blocking system is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a groundwater level self-control blocking system according to embodiment 1 of the present invention.
Fig. 2 is a schematic view showing that the inner water level of the blocking region is lower than the outer water level in embodiment 1 of the present invention.
Fig. 3 is a schematic diagram of the inner water level of the barrier region being higher than the outer water level in example 1 of the present invention.
Fig. 4 is a schematic top view showing the structure of the groundwater contamination barrier system according to example 1 of the present invention.
FIG. 5 is a schematic view of the bottom side view of the groundwater contamination barrier system according to embodiment 1 of the present invention.
FIG. 6 is another schematic view of the structure of the bottom side of the groundwater contamination barrier system according to example 1 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
Fig. 1 is a schematic structural diagram of the groundwater level self-control blocking system according to the present embodiment, which may be applied to the groundwater pollution blocking system shown in fig. 4. The groundwater pollution blocking system comprises a blocking area 13 formed by a blocking wall 4 inserted into an underground impervious layer along the edge of the pollution area and a groundwater level self-control blocking system.
Referring to fig. 4, inside groundwater is stored in the blocking area 13, outside groundwater is stored outside the blocking area 13, in an alternative embodiment, the groundwater pollution blocking system further includes a first storage pool 5 and a rainwater storage pool 6 disposed in the blocking area 13, the blocking area 13 is configured to block polluted groundwater in the blocking area 13, the first storage pool 5 is configured to store purified water, the rainwater storage pool 6 is configured to collect and store rainwater, the number of the first storage pool 5 and the number of the rainwater storage pool 6 are more than one, for example, the number of the first storage pool 5 shown in fig. 4 is 4, the number of the rainwater storage pool 6 is 2, and the specific number thereof can be flexibly adjusted according to actual conditions.
Referring to fig. 1, the groundwater level self-control blocking system of the present embodiment includes a water level monitoring unit 1 and a water level control unit 2.
The water level monitoring unit 1 is used for monitoring the inner water level and the outer water level in the blocking area 13.
As shown in fig. 2, when the inner water level is continuously lower than the outer water level for more than a preset first time period, the water level monitoring unit 1 generates a first water level adjusting signal, and the water level control unit 2 is configured to pump external ground water from outside the blocking region 13 to fill the blocking region 13 according to the first water level adjusting signal, so as to reduce the water level difference between the inner water level and the outer water level.
As shown in fig. 3, when the inner water level is continuously higher than the outer water level for more than a preset second duration, the water level monitoring unit 1 generates a second water level adjusting signal, and the water level control unit 2 is configured to extract the inner groundwater from the blocking region 13 and discharge the groundwater to the outside of the blocking region 13 according to the second water level adjusting signal, so as to reduce the water level difference between the inner water level and the outer water level.
In an alternative, to avoid frequent water level adjustments, the water level adjustments are made only when the inner water level continues to be below the outer water level for more than a preset first period of time or when the inner water level continues to be above the outer water level for more than a preset second period of time. The preset first duration and the preset second duration may be the same duration or different durations, for example, in this embodiment, both the preset first duration and the preset second duration may be set to 48 hours, or may also be set according to actual conditions, for example, in rainy season, in order to adjust the internal water level of the blocking area as soon as possible to avoid a large amount of rainwater from gathering, the preset first duration may be appropriately shortened to speed up the water level adjustment, and at this time, the preset second duration is also adjusted accordingly.
In an alternative embodiment, the groundwater contamination barrier system further comprises an inner monitoring well 7 arranged inside the barrier zone 13 and an outer monitoring well 8 arranged outside the barrier zone 13, wherein the number of the inner monitoring well 7 and the outer monitoring well 8 is more than one, and at least one outer monitoring well is arranged around each face of the barrier zone 13, for example the number of the outer monitoring wells 8 outside the barrier zone is 4 as shown in fig. 4; the internal monitoring wells 7 can also be set according to the size of the blocking area 13, for example, the number of the internal monitoring wells 7 shown in fig. 4 is 5, and the specific number can be flexibly adjusted according to actual conditions.
The groundwater level self-control blocking system of the embodiment further comprises a purification unit 3, the water level monitoring unit 1 comprises a plurality of water level monitors 12, at least one water level monitor 12 is arranged in the internal monitoring well 7, and at least one water level monitor 12 is arranged in the external monitoring well 8, so that the number of the water level monitors 12 is related to the number of the internal monitoring wells 7 and the external monitoring wells 8, namely, one water level monitor 12 can be configured for each internal monitoring well 7 and each external monitoring well 8.
The purification unit 3 is used for purifying the internal ground water extracted from the barrier region 13 to obtain purified water and storing the purified water into the first storage tank 5, and the water level control unit 2 is further used for extracting the purified water from the first storage tank 5 according to the second water level adjustment signal and discharging the purified water out of the barrier region 13 so as to reduce the water level difference between the inner water level and the outer water level, and in an optional embodiment, the purification unit 3 comprises a water purifier. The embodiment pumps the underground water to adjust the water level, and the polluted underground water is purified by the purification unit in the pumping process, so that the remediation of the underground water pollution is realized to a certain extent.
The water level control unit 2 is also used for extracting rainwater from the rainwater storage pool 6 according to the first water level adjusting signal to pour the rainwater into the blocking area 13 so as to reduce the water level difference between the inner water level and the outer water level, adjusting the inner water level by adopting the rainwater, reducing the extraction of external underground water and effectively avoiding the settlement of the external ground.
In a preferred embodiment, the water level monitoring unit 1 is further configured to determine a water level difference between the inner water level and the outer water level, specifically, when the inner water level is lower than the outer water level and the water level difference between the inner water level and the outer water level is continuously greater than a preset first water level difference and exceeds a preset first time period, the water level monitoring unit 1 generates a first water level adjustment signal, and when the water level difference between the inner water level and the outer water level is smaller than a preset third water level difference or when the inner water level and the outer water level are equal, external groundwater is stopped being extracted from outside the blocking area and poured into the blocking area; when the inner water level is higher than the outer water level and the water level difference between the inner water level and the outer water level is continuously larger than the preset second water level difference and exceeds the preset second duration, the water level monitoring unit 1 generates a second water level adjusting signal, and when the water level difference between the inner water level and the outer water level is smaller than the preset fourth water level difference or when the inner water level and the outer water level are equal, the internal groundwater is stopped being extracted from the blocking area and discharged to the outside of the blocking area.
The water level control unit 2 extracts rainwater from the rainwater storage pool 6 according to the first water level adjustment signal and injects the extracted rainwater into the internal monitoring well 7, and if all the rainwater in the rainwater storage pool 6 is injected into the blocking area 13, the internal water level is still lower than the external water level, external underground water is extracted from the external monitoring well 8 and injected into the blocking area 13, so that the water level difference between the internal water level and the external water level is smaller than a preset third water level difference or the internal water level is equal to the external water level.
The water level control unit 2 extracts purified water from the first storage pool 5 according to the second water level adjustment signal and discharges the purified water to the outside of the blocking area 13, and if all the purified water in the first storage pool 5 is injected to the outside of the blocking area 13, the inner water level is still higher than the outer water level, the internal underground water is continuously extracted from the internal monitoring well 7, purified by the purification unit 3 and then discharged to the outside of the blocking area 13, so that the water level difference between the inner water level and the outer water level is smaller than a preset fourth water level difference or equal to the outer water level.
The preset first water level difference and the preset second water level difference in this embodiment may be the same water level difference or different water level differences, and the preset third water level difference and the preset fourth water level difference may be the same water level difference or different water level differences, for example, in this embodiment, the preset first water level difference and the preset second water level difference may be set to be 1 meter, and the preset third water level difference and the preset fourth water level difference may be set to be 0.1 meter, and of course, those skilled in the art may set these values according to actual situations.
In this embodiment, the water level monitoring unit 1 further determines the water level difference between the inner water level and the outer water level on the basis that the inner water level is continuously lower than or higher than the outer water level for a predetermined time period, so that the water level monitoring unit generates the water level adjusting signal more accurately.
This embodiment is through setting up the water level monitoring unit who is used for monitoring interior water level and outer water level in separation district and the water level control unit who is used for adjusting interior water level and outer water level according to water level control signal, effectively controlled inside and outside water pressure balance, reduced groundwater pressure to the destruction of separation system, prolonged the life of separation system, guaranteed the stability of separation system.
In an alternative, as shown in fig. 5 and 6, the exposed ground surface in the barrier area 13, the first storage pool 5 and the rainwater storage pool 6 are both paved with a material with a waterproof barrier function to form a bottom waterproof layer 11, and the barrier wall 4 may be a wall body made of a material with a waterproof barrier function, which can be selected by those skilled in the art according to actual conditions, in this embodiment, the bottom waterproof layer 11 is a HDPE (high density polyethylene resin) geomembrane (a waterproof barrier type material produced by using a high density polyethylene resin as a raw material), and the barrier wall 4 is an embedded HDPE geomembrane cement soil wall.
In an alternative mode, the first storage pool 5 is additionally provided with a cover film 10, so that pollutants can be effectively prevented from being diffused through air; the rainwater storage pool 6 is further provided with an overflow port 9, after the rainwater storage pool 6 is full of storage, redundant rainwater flows out through the overflow port 9, wherein the number of the overflow ports 9 can be flexibly adjusted according to actual conditions, for example, in the embodiment, each rainwater storage pool 6 is provided with one overflow port 9.
In an alternative, the internal monitoring well 7 is used to monitor the ground water level within the barrier zone 13, acting as a water injection well when the internal water level is lower than the external water level, and as a water pumping well when the internal water level is higher than the external water level; the external monitoring well 8 is used for monitoring the underground water level outside the blocking area 13, and when the internal water level is lower than the external water level and the collected rainwater cannot meet the water quantity requirement, the external monitoring well can be used as a pumping well to supplement the underground water in the blocking area 13.
The groundwater contamination barrier system of the present embodiment is applied to the following cases:
(1) the water level in the blocking area 13 is lower than the outer water level
The situation generally occurs in rainy season, the earth surface of the area 13 of the separation area is covered with a layer of geomembrane, rainfall is difficult to permeate into the underground water layer inside the separation area 13, and the underground water level outside the separation area 13 rises along with the rainfall, so that the water level inside the separation area 13 is lower than the external water level. The inside precipitation of separation district 13 is collected to rainwater holding vessel 6, and rainwater holding vessel 6 is full of the back, and unnecessary rainwater is discharged to the outside through overflow mouth 9. Specifically, the water level monitoring unit 1 detects that the internal and external water levels are continuously lower than the external water level within 48 hours, and the internal and external water level difference is continuously greater than 1 meter, then a first water level adjusting signal is generated, and the water level control unit 2 injects rainwater in the rainwater storage pool 6 into the internal monitoring well 7 according to the first water level adjusting signal. If the rainwater storage pool 6 can not meet the recharge quantity, external underground water is pumped to the internal monitoring well 7 through the external monitoring well 8, and finally the water power balance inside and outside the blocking area 13 is achieved.
(2) The water level in the blocking area 13 is higher than the outer water level
This situation generally occurs in dry seasons, where the earth surface of the barrier region 13 is covered with a geomembrane, the amount of underground water in the region is less lost by transpiration, and the water level of external underground water is lowered by supplying external surface water and transpiration, resulting in the water level in the barrier region 13 being higher than the external water level. Specifically, the water level monitoring unit 1 detects that the internal and external water levels are continuously higher than the external water level within 48 hours, and the internal and external water level difference is continuously greater than 1 meter, then a second water level adjusting signal is generated, the water level control unit 2 pumps the internal groundwater out according to the second water level adjusting signal, and the groundwater is discharged into the first storage pool 5 after being treated by the purification unit 3. If first reservoir 5 can not satisfy the volume of taking out, inside groundwater is taken out each other through between first reservoir 5 and is annotated, and the circulation is handled through purification unit 3, handles to discharge outside after the monitoring is up to standard through the certain time, finally realizes that the internal and external water balance in separation region 13.
Because the underground water outside the blocking area is open and is influenced by natural factors such as water supply, precipitation and the like, and manual intervention is difficult, the internal and external water level difference is regulated and controlled by pumping/recharging the internal and external underground water of the blocking area through the underground water pollution blocking system of the embodiment, the internal and external water pressure balance of the blocking area is realized, the damage of the underground water pressure to the blocking wall body is effectively reduced, and the service life of the blocking wall is prolonged; by collecting rainwater and adjusting the internal water level by adopting rainwater, the pumping of external underground water is reduced, and the external ground is effectively prevented from settling; the first storage pool is additionally provided with a cover film, so that pollutants are effectively prevented from being diffused through air; the purification unit purifies the polluted underground water inside, and the pollution remediation of the underground water is realized to a certain extent.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. The underground water level self-control blocking system is characterized by comprising a water level monitoring unit and a water level control unit;
the water level monitoring unit is used for monitoring an inner water level in a blocking area and an outer water level outside the blocking area, the inner water level is continuously lower than the outer water level and exceeds a preset first time length to generate a first water level adjusting signal, and the inner water level is continuously higher than the outer water level and exceeds a preset second time length to generate a second water level adjusting signal;
the water level control unit is used for extracting external underground water from the outside of the blocking area according to the first water level adjusting signal and injecting the external underground water into the blocking area so as to reduce the water level difference between the inner water level and the outer water level;
the water level control unit is also used for extracting internal underground water from the blocking area according to the second water level adjusting signal and discharging the internal underground water to the outside of the blocking area so as to reduce the water level difference between the internal water level and the external water level.
2. A groundwater level self-controlling barrier system as claimed in claim 1, wherein the system further comprises a purification unit for purifying internal groundwater drawn from within the barrier zone to obtain purified water and storing the purified water in a first storage pond;
the water level control unit is also used for extracting the purified water from the first storage pool according to the second water level adjusting signal and discharging the purified water to the outside of the blocking area so as to reduce the water level difference between the inner water level and the outer water level.
3. The groundwater level self-controlling blocking system according to claim 1, wherein the water level control unit extracts rainwater from the rainwater storage tank to be injected into the blocking region according to the first water level adjusting signal, and extracts the external groundwater from outside the blocking region to be injected into the blocking region so that a difference between the water levels is reduced if the internal water level is still lower than the external water level when all of the rainwater in the rainwater storage tank is injected into the blocking region.
4. The groundwater level self-control blocking system according to claim 2, wherein the water level control unit extracts the purified water from the first reservoir to be discharged outside the blocking region according to the second water level adjustment signal, and if the inner water level is still higher than the outer water level when all the purified water in the first reservoir is injected outside the blocking region, the internal groundwater is continuously extracted to be purified by the purification unit and then discharged outside the blocking region, so that the water level difference between the inner water level and the outer water level is reduced.
5. A groundwater level self-controlling barrier system as claimed in claim 1, wherein the water level monitoring unit comprises a plurality of water level monitors, at least one of the plurality of water level monitors being disposed in an inner monitoring well and at least one of the plurality of water level monitors being disposed in an outer monitoring well;
the external monitoring well is arranged outside the blocking area, and the internal monitoring well is arranged in the blocking area;
extracting external groundwater from outside the blocked zone includes extracting external groundwater from the external monitoring well, and extracting internal groundwater from within the blocked zone includes extracting internal groundwater from the internal monitoring well.
6. The groundwater level self-control barrier system as claimed in claim 1, wherein the water level monitoring unit generates the first water level adjustment signal when the inner water level is lower than the outer water level and the water level difference between the inner water level and the outer water level continues to be greater than a preset first water level difference for more than the preset first time period;
and/or the presence of a gas in the gas,
and when the inner water level is higher than the outer water level and the water level difference between the inner water level and the outer water level is continuously larger than a preset second water level difference and exceeds the preset second duration, the water level monitoring unit generates the second water level adjusting signal.
7. The groundwater level self-control blocking system according to claim 1, wherein the water level control unit is further configured to stop the external groundwater from being pumped out of the blocking area to be injected into the blocking area when the water level difference between the internal water level and the external water level is less than a preset third water level difference or when the internal water level is equal to the external water level
And/or the presence of a gas in the gas,
the water level control unit is also used for stopping extracting internal underground water from the blocking area and discharging the internal underground water to the outside of the blocking area when the water level difference between the inner water level and the outer water level is smaller than a preset fourth water level difference or when the inner water level is equal to the outer water level difference.
8. An underground water pollution prevention system, characterized in that the underground water pollution prevention system comprises the underground water level self-control prevention system as claimed in any one of claims 1 to 7, and the underground water pollution prevention system further comprises a prevention area surrounded by a prevention wall inserted into an underground watertight layer along the edge of the pollution area;
inside groundwater is stored in the blocking area, and outside groundwater is stored outside the blocking area.
9. The groundwater contamination barrier system of claim 8, further comprising a first storage tank disposed in the barrier region, the first storage tank being for storing purified water;
and/or the presence of a gas in the gas,
the underground water pollution blocking system also comprises a rainwater storage pool arranged in the blocking area, and the rainwater storage pool is used for collecting and storing rainwater;
and/or the presence of a gas in the gas,
the groundwater pollution blocking system further comprises an inner monitoring well arranged in the blocking area and an outer monitoring well arranged outside the blocking area.
10. The groundwater contamination barrier system of claim 9, wherein the exposed surface of the earth in the barrier region, the first reservoir and the rainwater reservoir are all paved with a material having a waterproof barrier function to form a bottom waterproof layer;
and/or the presence of a gas in the gas,
a covering film is additionally arranged in the first storage pool;
and/or the presence of a gas in the gas,
the rainwater storage pool is provided with an overflow port, and when the rainwater storage pool is full of storage, redundant rainwater flows out through the overflow port.
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| CN202110614566.3A CN113483846B (en) | 2021-06-02 | 2021-06-02 | Groundwater water level self-control separation system and groundwater pollution separation system |
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| CN202110614566.3A CN113483846B (en) | 2021-06-02 | 2021-06-02 | Groundwater water level self-control separation system and groundwater pollution separation system |
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| GB1056630A (en) * | 1964-10-23 | 1967-01-25 | Vmw Ranshofen Berndorf Ag | Liquid container for mounting in the ground |
| CN203049553U (en) * | 2013-01-31 | 2013-07-10 | 中国水电顾问集团贵阳勘测设计研究院 | Reservoir surface layer water discharging structure |
| CN205711965U (en) * | 2016-06-24 | 2016-11-23 | 广西壮族自治区水利电力勘测设计研究院 | A kind of karst area enclose well construction |
| CN110206129A (en) * | 2019-06-28 | 2019-09-06 | 南京泽辉环保科技有限公司 | A kind of temporarily isolating buffer system of sewage |
| CN210151818U (en) * | 2019-02-26 | 2020-03-17 | 宁波市轨道交通集团有限公司建设分公司 | Groundwater recharge control assembly and recharge system |
| CN111807492A (en) * | 2020-06-05 | 2020-10-23 | 上海市政工程设计研究总院（集团）有限公司 | NAPL pollution remediation system and method in underground water based on pollution prevention and control |
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2021
- 2021-06-02 CN CN202110614566.3A patent/CN113483846B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1056630A (en) * | 1964-10-23 | 1967-01-25 | Vmw Ranshofen Berndorf Ag | Liquid container for mounting in the ground |
| CN203049553U (en) * | 2013-01-31 | 2013-07-10 | 中国水电顾问集团贵阳勘测设计研究院 | Reservoir surface layer water discharging structure |
| CN205711965U (en) * | 2016-06-24 | 2016-11-23 | 广西壮族自治区水利电力勘测设计研究院 | A kind of karst area enclose well construction |
| CN210151818U (en) * | 2019-02-26 | 2020-03-17 | 宁波市轨道交通集团有限公司建设分公司 | Groundwater recharge control assembly and recharge system |
| CN110206129A (en) * | 2019-06-28 | 2019-09-06 | 南京泽辉环保科技有限公司 | A kind of temporarily isolating buffer system of sewage |
| CN111807492A (en) * | 2020-06-05 | 2020-10-23 | 上海市政工程设计研究总院（集团）有限公司 | NAPL pollution remediation system and method in underground water based on pollution prevention and control |
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