Hydrogeological exploration groundwater level observation device and method

Abstract

The application discloses a hydrogeological exploration underground water level observation device and method, relates to the technical field of geological exploration, and comprises a probe, the probe comprises a control console and a drill bit, the control console and the drill bit are movably connected, a water level positioning assembly is arranged in the control console, an induction sheet capable of sending signals to a ground terminal when being contacted is arranged on the bottom surface of the control console and the upper end surface of the drill bit, a drill rod is arranged above the probe, a large number of holes for collecting and adhering underground soil layers are densely arranged on the drill rod, the drill rod penetrates through and extends out of the control console and is slidably connected with the control console, the device can accurately measure the position of an underground water layer, including the flow direction of each height in the underground water layer, the height of the underground water layer from the ground, the overall height of the underground water layer and the height of the underground water level, and can sample the explored underground water, so that the composition and content of the underground water can be analyzed in the future.

Description

Technical Field

[0001] This invention relates to the field of geological exploration technology, specifically to a groundwater level observation device and method for hydrogeological exploration. Background Technology

[0002] Geological exploration is a research activity that involves investigating and exploring geology using various means and methods to determine suitable bearing strata, identify foundation types based on the bearing capacity of the bearing strata, and calculate foundation parameters. It also involves investigating and researching the geological conditions of a specific area, including rocks, strata, structures, minerals, hydrology, and geomorphology, to ascertain the quality and quantity of minerals, as well as the technical conditions for their extraction and utilization, and to provide the necessary mineral reserves and geological data for mine construction and design.

[0003] In existing technologies, especially in the field of groundwater level exploration, the general practice is to move drilling rigs and other related equipment to the observation point, drill into the ground, and then take samples from a specified height. This process is repeated at different observation points, and finally the sampled points are connected to obtain the planar extent of the groundwater. However, in reality, it is difficult to measure data such as the height and water level of the groundwater layer.

[0004] Therefore, a groundwater level observation device and method for hydrogeological exploration are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a groundwater level monitoring device and method for hydrogeological exploration, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a groundwater level observation device for hydrogeological exploration: including a probe, the probe including a control console and a drill bit, the control console and the drill bit being movably connected, and a water level positioning component being provided inside the control console, and induction plates being provided on the bottom surface of the control console and the upper surface of the drill bit respectively, which can send signals to a ground terminal when in contact;

[0007] The drill rod is located above the probe. The drill rod has densely packed holes for collecting and adhering underground soil layers. The drill rod extends through the control console and is slidably connected to the control console. The lower end of the drill rod is fixedly connected to the center of the upper end face of the drill bit. The drill rod is square, and a scale for measuring distance is provided on one side wall of the square drill rod.

[0008] Preferably, the water level positioning component includes a control cavity, which consists of four sets corresponding to the four sides of the drill rod. Each control cavity has a rectangular opening at its bottom, through which a wedge with an inclined bevel at its upper end extends and is slidably connected. A control block is slidably connected inside the control cavity, and the control block has an inclined wedge opening whose position matches the wedge block. A connecting plate is fixedly connected to the side of the control block near the drill rod, and a spring is fixedly connected to one side of the connecting plate. The other end of the spring is fixedly connected to the inner wall of the control cavity.

[0009] Preferably, a needle capable of penetrating and fixing itself into the ground is fixedly connected to one side of the control block extending out of the control cavity, and the needles are distributed in a rectangular pattern at equal intervals on one side wall of the control block.

[0010] Preferably, the drill bit has a collection chamber, the top of the inner surface of the collection chamber has a collection port, the side wall of the inner surface of the collection chamber has a drain port, and a sealing piston is plugged into the drain port.

[0011] Preferably, an upper toothed plate is fixedly connected to one side of the bottom of the connecting plate, the upper toothed plate is slidably connected in the control cavity, the upper toothed plate is meshed with a gear, the gear is rotatably connected to the side wall of the control cavity, the side of the gear away from the upper toothed plate is meshed with a lower toothed plate, the lower toothed plate is slidably connected in the control cavity, one end of the lower toothed plate is fixedly connected with a penetrating cotton, and one end of the penetrating cotton abuts against the side wall of the drill rod.

[0012] Preferably, the width of the permeating cotton corresponds to the side length of the drill rod.

[0013] Preferably, the control console has a liquid chamber with four outlets at the bottom, each outlet facing a permeating cotton. The side wall of the liquid chamber has an outlet for injecting liquid dyeing paint, and a sealing piston is plugged into the outlet.

[0014] Preferably, a baffle is fixedly connected to the end of the penetrating cotton away from the drill rod. The baffle is made of rigid material and is fixedly connected to the upper surface of the lower tooth plate.

[0015] Preferably, the control console has a gap, the gap is square and corresponds to the square drill rod, each side of the square gap is fixedly connected to a positioning block, and each side of the drill rod is provided with a positioning groove corresponding to the positioning block for the positioning block to slide in a limited position.

[0016] Preferably, a groundwater level observation method for hydrogeological exploration includes: S1: location positioning and equipment installation: move the device and its drive source to the observation point, vertically face the probe and drill rod towards the observation point, and install the drive source on the control console and the drill rod respectively.

[0017] S2: Preparatory work, trial run: Make the control console and drill bit fit together by driving the control console;

[0018] S3: Groundwater layer location and measurement: Sequentially start the drive source on the control console and drill rod, and finally complete the measurement;

[0019] S4: After the measurement is completed, move the drill rod, drill bit, and control console back to the ground, then observe the data on the drill rod scale and perform calculations.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The present invention enables the accurate measurement of the location of groundwater layers, including the direction of water flow at various heights within the groundwater layer, the height of the groundwater layer above the ground surface, the overall height of the groundwater layer, and the height of the groundwater level. It also enables the sampling of the explored groundwater, facilitating subsequent analysis of the composition and content of the groundwater.

[0022] 2. In this invention, the movement of the control block away from the drill rod will cause the needle fixed on the control block to move synchronously. The needle moves out of the control cavity and pierces the soil layer where the control console is located, thereby fixing the control console on the soil layer above the groundwater layer to facilitate subsequent measurement of the groundwater level.

[0023] 3. In this invention, the drill rod is controlled to move downward by the drive source of the drill rod, while the control console is fixed in the soil layer above the underground upper layer. That is, the permeable cotton in the control console is fixed in place, the drill rod moves downward, and the liquid dyeing coating on the permeable cotton is applied to the outer wall of the drill rod.

[0024] 4. In this invention, the drill rod moves downward and extends into the groundwater in the groundwater layer. The groundwater enters the collection chamber through the collection port, thereby completing the collection of groundwater to facilitate subsequent research on the composition of the groundwater.

[0025] 5. In this invention, the bottom surface of the control console and the upper surface of the drill bit are brought into contact again during the retraction process. At this time, the collection port is blocked by the control console, which can effectively prevent the collected groundwater from containing a large amount of non-groundwater substances, thus affecting the subsequent analysis of groundwater composition and content.

[0026] 6. During the retraction process, the bottom surface of the control console and the upper surface of the drill bit are put into contact again. At this time, the collection port is blocked by the control console, which can effectively prevent the collected groundwater from containing a large amount of non-groundwater substances, thus affecting the subsequent analysis of groundwater composition and content. Attached Figure Description

[0027] Figure 1 This is an overall structural view of the present invention;

[0028] Figure 2 This is a top view of the entire invention;

[0029] Figure 3 This is a cross-sectional view of the present invention;

[0030] Figure 4 This is a cross-sectional view of the present invention;

[0031] Figure 5 This is a partial cross-sectional view of the present invention;

[0032] Figure 6 This is a partial sectional view of the rotating rod of the present invention;

[0033] Figure 7 This is a schematic diagram showing the location of the groundwater layer from the surface to the groundwater layer according to the present invention.

[0034] In the picture:

[0035] 1. Probe; 11. Control console; 12. Drill bit; 2. Drill rod; 21. Scale; 3. Control chamber; 31. Rectangular opening; 32. Wedge block; 33. Control block; 34. Connecting plate; 35. Spring; 36. Wedge opening; 4. Needle; 5. Collection chamber; 51. Collection port; 52. Drain; 53. Sealing piston one; 6. Upper toothed plate; 61. Gear; 62. Lower toothed plate; 63. Permeable cotton; 7. Liquid chamber; 71. Liquid outlet; 72. Sealing piston two; 8. Baffle; 9. Gap; 91. Positioning groove; 92. Positioning block. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1 to 7 The present invention provides a technical solution:

[0038] A groundwater level observation device for hydrogeological exploration includes a probe 1. The probe 1 includes a control console 11 and a drill bit 12. The control console 11 and the drill bit 12 are movably connected. A water level positioning component is provided inside the control console 11. The bottom surface of the control console 11 and the upper surface of the drill bit 12 are respectively provided with sensing plates that can send signals to a ground terminal when in contact.

[0039] The drill rod 2 is located above the probe 1. The drill rod 2 has densely packed holes for collecting and adhering underground soil layers. The drill rod 2 extends through the control console 11 and is slidably connected to the control console 11. The lower end of the drill rod 2 is fixedly connected to the center of the upper end face of the drill bit 12. The drill rod 2 is square, and a scale 21 for measuring distance is provided on one side wall of the square drill rod 2.

[0040] As an embodiment of the present invention, as shown in the figure, the water level positioning component includes a control cavity 3. There are four sets of control cavities 3, each corresponding to one of the four sides of the drill rod 2. Each control cavity 3 has a rectangular opening 31 at its bottom. A wedge block 32 with an inclined bevel at its upper end extends through and is slidably connected to the rectangular opening 31. A control block 33 is slidably connected inside the control cavity 3. A wedge opening 36 is provided on the control block 33. The position of the wedge opening 36 matches that of the wedge block 32. A connecting plate 34 is fixedly connected to the side of the control block 33 near the drill rod 2. A spring 35 is fixedly connected to one side of the connecting plate 34. The other end of the spring 35 is fixedly connected to the inner wall of the control cavity 3.

[0041] The control block 33 has a fixed connection to a needle 4 that can penetrate into the ground and be fixed on one side of the control cavity 3. The needles 4 are distributed in a rectangular pattern with equal spacing on one side wall of the control block 33.

[0042] During operation, the control console 11 moves downward via the drive source. The control console 11, drill rod 2, and drill bit 12, which is fixedly connected to the drill rod 2, move downward. When the drill bit 12 contacts the ground, due to the ground's constraint on the drill bit 12, the control console 11 moves downward, causing the inclined wedge 36 in the control block 33 to move downward and contact the inclined wedge block 32. The wedge block 32 then presses the wedge 16, causing it to move towards the drill rod 2. The needle 4, which is fixedly connected to one end of the control block 33, moves and extends into the control cavity 3. This ensures that the control console 11 and the drill bit 12 remain in contact during the probe 1's underground movement. This prevents the probe 1 from bringing substances into the collection cavity 5 during its movement, which would otherwise result in the collected groundwater containing more substances not found in the groundwater, thus affecting the subsequent analysis of the groundwater's composition and content.

[0043] At this time, when the control console 11 and the drill bit 12 are in contact, the sensing plates on the bottom surface of the control console 11 and the upper surface of the drill bit 12 are in contact and send a signal to the ground terminal. At this time, the first contact between the two sensing plates sends out the first signal. The first signal indicates that the control console 11 and the drill bit 12 are in good contact and the preparation work is completed. Drilling into the ground to explore groundwater can begin.

[0044] The drive source of the control console 11 drives the console 11 to move downward. The console 11, drill rod 2 and drill bit 12 fixedly connected to the drill rod 2 drill into the ground and move downward in the stratum. When it comes into contact with the groundwater layer, the drill bit 12 first extends into the groundwater layer and separates from the upper soil layer. At this time, the console 11 is still in the underground soil layer. At this time, the drill bit 12 loses the pressure of the underground soil layer and rebounds under the action of the spring 35, causing the control block 33 and the inclined wedge 36 on the control block 33 to move away from the drill rod 2, thereby squeezing the inclined wedge block 32 to move downward. The inclined wedge block 32 is fixedly connected to the drill bit 12 and moves downward.

[0045] The movement of the control block 33 away from the drill rod 2 will cause the needle 4 fixed on the control block 33 to move synchronously. The needle 4 moves out of the control cavity 3 and pierces the soil layer where the control console 11 is located, thereby fixing the control console 11 on the soil layer above the groundwater layer, so as to facilitate the subsequent measurement of the groundwater level.

[0046] As an embodiment of the present invention, as shown in the figure, the drill bit 12 has a collection cavity 5, the top of the inner surface of the collection cavity 5 has a collection port 51, the side wall of the inner surface of the collection cavity 5 has a drain port 52, and a sealing piston 53 is plugged in the drain port 52.

[0047] An upper toothed plate 6 is fixedly connected to one side of the bottom of the connecting plate 34. The upper toothed plate 6 is slidably connected in the control cavity 3. A gear 61 is meshed with the upper toothed plate 6. The gear 61 is rotatably connected to the side wall of the control cavity 3. A lower toothed plate 62 is meshed with the side of the gear 61 away from the upper toothed plate 6. The lower toothed plate 62 is slidably connected in the control cavity 3. A penetrating cotton 63 is fixedly connected to one end of the lower toothed plate 62. One end of the penetrating cotton 63 abuts against the side wall of the drill rod 2.

[0048] The width of the permeable cotton 63 corresponds to the side length of the drill rod 2.

[0049] The control console 11 has a liquid chamber 7, and the bottom of the liquid chamber 7 has four outlets, each of which is directly opposite a permeation cotton 63. The side wall of the liquid chamber 7 has an outlet 71 for injecting liquid dyeing paint, and a sealing piston 72 is plugged in the outlet 71.

[0050] During operation, liquid dyeing paint is placed in the liquid chamber 7. The liquid dyeing paint is absorbed by the penetrating cotton 63 through the outlet. The movement of the control block 33 away from the drill rod 2 will drive the upper toothed plate 6, which is fixedly connected to the control block 33 through the connecting plate 34, to move synchronously. The upper toothed plate 6 moves the lower toothed plate 62 towards the drill rod 2 through the meshing of the gear 61. The penetrating cotton 63, which is fixedly connected to the lower toothed plate 62, moves and finally contacts and adheres to the side wall of the drill rod 2.

[0051] When the control console 11 is fixed on the soil layer above the groundwater layer and the drill bit 12 moves downward, the sensing plate on the bottom surface of the control console 11 and the upper surface of the drill bit 12 disengages from contact. At the moment of disengagement, the sensing plate is located at the top of the groundwater layer. At this time, the sensing plate sends a second signal to the ground terminal. After the ground terminal receives the signal, it stops the drive source of the control console 11 and controls the drive source of the drill rod 2 to work.

[0052] At this time, the drive source of the drill rod 2 is working to control the drill rod 2 to move downward, while the control console 11 is fixed in the soil layer above the underground upper layer. That is, at this time, the permeable cotton 63 inside the control console 11 is fixed in place, the drill rod 2 moves downward, and the liquid dyeing paint on the permeable cotton 63 is applied to the outer wall of the drill rod 2.

[0053] Continue driving the drill rod 2 downwards, the drill rod 2 moves downwards and extends into the groundwater in the groundwater layer, the groundwater enters the collection chamber 5 through the collection port 51, thus completing the collection of groundwater, so as to facilitate the subsequent study of groundwater composition;

[0054] Continue driving the drill rod 2 downward. After it reaches the bottom of the groundwater layer, the drill bit 12 continues to move downward. After it extends into the underground soil layer at the bottom of the groundwater layer and the drill rod 2 also extends into the underground soil layer, the drive source of the drill rod 2 and the drive source of the control console 11 are controlled to move back according to the above principle and finally reach the ground.

[0055] During the retraction process, the bottom surface of the control console 11 and the upper surface of the drill bit 12 are put into contact again. At this time, the collection port 51 is blocked by the control console 11, which can effectively prevent the collected groundwater from containing a lot of non-groundwater substances, thus affecting the subsequent analysis of groundwater composition and content.

[0056] During the retraction process, as the bottom surface of the control console 11 and the upper surface of the drill bit 12 come into contact again, the penetrating cotton 63 retracts and no longer contacts the side wall of the drill rod 2, and no longer applies liquid dyeing paint to the drill rod 2, so as to ensure accurate judgment of the water flow direction after the drill rod 2 is retracted to the ground.

[0057] During the retraction process, as the bottom surface of the control console 11 and the upper surface of the drill bit 12 come into contact again, the needle 4 moves back into the control cavity 3, thereby releasing the fixation of the control console 11 so that the probe 1 and other parts can return to the ground smoothly.

[0058] After the drill bit 12, control console 11, drill rod 2, etc. are moved back to the ground, the groundwater in the collection chamber 5 can be extracted by opening the sealing piston 53, thus completing the groundwater sampling.

[0059] A baffle 8 is fixedly connected to the end of the penetrating cotton 63 away from the drill rod 2. The baffle 8 is made of rigid material and is fixedly connected to the upper end face of the lower tooth plate 62.

[0060] The control console 11 has a gap 9, which is square and corresponds to the square drill rod 2. A positioning block 92 is fixedly connected to each side of the square gap 9. A positioning groove 91 is provided on each side of the drill rod 2 corresponding to the positioning block 92, which allows the positioning block 92 to slide in a limited position.

[0061] During operation, the gap 9 is designed so that when the drill rod 2 is moved back, the liquid dye coating on the drill rod 2 will not come into contact with the inner wall of the control console 11, thus preserving its state after being submerged in groundwater, which is convenient for subsequent analysis. After the drill bit 12, control console 11, drill rod 2, etc. are moved back to the ground, due to the impact of the groundwater flow on the side wall of the drill rod 2 coated with liquid dye coating, the liquid dye coating on the side wall of the drill rod 2 facing the direction of water flow is the lightest, while the liquid dye coating on the side wall of the drill rod 2 facing away from the direction of water flow is the darkest. In other words, the direction of water flow at this location is from the lightest liquid dye coating to the darkest liquid dye coating, which can be used to determine the direction of water flow in the groundwater layer.

[0062] After the drill bit 12, control console 11, drill rod 2, etc. are moved back to the ground, the reading of scale 21 on the drill rod 2 exposed on the ground when the drill bit 12 is moved down to the maximum depth is ha, and the reading of scale 21 on the ground when the drill bit 12 is moved down to the top of the groundwater layer when the first signal is received is hb; that is, the height h1 of the groundwater layer from the ground is obtained: h1 = ha - hb;

[0063] When the drill bit 12 is moved down to the deepest point, the soil layer at the bottom of the groundwater layer will enter the hole of the drill rod 2. At this time, the uppermost soil layer at the bottom of the groundwater layer in the hole is the water bottom of the groundwater layer. The scale 21 reading is hc, which gives the overall height of the groundwater layer h2: h2 = hb - hc.

[0064] When the drill bit 12 is lowered to its deepest point, after being scourd by groundwater, the liquid dyeing paint on the side wall of the drill rod 2 facing the direction of water flow is the lightest, while the liquid dyeing paint on the side wall of the drill rod 2 facing away from the direction of water flow is the darkest. In other words, after being impacted by the water flow, the liquid dyeing paint on the drill rod 2 on the same plane has different shades. Let the reading of the plane (i.e., the water surface of the groundwater layer, i.e., the water level) with the same shades of liquid dyeing paint on the drill rod 2 be hd, that is, the height of the groundwater level h3: h3 = hd - hc;

[0065] This device can accurately measure the location of groundwater layers, including the direction of water flow at various heights within the groundwater layer, the height of the groundwater layer above the ground surface, the overall height of the groundwater layer, and the groundwater level. It can also sample the explored groundwater to facilitate subsequent analysis of its composition and content.

[0066] A groundwater level observation method for hydrogeological exploration includes: S1: location positioning and equipment installation: move the device and its drive source to the observation point, vertically face the probe 1 and drill rod 2 towards the observation point, and install the drive source on the control console 11 and the drill rod 2 respectively.

[0067] S2: Preparatory work, trial run: Make the control console 11 and drill bit 12 fit together by driving the control console 11.

[0068] S3: Groundwater layer location and measurement: Sequentially start the drive source on the control console 11 and drill rod 2, and finally complete the measurement;

[0069] S4: After the measurement is completed, move the drill rod 2, drill bit 12, and control console 11 back to the ground, then observe the data on scale 21 on the drill rod 2 and perform calculations.

[0070] Working principle: When groundwater level needs to be observed, the device and its driving source are moved to the observation point. Probe 1 and drill rod 2 are vertically aligned with the observation point. Both control console 11 and drill rod 2 are connected to driving sources that move them downwards. The bottom surface of control console 11 and the upper surface of drill bit 12 are respectively equipped with induction plates that can send signals to the ground terminal when in contact. During operation, the driving source controls control console 11 to move downwards. Control console 11, drill rod 2, and drill bit 12, which is fixedly connected to drill rod 2, move downwards. When drill bit 12 contacts the ground, due to the ground's constraint on drill bit 12, the downward movement of control console 11 causes the inclined wedge 36 in control block 33 to move downwards. The probe 1 makes contact with the inclined wedge block 32 and is squeezed by the inclined wedge block 32, thus moving towards the drill rod 2. The needle 4, which is fixedly connected to one end of the control block 33, moves and extends into the control cavity 3. The upper toothed plate 6, which is fixedly connected to one end of the control block 33 through the connecting plate 34, moves. Through the meshing of the gear 61, the lower toothed plate 62 is driven to move away from the drill rod 2. This ensures that the control console 11 and the drill bit 12 are always in contact during the underground movement of the probe 1, so as to prevent the probe 1 from bringing the material in the process into the collection cavity 5 during the movement, which would cause the collected groundwater to contain more non-groundwater substances, thus affecting the subsequent analysis of the composition and content of groundwater.

[0071] At this time, when the control console 11 and the drill bit 12 are in contact, the sensing plates on the bottom surface of the control console 11 and the upper surface of the drill bit 12 are in contact and send a signal to the ground terminal. At this time, the first contact between the two sensing plates sends out the first signal. The first signal indicates that the control console 11 and the drill bit 12 are in good contact and the preparation work is completed. Drilling into the ground to explore groundwater can begin.

[0072] The drive source connected to the control console 11 continues to drive the control console 11 to move downward. The control console 11, drill rod 2 and drill bit 12 fixedly connected to the drill rod 2 drill into the ground and move downward in the stratum. When it comes into contact with the groundwater layer, the drill bit 12 first extends into the groundwater layer and separates from the upper soil layer. At this time, the control console 11 is still in the underground soil layer. At this time, the drill bit 12 loses the pressure of the underground soil layer and rebounds under the action of the spring 35, causing the control block 33 and the inclined wedge 36 on the control block 33 to move away from the drill rod 2, thereby squeezing the inclined wedge block 32 to move downward. The inclined wedge block 32 is fixedly connected to the drill bit 12 and moves downward.

[0073] The movement of the control block 33 away from the drill rod 2 will cause the needle 4 fixed on the control block 33 to move synchronously. The needle 4 moves out of the control cavity 3 and pierces the soil layer where the control console 11 is located, thereby fixing the control console 11 on the soil layer above the groundwater layer, so as to facilitate the subsequent measurement of the groundwater level.

[0074] Liquid dyeing paint is placed in the liquid chamber 7. The liquid dyeing paint is absorbed by the penetrating cotton 63 through the outlet. The movement of the control block 33 away from the drill rod 2 will drive the upper toothed plate 6, which is fixedly connected to the control block 33 through the connecting plate 34, to move synchronously. The upper toothed plate 6 moves the lower toothed plate 62 towards the drill rod 2 through the meshing of the gear 61. The penetrating cotton 63, which is fixedly connected to the lower toothed plate 62, moves and finally contacts and adheres to the side wall of the drill rod 2.

[0075] When the control console 11 is fixed on the soil layer above the groundwater layer and the drill bit 12 moves downward, the sensing plate on the bottom surface of the control console 11 and the upper surface of the drill bit 12 disengages from contact. At the moment of disengagement, the sensing plate is located at the top of the groundwater layer. At this time, the sensing plate sends a second signal to the ground terminal. After the ground terminal receives the signal, it stops the drive source of the control console 11 and controls the drive source of the drill rod 2 to work.

[0076] At this time, the drive source of the drill rod 2 is working to control the drill rod 2 to move downward, while the control console 11 is fixed in the soil layer above the underground upper layer. That is, at this time, the permeable cotton 63 inside the control console 11 is fixed in place, the drill rod 2 moves downward, and the liquid dyeing paint on the permeable cotton 63 is applied to the outer wall of the drill rod 2.

[0077] Continue driving the drill rod 2 downwards, the drill rod 2 moves downwards and extends into the groundwater in the groundwater layer, the groundwater enters the collection chamber 5 through the collection port 51, thus completing the collection of groundwater, so as to facilitate the subsequent study of groundwater composition;

[0078] Continue driving the drill rod 2 downward. After it reaches the bottom of the groundwater layer, the drill bit 12 continues to move downward. After it extends into the underground soil layer at the bottom of the groundwater layer and the drill rod 2 also extends into the underground soil layer, the drive source of the drill rod 2 and the drive source of the control console 11 are controlled to move back according to the above principle and finally reach the ground.

[0079] During the retraction process, the bottom surface of the control console 11 and the upper surface of the drill bit 12 are put into contact again. At this time, the collection port 51 is blocked by the control console 11, which can effectively prevent the collected groundwater from containing a lot of non-groundwater substances, thus affecting the subsequent analysis of groundwater composition and content.

[0080] During the retraction process, as the bottom surface of the control console 11 and the upper surface of the drill bit 12 come into contact again, the penetrating cotton 63 retracts and no longer contacts the side wall of the drill rod 2, and no longer applies liquid dyeing paint to the drill rod 2, so as to ensure accurate judgment of the water flow direction after the drill rod 2 is retracted to the ground.

[0081] During the retraction process, as the bottom surface of the control console 11 and the upper surface of the drill bit 12 come into contact again, the needle 4 moves back into the control cavity 3, thereby releasing the fixation of the control console 11 so that the probe 1 and other parts can return to the ground smoothly.

[0082] After the drill bit 12, control console 11, drill rod 2, etc. are moved back to the ground, the groundwater in the collection chamber 5 can be extracted by opening the sealing piston 53, thus completing the groundwater sampling.

[0083] The design of the gap 9 is to prevent the liquid dyeing coating on the drill rod 2 from contacting the inner wall of the control console 11 when the drill rod 2 moves back, so that it retains its state after being submerged in groundwater, which is convenient for subsequent analysis.

[0084] After the drill bit 12, control console 11, drill rod 2, etc. are moved back to the ground, due to the impact of the water flow in the groundwater layer on the side wall of the drill rod 2 coated with liquid dye, the color of the liquid dye on the side wall of the drill rod 2 facing the direction of water flow is the lightest, while the color of the liquid dye on the side wall of the drill rod 2 facing away from the direction of water flow is the darkest. In other words, the direction of water flow at this location is from the lightest color of the liquid dye to the darkest color of the liquid dye, which can be used to determine the direction of water flow in the groundwater layer.

[0085] After the drill bit 12, control console 11, drill rod 2, etc. are moved back to the ground, the reading of scale 21 on the drill rod 2 exposed on the ground when the drill bit 12 is moved down to the maximum depth is ha, and the reading of scale 21 on the ground when the drill bit 12 is moved down to the top of the groundwater layer when the first signal is received is hb; that is, the height h1 of the groundwater layer from the ground is obtained: h1 = ha - hb;

[0086] When the drill bit 12 is moved down to the deepest point, the soil layer at the bottom of the groundwater layer will enter the hole of the drill rod 2. At this time, the uppermost soil layer at the bottom of the groundwater layer in the hole is the water bottom of the groundwater layer. The scale 21 reading is hc, which gives the overall height of the groundwater layer h2: h2 = hb - hc.

[0087] When the drill bit 12 is lowered to its deepest point, after being scourd by groundwater, the liquid dyeing paint on the side wall of the drill rod 2 facing the direction of water flow is the lightest, while the liquid dyeing paint on the side wall of the drill rod 2 facing away from the direction of water flow is the darkest. In other words, after being impacted by the water flow, the liquid dyeing paint on the drill rod 2 on the same plane has different shades. Let the reading of the plane (i.e., the water surface of the groundwater layer, i.e., the water level) with the same shades of liquid dyeing paint on the drill rod 2 be hd, that is, the height of the groundwater level h3: h3 = hd - hc;

[0088] This device can accurately measure the location of groundwater layers, including the direction of water flow at various heights within the groundwater layer, the height of the groundwater layer above the ground surface, the overall height of the groundwater layer, and the height of the groundwater level. It can also sample the explored groundwater to facilitate subsequent analysis of its composition and content.

[0089] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A groundwater level monitoring device for hydrogeological exploration, characterized in that, include: The probe (1) includes a control console (11) and a drill bit (12). The control console (11) and the drill bit (12) are movably connected. A water level positioning component is provided inside the control console (11). The bottom surface of the control console (11) and the upper surface of the drill bit (12) are respectively provided with a sensor plate that can send a signal to the ground terminal when in contact. A drill rod (2) is placed above the probe (1). The drill rod (2) has densely arranged pores for collecting and adhering underground soil layers. The drill rod (2) extends through the control console (11) and is slidably connected to the control console (11). The lower end of the drill rod (2) is fixedly connected to the center of the upper end face of the drill bit (12). The drill rod (2) is square, and a scale (21) for measuring distance is provided on one side wall of the square drill rod (2). The water level positioning component includes a control cavity (3), which consists of four sets and corresponds one-to-one with the four sides of the drill rod (2). Each control cavity (3) has a rectangular opening (31) at its bottom. A wedge block (32) with an inclined bevel at its upper end extends through and is slidably connected to the rectangular opening (31). The wedge block (32) is fixedly connected to the drill bit (12). A control block (33) is slidably connected inside the control cavity (3). A wedge opening (36) is provided on the control block (33). The position of the wedge opening (36) matches that of the wedge block (32). A connecting plate (34) is fixedly connected to the side of the control block (33) closest to the drill rod (2). A spring (35) is fixedly connected to one side of the connecting plate (34). The other end of the spring (35) is fixedly connected to the inner wall of the control cavity (3). The control block (33) has a needle (4) that can be inserted into the ground and fixed on one side of the control cavity (3). The needles (4) are distributed in a rectangular pattern at equal intervals on one side wall of the control block (33). The drill bit (12) has a collection chamber (5) inside, a collection port (51) is provided on the top of the inner surface of the collection chamber (5), a drain port (52) is provided on the side wall of the inner surface of the collection chamber (5), and a sealing piston (53) is plugged in the drain port (52). An upper toothed plate (6) is fixedly connected to one side of the bottom of the connecting plate (34). The upper toothed plate (6) is slidably connected in the control cavity (3). The upper toothed plate (6) is meshed with a gear (61). The gear (61) is rotatably connected to the side wall of the control cavity (3). The side of the gear (61) away from the upper toothed plate (6) is meshed with a lower toothed plate (62). The lower toothed plate (62) is slidably connected in the control cavity (3). One end of the lower toothed plate (62) is fixedly connected with a penetrating cotton (63). One end of the penetrating cotton (63) abuts against the side wall of the drill rod (2). The width of the permeation cotton (63) corresponds to the side length of the drill rod (2); The control console (11) has a liquid chamber (7) with four outlets at the bottom. Each outlet is directly opposite a penetrating cotton (63). The side wall of the liquid chamber (7) has an outlet (71) for injecting liquid dyeing paint. A sealing piston (72) is plugged in the outlet (71).

2. The groundwater level monitoring device for hydrogeological exploration according to claim 1, characterized in that: The end of the penetrating cotton (63) away from the drill rod (2) is fixedly connected to a baffle (8), the baffle (8) is made of hard material and is fixedly connected to the upper end face of the lower tooth plate (62).

3. The groundwater level monitoring device for hydrogeological exploration according to claim 2, characterized in that: The control console (11) has a gap (9), which is square and corresponds to the square drill rod (2). A positioning block (92) is fixedly connected to each side of the square gap (9). A positioning groove (91) is provided on each side of the drill rod (2) corresponding to the positioning block (92) for the positioning block (92) to slide in a limited position.

4. A method for observing groundwater levels in hydrogeological exploration, applied to the groundwater level observation device for hydrogeological exploration as described in claim 3, characterized in that, The groundwater level observation methods for hydrogeological exploration include: S1: Positioning and equipment installation: Move the device and its drive source to the observation point, align the probe (1) and drill rod (2) vertically with the observation point, and install the drive sources on the control console (11) and drill rod (2) respectively. S2: Preparatory work, trial run: Make the console (11) and the drill bit (12) fit together by driving the console (11); S3: Groundwater layer location and measurement: Sequentially start the drive source on the control console (11) and drill bit (2). When the control console (11) and drill bit (12) are in contact, the sensing plates on the bottom surface of the control console (11) and the upper surface of the drill bit (12) are in contact and send a signal to the ground terminal. At this time, the first contact of the two sensing plates sends the first signal. The first signal indicates that the control console (11) and drill bit (12) are in good contact and the preparation work is completed. Start drilling into the ground to explore the groundwater. Control the drive source connected to the control console (11) to drive the control console (11) to move downward. When the control console (11) is fixed on the soil layer above the groundwater layer and the drill bit (12) moves downward, the control source will then send a signal to the ground terminal. The sensor plates on the bottom surface of the control platform (11) and the upper surface of the drill bit (12) are out of contact. When they are out of contact, the sensor plates are located at the top of the groundwater layer. At this time, the sensor plates send a second signal to the ground terminal. After the ground terminal receives the signal, it stops the drive source of the control console (11) and controls the drive source of the drill rod (2) to work. After moving to the bottom of the groundwater layer, the drill bit (12) continues to move downward. After it extends into the underground soil layer at the bottom of the groundwater layer and the drill rod (2) also extends into the underground soil layer, the drive source of the drill rod (2) and the drive source of the control console (11) are controlled in sequence to move the drill rod (2) and the control console (11) back to the ground. S4: After the drill bit (12), control console (11), and drill rod (2) are moved back to the ground, when the drill bit (12) is moved down to the maximum depth, the reading of the scale (21) on the drill rod (2) exposed on the ground is ha, and when the drill bit (12) is moved down to the point where the first signal is received, the reading of the scale (21) at the top of the groundwater layer is hb; that is, the height h1 of the groundwater layer from the ground is obtained: h1=ha-hb; when the drill bit (12) is moved down to the deepest point, the soil layer at the bottom of the groundwater layer will enter the hole of the drill rod (2), and at this time there is the scale (21) at the top of the soil layer at the bottom of the groundwater layer, that is, the bottom of the groundwater layer. The reading is hc, which gives the overall height of the groundwater layer h2: h2 = hb - hc; When the drill bit (12) is moved down to the deepest point, after being washed by the groundwater, the liquid dyeing paint on the side wall of the drill rod (2) facing the direction of the water flow is the lightest, while the liquid dyeing paint on the side wall of the drill rod (2) facing away from the direction of the water flow is the darkest. That is to say, after being impacted by the water flow, the liquid dyeing paint on the drill rod (2) on the same plane is of different shades. Let the reading of the plane with the same shade of liquid dyeing paint on the drill rod (2) be hd, which gives the height of the groundwater level h3: h3 = hd - hc.

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