A hydrogeological exploration layered water stopping device

Abstract

The invention relates to the technical field of hydrogeological exploration, and specifically discloses a hydrogeological exploration stratified water-stopping device, comprising an elastic ring and a pipe body, wherein the pipe body consists of a first pipe section, a trumpet-shaped pipe section and a second pipe section, an end of the trumpet-shaped pipe section with a small inner diameter is fixedly connected to one end of the second pipe section, an end of the trumpet-shaped pipe section with a large inner diameter is fixedly connected to one end of the first pipe section, the elastic ring is sleeved on the outer peripheral side of the trumpet-shaped pipe section, a moving part that moves along the length direction of the second pipe section is provided on the second pipe section, a second electromagnetic lock that can limit the moving part is installed on the second pipe section, the moving part and the outer edge of the elastic ring are connected through a connecting part, a first electromagnetic lock that can limit the elastic ring is provided on the first pipe section, and the first pipe section and the elastic ring are connected through an elastic part. The isolation of adjacent aquifers by the hydrogeological exploration stratified water-stopping device is not affected by water pressure, and the isolation in the borehole is realized by using the elastic force of the elastic ring itself as a power source, and the structure is simple and the operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogeological exploration, in particular to a hydrogeological exploration layered water stopping device. Background Art

[0002] During the hydrogeological exploration process, in order to find out the distribution, permeability, water flow and other hydrological data of each underground aquifer, hydrogeological boreholes that pass through several aquifers are often drilled. In order to prevent the water in different aquifers from mixing through the boreholes, it is often necessary to isolate adjacent aquifers in the boreholes, and then the hydrological data of the aquifers are often collected through pumping tests.

[0003] In the prior art, an inflatable airbag is often used to separate adjacent aquifers. However, the airbag requires an additional inflating device, and when the hydraulic pressure in the environment where the airbag is located is too high, the air pressure requirement for the inflating device is high, making it difficult for the airbag to expand. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a hydrogeological exploration stratified water-stopping device, which can isolate adjacent aquifers without being affected by water pressure, thereby improving the reliability of the hydrogeological exploration stratified water-stopping device and utilizing the elastic force of the elastic ring itself as a power source to achieve isolation in the borehole, with a simple structure and easy operation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydrogeological exploration stratified water-stopping device, comprising an elastic ring and a pipe body, wherein the pipe body is composed of a first pipe section, a trumpet-shaped pipe section and a second pipe section, the end of the trumpet-shaped pipe section with a smaller inner diameter is fixedly connected to one end of the second pipe section, the end of the trumpet-shaped pipe section with a larger inner diameter is fixedly connected to one end of the first pipe section, the elastic ring is sleeved on the outer peripheral side of the trumpet-shaped pipe section, the second pipe section is provided with a movable part that moves along the length direction of the second pipe section, the second pipe section is provided with a second electromagnetic lock that can limit the movable part, the movable part and the outer edge of the elastic ring are connected by a connecting part, the first pipe section is provided with a first electromagnetic lock that can limit the elastic ring, and the first pipe section and the elastic ring are connected by an elastic part.

[0006] Wherein, the operation before lowering the pipe: the second electromagnetic lock limits the movable part, the first electromagnetic lock limits the elastic ring, and the outer edge of the elastic ring is inclined toward the second pipe section.

[0007] Among them, water-stopping operation: the second electromagnetic lock releases the moving part, and the outer edge of the elastic ring drives the moving part to move toward the trumpet-shaped pipe section through the connecting part.

[0008] Among them, the operation before lifting the pipe is: the first electromagnetic lock releases the elastic ring, and the elastic member pushes the elastic ring to move in the direction of the second pipe section.

[0009] As a preferred technical solution of the present invention, the connecting member is an annular soft belt, the movable member is a circular ring, and the circular ring and the outer peripheral side of the second pipe segment are slidingly sealed and fitted, the two ends of the annular soft belt are respectively fixedly connected to the outer side of the circular ring and the outer edge of the elastic ring, and the tube body, the circular ring, the annular soft belt and the elastic ring form a closed cavity.

[0010] As a preferred technical solution of the present invention, an electromagnetic valve communicating with the closed cavity is installed on the annular soft belt.

[0011] As a preferred technical solution of the present invention, two connecting pipes communicating with the closed cavity are installed on the pipe body.

[0012] After the water stopping operation, a circulating saline solution is injected into the closed cavity through two connecting pipes, and the temperature of the saline solution is lower than -5°C.

[0013] As a preferred technical solution of the present invention, a plurality of recessed grooves are provided on the inner circumference of the elastic ring.

[0014] When the elastic ring is sleeved on the outer peripheral side of the trumpet-shaped pipe section, the concave groove of the elastic ring is filled with water.

[0015] As a preferred technical solution of the present invention, an electric shock gas generator is arranged in the closed cavity.

[0016] As a preferred technical solution of the present invention, the number of the elastic members is not less than two, and the elastic members are arranged at equal angles around the first pipe section.

[0017] As a preferred technical solution of the present invention, the elastic member includes a closed shell, a sealed sliding block is installed in the inner cavity of the shell, one side of the sliding block is fixedly connected to one end of the sliding rod, the other end of the sliding rod passes through and extends to the outside of the shell, a spring is provided at a position of the sliding block away from the sliding rod, the sliding block divides the inner cavity of the shell into a first chamber and a second chamber, a connecting hole connecting the first chamber and the second chamber is opened on the sliding block, and the shell is filled with liquid.

[0018] When the sliding block slides in the inner cavity of the shell, the liquid in the shell flows through the connecting hole.

[0019] As a preferred technical solution of the present invention, it also includes a splicing pipe, one end of which is detachably connected to one end of the second pipe segment, and the other end of which is detachably connected to one end of the first pipe segment.

[0020] As a preferred technical solution of the present invention, a ferrule is fixed on the outer peripheral side of the first pipe section.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The hydrogeological exploration stratified water-stopping device of the example of the present invention is not affected by water pressure in isolating adjacent aquifers, thereby improving the reliability of the hydrogeological exploration stratified water-stopping device. The elastic force of the elastic ring itself is used as a power source to achieve isolation in the borehole, and the structure is simple and the operation is convenient.

[0023] 2. The stratified water-stopping device for hydrogeological exploration of the present invention is as follows: on the one hand, the second electromagnetic lock releases the moving part, and the outer edge of the elastic ring drives the moving part to move toward the trumpet-shaped pipe section through the connecting part. The outer edge of the elastic ring fits the borehole wall, and the elastic ring isolates adjacent aquifers to achieve stratified water-stopping of the borehole; on the other hand, the connecting part is an annular soft belt, and the moving part is a circular ring. The outer edge of the elastic ring drives the moving part to move toward the trumpet-shaped pipe section through the connecting part, and the volume of the closed cavity changes, which hinders the outer edge of the elastic ring from moving toward the borehole wall. The staff controls the The volume of the closed cavity is adjusted by controlling the opening degree or opening time of the electromagnetic valve, thereby reducing the relative speed when the outer edge of the elastic ring contacts the hole wall, reducing the risk of the outer edge of the elastic ring being scratched by the hole wall rock, and ensuring the isolation effect of the hydrogeological exploration stratified water-stopping device on the adjacent aquifer; on the other hand, a circulating salt solution is injected into the closed cavity through two connecting pipes, and the temperature of the salt solution is lower than -5°C, the water between the annular soft belt and the hole wall is frozen, and the water in the cracks of the hole wall corresponding to the position of the annular soft belt is frozen, thereby improving the isolation effect on the adjacent aquifer.

[0024] 3. In the hydrogeological exploration stratified water-stopping device of the example of the present invention, when the elastic ring is sleeved on the outer peripheral side of the trumpet-shaped pipe section, the recessed groove of the elastic ring is filled with water, the water in the recessed groove freezes, the elastic ring is lifted up at the position where the ice forms, the first electromagnetic lock releases the elastic ring, the elastic member pushes the elastic ring to move in the direction of the second pipe section, the elastic ring squeezes the ice at the recessed groove, the ice at the recessed groove melts during the sliding process, thereby reducing the resistance of the elastic ring during the sliding process along the trumpet-shaped pipe section.

[0025] 4. In the hydrogeological exploration layered water-stopping device of the example of the present invention, during the sliding process of the sliding block in the inner cavity of the shell, the liquid in the shell flows through the connecting hole to prevent the stone chips or bentonite in the drill hole from affecting the deformation of the elastic member.

[0026] 5. In the hydrogeological exploration layered water-stopping device of the present invention, the annular soft belt prevents bentonite or silt from appearing on the sliding path of the circular ring, thereby preventing the bentonite or silt from affecting the sliding of the circular ring along the second pipe section, thereby improving the reliability of the hydrogeological exploration layered water-stopping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the lower tube in the front state of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure;

[0029] Figure 3 for Figure 2 A schematic diagram of the structure at A;

[0030] Figure 4 It is a schematic diagram of the water-stopping structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the pipe lifting state of the present invention;

[0032] Figure 6 It is a schematic diagram of the elastic member structure of the present invention;

[0033] Figure 7 It is a schematic diagram of the elastic ring structure of the present invention.

[0034] In the figure: 1 connecting pipe, 2 ferrule, 3 first electromagnetic lock, 4 elastic ring, 5 connecting piece, 6 electromagnetic valve, 7 second electromagnetic lock, 8 pipe body, 801 first pipe section, 802 trumpet-shaped pipe section, 803 second pipe section, 9 splicing pipe, 10 elastic piece, 101 sliding rod, 102 housing, 103 sliding block, 104 spring, 11 moving piece, 12 electric shock gas generator. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] See also Figure 1-57. The present embodiment discloses a hydrogeological exploration stratified water-stopping device, comprising an elastic ring 4 and a pipe body 8, wherein the pipe body 8 is composed of a first pipe segment 801, a trumpet-shaped pipe segment 802 and a second pipe segment 803, wherein an end of the trumpet-shaped pipe segment 802 with a small inner diameter is fixedly connected to an end of the second pipe segment 803, and an end of the trumpet-shaped pipe segment 802 with a large inner diameter is fixedly connected to an end of the first pipe segment 801, and the elastic ring 4 is clamped on the outer peripheral side of the trumpet-shaped pipe segment 802, and the elastic ring 4 can move on the outer peripheral side of the trumpet-shaped pipe segment 802, and the second pipe segment 803 is provided with a moving part 11 that moves along the length direction of the second pipe segment 803, and the second pipe segment 803 is installed with a second electromagnetic lock 7 that can limit the moving part 11, and the moving part 11 and the outer edge of the elastic ring 4 are connected by a connecting part 5, and the first pipe segment 801 is provided with a first electromagnetic lock 3 that can limit the elastic ring 4, and the first pipe segment 801 and the elastic ring 4 are connected by an elastic part 10.

[0038] Among them, the operation before lowering the pipe: the second electromagnetic lock 7 limits the moving part 11, the first electromagnetic lock 3 limits the elastic ring 4, and the outer edge of the elastic ring 4 is inclined toward the second pipe section 803.

[0039] Among them, the water stopping operation: the second electromagnetic lock 7 releases the moving part 11, and the outer edge of the elastic ring 4 drives the moving part 11 to move toward the trumpet-shaped pipe section 802 through the connecting part 5.

[0040] Among them, the operation before lifting the pipe is: the first electromagnetic lock 3 releases the elastic ring 4, and the elastic member 10 pushes the elastic ring 4 to move in the direction of the second pipe section 803.

[0041] Furthermore, the elastic ring 4 is made of elastic nitrile rubber or elastic butadiene rubber, and the moving part 11 is a sliding block or a sliding ring.

[0042] Furthermore, the elastic member 10 is an elastic rod, a spring or a spring damper.

[0043] The first electromagnetic lock 3 and the second electromagnetic lock 7 are both electrically connected to an external control switch group.

[0044] Furthermore, the first electromagnetic lock 3 is an electric bolt lock or a magnetic lock in the prior art, and the second electromagnetic lock 7 is an electric bolt lock or a magnetic lock in the prior art: the electric bolt lock is controlled by electric current to make the lock tongue extend or withdraw to achieve locking limit; the magnetic lock is composed of an electromagnet and a lock body. When current passes through the electromagnet, the magnetic force generated by the electromagnet attracts the lock body together, thereby locking the limit.

[0045] The first electromagnetic lock 3 and the second electromagnetic lock 7 used in the present invention are common electronic components in the prior art, and their installation methods, working modes and structures are well-known technologies and will not be described in detail here.

[0046] The working process and principle of this embodiment are:

[0047] Before lowering the pipe, the second electromagnetic lock 7 limits the movable part 11, and the first electromagnetic lock 3 limits the elastic ring 4. The outer edge of the elastic ring 4 is inclined toward the second pipe section 803, and elastic potential energy is accumulated on the elastic ring 4. Then the hydrogeological exploration stratified water-stopping device is installed on the external drill rod, and the external drill rod drives the hydrogeological exploration stratified water-stopping device to move to a predetermined depth.

[0048] Water-stopping operation: the staff makes the second electromagnetic lock 7 release the moving part 11, and the outer edge of the elastic ring 4 drives the moving part 11 to move toward the trumpet-shaped pipe section 802 through the connecting part 5. The outer edge of the elastic ring 4 fits against the borehole wall, and the elastic ring 4 isolates adjacent aquifers to achieve layered water-stopping of the borehole.

[0049] Before lifting the pipe, the staff releases the elastic ring 4 with the first electromagnetic lock 3, and the elastic member 10 pushes the elastic ring 4 to move in the direction of the second pipe section 803. The diameter of the outer edge of the elastic ring 4 becomes smaller, so that the elastic ring 4 and the borehole wall are separated, and then the hydrogeological exploration stratified water-stopping device is lifted out of the borehole through the drill rod.

[0050] The isolation of adjacent aquifers by the hydrogeological exploration stratified water-stopping device is not affected by water pressure, thereby improving the reliability of the hydrogeological exploration stratified water-stopping device. The elastic force of the elastic ring 4 itself is used as a power source to achieve isolation in the borehole, and the structure is simple and the operation is convenient.

[0051] Furthermore, no less than two hydrogeological exploration stratified water-stopping devices are installed on the drill pipe to improve the water-blocking performance.

[0052] Embodiment 2:

[0053] like Figure 1-5 As shown in Figures 7 and 8, this embodiment discloses a layered water-stopping device for hydrogeological exploration, and its structure is substantially the same as that of the first embodiment, except that the connecting member 5 of this embodiment is an annular soft belt, the movable member 11 is a circular ring, and the circular ring and the outer peripheral side of the second pipe segment 803 are slidingly sealed and fitted, and the two ends of the annular soft belt are respectively fixedly connected to the outer side of the circular ring and the outer edge of the elastic ring 4, and the tube body 8, the circular ring, the annular soft belt and the elastic ring 4 form a closed cavity.

[0054] Furthermore, the annular soft belt is made of water-impermeable cloth, soft plastic or soft rubber.

[0055] The working process and principle of this embodiment are:

[0056] The annular soft belt prevents bentonite or silt from appearing on the sliding path of the circular ring, and prevents bentonite or silt from affecting the sliding of the circular ring along the second pipe section 803, thereby improving the reliability of the hydrogeological exploration stratified water-stopping device.

[0057] Furthermore, a water intake is provided on the second pipe section 803 .

[0058] Embodiment three:

[0059] like Figure 1-5 As shown, this embodiment discloses a layered water-stopping device for hydrogeological exploration, and its structure is substantially the same as that of the second embodiment, except that an electromagnetic valve 6 connected to the closed cavity is installed on the annular soft belt of this embodiment, and the electromagnetic valve 6 is electrically connected to an external control switch group.

[0060] The electromagnetic valve 6 is a common electronic component in the prior art, and its working method and structure are well-known technologies, which will not be described in detail here.

[0061] The working process and principle of this embodiment are:

[0062] The second electromagnetic lock 7 releases the moving part 11, and the outer edge of the elastic ring 4 drives the moving part 11 to move toward the trumpet-shaped pipe section 802 through the connecting part 5. The volume of the closed cavity changes, which hinders the outer edge of the elastic ring 4 from moving toward the borehole wall. The staff adjusts the volume of the closed cavity by controlling the opening degree or opening time of the electromagnetic valve 6, thereby reducing the relative speed when the outer edge of the elastic ring 4 contacts the borehole wall, reducing the risk of the outer edge of the elastic ring 4 being scratched by the borehole wall rock, and ensuring the isolation effect of the hydrogeological exploration stratified water-stopping device on the adjacent aquifer.

[0063] Embodiment 4:

[0064] like Figure 1 , 2 As shown in Figures 4 and 5, this embodiment discloses a layered water-stopping device for hydrogeological exploration, and its structure is substantially the same as that of the second or third embodiment, except that two connecting pipes 1 connecting the closed cavity are installed on the pipe body 8 of this embodiment.

[0065] Preferably, the salt solution includes, but is not limited to, sodium chloride solution, magnesium chloride solution, sodium sulfate solution, and sodium carbonate solution.

[0066] The working process and principle of this embodiment are:

[0067] After the water stopping operation, a circulating salt solution is injected into the closed cavity through the two connecting pipes 1, and the temperature of the salt solution is lower than -5°C. The water between the annular soft belt and the hole wall freezes, and the water in the cracks of the hole wall corresponding to the position of the annular soft belt freezes, thereby improving the isolation effect on the adjacent aquifer.

[0068] Embodiment five:

[0069] like Figure 7As shown, this embodiment discloses a hydrogeological exploration layered water-stopping device, the structure of which is substantially the same as that of the fourth embodiment, except that a plurality of recessed grooves are provided on the inner circumference of the elastic ring 4 of this embodiment.

[0070] When the elastic ring 4 is sleeved on the outer peripheral side of the trumpet-shaped pipe section 802 , the concave groove of the elastic ring 4 is filled with water.

[0071] The working process and principle of this embodiment are:

[0072] The staff injects circulating saline solution into the closed cavity through an external liquid pump and two connecting pipes 1, and the temperature of the saline solution is lower than -5°C. The heat of the water in the recessed groove is transferred to the saline solution through the trumpet-shaped pipe section 802, the water in the recessed groove freezes, and the elastic ring 4 is lifted up at the position corresponding to the freezing.

[0073] Before lifting the pipe, the staff releases the elastic ring 4 with the first electromagnetic lock 3, and the elastic member 10 pushes the elastic ring 4 to move in the direction of the second pipe section 803. The elastic ring 4 squeezes the ice in the recessed groove, and the ice in the recessed groove melts during the sliding process, thereby reducing the resistance of the elastic ring 4 during the sliding process along the trumpet-shaped pipe section 802.

[0074] Furthermore, the tube body 8 is made of metal.

[0075] Embodiment six:

[0076] like Figure 2 , 4 As shown in Figure 5, this embodiment discloses a hydrogeological exploration stratified water-stopping device, and its structure is substantially the same as that of the third embodiment, except that an electric shock gas generator 12 is provided in the closed cavity of this embodiment, and the electric shock gas generator 12 is electrically connected to an external control switch group.

[0077] Preferably, the electric shock gas generator 12 is a common component in automobile airbags in the prior art.

[0078] The working process and principle of this embodiment are:

[0079] Before lifting the pipe, the staff makes the first electromagnetic lock 3 release the elastic ring 4, and the staff energizes the electric shock gas generator 12 to generate gas. The pressure in the closed cavity increases rapidly, and the annular soft belt bulges outward to give the elastic ring 4 a force toward the second pipe section 803.

[0080] The force of the elastic member 10 on the elastic ring 4 and the force of the gas in the closed cavity on the elastic ring 4 overcome the static friction between the elastic ring 4 and the trumpet-shaped tube section 802, causing the elastic ring 4 to slide along the outer peripheral side of the trumpet-shaped tube section 802, thereby facilitating the separation of the elastic ring 4 from the hole wall.

[0081] Then the staff controls the electromagnetic valve 6 to open so that the gas in the closed cavity can be discharged.

[0082] Embodiment seven:

[0083] like Figure 1 , 2 As shown in Figures 4 and 5, this embodiment discloses a layered water-stopping device for hydrogeological exploration, and its structure is substantially the same as that of the first embodiment, except that the number of elastic members 10 in this embodiment is not less than two, and the elastic members 10 are arranged at equal angles around the first pipe section 801, so that the elastic members 10 cause the elastic ring 4 to be subjected to uniform force.

[0084] Embodiment eight:

[0085] like Figure 6 As shown, the present embodiment discloses a layered water-stopping device for hydrogeological exploration, and its structure is substantially the same as that of the first embodiment, except that the elastic member 10 of the present embodiment comprises a closed shell 102, and a sealed sliding block 103 is installed in the inner cavity of the shell 102, one side of the sliding block 103 is fixedly connected to one end of the sliding rod 101, and the other end of the sliding rod 101 passes through and extends to the outside of the shell 102, and a spring 104 is provided at a position of the sliding block 103 away from the sliding rod 101, and the sliding block 103 divides the inner cavity of the shell 102 into a first chamber and a second chamber, and a connecting hole connecting the first chamber and the second chamber is provided on the sliding block 103, and the shell 102 is filled with liquid.

[0086] When the sliding block 103 slides in the inner cavity of the shell 102 , the liquid in the shell 102 flows through the connecting hole, thereby preventing the stone chips or bentonite in the drill hole from affecting the deformation of the elastic member 10 .

[0087] Embodiment nine:

[0088] like Figure 1 , 2 As shown in Figures , 4 and 5, this embodiment discloses a layered water-stopping device for hydrogeological exploration, and its structure is substantially the same as that of the first embodiment, except that this embodiment further comprises a spliced ​​tube 9, one end of the spliced ​​tube 9 and an end of the second pipe segment 803 away from the trumpet-shaped pipe segment 802 are detachably connected, and the other end of the spliced ​​tube 9 and an end of the first pipe segment 801 away from the trumpet-shaped pipe segment 802 are detachably connected.

[0089] The splicing pipe 9 facilitates the assembly of a plurality of the hydrogeological exploration layered water-stopping devices.

[0090] Embodiment ten:

[0091] like Figure 1 , 2As shown in , 4 and 5, this embodiment discloses a layered water-stopping device for hydrogeological exploration, and its structure is substantially the same as that of the first embodiment, except that a ferrule 2 is fixed on the outer peripheral side of the first pipe segment 801 of this embodiment, and the ferrule 2 prevents the first electromagnetic lock 3 or the elastic member 10 from colliding with the wall of the borehole, thereby improving the reliability of this layered water-stopping device for hydrogeological exploration.

[0092] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A hydrogeological exploration layered water stopping device, characterized in that: The invention comprises an elastic ring (4) and a tube body (8), wherein the tube body (8) is composed of a first tube segment (801), a trumpet-shaped tube segment (802) and a second tube segment (803), wherein an end of the trumpet-shaped tube segment (802) with a smaller inner diameter is fixedly connected to an end of the second tube segment (803), and an end of the trumpet-shaped tube segment (802) with a larger inner diameter is fixedly connected to an end of the first tube segment (801), wherein the elastic ring (4) is sleeved on the outer peripheral side of the trumpet-shaped tube segment (802), and the second tube segment (803) is fixedly connected to an end of the first tube segment (801). 803) is provided with a moving part (11) that moves along the length direction of the second pipe section (803), the second pipe section (803) is installed with a second electromagnetic lock (7) that can limit the moving part (11), the moving part (11) and the outer edge of the elastic ring (4) are connected by a connecting part (5), the first pipe section (801) is provided with a first electromagnetic lock (3) that can limit the elastic ring (4), and the first pipe section (801) and the elastic ring (4) are connected by an elastic part (10); Wherein, in the operation before lowering the pipe: the second electromagnetic lock (7) limits the position of the moving part (11), the first electromagnetic lock (3) limits the position of the elastic ring (4), and the outer edge of the elastic ring (4) is inclined toward the second pipe section (803); In the water-stopping operation, the second electromagnetic lock (7) releases the moving part (11), and the outer edge of the elastic ring (4) drives the moving part (11) to move toward the trumpet-shaped pipe section (802) through the connecting part (5); The operation before lifting the pipe is as follows: the first electromagnetic lock (3) releases the elastic ring (4), and the elastic member (10) pushes the elastic ring (4) to move in the direction of the second pipe section (803).

2. The hydrogeological exploration layered water stopping device according to claim 1 is characterized by: The connecting member (5) is an annular soft belt, the moving member (11) is a circular ring, and the circular ring and the outer peripheral side of the second pipe section (803) are slidingly sealed and fitted, and the two ends of the annular soft belt are respectively fixedly connected to the outer side of the circular ring and the outer edge of the elastic ring (4), and the pipe body (8), the circular ring, the annular soft belt and the elastic ring (4) form a closed cavity.

3. The hydrogeological exploration layered water stopping device according to claim 2 is characterized by: An electromagnetic valve (6) connected to the closed cavity is installed on the annular soft belt.

4. The hydrogeological exploration layered water stopping device according to claim 2 or 3, characterized in that: Two connecting pipes (1) connected to the closed cavity are installed on the pipe body (8); After the water stopping operation, a circulating salt solution is injected into the closed cavity through the two connecting pipes (1), and the temperature of the salt solution is lower than -5°C.

5. The hydrogeological exploration layered water stopping device according to claim 4 is characterized by: The inner circumference of the elastic ring (4) is provided with a plurality of recessed grooves; When the elastic ring (4) is sleeved on the outer peripheral side of the trumpet-shaped pipe section (802), the concave groove of the elastic ring (4) is filled with water.

6. The hydrogeological exploration layered water stopping device according to claim 3 is characterized by: An electric shock gas generator (12) is arranged in the closed cavity.

7. The hydrogeological exploration layered water stopping device according to claim 1 is characterized by: The number of the elastic members (10) is no less than two, and the elastic members (10) are arranged at equal angles around the first pipe section (801).

8. The hydrogeological exploration layered water stopping device according to claim 1 is characterized by: The elastic member (10) comprises a closed shell (102), a sealed sliding block (103) is installed in the inner cavity of the shell (102), one side of the sliding block (103) is fixedly connected to one end of the sliding rod (101), the other end of the sliding rod (101) passes through and extends to the outside of the shell (102), a spring (104) is provided at a position of the sliding block (103) away from the sliding rod (101), the sliding block (103) divides the inner cavity of the shell (102) into a first chamber and a second chamber, a connecting hole connecting the first chamber and the second chamber is opened on the sliding block (103), and the shell (102) is filled with liquid; During the sliding process of the sliding block (103) in the inner cavity of the shell (102), the liquid in the shell (102) flows through the connecting hole.

9. The hydrogeological exploration layered water stopping device according to claim 1, characterized in that: It also comprises a splicing tube (9), one end of the splicing tube (9) being detachably connected to one end of the second tube segment (803), and the other end of the splicing tube (9) being detachably connected to one end of the first tube segment (801).

10. The hydrogeological exploration layered water stopping device according to claim 1, characterized in that: A ferrule (2) is fixed on the outer peripheral side of the first pipe section (801).

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