JPH0688327A - Stratified pumping injection device for well - Google Patents

Abstract

PURPOSE:To control a flow rate of each pumping water and injection water with an on/off volume of each packer valve and enhance construction efficiency and reduce construction cost by feeding water pumped up with a pumping water barrier packer and injecting the water from an injection water barrier packer. CONSTITUTION:From a pumping service water storing stratums 2, 3 a pumping water barrier packer 20 feeds pumping water into a pumping water injection device 10 by way of a well pipe 6 and introduces collected water to an injection service water storing packer 30. The flow rate of intake spring water is adjusted by controlling the opening degree of valves 23 and 24 from the ground side. Then, the injection water service water barrier packer 30 injects water stored in the packer 30 into the well pipe 6 by means of valves 33 and 34 and the water is supplied to a water storing stratum 4 or 5 by way of a filter 8 and a screen 8'. The flow rate of infection water is adjusted by controlling the opening degree of the valves 33 and 34 from the ground side. This construction makes it possible to pump up and inject water with the single well pipe 6 per layer and facilitate the positioning of the water storing stratums 2 to 5 intended with each of the valves 23, 24, 33 and 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stratified pumping water injection device for a well installed in a well constructed on a ground having a plurality of aquifers and for pumping or pouring water into the aquifers layer by layer. Regarding

[0002]

2. Description of the Related Art Conventionally, in a ground having a plurality of aquifers, when pumping water into each of the aquifers layer by layer, stratification is performed in a well provided in the ground. It was necessary to install a pumping device and to provide a water injection well for injecting water pumped from the aquifer to the ground separately from the pumping well. However, in the case of the stratified pumping water injection device for wells as described above, it is necessary to excavate two wells, and many sites must be secured, and the construction period is extended and construction costs are increased. There were various problems. Further, since the water injection well is configured to be able to inject water into an aquifer suitable for the stratified water pumping device, it is necessary to limit the aquifer compatible with the pumping side at a position apart from the pumping side. Because of that, the construction is difficult.

The present invention has been made in view of the above-mentioned problems, and enables both layer-wise pumping and layer-wise water injection with a single well to realize improvement of construction efficiency and reduction of construction cost. The purpose of the present invention is to provide a stratified pumped water injection device capable of performing well.

[0004]

According to the invention of claim 1, in a well excavated in a ground having a plurality of aquifers,
Among the plurality of aquifers, at the desired position of the aquifer for pumping, a water-impervious packer for pumping that stops the water between the other formations with a waterstop is arranged, and the aquifer for water injection A water impervious packer for stopping water from other geological formations with a water stop is placed at a desired position, and the water impervious packer for pumping water is used for pumping water by adjusting the flow rate of spring water from the aquifer for pumping water. A valve that allows the water to flow into the water-impermeable packer and one end of an introducing means that introduces the water that has flowed into the water-impermeable packer into the water-impermeable packer are provided. The other end of the introducing means for introducing the water of the pumping aquifer flowing into the water packer into the inside is provided, and the water introduced into the packer is injected into the water injecting aquifer by adjusting the flow rate. A layered pumped water injection device for wells characterized in that a valve is provided to solve the above problems. It was the stage.

According to a second aspect of the present invention, there is provided the stratified pumping water injection device for a well according to the first aspect, wherein the flow rate of the outflow water from the pumping aquifer is adjusted in the pumping impermeable packer. A pump for supplying and introducing the inflowing water upward and a pumping pipe for pumping the inflowing water upward are additionally provided, and a stratified pumping water injection device for wells, which is characterized in that Was used as a means for solving the above problems.

According to a third aspect of the present invention, a pumping region having one or more aquifers for pumping, and a region below the pumping region,
A stratified pumping apparatus for pumping or pouring water to the aquifer, which is installed in a well excavated in the ground having a pouring region having two or more aquifers for pouring, In the well, a water-impervious packer for water pumping, which has a water stop between the other layers, is placed at a desired position of the aquifer for water pumping among the plurality of aquifers. In the packer, a valve for adjusting the flow rate of the spring water from the pumping aquifer to flow into the pumping water impervious packer, and an introducing means for introducing the water that has flowed into the packer into the water injection impervious packer One end is provided,
In the water injection area, the other end of the introduction means for introducing the water of the pumping aquifer, which has flowed into the pumping impermeable packer into the inside, one water injection layer and another water injection water A water stop panel for stopping water between the layers, a water guiding channel and a valve for guiding the flow rate of the water introduced by the introducing pipe and the pump to the one water injection aquifer, and the flow rate of the water. A layered pumped water injection device for a well, which is provided with a water conduit and another valve for leading to the other water injection aquifer as described above, is a means for solving the above problems.

According to a fourth aspect of the present invention, there is provided the stratified pumping water injection device for a well according to the third aspect, wherein the flow rate of the spring water from the pumping aquifer is adjusted to the pumping water impermeable packer. A pump for supplying and introducing the inflowing water upward and a pumping pipe for pumping the inflowing water upward are additionally provided, and a stratified pumping water injection device for wells, which is characterized in that Was used as a means for solving the above problems.

According to a fifth aspect of the present invention, there is provided the stratified pumping water injection device for a well according to the first or second aspect, which is capable of pumping at least the water injected by the introducing means into the water-impermeable packing packer. A stratified pumping water injection device for a well, which is provided with a region pumping pump and a pumping pipe, is used as a means for solving the above problems.

According to a sixth aspect of the present invention, in the well-layered pumped water injection device according to the third or fourth aspect, water is injected by at least an introducing means between the water impervious packer for pumping water and the water stop board. A stratified pumping water injection device for a well, which is provided with a pump for pumping water and a pumping pipe for pumping water, is a means for solving the above problems.

[0010]

According to the stratified well pumping water injection device according to the first aspect, the interior of the well is partitioned in the vertical direction into spaces corresponding to the respective aquifers of the ground by bringing the water stop body into close contact with the inner wall surface of the well. In the above-mentioned state, if the valve of the water-impermeable packer for pumping water is opened by an appropriate amount, the spring water flowing from the aquifer flowing into the partitioned space flows into the packer at the target flow rate through the valve. . The water that has flowed into the water impervious packer for pumping is introduced into the water impervious packer through the introducing means.
In the water-impervious packer for water injection, the flow rate of water injection to the aquifer for water injection is adjusted by adjusting the water injection amount of the introduction means and the opening amount of the valve.

According to the stratified pumping water injection device for a well according to claim 2, in addition to the function of the stratified pumping water injection device for a well according to claim 1, the pumping pump for pumping the water flowing into the inside of the packer is provided. Water is pumped to the ground via a water pump to increase the pumping volume of the equipment.

According to the stratified pumping water injection device for a well according to claim 3, the water in the pumping aquifer is introduced into the pumping impermeable packer through the valve and then injected through the introducing means. The water is guided to the area direction and is divided into a water guiding flow path, and water is injected into each water injection aquifer at a desired flow rate through each water guiding flow path and a valve attached to the water guiding flow path.

According to the stratified pumping water injection device for a well described in claim 4, in addition to the function of the stratified pumping water injection device for a well according to claim 3, the pumping pump for pumping the water flowing into the inside of the packer is provided. Water is pumped to the ground via a water pump to increase the pumping volume of the equipment.

According to the stratified pumping water injection device for a well according to claim 5, in the water-impermeable packing packer, at least the water guided by the introducing means is pumped up by the pump for pumping the water in the injection area, and the opening of the introducing means is opened. The water flow velocity of the water is increased to prevent the clogging of the opening and the accumulation of mud in the vicinity of the opening.

According to the well-layered pumping water injection device of claim 6, the water between the water-impermeable packing packer and the water stop plate is pumped by the pump for pumping the water in the water-injection region, and the water is injected at the opening of the introducing means. The flow velocity is increased to prevent the accumulation of mud in the opening and the vicinity of the opening.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. In the figure, reference numeral 1 is the ground, 2, 3, 4, 5
Is the first, second, third, and fourth aquifers, 6 is a well tube, 10
Is a layered pumped water injection device of the well of the present embodiment, 11 is a water stop body,
Reference numeral 12 is a water pressure gauge, 13 is a connecting body (introducing means), 20 is a water blocking packer for pumping water, 21 is a pump for pumping water, 22 is a pumping pipe, 3
0 is an impervious packer for water injection, 31 is a water injection pump (introduction means), 32 is a water injection pipe (introduction means), 23, 24, 33,
Reference numeral 34 denotes first, second, third and fourth valves.

The ground 1 has a plurality of impermeable soil layers 7 which are separated from each other and extend in the horizontal direction, and the impermeable soil layers 7,
It is composed of aquifers 2, 3, 4, and 5 formed between 7. The well pipe 6 is a cylindrical wall body made of reinforced concrete constructed on the wall surface of an excavation hole formed by vertically excavating the ground 1, and filters at desired positions of the aquifers 2, 3, 4, and 5. 8 and a screen 8'are provided. In the vicinity of the impermeable soil layer 7 existing between the aquifers, a water shield 7 ′ made of grout or the like is provided.

As shown in FIG. 1, the pumped water injection device 10 includes
In a well excavated in the ground 1 having a plurality of aquifers 2, 3, 4, 5 for pumping, which is located above the ground 1 among the plurality of aquifers 2, 3, 4, 5 A water impregnation packer 20 for pumping which is arranged at a desired position of the aquifers 2, 3 and an aeration water for pouring which is attached immediately below the water impregnation packer 20 for pumping and which is located under the aquifers 2, 3 It is composed of a water-impervious packer 30 placed at a desired position of the layers 4 and 5. The water injection pipe 32 shown by a chain line in the figure has a structure such that the water of the aquifers 2, 3 for pumping to the impervious packer 20 for pumping water is guided to the pump 31 for water injection. Further, for the same purpose, the water impregnation packer 20 for pumping water and the water impregnation packer 30 for water injection may be directly connected, and in this case, the water injection pipe 32 shown in the figure is not necessary.

The water impervious packer 20 for pumping water pumps a pump 21 and a pump 22 for pumping groundwater in the aquifers 2 and 3, and discharges water from the pumping aquifers 2 and 3 respectively. It is provided with first and second valves 23 and 24 which are adjusted to flow into the pumping water impermeable packer 20. The main body of the water-impermeable packer 20 for pumping water is a hollow columnar body formed of a watertight material, and is vertically positioned at a desired position of the impermeable soil layers 7, 7 extending above and below the aquifer 2. A water shut off body 11 is provided to shut off the flow of water. Each water stop body 11 is a bag made of a ring-shaped rubber or the like that surrounds the outer circumference of the pumped-water injection device 10, and is filled with a fluid such as water or air to expand the inside of the well tube 6. It is in close contact with the inner wall surface and vertically shields the interior of the well pipe 6.

The pumping pump 21 and the pumping pipe 22 are inserted in a state where the lower end of the pumping pipe 22 is fished down from the ground to the bottom of the pumping impermeable packer 20 to lift the pumping aquifers 2, 3
The water that has flowed into the main body of the pumping water impermeable packer 20 is sucked from the valves 23 and 24, and the water is pumped upward. Therefore, the pump 21 for pumping water and the pumping pipe 22
Indicates that the flow rate of water injection from the aquifers 2 and 3 for pumping to the aquifers 4 and 5 for water injection is the impervious packer 20 for pumping and the impervious packer 30 for pouring.
When the flow rate is higher than that of the connection body (introducing means) 13 that connects the water supply with the connection body (introduction means) 13, or the amount of pumped water from the pumping aquifers 2 and 3 is 4 If there is a large amount of water to be injected into 5, pump from the aquifers 2 and 3 for pumping,
The pumping capacity of the pumped water injection device 10 is assisted.

First valve 23 and second valve 24
Are configured to open at desired positions of the aquifer 2 or the aquifer 3 for pumping, respectively, and the opening amount can be adjusted from the ground. In addition, the first valve 23 and the second valve 24
Has an opening position between the water stop bodies 11 above and below or above and below the water stop body 11 attached to the upper part of the water-impermeable packer 20 for pumping water, and springs out from the aquifer 2 or the aquifer 3. When the water is accumulated between the inner wall of the well pipe 6 and the pumping water impermeable packer 20 with the water stop body 11 as the bottom and the water level rises, the water flows into the pumping water impermeable packer 20.
Directly above the first valve 23 and the second valve 24,
A water pressure gauge 12 for detecting the water level of the accumulated water is attached. The whole of the pumping water impermeable packer 20 for pumping is hollow, including the lower end, and the pumped water is introduced by its own weight into the lower water impregnating water packer 30 through the connecting body 13. The structure is as shown. Note that the fluid sealed in the water blocking body 11 may be mixed with earth and sand as long as the target capability is satisfied. Further, the water blocking body 11 may be another member such as a plate material as long as it blocks water in the well pipe 6 in the vertical direction.

The water impervious packer 30 has a water injecting pump 31 and a water injecting pump 31 for introducing water from the aquifers 2 and 3 for pumping, that is, water for injecting water from above. The water injection pipe 32 is provided, and the packer 3 is provided.
There are provided third and fourth valves 33 and 34 for adjusting the flow rate of the water introduced into 0 into the aquifers 4 and 5 for water injection. The main body of the water impervious packer 30 is a hollow columnar body formed of a watertight material, at a desired position of the impermeable soil layer 7 extending between the aquifers 4 and 5. A water stop body 11 is provided to block the flow of water in the vertical direction. Further, the main body of the water impervious packer 30 for water injection is formed to be vertically continuous with the main body of the water impervious packer 20 for pumping water, and water communicates with the main body of the water impermeable packer 20 for pumping inside. A hollow connecting body 13 is provided.

Third valve 33 and fourth valve 34
Are configured to open at desired positions of the aquifer 4 and the aquifer 5, respectively, and have an adjustable opening amount from the ground.
In addition, the third valve 33 and the fourth valve 34 have opening positions that are vertically separated from each other with the water blocking body 11 interposed therebetween, so that water that has been poured into each other does not flow in the opposite direction. There is. The water pressure gauge 12 for detecting the water level of the accumulated water is attached just above the third valve 33 and just below the fourth valve 34. The pumped water injection device 10 is held in a state of being suspended from the ground via suspension wires 14, and each water stop body 11 is brought into close contact with the inner wall surface of the well pipe 6 so that the inside of the well pipe 6 is closed. It is set stationary at the target position.

The operation and terms or effects of this embodiment will be described below. The pumped-water injection device 10 of the present embodiment has a form in which a water-impermeable packer 20 for pumping water and a water-impermeable packer 30 for water injection are vertically connected in the well pipe 6, and the space in the well pipe 6 is made of impermeable soil. Since the water blocking body 11 blocks water at the desired position of layer 7,
Pumping water to the aquifers 2 and 3 and water injection to the aquifers 4 and 5 can be performed by one well, and pumping or water injection can be independently performed for each aquifer.

That is, according to the pumped water injection device 10, the water that has sprung from the aquifers 2, 3 to the inside of the well pipe 6 is transferred to the pumping impermeable packer 20 by the first valve 23 or the second valve 2.
The water is introduced into the inside of the main body via 4 and the collected water is introduced into the water impregnating packer 30 via the connecting body 13. The intake flow rate of the spring water from the pumping aquifers 2 and 3 to the inside of the pumping impervious packer 20 for pumping is first controlled by the ground.
It is adjusted by controlling the opening amount of the valve 23 or the second valve 24. On the other hand, water-impervious packer 30 for water injection
Is the third water supplied from the ground through the water injection pump 31 and the water injection pipe 32 and stored in the water injection impervious packer 30.
Through the valve 33 or the fourth valve 34 of FIG.
The water is supplied to the aquifer 4 or the aquifer 5 through the filter 8 and the screen 8 ′ by injecting water into the space inside the well pipe 6 surrounded by the water stop body 11 of 0. The flow rate of water injection into the aquifer 4 or the aquifer 5 is adjusted by controlling the opening amount of the third valve 33 or the fourth valve 34 from the ground, respectively.

Therefore, the pumped water injection apparatus 10 of this embodiment
Is capable of pumping or pouring water at different flow rates for each of the four aquifers with one well pipe 6, so there is no need to construct multiple well pipes 6 in the ground 1, The water injection cost can be greatly reduced, and it is easy to accurately position each valve in a desired aquifer at the desired position, which improves the construction efficiency. Moreover, since the water pumped from the aquifers 2 and 3 for pumping is used for injecting water to the aquifers 4 and 5 for pouring, there is no need for water to come out to the ground or to transfer water from the ground, so that sewage treatment is possible. It is effective for cost reduction and environmental protection. In addition, if the pump 21 for pumping water and the pumping pipe 22 are provided, the pumping capacity can be enhanced by pumping water from the aquifers 2 and 3 for pumping. When the flow rate of water injected to the water layers 4 and 5 is higher than the water flow rate of the connector 13, or the amount of water pumped from the aquifers 2 and 3 for pumping is the amount of water injected to the aquifers 4 and 5 for water injection. On the other hand, it is possible to deal with a large number of cases and the versatility of the pumped water injection device 10 is improved.

In this embodiment, a large number of water blocking bodies 11 and valves of the water impregnating packer 20 for pumping water or the water impregnating packer 30 for water injection may be provided to form a form corresponding to more aquifers. . In the above case, each valve has a water blocking body 11
Also, the well pipes 6 are provided separately in a space that is partitioned in a watertight manner. Further, conversely to the above, the number of valves and the water blocking body 11 of the water impervious packer 20 for pumping water or the impervious packer 30 for water injection is reduced,
It may be configured to have a small number of corresponding aquifers.

In addition, as shown in FIG. 2, the pumped-water injection device 10 is provided with a pump 40 for pumping water and a pump pipe 41 for pumping water in the inner space of the main body of the water-impermeable packer 30 for water-injection. By pumping the water in the main body, the pumping amount from the pumping aquifers 2 and 3 can be increased, and the pumping flow rate from the pumping pump 31 can be increased to pump the pumping water 3
To prevent clogging of the filter attached to the opening of No. 1 and accumulation of sediment such as sediment around the opening to extend the period of cleaning the inside of the well pipe 6 and prevent breakdown of pumps, etc. effective.

A second embodiment of the present invention will be described below with reference to FIG. Reference numeral 50 in the figure is a stratified pumped water injection device for a well according to the present embodiment. In the figure, the same components as those in FIG. 1 are designated by the same reference numerals to simplify the description.
The pumped-water injection device 50 is composed of a water-impermeable packer 60 for pumping water in the aquifers 2 and 3, and a water injection control body 70 that injects water into the aquifers 4 and 5.

A pumping pump 60 for pumping water is a form in which a pump for pouring water is attached to the lower part of the packing pack 20 for pumping water, and a pump 61 for pumping water having the same action as the pump 21 for pumping water and the pumping pipe 22. And a pumping pipe 62, a fifth valve 63 and a sixth valve 64 which are provided in such a manner as to open at desired positions of the aquifers 2 and 3, and a water injection pump (introducing means) 65 provided at the lower end. Be prepared. In the main body of the water-impermeable packer 60 for pumping water, a water stop body 11 for vertically shielding the inner space of the well pipe 6 at the position of each impermeable soil layer 7 is provided at the same position as the water-permeable packer 20 for pumping water. It is provided.

The water injection pump 65 is a water impregnating packer 6 for pumping water.
At the lower end of 0, the upper part is attached as a buried state in the main body of the pumping water impermeable packer 60, and an opening is formed in the space formed between the pumping water impermeable packer 60 and the water injection control body 70. It is provided so as to project downward, and the water collected by the pumping water impermeable packer 60 is supplied to the water injection control body 70. Further, a water injection pipe (introducing means) 66 having the same action as the water injection pipe 32 is inserted above the water injection pump 65. Further, at the upper edge portion of the water injection pump 65, a connection body (introduction means) that intercepts water other than the intake port of the pump and collects the water flowing into the pumping water impregnation packer 60 into the water injection pump 65. ) 67 is attached. The water impervious packer 60 for pumping water is provided with a water stop body 11, a water pressure gauge 12, and a suspension wire 14 at positions substantially corresponding to those of the water impermeable packer 20 for pumping water. In addition, the space formed between the water-impermeable packer 60 for pumping water and the water injection control body 70 is desired by the impermeable soil layer 7 and is surrounded by the water-impervious body 7 ′. There is no water leak.

The water injection control body 70 is provided in the cross-sectional direction of the well pipe 6 to vertically shield the well pipe 6, and below the first water stop plate 71, the first water stop plate 71 is provided. Water stop 7
The second water stop plate 72 provided in parallel with the first water stop plate 71 and the first water stop plate 71 penetrating in the thickness direction of the first water stop plate 71 to inject water from the water injection pump 65 into the first water stop plate 71 and the second water stop plate. A seventh valve 73 for supplying a space between the second water stop plate 72 and a water introducing pipe that penetrates in the thickness direction of the second water stop plate 72 and supplies the water injection to the space below the second water stop plate 72 ( A water guiding channel) 74 and an eighth valve 75 are provided.

The first water stop board 71 is provided at a desired position of the impermeable soil layer 7 extending between the aquifers 3 and 4. The second water stop board 72 includes the aquifer 4 and the aquifer 5 for water injection.
It is provided at the desired position of the impermeable soil layer 7 extending between the. Then, between the first water stop board 71 and the second water stop board 72, the water desired in the aquifer 4 is passed between the inside and outside of the well tube 6 via the filter 8 of the well tube 6 and the screen 8 ′. It forms a space that communicates freely. In addition, the second water stop board 7
The well pipe 6 formed below 2 is also formed in a space where water desired for the aquifer 4 is freely communicated with the inside and outside of the well pipe 6 through the filter 8 and the screen 8 ′. The water pressure gauge 12 for measuring the water pressure at the lowermost portion of the well pipe 6 is provided below the second water stop board 72 in a protruding manner. Water conduit 74
Is pierced through the first water stop board 71 and the second water stop board 72, and guides the water injection of the water injection pump 65 to the space below the second water stop board 72. The water injection control body 70 has a new water stop board at a desired position of the impermeable soil layer 7, and a space between the water injection pump 65 and the first water stop board 71 and below each newly installed water stop board. The water conduits 74 may be formed so as to pass through all the water shutoff boards between the spaces to be formed so as to have a shape corresponding to a larger number of aquifers.

The operation and effect of the pumped water injection device 50 will be described below. According to the pumped water injection device 50, the pumped water impregnation packer 60 pumps the aquifer 2 and the aquifer 3 by the same action as the pumped water impregnation packer 20 of the pumped water injection device 10 and pumps water. The water is collected by the connecting body 67, and the water impregnating packer 60 and the first water stop board 7 are pumped by the water injection pump 65.
Water is poured into the space formed between 1 and 1. Then, the water injection control body 70 that receives the water injection from the water injection pump 65
Water is injected into the aquifer 4 or the aquifer 5 for water injection at an appropriate flow rate. The water injection control body 70 receives the water injected from the water injection pump 65 by the first water stop board 71 and the water conduit 74, and at the same time, the water is supplied from the seventh valve 73 or the eighth valve 75 which is opened in an appropriate amount. First water stop board 71 and second water stop board 7
The space between the two or the space below the second water shutoff plate 72 is supplied at a target flow rate, and from each of the spaces, each space is adjacent to the other via the filter 8 and the screen 8 '. Pour water into layer 4 or aquifer 5.

Therefore, the pumped-water injection device 50 has not only the effect of the pumped-water injection device 10 but also the water-injection control body 70 does not need to be suspended by the suspension wire 14, so that it is suspended by the suspension wire 14. Pumping water injection device 5
No suspension equipment is required, and since the water injection control body 70 does not require a special material such as a packer, the cost can be further reduced and the construction efficiency can be improved. Further, in the pumped water injection device 50, since the water injection control body 70 fixes the first water stop plate 71 and the second water stop plate 72 directly to the appropriate positions in the well pipe 6, the fixing position becomes accurate, Construction accuracy is improved, construction is simple, and expansion is easy. In addition, the pumped water injection device 50 includes the water injection pump 65 and the water injection control body 70.
Since it is a separate structure, if the structure is such that the watertightness between the water-impermeable packer 60 for pumping water and the water injection control body 70 can be maintained, the water injection pump 65 is replaced by the water pump 61 for pumping water and the first water stop board 71. Installation position is free between and, and pumping water injection device 5
The degree of freedom in designing 0 is improved.

In the pumping water injection device 50, if the pump 40 for pumping water in the water injection region and the pumping pipe 41 are disposed between the pump 65 for water injection and the first water stop board 71, the pumping aquifer 2, In addition to being able to increase the amount of pumped water from 3, the effect of extending the period for cleaning the inside of the well pipe 6 as well as the pumped water injection device 10 is obtained.

[0037]

As described above, according to the layered pumping and water injection device for a well according to claim 1, the water-impermeable packer for pumping water and the water-impermeable packer for water injection are vertically connected in the well, Moreover, since the space inside the well is blocked by the water stop at the position desired by each impermeable soil layer, it is possible to pump or pour water to multiple aquifers at the desired flow rate with a single well pipe. From
There is no need to construct multiple wells in the ground, the cost of pumping and water injection can be greatly reduced, and it is easy to accurately position each valve in the desired aquifer and its construction efficiency. Is improved. In addition, since the water pumped from the pumping aquifer is used for water injection to the water injection aquifer, there is no need for water to come out to the ground or to transfer water from the ground.
It is effective in reducing sewage treatment costs and environmental conservation.

According to the stratified pumping water injection device for a well described in claim 2, in addition to the function of the stratified pumping water injection device for a well according to claim 1, the water flowing into the packer is pumped by a pump for pumping water. The pumping capacity of the device can be increased by pumping water to the ground through a pumping pipe, so the flow rate of water from the pumping aquifer to the pouring aquifer is higher than that of the introducing means. In this case, it is possible to cope with the case where the amount of water pumped from the pumping aquifer is larger than the amount of water pumped to the pouring aquifer, and the versatility of the device is improved. Further, if the pumped water is used for water injection into the water aquifer for water injection, the water injection capacity of the device can be easily enhanced.

According to the well-layered pumped-water injection device according to claim 3, the pumping-water injection device according to claim 1 is effective, and the water-stop board or the like is directly fixed in the well. In addition to the improvement, the construction is simple and no special material is required for the construction on the water injection side. Therefore, it is possible to improve the construction efficiency and further reduce the cost. Further, the water injection side of the device can be easily expanded. In addition, since the pumping water injection device of the present invention is configured such that the pump for water injection is connected to the target water injection space through the water guide passage as a separate body from the water stop panel, the water blocking packer for pumping water and the stop located at the top are connected. If the watertightness between the water basins can be maintained, the installation position of the water injection pump can be freely set between the pump for pumping water and the top water stop board, and the degree of freedom in designing the water injection and water injection device is improved.

According to the stratified pumping water injection apparatus for a well according to claim 4, in addition to the action and effect of the stratified pumping water injection apparatus for a well according to claim 3, the water flowing into the inside of the packer is used for pumping water. If you pump water to the ground etc. via the pump and pumping pipe,
Since the pumping capacity of the device can be increased, the pumping flow rate from the pumping aquifer to the pumping aquifer is higher than the pumping flow rate of the introducing means, or the pumping amount from the pumping aquifer. Can cope with a large amount of water injecting into the aquifer for water injection, thus improving the versatility of the device. Further, if the pumped water is used for water injection into the water aquifer for water injection, the water injection capacity of the device can be easily enhanced.

According to the well-layered pumped water injection device of claim 5, not only the effect of the pumped water injection device of claim 1 or 2 is obtained, but also at least the introducing means is provided in the water impregnating packer for water injection. The guided water is pumped up by a pump for pumping water in the water injection area to increase the water flow velocity of the water in the opening of the introduction means to prevent the accumulation of mud in the opening of the opening and the vicinity of the opening. In addition to prolonging the period of cleaning inside, it also has the effect of preventing pump failures.

According to the stratified pumping water injection device of the sixth aspect, in addition to having the effect of the pumping water injection device of the third or fourth aspect, the water between the water impervious packer for pumping water and the water stop board can be obtained. To pump the water in the water injection area by using a pump for pumping water to increase the water flow velocity of the water in the opening of the introducing means to prevent the accumulation of mud in the opening and the vicinity of the opening. The effect of preventing the breakdown of pumps, etc. is demonstrated while extending the period.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a first embodiment of the present invention.

FIG. 2 is a front sectional view showing a state in which a pump for pumping water in a water injection region and a water pump are provided in the apparatus of FIG.

FIG. 3 is a front sectional view showing a second embodiment of the present invention.

[Explanation of symbols] 1 Ground 2,3 Aquifer for pumping 4,5 Aquifer for water injection 6 Well pipe 7 Other strata (impermeable soil layer) 10 Pumping water injection device 11 Water stop body 20 Impermeable packer for pumping water 21 Pump for pumping water 22 Pumping pipe 23 First valve 24 Second valve 30 Impermeable packer for water injection 31 Introduction means (pump for water injection) 32 Introduction means (water injection pipe) 33 Third valve 34 Fourth valve 40 Water injection Region Pumping pump 41 Pumping pipe 50 Pumping water injection device 60 Pumping water impervious packer 61 Pumping water pump 62 Pumping pipe 63 Fifth valve 64 Sixth valve 65 Introducing means (pumping water pump) 66 Introducing means (injecting pipe) 70 Water injection control body 71 First water stop board 72 Second water stop board 73 Seventh valve 74 Water pipe (water flow passage) 75 Eighth valve

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuyuki Tamaki 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation

Claims (6)

[Claims] 1. In a well excavated in a ground having a plurality of aquifers, among the plurality of aquifers, a water stopping body is provided at a desired position of the aquifer for pumping water and between other aquifers. In addition to the stopped water impervious packer for pumping, the water impervious packer for stopping water between other layers is also placed at a desired position of the aquifer for water injection. In the water packer, a valve for adjusting the flow rate of the spring water from the pumping aquifer to flow into the pumping water impervious packer, and an introducing means for introducing the water that has flowed into the water packer into the water impregnating packer Is provided, the water-filling impermeable packer is provided with the other end of the introducing means for introducing the water of the pumping aquifer that has flowed into the pumping impermeable packer into the water-impermeable packer, A valve is provided to adjust the flow rate of the water introduced into the packer into the water supply aquifer. Stratified pumping water injection device of the well, characterized in that there. 2. The layered pumped water injection device for a well according to claim 1, wherein the pumping water impermeable packer is configured to adjust the flow rate of spring water from the pumping aquifer. A stratified pumping water injection device for a well, which is provided with a valve for inflowing inside, and a pumping pump and a pumping pipe for pumping and introducing the inflowing water upwardly. 3. Excavated into the ground having a pumping area having one or more aquifers for pumping and a water pouring area located below the pumping area and having two or more aquifers for water pumping. A stratified pumping water injection device that is installed in a well and pumps or injects water into the aquifer, in the well at a desired position of the aquifer for pumping among the plurality of aquifers. A water impervious packer for pumping that stops water from other strata with a water stop is arranged, and the water impermeable packer for pumping controls the flow rate of the spring water from the aquifer for pumping water. A valve for introducing the water into the inside and one end of an introducing means for introducing the water that has flowed into the inside into the water impregnating packer for water injection are provided. The other end of the introducing means for introducing the water of the aquifer into the inside, one water injection aquifer and another water injection aquifer A water stop board for stopping the water between, a water guiding channel and a valve for guiding the flow rate of the water introduced by the introduction pipe and the pump to the one aquifer for water injection, and after adjusting the flow rate of the water. A stratified pumping water injection device for a well, characterized in that it is provided with a water conduit and another valve for leading to the other water injection aquifer. 4. The layered pumped water injection device according to claim 3, wherein the pumping water impermeable packer adjusts the flow rate of spring water from the pumping aquifer. A stratified pumping water injection device for a well, which is provided with a valve for inflowing inside, and a pumping pump and a pumping pipe for pumping and introducing the inflowing water upwardly. 5. The well-layered pumped-water injection device according to claim 1 or 2, wherein a water-injection region pumping pump and pumping water capable of pumping at least the water injected by the introducing means into the water-impermeable packing packer. A stratified pumped water injection device for wells, which is provided with a pipe. 6. The layered pumped water injection device for a well according to claim 3 or 4, wherein at least the water injected by the introduction means is pumped between the water impervious packer for pumping water and the water stop board. A stratified pumping water injection device for a well, which is provided with a region pumping pump and a pumping pipe.