Drilling sampling device for hydraulic ring geological exploration

Abstract

The invention relates to the technical field of geological survey, in particular to a hydraulic ring geological survey drilling sampling device which comprises a threaded rod, the upper end of the threaded rod is connected with external driving equipment, the lower end of the threaded rod is fixedly connected with a sampling mechanism, the outer side of the sampling mechanism is sleeved with a shell, and a cavity is formed in the side wall of the shell. A cavity is formed in the bottom wall of the shell, a plurality of telescopic mechanisms are arranged on the upper portion of the interior of the cavity at equal intervals, the lower end of each telescopic mechanism is connected with a gas cylinder, a through hole for the gas cylinder to penetrate through is formed in the bottom wall of the shell, the lower end of each gas cylinder is fixedly communicated with a gas pipe, an outer air cushion is fixedly connected to the outer side of the gas pipe, and an inner air cushion is fixedly installed on one side of the outer air cushion. On one hand, sample pollution caused by mixing of sampled soil and soil in the drilling process can be avoided, the detection accuracy is improved, on the other hand, falling protection and deviation correction of a falling drill in two states of the middle core can be achieved, and reconnection is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of geological exploration, and in particular to a drilling sampling device for water conservancy and environmental geological exploration. Background Art

[0002] When carrying out water conservancy construction, water well drilling is often involved. Since water well drilling is a project with a large amount of engineering, in order to ensure the efficiency of engineering construction, it is often necessary to conduct underground soil structure drilling sampling in the water well drilling area in advance, and then observe and analyze the collected soil samples to determine whether the preset area is suitable for water well drilling.

[0003] In the process of drilling and sampling, the existing equipment needs to frequently replace or add pipes, and there may be caves underground. Therefore, it is very likely that the drill will fall off during the replacement process. On the one hand, it is not only difficult for the staff to take out the drill core to reconnect it, but on the other hand, after the drill is dropped, the sample is easily mixed with the soil at the bottom of the cave, causing sample contamination, so the sampling operation needs to be repeated, which is time-consuming and labor-intensive, and greatly affects the progress of the sampling work. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems existing in the prior art and to propose a drilling sampling device for water conservancy and environmental geological survey.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a drilling sampling device for hydraulic geological survey, comprising a threaded rod, the upper end of the threaded rod is connected to an external driving device, the lower end of the threaded rod is fixedly connected to a sampling mechanism, the outer side of the sampling mechanism is sleeved with an outer shell, a cavity is opened in the side wall of the outer shell, a plurality of telescopic mechanisms are evenly arranged above the inner part of the cavity, the lower end of each telescopic mechanism is connected to a gas cylinder, a through hole for the gas cylinder to pass through is opened on the bottom wall of the outer shell, the lower end of the gas cylinder is fixedly connected with an air pipe, the outer side of the air pipe is fixedly connected with an outer air cushion, an air outlet is opened on the air pipe, the air outlet is connected with the inner part of the outer air cushion, an inner air cushion is fixedly installed on one side of the outer air cushion, a one-way valve is installed between the outer air cushion and the inner air cushion, a drill drop detection mechanism is arranged at the bottom end of the air pipe, a plurality of straight grooves and a circle of receiving ring grooves are evenly opened at the bottom of the outer shell, and the straight grooves are connected to the receiving ring grooves.

[0006] Preferably, the sampling mechanism consists of a drilling part and a sampling part, the drilling part includes a secondary push rod fixedly connected to the lower end of the threaded rod, the output end of the secondary push rod faces downward and is fixedly connected to a primary connecting ring, the lower end of the primary connecting ring is fixedly connected to a plurality of connecting plates at equal intervals, a triangular drill is rotatably mounted on the lower end of the connecting plate, an elastic band is commonly inserted between the plurality of drills, and a heating component is provided at the lower end of the drill.

[0007] Preferably, the heating assembly comprises a heating block fixedly mounted on the inner surface of the lower end of the drill bit.

[0008] Preferably, a steering knuckle is fixedly mounted on the lower end of the connecting plate, a rotating shaft is rotatably mounted between any two adjacent steering knuckles, and an axial hole for the rotating shaft to pass through is opened inside the drill.

[0009] Preferably, the sampling part includes a secondary connecting ring slidably mounted on the inner side of the primary connecting ring, the top of the secondary connecting ring is fixedly connected to the output end of the secondary push rod, a sampling ring is fixedly mounted at the middle position of the lower end of the secondary connecting ring, and a material box is fixedly mounted at the outer periphery of the lower end, the material box is sleeved on the outer side of the sampling ring, a plastic film is stored inside the material box, and a feeding port is provided at the bottom of the material box.

[0010] Preferably, the plastic film is cylindrical, and the interior of the sampling ring is hollow.

[0011] Preferably, a plurality of magnetic plates are fixedly connected to the lower end of the primary connecting ring at equal intervals, the connecting plates and the magnetic plates are arranged at intervals, the N pole of the magnetic plates faces outward, a coil ring is sleeved on the outer side of the secondary push rod, the lower end of the coil ring is fixedly connected to a central ring, a plurality of capacitors are fixedly installed at equal intervals inside the central ring, the lower end of the central ring is fixedly connected to a copper shell, a plurality of mounting grooves are opened at equal angles on the side wall of the copper shell, a coil plate is fixedly installed in each mounting groove, the number of the coil plates is the same as the number of capacitors, and a plurality of turns of conductive copper wire are wound around the coil ring and the coil plate, and the conductive copper wire inside the coil plate is wound clockwise.

[0012] Preferably, the telescopic mechanism includes a spring fixedly connected to the top wall of the cavity, the lower ends of the multiple springs are commonly fixedly connected to a push plate, a locking assembly is provided below the push plate, a slider slidably installed inside the cavity is provided below the locking assembly, there is damping between the slider and the inner wall of the cavity, the lower end of the slider is fixedly connected to a connecting rod, and the lower end of the connecting rod is fixedly connected to the gas cylinder.

[0013] Preferably, the locking assembly comprises a plurality of blocks which are arranged at equal intervals below the push plate, the blocks are slidably connected to the inside of the shell, and the blocks are connected to a driving device installed inside the shell.

[0014] Preferably, the drill drop detection mechanism includes a chassis fixedly connected to the bottom end of the air pipe, a sensor is fixedly connected between any two adjacent chassis, a plurality of empty slots are evenly spaced at the bottom of the copper shell, the number and position of the straight slots correspond to the empty slots, and the two are connected.

[0015] Compared with the prior art, the advantages of the present invention are: In the present application, the outer wall of the drill bit is used to drill the soil during drilling, and sampling is carried out through a sampling ring and a plastic film in combination with a sampling seal, which can avoid the mixing of the sampled soil with the soil during the drilling process and contamination of the sample. At the same time, it can also be sealed in time to prevent exposure to the air after removal, resulting in the loss of some volatile substances and affecting the detection accuracy.

[0016] The arrangement of the coil ring, central ring, copper shell and coil plate in the present application is such that after the drill bit falls off, the coil plate will generate a corrective force on the middle core so that the middle core remains in a relatively central position during the falling process, facilitating subsequent reconnection. At the same time, the magnetic flux will change during the drill bit falling process, thereby slowing down the falling speed of the middle core and preventing damage to the middle core.

[0017] In the present application, by setting the connecting rod, gas cylinder, external air cushion and internal air cushion, etc., the drop protection and correction of the drill bit in two states of the middle core can be achieved, while the purity of the internal soil sample is ensured, and the test accuracy is improved.

[0018] In summary, the design of the above-mentioned structure in this application can, on the one hand, avoid the mixing of sampled soil and soil in the drilling process to contaminate the sample and improve the accuracy of detection; on the other hand, it can realize the drop protection and correction of the drill bit dropped in two states of the intermediate core, which is convenient for reconnection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a drilling sampling device for water conservancy and environmental geology survey proposed by the present invention; Figure 2 This is a schematic diagram of the structure of the outer air cushion and inner air cushion part of a drilling sampling device for water conservancy and environmental geological survey proposed by the present invention; Figure 3 A half-section diagram of the outer shell of a drilling sampling device for water conservancy and environmental geology survey proposed by the present invention; Figure 4 A half-section diagram of the coil ring, central ring and copper shell part of the outer shell of a drilling sampling device for hydraulic geotechnical survey proposed by the present invention; Figure 5 for Figure 4 The enlarged view of point A in the middle; Figure 6 for Figure 4 The enlarged view of point B in the middle; Figure 7 for Figure 4 Enlarged view of point C in the middle; Figure 8 This is a schematic diagram of the structure of the air cushion and one-way valve part in a drilling sampling device for hydraulic and environmental geological survey proposed by the present invention; Fig. 9This is a schematic diagram of the structure of the air pipe and air outlet of a drilling sampling device for water conservancy and environmental geological survey proposed by the present invention; Fig.10 This is a structural schematic diagram of a connecting plate and a magnetic plate part of a drilling sampling device for water conservancy and environmental geological survey proposed by the present invention; Fig.11 A half-section diagram of a primary connection ring portion of a drilling sampling device for hydraulic and environmental geological survey proposed by the present invention; Fig.12 for Fig.11 The enlarged view of point D in the middle; Fig.13 A half-section diagram of a drill cutter and a steering knuckle portion of a drilling sampling device for hydraulic and environmental geological surveys proposed by the present invention.

[0020] In the figure: 1 shell, 11 spring, 111 push plate, 12 stopper, 13 coil ring, 14 central ring, 141 capacitor, 15 copper shell, 151 coil plate, 152 empty slot, 16 storage ring slot, 161 straight slot, 2 connecting rod, 21 slider, 22 gas cylinder, 23 air pipe, 231 air outlet, 232 chassis, 233 sensor, 24 outer air cushion, 241 inner air cushion, 242 one-way valve, 3 secondary push rod, 31 threaded rod, 32 primary connecting ring, 321 connecting plate, 322 magnetic plate, 33 secondary connecting ring, 331 sampling ring, 34 material box, 341 feeding port, 35 steering knuckle, 351 rotating shaft, 36 drill, 361 shaft hole, 362 elastic band, 363 heating block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figures 1 to 13 , a drilling sampling device for water conservancy and environmental geological survey, comprising a threaded rod 31, the upper end of the threaded rod 31 is connected to an external driving device, the lower end of the threaded rod 31 is fixedly connected to a secondary push rod 3, the output end of the secondary push rod 3 faces downward and is fixedly connected to a primary connecting ring 32, the lower end of the primary connecting ring 32 is fixedly connected to a plurality of connecting plates 321 and a plurality of magnetic plates 322 at equal intervals, the connecting plates 321 and the magnetic plates 322 are arranged at intervals, the magnetic plates 322 are magnetic and the N pole faces outward, a steering knuckle 35 is fixedly installed at the lower end of the connecting plate 321, a rotating shaft 351 is rotatably installed between any two adjacent steering knuckles 35, a drill 36 is fixedly connected to the outer side of the rotating shaft 351, an axial hole 361 is opened inside the drill 36 for the rotating shaft 351 to pass through, the drill 36 is arranged in a triangular shape, and in the initial state, the lowermost ends of each drill 36 are tightly fitted (as shown in the attached manual Fig.10As shown in FIG. 1 ), the drill bit 36 ​​can rotate between the two steering knuckles 35 following the rotating shaft 351, so that the multiple drill bits 36 can move away from or approach each other.

[0023] A secondary connecting ring 33 is slidably installed on the inner side of the primary connecting ring 32, and the top of the secondary connecting ring 33 is fixedly connected to the output end of the secondary push rod 3, and a sampling ring 331 is fixedly installed at the middle position of the lower end of the secondary connecting ring 33, and a material box 34 is fixedly installed at the outer periphery of the lower end. The material box 34 is sleeved on the outer side of the sampling ring 331, and a plastic film is stored inside the material box 34. The plastic film is cylindrical, similar to a garbage bag in daily life. A feeding port 341 is provided below the material box 34, and the plastic film is fed out through the feeding port 341. The interior of the sampling ring 331 is hollow, and in the initial state, the garbage bag is sleeved on the outer side of the sampling ring 331. When the secondary push rod 3 is running, the sampling ring 331 can be driven to move downward by driving the secondary connecting ring 33. After the sampling ring 331 moves downward and its lower end contacts the drill 36, the drill 36 can be rotated, thereby facilitating the sampling operation of the sampling ring 331.

[0024] An elastic band 362 is commonly passed through the multiple drill bits 36, and the multiple drill bits 36 can be tightly fitted together under the action of the elastic band 362. A heating block 363 is fixedly installed on the inner surface of the lower end of the drill bit 36, so that after the drill bit 36 ​​is stretched open by the sampling ring 331, the heating block 363 can be attached to the outer wall surface of the sampling ring 331 and directly contact the plastic film, thereby heating the plastic film, and the plastic film can be sealed after heating.

[0025] A coil ring 13 is sleeved on the outer side of the secondary push rod 3, and the lower end of the coil ring 13 is fixedly connected to a central ring 14, and multiple capacitors 141 are fixedly installed at equal intervals inside the central ring 14. The lower end of the central ring 14 is fixedly connected to a copper shell 15, and multiple mounting grooves are opened at equal angles on the side wall of the copper shell 15. A coil plate 151 is fixedly installed in each mounting groove. The number of coil plates 151 is the same as the number of capacitors 141, and the coil ring 13 is wound with conductive copper wire, and the coil plate 151 is wound with multiple turns of conductive copper wire clockwise (such as Figure 3 The conductive copper wires inside the two are not drawn in the drawings of the specification.

[0026] The outer side of the coil ring 13 is fixedly connected to the shell 1, a cavity is opened in the side wall of the shell 1, and a plurality of springs 11 are fixedly connected to the top wall of the cavity at equal intervals. The lower ends of the plurality of springs 11 are fixedly connected to a push plate 111, and a plurality of stoppers 12 are arranged at equal intervals below the push plate 111. The stoppers 12 are slidably connected to the inside of the shell 1, and the stoppers 12 are connected to a driving device installed inside the shell 1. The driving device is a prior art, and its specific structural design is not repeated here. A slider 21 slidably installed inside the cavity is arranged below the stopper 12, and there is damping between the slider 21 and the inner wall of the cavity. The lower end of the slider 21 is fixedly connected to a connecting rod 2, and the lower end of the connecting rod 2 slides A gas cylinder 22 penetrates through the bottom wall of the outer shell 1 and is fixedly connected thereto, an air pipe 23 is fixedly connected to the lower end of the gas cylinder 22, an outer side of the air pipe 23 is fixedly connected to an outer air cushion 24, an air outlet hole 231 is provided on the air pipe 23, the air outlet hole 231 is connected to the inside of the outer air cushion 24, and by arranging the gas cylinder 22, the air pipe 23 and the air outlet hole 231, air can be inflated into the inside of the outer air cushion 24 to make it expand, an inner air cushion 241 is fixedly installed on one side of the outer air cushion 24, a one-way valve 242 is installed between the outer air cushion 24 and the inner air cushion 241, and during the inflation process of the gas cylinder 22, part of the airflow will gradually enter the inner air cushion 241 through the one-way valve 242 until the inner air cushion 241 is fully expanded.

[0027] A plurality of empty grooves 152 are evenly spaced at the bottom of the copper shell 15, a circle of receiving annular grooves 16 are formed at the bottom of the outer shell 1, and a plurality of straight grooves 161 are evenly spaced at the bottom of the outer shell 1. The number and position of the straight grooves 161 correspond to the empty grooves 152, and the straight grooves 161 and the empty grooves 152 are both connected to the receiving annular groove 16. A chassis 232 is fixedly connected to the bottom end of the air pipe 23, and a sensor 233 is fixedly connected between any two adjacent chassis 232. The sensor 233 is a prior art, and its specific structural design is not repeated here. The receiving annular groove 16 is slightly larger than the sensor and chassis 232, so that the chassis 232 and the sensor 233 can be stored in the receiving annular groove 16 under normal conditions, and the bottom is flush with the bottom of the external part.

[0028] The specific working principle of the present invention is as follows: the inner air cushion 241 and the one-way valve 242 are initially wrapped with a thin film and gathered on the outside of the air pipe 23, and inserted into the cavity in the outer shell 1. The user needs to first connect the power end (usually a drilling pump) to the threaded rod 31, and at the same time connect the outer shell 1 to a conventional outer sleeve, and simultaneously lower them into the well to be sampled. During the lowering process, the power end will drive the drill bit 36 ​​to drill through the threaded rod 31, and the excess soil will be discharged from the gap between the middle core body and the external part until it reaches the specified depth. At this time, the sampling operation can be carried out, and the secondary push rod 3 controls the primary connecting ring 32 to lift upward, and then drives the steering knuckle 35 and the drill bit 36 ​​to lift upward through the connecting plate 321. Due to the presence of the sampling ring 331, the drill bit 36 ​​will touch the sampling ring 331 during the lifting process and will be pushed open. The elastic band 362 inserted in the middle of the drill bit 36 ​​is stretched, so that after the drill bit 36 ​​is stretched open, the heating block 363 can fit on the outer wall surface of the sampling ring 331 and directly contact the plastic film. After that, the secondary connecting ring 33 pushes the sampling ring 331 downward and inserts it into the soil sample to be taken. Due to the presence of the plastic film, the soil sample will not touch the sampling ring 331, and will gradually be inserted into the plastic film during the descent of the sampling ring 331. When the specified depth is reached, The heat block 363 starts to heat and adheres the plastic film to the surface of the heating block 363. At this time, the primary connecting ring 32 starts to descend. Under the action of the elastic band 362, several drill bits 36 are closed again, and the output of the feeding port 341 is cooperated to make the plastic film completely wrap the soil sample to be tested. The heating block 363 continues to heat and the feeding port 341 continues to send out new plastic film. The plastic film gradually accumulates on the heating block 363 under the action of gravity and melts and condenses into one under the heating action of the heating block 363. At this time, the sealing work of the soil sample to be tested is completed, and drilling downwards can continue or sampling can be carried out in the next area. The advantage of this device is that the outer wall of the drill bit 36 ​​is used to drill the soil during drilling, and sampling is carried out through the sampling ring 331 and the plastic film in cooperation with the sampling seal, which can avoid the mixing of the sampled soil and the soil in the drilling process to contaminate the sample. At the same time, it can also be sealed in time to prevent some volatile substances from being lost due to exposure to the air after removal, affecting the detection accuracy.

[0029] During the drilling process, due to the complexity of the geological structure, hollow structures such as caves often appear. Encountering such structures during conventional drilling often causes the drill core in the middle to fall off (i.e., the drill core falls off). It is necessary to add a short tube to connect to the power end and reconnect to the drill core. If a deeper cave is encountered, the drill core will be skewed and difficult to connect, or it will directly detach from the casing and cause the drill core to be lost. In response to this situation, the present solution has made the following improvements: the inner wall of the outer shell 1 is provided with a coil ring 13, a central ring 14, a copper shell 15 and a coil plate 151, the coil ring 13 is wound with conductive copper wire, and the central ring 14 is evenly distributed with a plurality of capacitors 141, and the number of capacitors 141 is the same as that of the coil plate 151 (the non-conductive material of the coil plate 151 will not affect the passage of the electromagnetic field), and the coil plate 151 is wound with multiple turns of conductive copper wire clockwise (such as Figure 3As shown in the direction, according to Ampere's law, when power is supplied to capacitor 141, a magnetic field with the N pole facing the middle core will be generated. At the same time, magnetic plate 322 is magnetic and its N pole faces outward. Sensor 233 is an infrared sensor, which can detect the temperature of the bottom of the middle core through straight slot 161 and empty slot 152. Frictional heat will be generated during drilling under normal conditions, and the heating of heating block 363 will also be sensed during sampling. When sensor 233 cannot sense the heat source, it means that the middle core has a drill drop problem. At this time, the central ring 14 will control the capacitor 141 to discharge and introduce the conductive copper wire into the coil plate 151. Since magnets of the same polarity repel each other, and the closer the distance, the greater the repulsive force generated. Therefore, after the drill drops, coil plate 151 will generate a corrective force on the middle core so that the middle core remains in a relatively central position during the falling process, which is convenient for subsequent reconnection. After the drill bit falls, the sensor 233 will also generate an electric signal to the block 12 at the same time, so that the block 12 retracts, the elastic potential energy of the spring 11 is released, and then the slider 21 is pushed through the push plate 111 to pop out the entire pop-up part from the cavity of the shell 1. Since the copper shell 15 is a copper annular tube and the coil plate 151 is magnetic, the magnetic flux will change during the drill bit falling process, thereby slowing down the falling speed of the middle core. The pop-up part is free to fall with the help of the push plate 111, and the falling acceleration is much higher than that of the middle core, so it will fall to the specified position first (until the slider 21 is stuck at the bottom of the cavity of the shell 1). During the process, the gas cylinder 22 inflates the outer air cushion 24 through the air outlet 231. There is a one-way valve 242 between the outer air cushion 24 and the inner air cushion 241. During the inflation process of the gas cylinder 22, the air flow will pass through the one-way valve 242 gradually enters the inner air cushion 241 until the inner air cushion 241 is fully expanded. During this period, the middle core will fall onto the inner air cushion 241. Since multiple outer air cushions 24 and multiple inner air cushions 241 are assembled together to form a whole disc, if the drill is dropped during the drilling process, the tip formed by the drill bit 36 ​​will be inserted into the cross gap formed in the middle of the inner air cushion 241, and further supported and corrected during the subsequent expansion of the inner air cushion 241 to ensure that the middle core is located at the central axis of the entire device. If the drill is dropped during the sampling process, the sampling ring 331 will be stuck in the annular groove on the upper part of the outer air cushion 24 and the inner air cushion 241, and the sampling ring 331 will be sealed during the subsequent expansion of the inner air cushion 241 to prevent the loss of sampled soil after the drill is dropped and soil entering the sampling ring 331 when the device is lifted to retrieve it, affecting the sample quality. Due to the one-way permeability of the one-way valve 242, there is no need to worry about leakage and detachment after the inner air cushion 241 blocks the sampling ring 331, causing the sample to spill. The existence of the slider 21 ensures that the pop-up portion will not be completely separated from the external portion, thereby ensuring that the middle core will not be completely separated from the external portion after the drill is dropped, which is convenient for subsequent retrieval.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling sampling device for hydraulic geological survey, comprising a threaded rod (31), the upper end of which is connected to an external driving device, characterized in that: The lower end of the threaded rod (31) is fixedly connected to a sampling mechanism, an outer shell (1) is sleeved on the outer side of the sampling mechanism, a cavity is provided in the side wall of the outer shell (1), a plurality of telescopic mechanisms are arranged at equal intervals above the cavity, the lower end of each telescopic mechanism is connected to a gas cylinder (22), a through hole is provided on the bottom wall of the outer shell (1) for the gas cylinder (22) to pass through, the lower end of the gas cylinder (22) is fixedly connected to an air pipe (23), the outer side of the air pipe (23) is fixedly connected to an outer air cushion (24), and the air pipe (23) is fixedly connected to an outer air cushion (24). An air outlet (231) is provided on the outer air cushion (23), the air outlet (231) is communicated with the interior of the outer air cushion (24), an inner air cushion (241) is fixedly mounted on one side of the outer air cushion (24), a one-way valve (242) is installed between the outer air cushion (24) and the inner air cushion (241), a drill drop detection mechanism is provided at the bottom end of the air pipe (23), a plurality of straight grooves (161) and a circle of receiving ring grooves (16) are provided at equal intervals on the bottom of the outer shell (1), and the straight grooves (161) are connected to the receiving ring groove (16).

2. The drilling sampling device for water conservancy and environmental geological survey according to claim 1 is characterized in that: The sampling mechanism is composed of a soil drilling part and a sampling part. The soil drilling part comprises a secondary push rod (3) fixedly connected to the lower end of a threaded rod (31). The output end of the secondary push rod (3) faces downward and is fixedly connected to a primary connecting ring (32). The lower end of the primary connecting ring (32) is fixedly connected to a plurality of connecting plates (321) at equal intervals. A triangular drill bit (36) is rotatably mounted on the lower end of the connecting plate (321). An elastic band (362) is commonly inserted between the plurality of drill bits (36). A heating component is arranged at the lower end of the drill bit (36).

3. The drilling sampling device for water conservancy and environmental geological survey according to claim 2 is characterized in that: The heating assembly comprises a heating block (363) fixedly mounted on the inner surface of the lower end of the drill bit (36).

4. The drilling sampling device for water conservancy and environmental geological survey according to claim 2 is characterized in that: A steering knuckle (35) is fixedly mounted on the lower end of the connecting plate (321), a rotating shaft (351) is rotatably mounted between any two adjacent steering knuckles (35), and a shaft hole (361) for the rotating shaft (351) to pass through is formed inside the drill bit (36).

5. The drilling sampling device for water conservancy and environmental geological survey according to claim 2 is characterized in that: The sampling portion comprises a secondary connecting ring (33) slidably mounted on the inner side of the primary connecting ring (32); the top end of the secondary connecting ring (33) is fixedly connected to the output end of the secondary push rod (3); a sampling ring (331) is fixedly mounted at the middle position of the lower end of the secondary connecting ring (33); a material box (34) is fixedly mounted at the outer periphery of the lower end; the material box (34) is sleeved on the outer side of the sampling ring (331); a plastic film is stored inside the material box (34); and a feeding port (341) is provided below the material box (34).

6. The drilling sampling device for water conservancy and environmental geological survey according to claim 5 is characterized in that: The plastic film is arranged in a cylindrical shape, and the interior of the sampling ring (331) is arranged in a hollow shape.

7. The drilling sampling device for water conservancy and environmental geological survey according to claim 5 is characterized in that: The lower end of the primary connecting ring (32) is fixedly connected to a plurality of magnetic plates (322) at equal intervals, the connecting plates (321) and the magnetic plates (322) are arranged at intervals, the N poles of the magnetic plates (322) face outwards, a coil ring (13) is sleeved on the outer side of the secondary push rod (3), the lower end of the coil ring (13) is fixedly connected to a central ring (14), a plurality of capacitors (141) are fixedly installed at equal intervals inside the central ring (14), the lower end of the central ring (14) is fixedly connected to a copper shell (15), a plurality of mounting grooves are formed at equal angles on the side wall of the copper shell (15), a coil plate (151) is fixedly installed in each mounting groove, the number of the coil plates (151) is the same as the number of the capacitors (141), and a plurality of turns of conductive copper wire are wound inside the coil ring (13) and the coil plate (151), the conductive copper wire inside the coil plate (151) is wound clockwise.

8. The drilling sampling device for water conservancy and environmental geological survey according to claim 1 is characterized in that: The telescopic mechanism comprises a spring (11) fixedly connected to the top wall of the cavity, the lower ends of the plurality of springs (11) being fixedly connected to a push plate (111), a locking assembly being arranged below the push plate (111), a slider (21) being slidably mounted inside the cavity being arranged below the locking assembly, damping being present between the slider (21) and the inner wall of the cavity, the lower end of the slider (21) being fixedly connected to a connecting rod (2), and the lower end of the connecting rod (2) being fixedly connected to a gas cylinder (22).

9. The drilling sampling device for water conservancy and environmental geological survey according to claim 8 is characterized in that: The locking assembly comprises a plurality of stoppers (12) arranged at equal intervals below the push plate (111); the stoppers (12) are slidably connected to the inside of the housing (1), and the stoppers (12) are connected to a driving device installed inside the housing (1).

10. The drilling sampling device for water conservancy and environmental geological survey according to claim 7, characterized in that: The drill drop detection mechanism comprises a chassis (232) fixedly connected to the bottom end of the air pipe (23), a sensor (233) being fixedly connected between any two adjacent chassis (232), a plurality of empty slots (152) being evenly spaced at the bottom of the copper shell (15), the straight slots (161) corresponding in number and position to the empty slots (152), and the two being connected.

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