Efficient micro-water test system and method

Abstract

The invention relates to an efficient micro-water test system and method. The micro-water test system comprises a water lifting container and a water level monitoring device, the water lifting container comprises an inner-layer barrel, an outer-layer barrel and a water storage cavity located between the inner-layer barrel and the outer-layer barrel, the inner-layer barrel is of a barrel structure with the upper portion and the lower portion open, the water lifting container is provided with a drill rod connecting piece, and the drill rod connecting piece is not located over a horn mouth of the inner-layer barrel; the water level monitoring device comprises a water level gauge and an electric folding and unfolding mechanism; when a micro water test is carried out, the water lifting container is lowered to a position below an underground water level line along a drill hole through the drill rod, and meanwhile, the water level gauge is lowered to a position below the bottom surface of the water lifting container through the hollow cavity of the cylinder on the inner side of the water lifting container through the electric retracting and releasing mechanism; the water lifting container is rapidly lifted to the position higher than the underground water level line through the drill rod, the position of the water level gauge is kept unchanged, the water level is monitored, and meanwhile the amplitude of the water level in the drill hole can be rapidly and accurately measured.

Description

Technical Field

[0001] The present invention relates to the field of hydrogeological tests, and in particular to an efficient micro-water test system and method. The device can instantly change the water level in a hole during a micro-water test, and can quickly and accurately measure the water level variation in the borehole, thereby improving the safety, accuracy and efficiency of field hydrogeological tests and basic hydrological data collection processes. Background Art

[0002] Rock (soil) hydrogeological parameters are essential for identifying hydrogeological conditions and conducting quantitative research on groundwater. They can provide basic data for estimating the amount of water inflow from mines (pits), and for the prevention and control of groundwater in ore deposits and their comprehensive utilization. The slug test is a method for determining hydrogeological parameters. This method is a simple and relatively fast field test method for obtaining hydrogeological parameters. It is a test that monitors the change of water level and time in a short time by instantly changing the amount of water in the borehole. The principle of the slug test is to make the water level in the borehole change instantly through certain stimulation means, and then observe the change of the borehole water level over time, and fit it with the standard curve obtained based on the theoretical mathematical model, so as to obtain the hydrogeological parameters of the underground aquifer in the test wellbore or borehole; the method is economical, low-cost, easy to operate, and less affected by the on-site environment.

[0003] Existing means of changing the borehole water level include using pressure, water lifting or water injection equipment to instantly change the water level in the hole; among them, changing the borehole water level by water lifting equipment is a relatively simple and easy-to-operate method. It only needs to lower the water lifting equipment into the borehole and quickly lift out part of the water in the borehole to achieve the purpose of changing the water level in the borehole. The existing micro-water test process requires the water level in the borehole to be instantly changed and then the change in water level is observed. After the borehole water level is changed by the water lifting equipment, the water level meter needs to be immediately placed in the measuring borehole to measure the change in water level. For some strata with good permeability, after the water lifting device lifts water, the water level will return to the static water level in a very short time, generally 0.1-3 minutes. This time cannot meet the placement of the water level meter, which makes the test difficult to succeed, that is, the water lifting process and the measurement process cannot be carried out simultaneously. Even if, for formations with poor permeability, the lowering time of the water level meter meets the test requirements and can be placed in the borehole for measurement in time, the measurement accuracy of the existing water level meter is difficult to meet the test requirements, and the entire test process is very short. Moreover, the lowering process of the existing water level meter is basically manually operated. When the drilling depth is large, the retraction and release of the water level meter will be more troublesome, and the water level meter is easy to scratch the hole wall during the lowering process, which will have a certain impact on the test. Therefore, it is necessary to improve the micro-water test equipment and measurement methods to meet the test requirements for data. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides an efficient micro-water test system and method. The test equipment can be conveniently installed and used at a drilling site to perform micro-water tests, and can ensure that a water level meter can continuously measure the water level during the micro-water test.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an efficient micro-water test system, which includes a water lifting container and a water level monitoring device. The water lifting container includes an inner cylinder, an outer cylinder and a water storage cavity located between the inner and outer cylinders, the cavity mouth of the water storage cavity is open, the inner cylinder is a cylinder structure open up and down, and its upper cylinder mouth is a trumpet mouth that is larger at the top and smaller at the bottom. The water lifting container is provided with a drill rod connecting piece, which is fixedly connected to the top of the water inlet of the water lifting container through a plurality of connecting rods, and the drill rod connecting piece is not located directly above the trumpet mouth of the inner cylinder, and a threaded interface matching the drill rod is provided at the upper end of the drill rod connecting piece; the water level monitoring device includes a water level gauge and an electric retracting and releasing mechanism, and the electric retracting and releasing mechanism is connected to the water level gauge through a reeling rope and controls the lifting and lowering of the water level gauge;

[0006] When conducting a micro-water test, the water lifting container is lowered along the borehole through the drill rod to below the groundwater level, and the water inlet at the upper end of the water lifting container is immersed in the groundwater in the borehole. At the same time, the water level gauge is lowered through the hollow cavity of the inner cylinder of the water lifting container to below the bottom surface of the water lifting container through the electric retracting mechanism and the reeling rope. After the water storage cavity of the water lifting container is filled with water, the water lifting container is quickly lifted to a position above the groundwater level through the drill rod. When the water lifting container is lifted, the water level gauge maintains its position unchanged to monitor the water level.

[0007] A better technical solution of the present invention: the water level meter includes a water level sensing probe and a control module installed on the electric retractable mechanism, the water level sensing probe includes a water-permeable outer shell and a varistor located in the water-permeable outer shell; the positive and negative wires of the varistor extend along the winding rope to the electric retractable mechanism respectively, and are connected to the control module signal, and the control module controls the opening and closing of the water level sensing probe and the data transmission.

[0008] The preferred technical solution of the present invention is as follows: the electric retractable mechanism comprises a bracket, a rope reel and a high-torque power device, and the rope reel is rotatably mounted on the bracket; the reeling rope is a rope with a scale, one end of the reeling rope is wound around the rope reel, and the other end is connected to the tail of the water level gauge, the output shaft of the high-torque power device is connected to the central rotating shaft of the rope reel, and the high-torque power device is used to control the forward or reverse rotation of the rope reel to retract and release the reeling rope; the high-torque power device comprises a motor, a battery and a control switch, the forward and reverse rotation of the motor is controlled by the control switch, and the battery is used to provide power to the motor.

[0009] A preferred technical solution of the present invention is as follows: the borehole is formed by drilling and has a diameter of 75 to 110 mm; the outer diameter of the water lifting container matches the inner diameter of the borehole.

[0010] A more preferred technical solution of the present invention is that the outer cylinder mouth and the inner cylinder mouth of the water lifting container are connected by at least three support rods.

[0011] A better technical solution of the present invention is that the water lifting container is a metal cylinder structure, and the connecting rod is a metal rod, and its two ends are respectively welded to the cylinder mouth of the outer cylinder and the bottom of the drill rod connecting piece.

[0012] A preferred technical solution of the present invention is that a manual rotating handle is provided on the rope winding drum.

[0013] A better technical solution of the present invention: the lower end of the water-permeable outer shell is tapered; the control module includes a 9V power supply, a control switch and a display module that are signal-connected in sequence, the positive and negative wires of the varistor are led out through a winding rope and are connected in series with the 9V power supply and the control switch, the varistor is powered on or off by the control switch, the varistor is signal-connected to the display module, and the water level depth is displayed through the display module, the display module has a storage function, stores data with a time step of 1 second, and transmits the data through the water level data output interface.

[0014] The present invention also provides an efficient micro-water test method, wherein the test method uses the micro-water test system to perform a micro-water test, and the specific test steps are as follows:

[0015] S1. After the drilling construction is completed, measure the drilling point, check the equipment, and wait for 24 hours for the water level to stabilize and measure its static water level;

[0016] S2. Remove the core tube, install the water lifting container on the drill pipe through the drill pipe connector, and lower the water lifting container to 3.0-4.0m below the groundwater level according to the normal drilling steps to ensure that the water lifting container can be completely immersed in the groundwater in the borehole. The groundwater in the borehole enters the water storage cavity through the water inlet on the upper part of the water lifting container and fills the water storage cavity;

[0017] S3. Place the water level sensing probe of the water level meter into the borehole, facing the middle cavity of the inner cylinder of the water lifting container, and lower the reel rope through the electric retractable mechanism, thereby driving the water level sensing probe to pass through the middle cavity of the inner cylinder of the water lifting container and be located below the bottom surface of the water lifting container;

[0018] S4. Turn on the control switch of the water level meter and check whether the instrument is normal. If the instrument is working normally, you can start the micro-water test;

[0019] S5. During the test, start the winch of the drilling rig and quickly lift the water container to a position greater than 3.0m. During the lifting process of the water container, the water level sensor probe remains in the same position and automatically measures the change of the water level;

[0020] S6. After the water level returns to the initial water level, repeat steps S1 to S5 at least three times, collect test data, and complete the micro-water test;

[0021] S7. After the test is completed, the water level sensing probe is pulled out by controlling the reeling rope to be reeled in through the electric reeling mechanism.

[0022] The preferred technical solution of the present invention is as follows: after the test is completed, the micro-water test data is exported and imported into the professional hydrogeological software AquiferTest for calculation.

[0023] During the test of the present invention, the water-lifting device must be ensured to be below the groundwater level line, and the inside of the water-lifting container must be filled with water. The drill rod is lifted by the winch of the drilling rig, thereby driving the water-lifting container to instantly lift a certain distance, so the amount of water in the borehole will be reduced instantly. Since the water supply in the aquifer cannot be completed instantly, the water level will show an instantaneous drop, and then quickly rise to the static water level; during this process, the water level meter can be accurately monitored; the contraction and lowering of the water level meter are controlled by a power motor, which can improve the efficiency of retraction and release. A varistor is provided in the water level meter of the present invention. After contacting water or when the atmospheric pressure changes greatly, its resistance value changes, thereby causing the current in the circuit to change; through a depth display device with a storage function, the resistance value of the varistor will change linearly at different depths, thereby causing the current in the circuit to change, and the change in water level is obtained by measuring the change in current. The display device can store data with a time step of 1 second, and can transmit data through the water level data output interface, and technicians can process and operate the data. The lower part of the water level gauge is cone-shaped, and the side walls are permeable, so water can flow in and out freely, ensuring the stability of the readings, smoother operation, and less likely to get stuck with the well wall.

[0024] The beneficial effects of the present invention are as follows:

[0025] (1) The present invention improves the water-lifting device, which can be conveniently connected to the drill rod, can be quickly lowered and raised through the drill rod, and can lower the water level gauge while lifting water. After the water is lifted, it can also monitor at the same time to ensure the normal progress of the test; the entire device can be easily and quickly operated in the micro-water test.

[0026] (2) It can ensure that the water level meter can continuously measure the water level during the micro-water test, and can be more widely used in other hydrogeological tests.

[0027] (3) The water level meter in the present invention is provided with a varistor and a depth display device with a storage function, which can ensure that the water level meter is not affected by water leakage from the hole wall during use, thereby ensuring the accuracy of the measurement.

[0028] (4) The water level gauge in the present invention is electrically controlled, and its control mechanism contains a high-torque power device, which can improve the efficiency of retraction and release, and can reduce manpower during the retraction and release process. Only one person is needed to pull the reel to ensure that the reel can be raised and lowered along the center position of the water lifting container without rubbing against the hole wall or affecting the water lifting container. The efficiency of retracting and releasing the rope in the water level gauge rope reel before and after the test is increased, thereby improving convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the micro-water test system of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the water lifting container in the present invention;

[0031] Figure 3 It is a front view of the electric retractable mechanism of the present invention;

[0032] Figure 4 is a side view of the electric retractable mechanism of the present invention;

[0033] Figure 5 is an enlarged schematic diagram of the high torque power device of the present invention;

[0034] Figure 6 It is a schematic diagram of the connection between the water level meter and the electric retractable mechanism in the present invention;

[0035] Figure 7 It is an enlarged schematic diagram of the water level sensing probe in the present invention;

[0036] Figure 8 It is the control principle diagram of the water level meter in the present invention;

[0037] Fig. 9 It is a schematic diagram of the operation of the micro-water test in the present invention;

[0038] Fig.10 It is a water level variation curve diagram of the micro-water test in the embodiment.

[0039] In the figure: 1—water lifting container, 100—inner cylinder, 101—outer cylinder, 102—water storage chamber, 2—water level gauge, 200—water-permeable outer shell, 201—varistor, 202—9V power supply, 203—control switch, 204—display module, 3—drill rod connecting piece, 4—electric retracting and releasing mechanism, 400—bracket, 401—rope reel, 402—high torque power device, 403—rotating handle, 5—drill rod, 6—connecting rod, 7—borehole, 8—groundwater level line, 9—retracting rope, 10—water level data output interface. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Figures 1 to 10 The drawings are all of embodiments, which are drawn in a simplified manner and are only used to clearly and concisely illustrate the purpose of the embodiments of the present invention. The following technical solutions shown in the drawings are specific solutions of the embodiments of the present invention and are not intended to limit the scope of the present invention to be protected. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] The embodiment provides an efficient micro-water test system, such as Figures 1 to 8As shown, the micro-water test system includes a water lifting container 1 and a water level monitoring device. The water lifting container 1 includes an inner cylinder 100, an outer cylinder 101 and a water storage chamber 102 located between the inner and outer cylinders. The mouth of the outer cylinder 101 of the water lifting container 1 is connected to the mouth of the inner cylinder 100 by at least three support rods 103. The mouth of the water storage chamber 102 is open, the inner cylinder 100 is a cylinder structure open at the top and bottom, and its upper mouth is a trumpet mouth with a larger upper part and a smaller lower part. The water lifting container 1 is provided with a drill rod connecting piece 3, and the drill rod connecting piece 3 is fixedly connected to the top of the water inlet of the water lifting container 1 through a plurality of connecting rods 6. The water lifting container 1 is a metal cylinder structure, and the connecting rod 6 is a metal rod, and its two ends are respectively welded to the mouth of the outer cylinder 101 and the bottom of the drill rod connecting piece 3. The drill rod connecting piece 3 is not located directly above the trumpet mouth of the inner cylinder 100, and does not affect the lowering of the water level gauge 2; a threaded interface matching the drill rod 5 is provided at the upper end of the drill rod connecting piece 3; the water level monitoring device includes a water level gauge 2 and an electric retracting mechanism 4, and the electric retracting mechanism 4 is connected to the water level gauge 2 through a reeling rope 9, and controls the lifting and lowering of the water level gauge 2.

[0043] The embodiment provides an efficient micro-water test system, such as Figures 6 to 8 As shown, the water level meter 2 includes a water level sensing probe and a control module installed on the electric retractable mechanism. The water level sensing probe includes a water-permeable outer shell 200 and a varistor 201 located in the water-permeable outer shell 200; the positive and negative wires of the varistor 201 extend along the winding rope 9 to the electric retractable mechanism 4 respectively, and are connected to the control module signal, and the control module controls the opening and closing of the water level sensing probe and the data transmission. The lower end of the permeable outer shell 200 is conical; the control module includes a 9V power supply 202, a control switch 203 and a display module 204 which are sequentially connected in signal. The positive and negative wires of the varistor 201 are led out through the winding rope 9 and are connected in series with the 9V power supply 202 and the control switch 203. The varistor 201 is powered on or off by the control switch 203. The varistor 201 is signal-connected to the display module 204, and the water level depth is displayed by the display module 204. The display module 204 has a storage function, stores data with a time step of 1 second, and transmits data through the water level data output interface 10.

[0044] The embodiment provides an efficient micro-water test system, such as Figures 3 to 5As shown, the electric retractable mechanism 4 includes a bracket 400, a rope reel 401 and a high torque power device 402. The rope reel 401 is rotatably mounted on the bracket 400. The retractable rope 9 is a rope with a scale. One end of the retractable rope 9 is wound around the rope reel 401, and the other end is connected to the tail of the water level gauge 2. The output shaft of the high torque power device 402 is connected to the central rotating shaft of the rope reel 401, and the high torque power device 402 controls the forward or reverse rotation of the rope reel 401 to retract and release the retractable rope 9. The high torque power device 402 includes a motor, a battery and a control switch. The forward and reverse rotation of the motor is controlled by the control switch, and the motor is powered by the battery. A manual rotating handle 403 is provided on the rope reel 401.

[0045] When conducting a micro-water test, Fig. 9 As shown, the water lifting container 1 is lowered to below the groundwater level 8 along the borehole 7 through the drill rod 5, and the water inlet at the upper end of the water lifting container 1 is immersed in the groundwater in the borehole 7. At the same time, the water level gauge 2 is lowered to below the bottom surface of the water lifting container 1 through the hollow cavity of the inner cylinder of the water lifting container 1 through the electric retracting mechanism 4 and the reeling rope 9. After the water storage cavity 102 of the water lifting container 1 is filled with water, the water lifting container 1 is quickly lifted to a position above the groundwater level 8 through the drill rod 5. When the water lifting container 1 is lifted, the water level gauge 2 remains in the same position to monitor the water level. The borehole 7 is a borehole formed by drilling, with a diameter of 91 mm; the outer diameter of the water lifting container 1 matches the inner diameter of the borehole 7.

[0046] In underground aquifers, in the absence of heavy rainfall or pumping, the groundwater level in a region remains basically stable in a short period of time. An efficient micro-water test method provided in the embodiment uses the micro-water test system to perform a micro-water test, and the specific test steps are as follows:

[0047] S1. After the drilling construction is completed, measure the drilling point, check the equipment, and wait for 24 hours for the water level to stabilize and measure its static water level;

[0048] S2. Remove the core tube, install the water lifting container 1 on the drill pipe 5 through the drill pipe connector 3, and lower the water lifting container to 3.0-4.0m below the groundwater level 8 according to the normal drilling steps to ensure that the water lifting container 1 can be completely immersed in the groundwater in the borehole 7. The groundwater in the borehole 7 enters the water storage cavity through the water inlet on the upper part of the water lifting container 1 and fills the water storage cavity 102;

[0049] S3. Place the water level sensing probe of the water level meter 2 into the opening of the borehole 7 and face the position of the middle cavity of the inner cylinder of the water lifting container 1. The electric retractable mechanism 4 controls the reeling rope 9 to be lowered, thereby driving the water level sensing probe to pass through the middle cavity of the inner cylinder of the water lifting container 1 and be located below the bottom surface of the water lifting container 1.

[0050] S4. Turn on the control switch of the water level meter 2 to check whether the instrument is normal. To ensure that the instrument is working properly, you can start the micro-water test; the water level meter of the present invention increases the varistor and has a storage function to display the depth of the device, which can ensure that the water level meter is not affected by the hole wall leakage during use;

[0051] S5. During the test, the hoisting device of the drilling rig is started to quickly lift the water lifting container 1 to a position greater than 3.0m. During the lifting process of the water lifting container 1, the water level sensing probe remains in the same position and automatically measures the change of the water level. When the water lifting container 1 is lifted quickly, the water in the borehole is quickly reduced, and the water in the aquifer cannot instantly pass through the borehole wall into the borehole. The process generally takes 0.1-3 minutes. When the water lifting container 1 is lifted instantly, the position of the water level meter in the borehole does not change. Therefore, the device can meet the requirements of the micro-water test and can perform the micro-water test.

[0052] S6. After the water level returns to the initial water level, repeat steps S1 to S5 at least three times, collect test data, and complete the micro-water test;

[0053] S7. After the test is completed, the water level sensing probe is pulled out by controlling the reeling rope to be reeled in through the electric reeling mechanism.

[0054] S8. After the test is completed, the micro-water test data is exported and imported into the professional hydrogeological software AquiferTest for calculation. Fig.10 This is the water level change curve of the micro-water test. Fig.10 It can be seen from the figure that from 0 to 60 seconds, the water level before the test was conducted was the initial water level, which remained stable at about 3.25m. At the 60th second, after the test began, the water level in the borehole dropped to about 1.20m due to the instantaneous water pumping. After the 62nd second, the water level in the borehole was replenished by the water in the surrounding aquifer, so the water level gradually recovered to the initial water level of about 3.25m, and the overall water level recovery rate was from fast to slow. Therefore, the operation and measurement steps of the micro-water test were successful.

[0055] The above is only one embodiment of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. An efficient micro-water test system, characterized by: The micro-water test system comprises a water lifting container (1) and a water level monitoring device. The water lifting container (1) comprises an inner cylinder (100), an outer cylinder (101) and a water storage cavity (102) located between the inner and outer cylinders. The cavity opening of the water storage cavity (102) is open. The inner cylinder (100) is a cylinder structure open at the top and bottom, and its upper cylinder opening is a trumpet mouth with a larger upper part and a smaller lower part. The water lifting container (1) is provided with a drill rod connecting piece (3). The drill rod connecting piece (3) is fixedly connected to the water inlet of the water lifting container (1) through a plurality of connecting rods (6), and the drill rod connecting piece (3) is not located directly above the bell mouth of the inner cylinder (100), and a threaded interface matching the drill rod (5) is provided at the upper end of the drill rod connecting piece (3); the water level monitoring device comprises a water level gauge (2) and an electric retractable mechanism (4), and the electric retractable mechanism (4) is connected to the water level gauge (2) through a reeling rope (9) and controls the lifting and lowering of the water level gauge (2); When conducting a micro-water test, the water lifting container (1) is lowered along the borehole (7) through the drill rod (5) to below the groundwater level (8), and the water inlet at the upper end of the water lifting container (1) is immersed in the groundwater in the borehole (7). At the same time, the water level gauge (2) is lowered through the hollow cavity of the inner cylinder of the water lifting container (1) to below the bottom surface of the water lifting container (1) through the electric retracting mechanism (4) and the reeling rope (9). After the water storage chamber (102) of the water lifting container (1) is filled with water, the water lifting container (1) is quickly lifted to a position above the groundwater level (8) through the drill rod (5). When the water lifting container (1) is lifted, the water level gauge (2) remains in a fixed position to monitor the water level.

2. An efficient micro-water test system according to claim 1, characterized in that: The water level meter (2) comprises a water level sensing probe and a control module installed on the electric retractable mechanism, wherein the water level sensing probe comprises a water-permeable outer shell (200) and a varistor (201) located inside the water-permeable outer shell (200); the positive and negative wires of the varistor (201) extend along the reeling rope (9) to the electric retractable mechanism (4) respectively, and are connected to the control module signal, and the control module controls the opening and closing of the water level sensing probe and data transmission.

3. An efficient micro-water test system according to claim 1 or 2, characterized in that: The electric retractable mechanism (4) comprises a bracket (400), a rope reel (401) and a high-torque power device (402), wherein the rope reel (401) is rotatably mounted on the bracket (400); the retractable rope (9) is a rope with a scale, one end of the retractable rope (9) is wound around the rope reel (401), and the other end is connected to the tail of the water level gauge (2); the output shaft of the high-torque power device (402) is connected to the central rotating shaft of the rope reel (401), and the rope reel (401) is controlled by the high-torque power device (402) to rotate forward or reverse to retract and release the retractable rope (9); the high-torque power device (402) comprises a motor, a battery and a control switch, wherein the forward and reverse rotations of the motor are controlled by the control switch, and the motor is powered by the battery.

4. An efficient micro-water test system according to claim 1 or 2, characterized in that: The borehole (7) is a borehole formed by drilling, and has a diameter of 75 to 110 mm; the outer diameter of the water lifting container (1) matches the inner diameter of the borehole (7).

5. An efficient micro-water test system according to claim 1 or 2, characterized in that: The mouth of the outer cylinder (101) of the water lifting container (1) is connected to the mouth of the inner cylinder (100) via at least three support rods (103).

6. An efficient micro-water test system according to claim 1 or 2, characterized in that: The water lifting container (1) is a metal cylinder structure, and the connecting rod (6) is a metal rod, the two ends of which are respectively welded to the mouth of the outer cylinder (101) and the bottom of the drill rod connecting piece (3).

7. An efficient micro-water test system according to claim 3, characterized in that: The rope reel (401) is provided with a manual rotating handle (403).

8. An efficient micro-water test system according to claim 2, characterized in that: The lower end of the water-permeable outer shell (200) is tapered; the control module comprises a 9V power supply (202), a control switch (203) and a display module (204) which are sequentially connected in signal manner; the positive and negative wires of the varistor (201) are led out through a reeling rope (9) and are connected in series with the 9V power supply (202) and the control switch (203); the varistor (201) is powered on or off by the control switch (203); the varistor (201) is signal-connected to the display module (204), and the water level depth is displayed by the display module (204); the display module (204) has a storage function, stores data with a time step of 1 second, and transmits the data through a water level data output interface (10).

9. An efficient micro-water test method, characterized in that: The test method uses the micro-water test system described in any one of claims 1 to 8 to perform a micro-water test, and the specific test steps are as follows; S1. After the drilling construction is completed, measure the drilling point, check the equipment, and wait for 24 hours for the water level to stabilize and measure its static water level; S2. Remove the core tube, install the water lifting container on the drill pipe through the drill pipe connector, and lower the water lifting container to 3.0-4.0m below the groundwater level according to the normal drilling steps to ensure that the water lifting container can be completely immersed in the groundwater in the borehole. The groundwater in the borehole enters the water storage cavity through the water inlet on the upper part of the water lifting container and fills the water storage cavity; S3. Place the water level sensing probe of the water level meter into the borehole, facing the middle cavity of the inner cylinder of the water lifting container, and lower the reel rope through the electric retractable mechanism, thereby driving the water level sensing probe to pass through the middle cavity of the inner cylinder of the water lifting container and be located below the bottom surface of the water lifting container; S4. Turn on the control switch of the water level meter and check whether the instrument is normal. If the instrument is working normally, you can start the micro-water test; S5. During the test, start the winch of the drilling rig and quickly lift the water container to a position greater than 3.0m. During the lifting process of the water container, the water level sensor probe remains in the same position and automatically measures the change of the water level; S6. After the water level returns to the initial water level, repeat steps S1 to S5 at least three times, collect test data, and complete the micro-water test; S7. After the test is completed, the water level sensing probe is pulled out by controlling the reeling rope to be reeled in through the electric reeling mechanism.

10. An efficient micro-water test method according to claim 9, characterized in that: After the test is completed, the micro-water test data is exported and imported into the professional hydrogeological software AquiferTest for calculation.

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