Hydrogeological exploration device for water disaster prevention and control

Abstract

The hydrogeological exploration device comprises two oil cylinders fixed to a base in the vertical direction, the tail ends of the two oil cylinders are jointly connected with a mounting plate, a motor is mounted at the upper end of the mounting plate, a motor shaft of the motor penetrates through the mounting plate and then is fixedly provided with a connecting sleeve, a drill rod is detachably connected with the connecting sleeve, and the drill rod is fixedly connected with the mounting plate. The drill rod comprises a head drill rod, a tail drill rod and a plurality of middle drill rods, a water collecting groove is formed in the tail drill rod in the axial direction, the position, close to the drill bit, of the circumferential face of the tail drill rod is concaved inwards in the radial direction to form a groove, and two water inlet holes are formed in the top of the groove and communicated with the water collecting groove. The whole sampling structure is simple, power equipment does not need to be additionally arranged, sampling can be carried out immediately after drilling is finished, the cost is reduced, and meanwhile the sampling efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine water hazard prevention and control, and in particular to a hydrogeological exploration device for water hazard prevention and control. Background Art

[0002] In the production activities of coal mines, the occurrence of water disasters will lead to the destruction of the mine and the ground hydrogeological environment, which will not only cause property losses, but also threaten the lives of personnel. Therefore, the research on mine water disaster prevention and control technology is of great significance. Through comprehensive research on the hydrogeological conditions around the mine and inside the ore deposit, understanding the distribution, flow direction and pressure of groundwater, and formulating corresponding prevention and control measures, the occurrence of water disasters can be reduced.

[0003] At present, when conducting hydrogeological exploration, the rock formation is first drilled by a drilling rig. After the drilling is completed, the drill rod is removed from the hole, and then the water quality sampling device is extended along the borehole to reach the groundwater to complete the sampling. However, during the drilling process, due to the thickness of the rock formation, the drill rods need to be combined in sequence to complete the drilling of deep holes. Since the drill rods are drilled in the underground direction, the weight of the combined drill rods is large. When the drill rods drill through the rock formation, the rock formation loses the obstruction to the entire drill rod combination. At this time, the friction between the drill rod head and the drill rig (the drill rod head is a prismatic structure inserted in the rotating part of the drill rig) is much smaller than the gravity of the entire drill rod combination, which will cause the drill rod to fall off the drill rig and fall into the groundwater. In addition, if the drill rods are taken out of the borehole one by one, and then the water quality sampling device is lowered into the groundwater, this will also cause the water extraction process to be prolonged. Summary of the invention

[0004] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a hydrogeological exploration device for water hazard prevention and control.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydrogeological exploration device for water hazard prevention and control, comprising two oil cylinders fixed on a base in a vertical direction, the ends of the two oil cylinders are commonly connected to a mounting plate, a motor is installed on the upper end of the mounting plate, a motor shaft of the motor passes through the mounting plate and is fixed with a connecting sleeve, a drill rod is detachably connected to the connecting sleeve, the drill rod comprises a head drill rod, a tail drill rod and a plurality of middle drill rods, a water collecting groove is formed inside the tail drill rod along the axial direction, a groove is formed inwardly along the radial direction at a position close to the drill bit on the circumferential surface thereof, and two water inlet holes are provided at the top of the groove to communicate with the water collecting groove;

[0006] An upper sliding ring and a lower sliding ring are sleeved on the outside of the groove. The upper sliding ring is located at the top of the groove and is slidably connected thereto. The lower sliding ring is located at the bottom of the groove and is fixedly connected thereto. The upper sliding ring and the lower sliding ring are connected to the upper connecting rod through two sets of lower connecting rods. One end of the lower connecting rod is hingedly connected to the lower ring, and the other end is hingedly connected to the upper connecting rod. The other end of the upper connecting rod is hingedly connected to the upper sliding ring.

[0007] It also includes an upper clamp arranged at the lower end of the mounting plate for clamping the head drill rod, and the upper clamp can rotate synchronously with the head drill rod.

[0008] Preferably, a limit snap ring is fixed to the outside of the groove below the upper sliding ring, the limit snap ring is used to limit the downward sliding distance of the upper sliding ring, and an avoidance notch adapted to the upper connecting rod is formed on the limit snap ring.

[0009] Preferably, the clamp includes a second outer fixing ring and a second rotating plate rotatably nested inside the second outer fixing ring.

[0010] The second outer fixing ring is fixedly suspended at the lower end of the mounting plate through a connecting pipe;

[0011] The second rotating plate is concentrically arranged with the connecting sleeve, the head drill rod passes through the second rotating plate and is connected with the connecting sleeve, four second arc-shaped clamping blocks are distributed in an annular manner inside the second rotating plate, and each second arc-shaped clamping block has an arc-shaped structure adapted to the head drill rod on one side facing the center of the second rotating plate, and the lower end surface of each second arc-shaped clamping block has an inclined structure;

[0012] Two cylinders are installed on the upper end surface of the second rotating plate in the vertical direction, and the piston rods of the cylinders penetrate the second rotating plate and are fixedly connected to the second annular pressure plate.

[0013] Preferably, a first through groove is provided inside the second arc-shaped clamping block, and a second guide rod is distributed in the first through groove along its axial direction. One end of the second guide rod passes through the outside of the second arc-shaped clamping block and is fixedly connected to the inner wall of the second rotating plate, and the other end extends to the inside of the first through groove and is fixedly connected to the first baffle.

[0014] Preferably, a third spring is sleeved on the outside of the second guide rod, one end of the third spring is connected to the first baffle, and the other end of the third spring is connected to the inner wall of the first through groove.

[0015] Preferably, it also includes a lower clamp arranged on the base, and the lower clamp is used to clamp the middle drill rod during the process of taking it out.

[0016] Preferably, the lower fixture comprises a first outer fixing ring fixed on the base, and a first rotating plate is rotatably mounted on the inner side of the first outer fixing ring;

[0017] Four first arc-shaped clamping blocks are distributed in an annular manner inside the first rotating plate, each of which is radially slidably installed in the slide groove of the first rotating plate, and the first arc-shaped clamping block has an arc-shaped structure adapted to the middle drill rod on one side facing the axis of the first rotating plate, and an inclined structure on the top;

[0018] A first annular pressure plate is arranged above the first outer fixing ring to apply force to the first arc-shaped clamping block. By driving the first annular pressure plate to move in the vertical direction to act on the first arc-shaped clamping block, all the first arc-shaped clamping blocks are synchronously moved toward the middle drill pipe to clamp it.

[0019] Preferably, a second through groove is opened radially inside the first arc-shaped clamping block, and a first guide rod is slid inside the second through groove along its length direction. One end of the first guide rod passes through the first arc-shaped clamping block and is fixedly connected to the inner wall of the slide groove, and the other end extends to the inside of the second through groove and is fixed with a second baffle. The inner diameter of the second through groove is adapted to the diameter of the second baffle.

[0020] Preferably, a second spring is sleeved on the outside of the first guide rod, one end of the second spring is connected to the second baffle, and the other end of the second spring is connected to the slot wall of the second through slot.

[0021] Preferably, a distance sensor is installed on one side of the second annular pressure plate;

[0022] An electric telescopic rod is embedded in the first rotating plate, and its movable end is connected to the first annular pressing plate. The movable end of the electric telescopic rod is also sleeved with a first spring, one end of the first spring is connected to the first annular pressing plate, and the other end is connected to the fixed end of the electric telescopic rod;

[0023] The distance sensor is connected to the electric telescopic rod signal. When the distance sensor detects that the upper clamp clamps the head drill rod, the electric telescopic rod is in a power-off state. When the distance sensor detects that the upper clamp is in a release state for the head drill rod, the electric telescopic rod is powered on to enable the lower clamp to clamp the middle drill rod.

[0024] Compared with the prior art, the present invention provides a hydrogeological exploration device for water disaster prevention and control, which has the following beneficial effects:

[0025] (1) The present invention sets the tail drill rod to be hollow, and opens a water inlet hole at the top of the groove part thereof. The upper sliding ring on the groove can slide along the groove by itself through the cooperation of the upper connecting rod and the lower connecting rod. In the early stage of drilling, the tail drill rod will slide upward under the action of the rock layer to block the water inlet hole. When the tail drill rod is extended into the groundwater, the upper sliding ring slides down to the limit clamp ring under the action of gravity, and sampling can be carried out by itself at this time. When the tail drill rod is taken out, the upper sliding ring slides upward again under the action of the rock layer to seal the water inlet hole, thereby isolating the water collection tank from the outside and preventing debris in the borehole from entering the water collection tank. The entire sampling structure is simple and can be completed without the need for additional power equipment. Sampling can be carried out immediately after drilling is completed, which reduces costs and improves sampling efficiency.

[0026] (2) During the drilling process of the drill rod in the present invention, the upper clamp is always in a clamping state for the head drill rod, and can also keep synchronous rotation with the drill rod, so as to prevent the entire drill rod from being detached from the connecting sleeve and falling into the groundwater at the moment when the tail drill rod penetrates the rock formation. The setting of the lower clamp can replace manual operation to apply a pulling force to the middle drill rod, and cooperate with the upper clamp to mechanically complete the removal of the middle drill rod, so that the operator can quickly complete the whole set of operation processes of drilling, sampling and removing the drill rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 A schematic diagram of the entire device in the drilling process in the embodiment;

[0029] Figure 2 for Figure 1 A schematic front view of the entire device;

[0030] Figure 3 A schematic diagram of the three-dimensional structure of the tail drill rod in the embodiment;

[0031] Figure 4 It is a three-dimensional schematic diagram of a partial cutaway of the tail drill rod in the embodiment;

[0032] Figure 5 It is a schematic diagram of the upper slip ring of the tail drill pipe in the embodiment sliding freely onto the limit clamp ring;

[0033] Figure 6 This is a schematic diagram of the action of the upper slip ring after the tail drill rod collects the water sample and enters the rock formation in the embodiment;

[0034] Figure 7Schematic diagram of the distribution of the first arc-shaped clamping block in the first rotating plate in the embodiment;

[0035] Figure 8 Schematic diagram of the assembly of the first outer fixed ring, the first rotating plate and the first annular pressure plate in the embodiment

[0036] Fig. 9 This is a schematic diagram of the assembly of the upper clamp at the bottom of the mounting plate in the embodiment;

[0037] Fig.10 A schematic diagram of the connection between the second rotating plate and the second outer fixing ring inside the upper fixture in the embodiment;

[0038] Fig.11 It is a schematic diagram of the three-dimensional structure of the upper clamp after cutting in the embodiment.

[0039] In the figure: 1, base; 2, oil cylinder; 3, mounting plate; 4, motor; 51, head drill rod; 52, middle drill rod; 53, tail drill rod; 6, upper fixture; 61, connecting pipe; 62, second outer fixing ring; 63, second annular pressure plate; 64, second rotating plate; 65, second arc clamp; 66, second guide rod; 67, third spring; 68, first through groove; 7, lower fixture; 71, first outer fixing ring; 7 2. First rotating plate; 73. First annular pressure plate; 74. First arc-shaped clamping block; 75. Electric telescopic rod; 76. First spring; 77. Slide groove; 78. First guide rod; 79. Second spring; 8. Drill bit; 9. Groove; 10. Upper sliding ring; 11. Lower sliding ring; 12. Limiting clamp; 13. Lower connecting rod; 14. Upper connecting rod; 15. Water collecting trough; 16. Water inlet hole; 17. Distance sensor; 18. Cylinder. DETAILED DESCRIPTION

[0040] 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 a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0041] This embodiment proposes a hydrogeological exploration device for water hazard prevention, such as Figures 1 to 11As shown, it includes two oil cylinders 2 fixed on the base 1 in the vertical direction, and the ends of the two oil cylinders 2 are connected to a horizontally arranged mounting plate 3. The upper end of the mounting plate 3 is installed with a motor 4. The motor shaft of the motor 4 passes through the mounting plate 3 and is fixed with a connecting sleeve. The drill rod used for drilling is connected to the connecting sleeve. The motor 4 drives the drill rod to rotate, and the two oil cylinders 2 are used to drive the drill rod to move in the vertical direction, so as to realize the drilling operation. Of course, a through hole is opened in the middle of the base 1 for the drill rod to pass through. Since the depth of groundwater is much greater than the length of the drill rod, multiple drill rods are required to complete the drilling in actual operation. Therefore, the drill rod is divided into three parts, including one head drill rod 51 and one tail drill rod 53, and multiple middle drill rods 52 are set according to actual conditions, and the specifications of each middle drill rod 52 are the same. The connection between the head drill rod 51 and the connecting sleeve is a hexagonal prism structure, which is inserted into the connecting sleeve to ensure that the motor 4 can provide it with rotational force. The head drill rod 51 and the middle drill rod 52, each middle drill rod 52, and the middle drill rod 52 and the tail drill rod 53 are all connected by a threaded structure, and the bottom of the tail drill rod 53 is integrally formed with a drill bit 8. When drilling, first insert the head drill rod 51 into the connecting sleeve, then thread the tail drill rod 53 and the head drill rod 51, start the motor 4 to drive the head drill rod 51 and the tail drill rod 53 to rotate, and at the same time, the two oil cylinders 2 contract to drive the head drill rod 51 and the tail drill rod 53 to move downward. After the tail drill rod 53 is drilled into the ground, start the motor 4 in the reverse direction to separate the head drill rod 51 and the tail drill rod 53, and the two oil cylinders 2 extend to drive the head drill rod 51 to reset, and then thread one end of the middle drill rod 52 to the head drill rod 51, and the other end to the tail drill rod 53, start the motor 4 again to drive the head drill rod 51 to rotate forward, and the two oil cylinders 2 retract to drive the tail drill rod 53 to continue drilling downward, and repeat the above steps until the bottom of the tail drill rod 53 penetrates the rock formation.

[0042] In order to quickly complete the sampling operation of groundwater, the present invention makes structural improvements to the tail drill rod 53 and gives it a water-drawing function. Specifically, the tail drill rod 53 is first set to a hollow structure, and a water collecting trough 15 is formed axially inside the tail drill rod 53 for holding the collected water samples. A groove 9 is formed radially inward at a position close to the drill bit 8 on the circumferential surface of the tail drill rod 53. Two water inlet holes 16 are opened at the top of the groove 9 to communicate with the water collecting trough 15. The groove 9 is opened to prevent the water inlet holes 16 from directly contacting the borehole wall and being blocked. When the tail drill rod 53 penetrates the rock layer and extends below the groundwater surface, the groundwater flows into the water collecting trough 15 through the two water inlet holes 16. That is to say, when the drilling is completed, the tail drill rod 53 continues to move downward for a distance so that the two water inlet holes 16 extend into the water to complete the water drawing work.

[0043] Although the two water inlet holes 16 are opened in the groove 9 to avoid being blocked to a certain extent, during the drilling process, the powder debris after the rock formation is crushed will still enter the water collection tank 15 through the water inlet holes 16, and these debris will mix with the collected water and eventually affect the detection result of the sample. Therefore, in order to completely prevent the debris from entering the water collection tank 15, the present embodiment also has an upper slip ring 10 and a lower slip ring 11 sleeved on the outside of the groove 9, wherein the upper slip ring 10 is located at the top of the groove 9 and slides with it. The upper sliding ring 10 and the lower sliding ring 11 are connected by two sets of lower connecting rods 13 and upper connecting rods 14. One end of the lower connecting rod 13 is hingedly connected to the lower sliding ring 11, and the other end is hingedly connected to the upper connecting rod 14. The other end of the upper connecting rod 14 is hingedly connected to the upper sliding ring 10. In order not to affect the forward advancement of the tail drill rod 53 in the borehole, the outer diameters of the upper sliding ring 10 and the lower sliding ring 11 are consistent with the outer diameter of the tail drill rod 53. A limit snap ring 12 is fixed to the outside of the groove 9 below the upper sliding ring 10. The limit snap ring 12 is used to limit the downward sliding distance of the upper sliding ring 10. The limit snap ring 12 is also formed with an avoidance notch adapted to the upper connecting rod 14 to avoid motion interference between the upper sliding ring 10 and the upper connecting rod 14. In the initial state, the upper sliding ring 10 is located as shown in FIG. Figure 5 As shown in the figure, it slides freely onto the limit clamp ring 12 under the action of gravity. At this time, the upper sliding ring 10 cannot block the water inlet hole 16. As the tail drill rod 53 drills into the rock formation, when the lower connecting rod 13 contacts the orifice of the borehole, under the resistance of the orifice, the two lower connecting rods 13 will swing toward the axis of the tail drill rod 53, thereby driving the upper sliding ring 10 to slide upward along the groove 9. After the lower connecting rod 13 and the upper connecting rod 14 rotate to be located on the same straight line, the upper sliding ring 10 slides to the top of the groove 9 to block the two water inlet holes 16, that is, forming Figure 4 Status shown.

[0044] After the tail drill rod 53 penetrates the rock formation, in order to smoothly obtain the water sample, the tail drill rod 53 continues to move downward until the groove 9 is completely inserted into the groundwater. At this time, the upper sliding ring 10 will slide down to the limit clamp ring 12 under the action of its own gravity. At this time, the two water inlet holes 16 are opened, and the groundwater flows into the water collection tank 15. When the water sample inside the water collection tank 15 rises to the same level as the water inlet holes 16, the automatic water extraction is completed. At this time, the middle drill rod 52 and the tail drill rod 53 need to be taken out of the rock formation. During the upward movement of the tail drill rod 53, as shown in FIG. Figure 6As shown, the upper connecting rod 14 first contacts the interface between the rock layer and the groundwater. Under the action of the resistance there, the two upper connecting rods 14 will rotate toward the axis of the tail drill rod 53, thereby driving the upper sliding ring 10 to move upward, and finally causing the upper sliding ring 10 to move upward to the top of the groove 9 to seal the two water inlet holes 16. During the entire downward drilling and upward removal process of the tail drill rod 53, the water collection tank 15 is always isolated from the outside world, and the debris inside the borehole cannot enter the water collection tank 15, thereby avoiding contamination of the obtained water sample. Moreover, the tail drill rod 53 can obtain water samples without the aid of external power equipment, which can save the time for collecting water samples and reduce the sampling cost.

[0045] In the actual drilling operation, since it is impossible to accurately predict how many middle drill rods 52 are connected to penetrate the rock formation, there is a hidden danger. When the tail drill rod 53 penetrates the rock formation, the entire drill rod assembly loses the resistance of the rock formation. The drill rod assembly has a large gravity. Under the action of its own gravity, the top of the head drill rod 51 will be separated from the connecting sleeve, which will cause the entire drill rod assembly to fall into the groundwater. In order to avoid this phenomenon, the present invention arranges an upper clamp 6 at the lower end of the mounting plate 3. The upper clamp 6 always forms a secure clamp on the head drill rod 51, and can also rotate synchronously with the head drill rod 51, so that it can not only ensure the normal rotation and drilling of the drill rod, but also form a clamping force on the drill rod assembly to prevent it from falling. Specifically, the upper clamp 6 in this embodiment includes a second outer fixing ring 62 and a second rotating plate 64 rotatably nested inside the second outer fixing ring 62. The second outer fixing ring 62 is fixedly suspended on the lower end of the mounting plate 3 through a connecting tube 61. The second rotating plate 64 is concentrically arranged with the connecting sleeve. The head drill rod 51 passes through the second rotating plate 64 and is connected to the connecting sleeve. Four second arc-shaped clamping blocks 65 are distributed in an annular manner inside the second rotating plate 64. Each second arc-shaped clamping block 65 has an arc-shaped structure that is compatible with the head drill rod 51 on one side facing the center of the second rotating plate 64, and the lower end surface of each second arc-shaped clamping block 65 is inclined Structure, two cylinders 18 are installed on the upper end surface of the second rotating plate 64 in the vertical direction, and the piston rod of the cylinder 18 passes through the second rotating plate 64 and is fixedly connected to the second annular pressure plate 63. The cylinder 18 drives the second annular pressure plate 63 to move upward in the vertical direction, and the second annular pressure plate 63 contacts with the lower end surfaces of all the second arc-shaped clamping blocks 65, thereby driving all the second arc-shaped clamping blocks 65 to synchronously move along the radial direction of the second rotating plate 64 toward the head drill rod 51 to clamp it. When the head drill rod 51 is clamped by the four second arc-shaped clamping blocks 65, the second rotating plate 64 will rotate synchronously with the head drill rod 51.

[0046] In order to ensure the stability of the sliding of the four second arc-shaped clamping blocks 65 in the process of radially sliding inside the second rotating plate 64, the present embodiment further provides a first through groove 68 inside each second arc-shaped clamping block 65, and a second guide rod 66 is distributed along its axial direction in the first through groove 68. The second guide rod 66 is distributed along the radial direction of the second rotating plate 64, and one end of the second guide rod 66 passes through the outside of the second arc-shaped clamping block 65 and is fixedly connected to the inner wall of the second rotating plate 64, and the other end extends to the inside of the first through groove 68 and is fixedly connected to the first baffle. A third spring 67 is also sleeved on the outside of the second guide rod 66, and one end of the third spring 67 is connected to the first baffle, and the other end is connected to the inner wall of the first through groove 68. The third spring 67 is provided to ensure that the four second arc-shaped clamping blocks 65 can be smoothly reset.

[0047] Furthermore, after drilling and water extraction are completed, the tail drill rod 53 and all the middle drill rods 52 need to be removed. The usual practice is that the motor 4 drives the head drill rod 51 to rotate slowly, and then the two cylinders 2 extend to drive the mounting plate 3 to move upward. When the middle drill rod 52 connected to the head drill rod 51 is completely detached from the borehole, the operator needs to first apply an upward pulling force to the second middle drill rod 52 (the middle drill rod 52 connected to the head drill rod 51 is set as the first one) to prevent the remaining middle drill rods 52 and the tail drill rod 53 from falling into the groundwater area when the first middle drill rod 52 is removed, and then use a stirrer or a stick-shaped tool to knock the head drill rod 51. The connection between the head drill rod 51 and the middle drill rod 52 is pre-loosened, and then the motor 4 drives the head drill rod 51 to rotate slowly in the opposite direction. At the same time, the two cylinders 2 slowly drive the mounting plate 3 to move upward, so that the head drill rod 51 and the middle drill rod 52 are separated. At this time, the personnel rotates the first middle drill rod 52 to disconnect its bottom and the top of the second middle drill rod 52. Then, the first middle drill rod 52 can be removed, and then the head drill rod 51 is driven downward by the cylinder 2 to be threadedly connected with the second middle drill rod 52. Then, the second middle drill rod 52 is removed according to the same operation as above, and the remaining middle drill rods 52 are also taken out one by one in this way.

[0048] In the process of removing each middle drill rod 52, the operator is required to manually apply an upward pulling force to the middle drill rod 52 in the borehole to ensure that the middle drill rod 52 in the borehole will not fall. In the early stage, due to the large number of middle drill rods 52 in the borehole, the operator is required to provide a large pulling force, which not only increases the workload of the workers, but also causes the workers to bruise their hands every time the head drill rod 51 rotates in the opposite direction and is not smoothly separated from the middle drill rod 52 because the workers' hands are in a state of gripping the middle drill rod 52. In view of this, the present invention also provides a lower clamp 7 at the upper end of the base 1. During the drilling process, the lower clamp 7 is in a non-working state. When the middle drill rod 52 and the tail drill rod 53 are recovered, the lower clamp 7 can clamp the middle drill rod 52, thereby freeing up the labor of the workers. The overall specifications of the lower clamp 7 are similar to those of the upper clamp The lower clamp 7 comprises a first outer fixing ring 71 fixed on the base 1, a first rotating plate 72 is rotatably installed on the inner side of the first outer fixing ring 71, and four first arc-shaped clamping blocks 74 are distributed in an annular manner inside the first rotating plate 72. Each first arc-shaped clamping block 74 is radially slidably installed in the slide groove 77, and the first arc-shaped clamping block 74 is in an arc structure adapted to the middle drill rod 52 on one side facing the axis of the first rotating plate 72, and the top is in an inclined structure. A first annular pressure plate 73 is provided above the first outer fixing ring 71 for applying force to the first arc-shaped clamping block 74, and the first annular pressure plate 73 moves downward in the vertical direction to squeeze the four first arc-shaped clamping blocks 74, so that all the first arc-shaped clamping blocks 74 move synchronously toward the middle drill rod 52 to clamp it.

[0049] Similarly, in order to ensure the stability of the first arc-shaped clamping block 74 when it slides inside the slide groove 77, a second through groove is opened in the radial direction inside each first arc-shaped clamping block 74, and a first guide rod 78 is slid inside the second through groove along its length direction. One end of the first guide rod 78 passes through the first arc-shaped clamping block 74 and is fixedly connected to the inner wall of the slide groove 77, and the other end extends to the inside of the second through groove and is fixed with a second baffle. The inner diameter of the second through groove is adapted to the diameter of the second baffle. A second spring 79 is also sleeved on the outside of the first guide rod 78, one end of the second spring 79 is connected to the second baffle, and the other end is connected to the groove wall of the second through groove. The second spring 79 is provided to ensure that the four first arc-shaped clamping blocks 74 can be smoothly reset.

[0050] In addition, the clamping of the middle drill rod 52 by the lower clamp 7 needs to cooperate with the upper clamp 6. Specifically, after drilling and sampling are completed, the oil cylinder 2 drives the first middle drill rod 52 to completely detach from the borehole. At this time, the first middle drill rod 52 can be disassembled. First, the two cylinders 18 drive the second annular pressure plate 63 to move downward. After the second arc-shaped clamping block 65 loses the squeezing force of the second annular pressure plate 63, it will reset under the action of the third spring 67. At this time, the head drill rod 51 loses the clamping force, and a distance sensor 17 is also installed on one side of the second annular pressure plate 63. The sensor 17 is used to detect the distance between the second annular pressure plate 63 and the second outer fixing ring 62. When the second annular pressure plate 63 and the second arc-shaped clamping block 65 are completely out of contact, the distance between the second annular pressure plate 63 and the second outer fixing ring 62 is set to L1. Then, when the distance sensor 17 detects that the distance between the second annular pressure plate 63 and the second outer fixing ring 62 is exactly L1, a signal will be sent to the controller to control the electric telescopic rod 75 to move. The electric telescopic rod 75 is arranged inside the first rotating plate 72, and its movable end is connected to the first annular pressure plate 73.

[0051] The electric telescopic rod 75 drives the first annular pressure plate 73 to move toward the first arc-shaped clamping block 74 to apply pressure thereto, thereby causing the four first arc-shaped clamping blocks 74 to synchronously move toward the axis of the second middle drill rod 52 to clamp it. At this time, the mounting plate 3 is driven upward by the oil cylinder 2 to disengage the head drill rod 51 and the connecting sleeve, and the entire drill rod assembly is clamped by the lower clamp 7. The personnel manually remove and separate the head drill rod 51 and the first middle drill rod 52, and then install the head drill rod 51 into the connecting sleeve, and drive the head drill rod 51 downward by the oil cylinder 2 to connect the head drill rod 51 with the top of the second middle drill rod 52. Then, the cylinder 18 is started to drive the second annular pressure plate 63 to move upward, so that the second arc-shaped clamping block 65 re-clamps the head drill rod 51, and the second annular pressure plate 63 and the second rotating plate are set. When the distance sensor 17 detects that the distance between the second annular pressure plate 63 and the second outer fixing ring 62 is exactly L2, it will send a signal to the controller, so that the controller controls the electric telescopic rod 75 to immediately cut off the power, and the electric telescopic rod 75 is reset under the action of the first spring 76. The first arc-shaped clamping block 74 loses its clamping on the middle drill rod 52, so that the head drill rod 51 can drive the middle drill rod 52 to move upward and continuously detach from the drill hole. Repeat this step until all the middle drill rods 52 are taken out.

[0052] In the description of the present invention, the terms "first", "second", "another", and "yet another" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0054] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A hydrogeological exploration device for flood control, comprising two oil cylinders (2) fixed on a base (1) in a vertical direction, the ends of the two oil cylinders (2) being connected to a mounting plate (3), a motor (4) being installed on the upper end of the mounting plate (3), a motor shaft of the motor (4) passing through the mounting plate (3) and then being fixed with a connecting sleeve, a drill rod being detachably connected to the connecting sleeve, the drill rod comprising a head drill rod (51), a tail drill rod (53) and a plurality of middle drill rods (52), a drill bit (8) being connected to the end of the tail drill rod (53), and characterized in that: A water collecting groove (15) is formed inside the tail drill rod (53) along the axial direction, and a groove (9) is formed on the circumferential surface thereof at a position close to the drill bit (8) inwardly and radially, and two water inlet holes (16) are provided at the top of the groove (9) and communicated with the water collecting groove (15); An upper sliding ring (10) and a lower sliding ring (11) are sleeved on the outside of the groove (9). The upper sliding ring (10) is located at the top of the groove (9) and is slidably connected thereto. The lower sliding ring (11) is located at the bottom of the groove (9) and is fixedly connected thereto. The upper sliding ring (10) and the lower sliding ring (11) are connected to each other via two groups of lower connecting rods (13) and upper connecting rods (14). One end of the lower connecting rod (13) is hingedly connected to the lower sliding ring (11), and the other end is hingedly connected to the upper connecting rod (14). The other end of the upper connecting rod (14) is hingedly connected to the upper sliding ring (10). It also includes an upper clamp (6) arranged at the lower end of the mounting plate (3) for clamping the head drill rod (51), and the upper clamp (6) can rotate synchronously with the head drill rod (51).

2. The hydrogeological exploration device for water hazard prevention and control according to claim 1, characterized in that: A limit snap ring (12) is fixed outside the groove (9) and located below the upper sliding ring (10). The limit snap ring (12) is used to limit the downward sliding distance of the upper sliding ring (10). An avoidance notch adapted to the upper connecting rod (14) is formed on the limit snap ring (12).

3. The hydrogeological exploration device for flood control according to claim 2 is characterized in that: The clamp (6) comprises a second outer fixing ring (62) and a second rotating plate (64) rotatably nested inside the second outer fixing ring (62). The second outer fixing ring (62) is fixedly suspended on the lower end of the mounting plate (3) through a connecting pipe (61); The second rotating plate (64) is arranged concentrically with the connecting sleeve, the head drill rod (51) passes through the second rotating plate (64) and is connected to the connecting sleeve, four second arc-shaped clamping blocks (65) are distributed in an annular manner inside the second rotating plate (64), and each second arc-shaped clamping block (65) has an arc-shaped structure adapted to the head drill rod (51) on one side facing the center of the second rotating plate (64), and the lower end surface of each second arc-shaped clamping block (65) is an inclined structure; Two cylinders (18) are mounted on the upper end surface of the second rotating plate (64) in the vertical direction, and piston rods of the cylinders (18) penetrate the second rotating plate (64) and are fixedly connected to the second annular pressure plate (63).

4. The hydrogeological exploration device for flood control according to claim 3 is characterized in that: A first through slot (68) is provided inside the second arc-shaped clamping block (65), and a second guide rod (66) is distributed in the first through slot (68) along its axial direction. One end of the second guide rod (66) passes through the outside of the second arc-shaped clamping block (65) and is fixedly connected to the inner wall of the second rotating plate (64), and the other end extends into the inside of the first through slot (68) and is fixedly connected to the first baffle.

5. The hydrogeological exploration device for flood control according to claim 4 is characterized in that: A third spring (67) is sleeved on the outside of the second guide rod (66), one end of the third spring (67) is connected to the first baffle plate, and the other end is connected to the inner wall of the first through slot (68).

6. The hydrogeological exploration device for flood control according to claim 4 or 5, characterized in that: It also includes a lower clamp (7) arranged on the base (1), and the lower clamp (7) is used to clamp the middle drill rod (52) during the process of removing it.

7. The hydrogeological exploration device for flood control according to claim 6 is characterized by: The lower clamp (7) comprises a first outer fixing ring (71) fixed on the base (1), and a first rotating plate (72) is rotatably mounted on the inner side of the first outer fixing ring (71); Four first arc-shaped clamping blocks (74) are distributed in an annular manner inside the first rotating plate (72), and each first arc-shaped clamping block (74) is radially slidably installed in a slide groove (77) of the first rotating plate (72). The first arc-shaped clamping block (74) has an arc-shaped structure matching the middle drill rod (52) on one side facing the axis of the first rotating plate (72), and has an inclined structure on the top. A first annular pressure plate (73) is arranged above the first outer fixing ring (71) for applying a force to the first arc-shaped clamping block (74). By driving the first annular pressure plate (73) to move in a vertical direction to act on the first arc-shaped clamping block (74), all the first arc-shaped clamping blocks (74) are synchronously moved toward the middle drill rod (52) to clamp it.

8. The hydrogeological exploration device for flood control according to claim 7 is characterized by: A second through slot is provided in the radial direction of the first arc-shaped clamping block (74), and a first guide rod (78) is slidably provided in the second through slot along its length direction. One end of the first guide rod (78) passes through the first arc-shaped clamping block (74) and is fixedly connected to the inner wall of the slide slot (77), and the other end of the first guide rod (78) extends into the second through slot and is fixedly provided with a second baffle. The inner diameter of the second through slot matches the diameter of the second baffle.

9. The hydrogeological exploration device for flood control according to claim 8, characterized in that: A second spring (79) is sleeved on the outside of the first guide rod (78), one end of the second spring (79) is connected to the second baffle plate, and the other end is connected to the groove wall of the second through groove.

10. The hydrogeological exploration device for flood control according to claim 8, characterized in that: A distance sensor (17) is installed on one side of the second annular pressure plate (63); An electric telescopic rod (75) is embedded in the first rotating plate (72), and its movable end is connected to the first annular pressing plate (73). The movable end of the electric telescopic rod (75) is also sleeved with a first spring (76), and one end of the first spring (76) is connected to the first annular pressing plate (73), and the other end is connected to the fixed end of the electric telescopic rod (75); The distance sensor (17) is connected to the electric telescopic rod (75) by signal. When the distance sensor (17) detects that the upper clamp (6) clamps the head drill rod (51), the electric telescopic rod (75) is in a power-off state. When the distance sensor (17) detects that the upper clamp (6) is in a release state for the head drill rod (51), the electric telescopic rod (75) is powered on to enable the lower clamp (7) to clamp the middle drill rod (52).

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