A rock layer sampling device for geological exploration and a geological exploration method

Abstract

The present invention provides a rock formation sampling device for geological exploration and a geological exploration method, and relates to the technical field of geological exploration. The rock formation sampling device for geological exploration comprises an upper drill pipe, a lower drill pipe and a drill bit seat, the surfaces of the upper drill pipe and the lower drill pipe are provided with sampling grooves, the sampling grooves are provided with sampling structures for rock formation sampling, the end surfaces of the upper drill pipe, the lower drill pipe and the drill bit seat are provided with locking grooves, and locking structures are provided inside the locking grooves between the upper drill pipe and the lower drill pipe, and between the lower drill pipe and the drill bit seat. The rock formation sampling device for geological exploration and the geological exploration method can stably connect the upper drill pipe with the lower drill pipe and stably connect the lower drill pipe with the drill bit seat through the locking structure, and can sample rock formations of different depths through the sampling structure, and can store the sampled samples for subsequent detection and use.

Description

Technical Field

[0001] The invention relates to the technical field of geological exploration, in particular to a rock stratum sampling device for geological exploration and a geological exploration method. Background Art

[0002] "Geological exploration" refers to the investigation and research activities of exploring and detecting the geology through various means and methods, determining the appropriate bearing layer, determining the foundation type according to the bearing capacity of the bearing layer, and calculating the foundation parameters;

[0003] Patent application number CN202210482146.9 discloses a rock sampling device for geological exploration and a geological exploration method, including a sampling part, a drill pipe, a connecting mechanism and an inner pipe, the lower end of the sampling part is detachably connected to the drill pipe through the connecting mechanism, the inner pipe is inserted into the interior of the sampling part and the interior of the drill pipe, the sampling part is formed by connecting a plurality of casings end to end, and two adjacent casings are detachably connected through the connecting mechanism, the casing and the drill pipe are both provided with a receiving cavity, the inner pipe is arranged in the receiving cavity, and the outer wall of the inner pipe is in contact with the inner wall of the receiving cavity, and teeth are arranged around the lower end of the drill pipe;

[0004] The above patent structure mainly connects the upper and lower groups of drill pipes through the combination of T-shaped fitting parts, reinforcement parts and T-shaped fitting grooves and reinforcement grooves. However, such connection method makes the connection between the upper and lower groups of drill pipes unstable when they rotate and are subjected to radial and axial forces, which reduces the effect of exploration sampling. At the same time, when sampling, the above patent structure only allows the sampled sample to enter the inner tube through the arc-shaped transition part of the inner tube. Such storage method is easy to confuse the samples and it is inconvenient to store samples at different positions separately. It is also easy to lose the samples, which increases the difficulty of exploration sampling. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a rock sampling device and a geological exploration method for geological exploration, which solves the problem that it is inconvenient to stably connect and use the upper and lower sets of drill pipes when sampling rock formations in geological exploration, and it is inconvenient to store the samples separately.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose of facilitating the stable connection and use of the upper and lower sets of drill pipes when sampling the rock formation in geological exploration, and facilitating the separate storage of the samples after sampling, the present invention is achieved through the following technical scheme: a rock formation sampling device for geological exploration, comprising an upper drill pipe, a lower drill pipe and a drill bit seat, the surfaces of the upper drill pipe and the lower drill pipe are provided with sampling grooves, the sampling grooves are provided with sampling structures for rock formation sampling, the end surfaces of the upper drill pipe, the lower drill pipe and the drill bit seat are provided with locking grooves, and locking structures are provided inside the locking grooves between the upper drill pipe and the lower drill pipe, and between the lower drill pipe and the drill bit seat;

[0009] The drill bit seat includes excavation teeth and wall planing teeth. The excavation teeth are welded and fixed to the bottom end of the drill bit seat, and the wall planing teeth are welded and fixed to the outer surface of the excavation teeth. The excavation teeth are provided with an excavation slope, and the wall planing teeth are provided with a wall planing slope. The excavation slope and the wall planing slope are arranged obliquely.

[0010] Preferably, the sampling structure includes an upper connecting bevel and a lower connecting bevel, the upper connecting bevel is arranged at the internal upper port of the sampling slot, the lower connecting bevel is arranged at the internal lower port of the sampling slot, the internal top and bottom surfaces of the sampling slot are provided with adapter grooves, the internal rotation of the adapter groove is connected with a ladder pin, the ladder pin is sleeved with a spiral spring, a sampling scraper is fixedly connected between the upper and lower groups of the ladder pins, the upper end of the sampling scraper is provided with an inner connecting bevel, the lower end of the sampling scraper is provided with a sampling bevel, the internal bottom surface of the sampling slot is provided with a clamping groove, the internal movably clamped with a clamping sleeve, the clamping sleeve is fixedly connected with a sampling box, the interior of the sampling box is fixedly connected with a partition, the partition divides the interior of the sampling box into two to form a feeding chamber and a storage chamber, and a channel is provided between the feeding chamber and the storage chamber.

[0011] Preferably, the sampling scraper is rotatably connected to the sampling slot through two sets of upper and lower ladder pins. The sampling slot and the sampling scraper are in the shape of a parallelogram as a whole. The outer curvature of the sampling scraper is consistent with the outer curvature of the upper drill pipe and the lower drill pipe. One end of the spiral spring is fixedly connected to the inner wall of the adapter slot, and the other end is fixedly connected to the ladder pin.

[0012] Preferably, the thickness of the lower end of the sampling scraper is greater than the thickness of the upper end thereof, the sampling scraper is arranged obliquely downward, the upper connecting bevel is adapted to the inner connecting bevel, the surfaces of the upper connecting bevel and the inner connecting bevel are both provided with magnetic panels, and through magnetic attraction, the lower connecting bevel is adapted to the sampling bevel.

[0013] Preferably, the sampling box is movably connected to the sampling slot via a snap-in slot and a snap-in sleeve, the partition is tilted, the inner floor of the storage chamber is tilted, and the feed chamber and the storage chamber are connected via a channel.

[0014] Preferably, the locking structure includes a rubber plug and a screw, the rubber plug is inserted at the end of the locking groove, the screw is inserted into the interior of the locking groove, a screw sleeve is threadedly connected to the screw, and an inner end of the screw is fixedly connected to two sets of upper and lower locking rods, the end surfaces of the upper drill pipe, the lower drill pipe and the drill bit seat are provided with locking ports, the locking ports are provided with locking spiral grooves, a locking spiral block is inserted into the locking spiral groove, and the locking spiral block is welded and fixed to the bottom ends of the upper drill pipe and the lower drill pipe, and a locking spiral groove is provided on the outer surface of the locking spiral block.

[0015] Preferably, the screw rod is slidably connected to the locking groove, and the screw sleeve is in contact with the inner side wall of the locking groove.

[0016] Preferably, the locking spiral groove and the locking spiral block are spiral-shaped as a whole, and the width of the upper part of the locking spiral groove and the locking spiral block is greater than the width of the lower part.

[0017] Preferably, the upper and lower groups of locking rods are arranged obliquely, the upper locking rods are connected to the inner top surface of the locking spiral groove, and the lower locking rods are connected to the inner bottom surface of the locking spiral groove.

[0018] A method for using a rock stratum sampling device for geological exploration comprises the following steps:

[0019] The first step is to place the drill bit seat under the lower drill pipe, insert the locking screw block into the end of the locking port, and then rotate the lower drill pipe counterclockwise to insert the locking screw block into the locking screw groove. The locking screw block can be pressed against and fixed by the screw rod. Similarly, the upper drill pipe is placed above the lower drill pipe, and the upper drill pipe and the lower drill pipe can be stably connected. Then, the upper drill pipe is connected to an external power source, which can drive the upper drill pipe, the lower drill pipe and the drill bit seat to rotate counterclockwise. The more the upper drill pipe, the lower drill pipe and the drill bit seat rotate, the more stable the connection between them is.

[0020] The second step is to place the drill bit seat on the surface of the rock to be sampled, and manually press down the upper drill pipe, the lower drill pipe and the drill bit seat, so that the drill bit seat can drive the excavation teeth and the wall planing teeth to rotate, and the rock can be drilled downwards to form a columnar deep hole through the excavation teeth, and the inner wall of the columnar deep hole can be planed through the wall planing teeth to expand the diameter of the columnar deep hole, so that the upper drill pipe, the lower drill pipe and the drill bit seat can be taken out later, and the rock fragments can be thrown outwards through the excavation slope, and the rock fragments thrown outwards can be thrown upwards to the position of the sampling slot through the wall planing slope, so that the sampling slot can be sampled later;

[0021] The third step is that during the rotation of the upper and lower drill pipes, the sampling scraper is light at the upper end and heavy at the lower end, so that the sampling scraper rotates clockwise due to the centrifugal force and opens the sampling slot. After the sampling scraper is unfolded, the rock debris thrown upward can be collected into the sampling slot through the sampling slope. At the same time, the sampling scraper can also scrape the inner wall of the columnar deep hole for sampling;

[0022] In the fourth step, the rock fragments after sampling enter the feed cavity inside the sampling box along the sampling groove, and the samples inside the feed cavity can enter the storage cavity through the channel, and the partition can prevent the samples from scattering, so that the samples can be stored in the storage cavity. After the upper drill pipe and the lower drill pipe are taken out upward, the sampling scraper is manually turned to open it, and then the sampling box can be removed from the sampling groove.

[0023] (III) Beneficial effects

[0024] The present invention provides a rock sampling device for geological exploration and a geological exploration method. The device has the following beneficial effects:

[0025] The locking screw block is inserted into the locking screw groove, and the screw rod is moved inwardly so that the inner end of the screw rod abuts against the inner surface of the locking screw groove, and the upper and lower locking rods also abut against the inner top and bottom surfaces of the locking screw groove respectively. The screw sleeve can be rotated to fix the screw rod and the lower drill pipe. Therefore, the locking screw block can also be fixed in the locking screw groove through the screw rod. Similarly, the upper drill pipe and the lower drill pipe can be fixedly connected in the same way, and during the counterclockwise rotation of the upper drill pipe, the lower drill pipe and the drill head seat, the locking screw block is rotated counterclockwise inside the locking screw groove More and more tighter, and at the same time, during the counterclockwise rotation of the locking screw block, the inner top and bottom surfaces of the locking screw groove can toggle the upper and lower locking rods, so that the locking rod can drive the screw rod to rotate clockwise, so that the screw rod can tighten the locking screw block, thereby improving the stability of the connection between the upper drill pipe, the lower drill pipe and the drill head seat during drilling.

[0026] 2. In the process of drilling by the drill bit seat driving the excavation teeth and the wall planing teeth to rotate counterclockwise, the excavation teeth can drill downward into the rock and form a columnar deep hole, and the wall planing teeth can plan the inner wall of the columnar deep hole to expand the diameter of the columnar deep hole, so that the upper drill pipe, the lower drill pipe and the drill bit seat can be taken out upward later, and the rock fragments can be thrown outward through the excavation inclined surface, and the rock fragments thrown outward can be thrown upward through the wall planing inclined surface, so as to prevent the rock fragments from affecting the downward drilling effect of the excavation teeth and the wall planing teeth.

[0027] 3. The diameter of the cylindrical deep hole after drilling by the excavation teeth is expanded by the wall-planing teeth. During the counterclockwise rotation of the upper drill pipe and the lower drill pipe, the sampling scraper can rotate counterclockwise and expand due to the centrifugal force, and the upper end of the sampling scraper rotates inward to press against the upper inner wall of the sampling groove and limit the sampling scraper, while the lower end of the sampling scraper rotates outward to contact the inner wall of the cylindrical deep hole. Therefore, during the counterclockwise rotation of the sampling scraper, the inner wall of the cylindrical deep hole can be planed, so that the sampling box can preserve the rock sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is an expanded view of the sampling scraper of the structure of the present invention;

[0030] Figure 3 This is a schematic diagram of a drill pipe lowering structure of the present invention;

[0031] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram of the structure at center A;

[0032] Figure 5 This is a schematic diagram of the sampling box structure of the present invention;

[0033] Figure 6 This is a schematic diagram of a sampling scraper of the structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the sampling tank structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the locking spiral groove of the structure of the present invention;

[0036] Fig. 9 It is a partial cross-sectional view of the drill pipe of the structure of the present invention;

[0037] Fig.10 For the present invention Fig. 9 A partial enlarged schematic diagram of the structure at point B in the middle.

[0038] Among them, 1. upper drill pipe; 2. lower drill pipe; 3. drill bit seat; 301. excavation teeth; 302. wall planing teeth; 303. excavation slope; 304. wall planing slope; 4. sampling groove; 401. upper connecting slope; 402. lower connecting slope; 403. adapter groove; 404. step pin; 405. spiral spring; 406. sampling scraper; 407. inner slope; 408. sampling slope Surface; 409, snap-on groove; 410, snap-on sleeve; 411, sampling box; 412, partition; 413, feed chamber; 414, storage chamber; 415, channel; 5, locking groove; 501, rubber plug; 502, screw; 503, screw sleeve; 504, locking rod; 505, locking mouth; 506, locking spiral groove; 507, locking spiral block; 508, locking spiral groove. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with the accompanying drawings and embodiments. In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] See also Figure 1-Figure 10 The present invention provides a technical solution: a rock formation sampling device for geological exploration, comprising an upper drill pipe 1, a lower drill pipe 2 and a drill bit seat 3, the surfaces of the upper drill pipe 1 and the lower drill pipe 2 are provided with sampling grooves 4, the sampling grooves 4 are provided with sampling structures for rock formation sampling, the end surfaces of the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 are provided with locking grooves 5, and locking structures are provided inside the locking grooves 5 between the upper drill pipe 1 and the lower drill pipe 2, and between the lower drill pipe 2 and the drill bit seat 3;

[0041] The drill bit seat 3 includes excavation teeth 301 and wall planing teeth 302. The excavation teeth 301 are welded and fixed to the bottom end of the drill bit seat 3, and the wall planing teeth 302 are welded and fixed to the outer surface of the excavation teeth 301. The excavation teeth 301 are provided with excavation bevels 303, and the wall planing teeth 302 are provided with wall planing bevels 304. The excavation bevels 303 and the wall planing bevels 304 are inclinedly arranged. By connecting the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3, when the sampling depth is deeper, the lower drill pipe 2 is connected to the external power source, so that the external power source can drive the upper drill pipe 1 or the lower drill pipe 2 to rotate counterclockwise, and then the upper drill pipe 1 can drive the drill bit seat 3 to rotate counterclockwise, and then the drill bit seat 3 is placed on the rock surface to be sampled, and the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 are manually pressed down, so that the rock can be drilled.

[0042] In this embodiment, the sampling structure includes an upper connecting bevel 401 and a lower connecting bevel 402, the upper connecting bevel 401 is opened at the internal upper port of the sampling slot 4, the lower connecting bevel 402 is opened at the internal lower port of the sampling slot 4, the internal top and bottom surfaces of the sampling slot 4 are provided with a transfer groove 403, the interior of the transfer groove 403 is rotatably connected with a ladder pin 404, the ladder pin 404 is sleeved with a spiral spring 405, and a sampling scraper 406 is fixedly connected between the upper and lower sets of ladder pins 404, and the upper end of the sampling scraper 406 is provided with There is an inscribed inclined surface 407, a sampling inclined surface 408 is provided at the lower end of the sampling scraper 406, a clamping groove 409 is provided on the inner bottom surface of the sampling groove 4, a clamping sleeve 410 is movably clamped inside the clamping groove 409, a sampling box 411 is fixedly connected to the clamping sleeve 410, a partition 412 is fixedly connected inside the sampling box 411, the partition 412 divides the interior of the sampling box 411 into two parts to form a feeding chamber 413 and a storage chamber 414, and a channel 415 is provided between the feeding chamber 413 and the storage chamber 414;

[0043] For details, please refer to the attached manual. Figure 4 As shown, when the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 are stationary, the sampling scraper 406 is not unfolded and the sampling slot 4 is closed. When the upper drill pipe 1 or the lower drill pipe 2 rotates, the sampling scraper 406 can rotate counterclockwise and unfold due to the centrifugal force. At this time, the upper connecting bevel 401 is separated from the inner connecting bevel 407, and the lower connecting bevel 402 is separated from the sampling bevel 408. The spiral spring 405 is deformed, so that the sampling scraper 406 contacts the inner wall of the cylindrical deep hole, so that the subsequent sampling scraper 406 can take samples and push the rock formation sample into the sampling slot 4. Through the sampling slot 4 on the surface of the upper drill pipe 1 and the lower drill pipe 2, rock formations at different depths can be sampled.

[0044] In this embodiment, the sampling scraper 406 is rotatably connected to the sampling slot 4 through two sets of upper and lower step pins 404. The sampling slot 4 and the sampling scraper 406 are in a parallelogram shape as a whole. The outer curvature of the sampling scraper 406 is consistent with the outer curvature of the upper drill pipe 1 and the lower drill pipe 2. One end of the spiral spring 405 is fixedly connected to the inner wall of the adapter slot 403, and the other end is fixedly connected to the step pin 404.

[0045] Specifically, the sampling scraper 406 is rotatably connected to the sampling trough 4 through two sets of upper and lower step pins 404, and the sampling scraper 406 is tilted downward so that when the sampling scraper 406 rotates counterclockwise, it can better perform planing and sampling.

[0046] In this embodiment, the thickness of the lower end of the sampling scraper 406 is greater than the thickness of the upper end thereof, and the sampling scraper 406 is arranged obliquely downward, and the upper connecting bevel 401 is adapted to the inner connecting bevel 407, and the surfaces of the upper connecting bevel 401 and the inner connecting bevel 407 are both provided with magnetic panels, and through magnetic attraction, the lower connecting bevel 402 is adapted to the sampling bevel 408;

[0047] Specifically, the centrifugal force on the sampling scraper 406 must be greater than the elastic force of the spiral spring 405 and the magnetic attraction of the upper connected bevel 401 and the inner connected bevel 407, so that the sampling scraper 406 can be expanded by the centrifugal force when it rotates. When the sampling is completed, the sampling scraper 406 can be reset by the spiral spring 405, and the sampling scraper 406 can be fixed at the port of the sampling slot 4 by the magnetic attraction of the upper connected bevel 401 and the inner connected bevel 407, so that the curvature of the sampling scraper 406 is consistent with the curvature of the upper drill pipe 1 and the lower drill pipe 2.

[0048] In this embodiment, the sampling box 411 is movably connected to the sampling slot 4 through the snap-in slot 409 and the snap-in sleeve 410, the partition plate 412 is tilted, the inner floor of the storage chamber 414 is tilted, and the feed chamber 413 is connected to the storage chamber 414 through the channel 415;

[0049] Specifically, the rock fragments after sampling enter the feed chamber 413 inside the sampling box 411 along the sampling groove 4, and the sample inside the feed chamber 413 can enter the storage chamber 414 through the channel 415, and the partition 412 can prevent the sample from scattering, so that the sample can be stored in the storage chamber 414.

[0050] In this embodiment, the locking structure includes a rubber plug 501 and a screw rod 502. The rubber plug 501 is inserted at the end of the locking groove 5, and the screw rod 502 is inserted into the locking groove 5. A screw sleeve 503 is threadedly connected to the screw rod 502. An inner end of the screw rod 502 is fixedly connected with two sets of upper and lower locking rods 504. The end surfaces of the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 are provided with locking ports 505. A locking spiral groove 506 is provided inside the locking port 505. A locking spiral block 507 is inserted into the locking spiral groove 506. The locking spiral block 507 is welded and fixed to the bottom ends of the upper drill pipe 1 and the lower drill pipe 2. A locking spiral groove 508 is provided on the outer surface of the locking spiral block 507.

[0051] For details, please refer to the attached manual. Fig.10 As shown, after the locking spiral block 507 is inserted into the locking spiral groove 506, the screw 502 is moved inward so that the inner end of the screw 502 abuts against the inner surface of the locking spiral groove 508. At this time, the upper and lower sets of locking rods 504 also abut against the inner top and bottom surfaces of the locking spiral groove 508 respectively. Then, the screw sleeve 503 is rotated to fix the screw 502 to the lower drill pipe 2. Therefore, the locking spiral block 507 can also be fixed to the inside of the locking spiral groove 506 through the screw 502. Similarly, the upper drill pipe 1 and the lower drill pipe 2 can also be fixedly connected in the same way.

[0052] In this embodiment, the screw rod 502 is slidably connected to the locking groove 5, and the screw sleeve 503 is in contact with the inner wall of the locking groove 5;

[0053] Specifically, the screw sleeve 503 is rotatably connected to the locking groove 5. When the screw sleeve 503 is rotated, the screw rod 502 can be driven to move horizontally. The friction between the screw sleeve 503 and the inner wall of the locking groove 5 can also fix the screw rod 502 inside the locking groove 5.

[0054] In this embodiment, the locking spiral groove 506 and the locking spiral block 507 are spiral in shape as a whole, and the width of the upper part of the locking spiral groove 506 and the locking spiral block 507 is greater than the width of the lower part;

[0055] Specifically, when the locking spiral block 507 is inserted into the locking spiral groove 506, the locking spiral block 507 is inserted tighter and tighter, so that the locking spiral block 507 can be tightly connected to the locking spiral groove 506, so as to improve the stability when the upper drill pipe 1 is connected to the lower drill pipe 2 and the lower drill pipe 2 is connected to the drill bit seat 3.

[0056] In this embodiment, the upper and lower locking rods 504 are arranged obliquely, the upper locking rod 504 is connected to the inner top surface of the locking spiral groove 508, and the lower locking rod 504 is connected to the inner bottom surface of the locking spiral groove 508;

[0057] Specifically, when the locking spiral block 507 rotates, the inner top surface of the locking spiral groove 508 can drive the upper locking rod 504 to rotate clockwise, and the inner bottom surface of the locking spiral groove 508 can drive the lower locking rod 504 to rotate clockwise, so that the upper and lower sets of locking rods 504 can drive the screw 502 to rotate. At this time, the screw sleeve 503 is kept stationary by the friction between it and the inner wall of the locking groove 5, so that the screw 502 can be pressed against the locking spiral block 507 to fix it.

[0058] A method for using a rock stratum sampling device for geological exploration comprises the following steps:

[0059] The first step is to place the drill bit seat 3 under the lower drill pipe 2, and then insert the locking screw block 507 into the end of the locking port 505, and then rotate the lower drill pipe 2 counterclockwise to insert the locking screw block 507 into the locking screw groove 506, and the screw 502 can resist the locking screw block 507 and fix the locking screw block 507. Similarly, the upper drill pipe 1 is placed on the upper part of the lower drill pipe 2, and the upper drill pipe 1 and the lower drill pipe 2 can also be stably connected. Then, the upper drill pipe 1 is connected to an external power source, which can drive the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 to rotate counterclockwise. Through the locking screw block 507 and the locking screw groove 506, the more the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 rotate, the more stable the connection between them is.

[0060] The second step is to place the drill bit seat 3 on the surface of the rock to be sampled, and manually press down the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3, so that the drill bit seat 3 can drive the excavation teeth 301 and the wall-planing teeth 302 to rotate, and the rock can be drilled downwards to form a columnar deep hole through the excavation teeth 301, and the inner wall of the columnar deep hole can be planed through the wall-planing teeth 302 to expand the diameter of the columnar deep hole, so that the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 can be taken out later, and the rock fragments can be thrown outwards through the excavation inclined surface 303, and the rock fragments thrown outwards can be thrown upwards to the position of the sampling slot 4 through the wall-planing inclined surface 304, so that the sampling slot 4 can be sampled later;

[0061] In the third step, during the rotation of the upper drill pipe 1 and the lower drill pipe 2, the sampling scraper 406 is light at the upper end and heavy at the lower end, so that the sampling scraper 406 rotates clockwise due to the centrifugal force and opens the sampling slot 4. After the sampling scraper 406 is unfolded, the rock debris thrown upward can be collected into the sampling slot 4 through the sampling inclined surface 408, and the sampling scraper 406 can also scrape the inner wall of the columnar deep hole for sampling;

[0062] In the fourth step, the rock fragments after sampling enter the feed chamber 413 inside the sampling box 411 along the sampling slot 4, and the samples inside the feed chamber 413 can enter the storage chamber 414 through the channel 415, and the partition 412 can prevent the samples from scattering, so that the samples can be stored in the storage chamber 414. After the upper drill pipe 1 and the lower drill pipe 2 are taken out upward, the sampling scraper 406 is manually rotated to open it, and then the sampling box 411 can be removed from the sampling slot 4.

[0063] The working principle and use process of the present invention are as follows: by inserting the locking screw block 507 at the bottom end of the lower drill pipe 2 into the locking port 505, keeping the drill bit seat 3 stationary and rotating the lower drill pipe 2, so that the locking screw block 507 is inserted into the locking screw groove 506, as shown in the attached manual. Fig.10As shown, after the locking spiral block 507 is inserted into the locking spiral groove 506, the screw rod 502 is moved inwardly so that the inner end of the screw rod 502 abuts against the inner surface of the locking spiral groove 508. At this time, the upper and lower locking rods 504 also abut against the inner top and bottom surfaces of the locking spiral groove 508 respectively. Then, the screw sleeve 503 is rotated to fix the screw rod 502 to the lower drill pipe 2. Therefore, the locking spiral block 507 can also be fixed to the inside of the locking spiral groove 506 through the screw 502. Similarly, the upper drill pipe 1 and the lower drill pipe 2 can be fixedly connected in the same way. When the sampling depth is shallow, only the upper drill pipe 1 needs to be connected to the external power source. When the sampling depth is deep, the lower drill pipe 2 needs to be connected to the external power source so that the external power source can The upper drill pipe 1 or the lower drill pipe 2 can be driven to rotate counterclockwise, so that the upper drill pipe 1 can drive the drill bit seat 3 to rotate counterclockwise, and then the drill bit seat 3 is placed on the rock surface to be sampled, and the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 are pressed down manually, so that the rock can be drilled and a columnar deep hole can be formed on the rock. In the process of counterclockwise rotation of the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 for drilling, since the locking spiral groove 506 and the locking spiral block 507 are both spiral, and the locking spiral groove 506 and the locking spiral block 507 are wide at the top and narrow at the bottom, the locking spiral block 507 becomes tighter and tighter as it rotates counterclockwise inside the locking spiral groove 506. At the same time, in the process of counterclockwise rotation of the locking spiral block 507, the inner top and bottom surfaces of the locking spiral groove 508 can be tightened. The upper and lower locking rods 504 can be moved to enable the locking rod 504 to drive the screw rod 502 to rotate clockwise, so that the screw rod 502 can tighten the locking spiral block 507, thereby improving the stability of the connection between the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 during drilling. In the process of the drill bit seat 3 driving the excavation teeth 301 and the planing teeth 302 to rotate counterclockwise for drilling, the excavation teeth 301 can be used to drill the rock downward to form a columnar deep hole, and the planing teeth 302 can be used to plan the inner wall of the columnar deep hole to expand the diameter of the columnar deep hole, so as to facilitate the subsequent upward removal of the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3, and the excavation inclined surface 303 can be used to throw rock debris outward, and the planing inclined surface 303 can be used to remove rock debris. The rock fragments thrown outward by the surface 304 are thrown upward to prevent the rock fragments from affecting the downward drilling effect of the excavation teeth 301 and the wall-cutting teeth 302. In addition, the diameter of the columnar deep hole drilled by the excavation teeth 301 is expanded by the wall-cutting teeth 302. In the process of the counterclockwise rotation of the upper drill pipe 1 and the lower drill pipe 2, the sampling scraper 406 is light at the upper end and heavy at the lower end, so that the sampling scraper 406 can rotate counterclockwise and unfold due to the action of centrifugal force. At this time, the upper connecting bevel 401 is separated from the inner connecting bevel 407, and the lower connecting bevel 402 is separated from the sampling bevel 408. The spiral spring 405 is deformed, and the upper end of the sampling scraper 406 rotates inward to press against the upper inner wall of the sampling groove 4, and the sampling scraper 406 is limited.The lower end of the sampling scraper 406 rotates outward to contact the inner wall of the cylindrical deep hole. Therefore, during the counterclockwise rotation of the sampling scraper 406, the inner wall of the cylindrical deep hole can be planed, and the planed rock sample falls into the interior of the sampling groove 4 and slides down into the feed chamber 413. The rock sample inside the feed chamber 413 enters the storage chamber 414 through the channel 415, so that the rock sample is finally accumulated at the inner bottom of the storage chamber 414, and the partition 412 can prevent the rock sample from splashing out of the sampling box. 411, so that the rock samples can be preserved. After the sampling is completed, the sampling scraper 406 can be driven to reset by the spiral spring 405, and the sampling scraper 406 can be magnetically fixed to the port of the sampling slot 4 through the upper connecting bevel 401 and the inner connecting bevel 407. Then, the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 are manually taken out upwards. When the upper drill pipe 1, the lower drill pipe 2 and the drill bit seat 3 are moved out of the rock layer, the sampling scraper 406 is rotated to take the sampling box 411 out of the sampling slot 4, which is convenient for the staff to conduct subsequent research and detection.

[0064] Although 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 appended claims and their equivalents.

Claims

1. A rock sampling device for geological exploration, comprising an upper drill pipe (1), a lower drill pipe (2) and a drill bit seat (3), characterized in that: The surfaces of the upper drill pipe (1) and the lower drill pipe (2) are provided with sampling grooves (4), and a sampling structure for rock formation sampling is arranged inside the sampling grooves (4); the end surfaces of the upper drill pipe (1), the lower drill pipe (2) and the drill bit seat (3) are provided with locking grooves (5), and locking structures are arranged inside the locking grooves (5) between the upper drill pipe (1) and the lower drill pipe (2), and between the lower drill pipe (2) and the drill bit seat (3); The drill bit seat (3) comprises excavation teeth (301) and wall planing teeth (302); the excavation teeth (301) are welded and fixed to the bottom end of the drill bit seat (3); the wall planing teeth (302) are welded and fixed to the outer surface of the excavation teeth (301); an excavation inclined surface (303) is provided on the excavation teeth (301); a wall planing inclined surface (304) is provided on the wall planing teeth (302); the excavation inclined surface (303) and the wall planing inclined surface (304) are arranged obliquely; The sampling structure comprises an upper connecting bevel (401) and a lower connecting bevel (402), wherein the upper connecting bevel (401) is arranged at an internal upper port of the sampling slot (4), and the lower connecting bevel (402) is arranged at an internal lower port of the sampling slot (4); the internal top surface and the bottom surface of the sampling slot (4) are provided with a transfer groove (403); a ladder pin (404) is rotatably connected inside the transfer groove (403); a spiral spring (405) is sleeved on the ladder pin (404); a sampling scraper (406) is fixedly connected between the upper and lower groups of the ladder pins (404); and the upper end of the sampling scraper (406) is provided with an internally connected bevel ( 407), a sampling inclined surface (408) is provided at the lower end of the sampling scraper (406), a snap-fitting groove (409) is provided on the inner bottom surface of the sampling groove (4), a snap-fitting sleeve (410) is movably snap-fitted inside the snap-fitting groove (409), a sampling box (411) is fixedly connected to the snap-fitting sleeve (410), a partition (412) is fixedly connected inside the sampling box (411), the partition (412) divides the interior of the sampling box (411) into two parts to form a feeding chamber (413) and a storage chamber (414), and a passage (415) is provided between the feeding chamber (413) and the storage chamber (414); The locking structure comprises a rubber plug (501) and a screw rod (502), wherein the rubber plug (501) is inserted at the end of the locking groove (5), the screw rod (502) is inserted into the interior of the locking groove (5), a screw sleeve (503) is threadedly connected to the screw rod (502), and an inner end of the screw rod (502) is fixedly connected to two sets of upper and lower locking rods (504), and the end surfaces of the upper drill pipe (1), the lower drill pipe (2) and the drill bit seat (3) are provided with locking openings (505), and a locking spiral groove (506) is provided inside the locking openings (505), and a locking spiral block (507) is inserted into the interior of the locking spiral groove (506), and the locking spiral block (507) is welded and fixed to the bottom ends of the upper drill pipe (1) and the lower drill pipe (2), and a locking spiral groove (508) is provided on the outer surface of the locking spiral block (507).

2. A rock sampling device for geological exploration according to claim 1, characterized in that: The sampling scraper (406) is rotatably connected to the sampling slot (4) via two sets of upper and lower step pins (404); the sampling slot (4) and the sampling scraper (406) are in a parallelogram shape as a whole; the outer curvature of the sampling scraper (406) is consistent with the outer curvature of the upper drill pipe (1) and the lower drill pipe (2); one end of the spiral spring (405) is fixedly connected to the inner wall of the adapter slot (403), and the other end is fixedly connected to the step pin (404).

3. A rock sampling device for geological exploration according to claim 2, characterized in that: The thickness of the lower end of the sampling scraper (406) is greater than the thickness of the upper end thereof. The sampling scraper (406) is arranged obliquely downward. The upper connecting bevel (401) is matched with the inner connecting bevel (407). The surfaces of the upper connecting bevel (401) and the inner connecting bevel (407) are both provided with magnetic panels and are attracted to each other by magnetism. The lower connecting bevel (402) is matched with the sampling bevel (408).

4. A rock sampling device for geological exploration according to claim 3, characterized in that: The sampling box (411) is movably connected to the sampling slot (4) via a connecting slot (409) and a connecting sleeve (410); the partition plate (412) is arranged at an angle; the inner floor of the material storage chamber (414) is arranged at an angle; and the feed chamber (413) and the material storage chamber (414) are connected via a channel (415).

5. A rock sampling device for geological exploration according to claim 4, characterized in that: The screw rod (502) is slidably connected to the locking groove (5), and the screw sleeve (503) is in contact with the inner side wall of the locking groove (5).

6. A rock sampling device for geological exploration according to claim 5, characterized in that: The locking spiral groove (506) and the locking spiral block (507) are spiral-shaped as a whole, and the width of the upper part of the locking spiral groove (506) and the locking spiral block (507) is greater than the width of the lower part.

7. A rock sampling device for geological exploration according to claim 6, characterized in that: The upper and lower locking rods (504) are arranged obliquely, the upper locking rod (504) is connected to the inner top surface of the locking spiral groove (508), and the lower locking rod (504) is connected to the inner bottom surface of the locking spiral groove (508).

8. A geological prospecting method, according to a rock sampling device for geological prospecting according to any one of claims 1 to 7, characterized in that: The following steps are involved: The first step is to place the drill bit seat (3) below the lower drill pipe (2), then insert the locking spiral block (507) into the end of the locking port (505), and then rotate the lower drill pipe (2) counterclockwise to insert the locking spiral block (507) into the locking spiral groove (506). The screw (502) can resist the locking spiral block (507) and fix the locking spiral block (507). Similarly, the upper drill pipe (1) is placed above the lower drill pipe (2), so that the upper drill pipe (1) and the lower drill pipe (2) can be stably connected. Then, the upper drill pipe (1) is connected to an external power source, which can drive the upper drill pipe (1), the lower drill pipe (2) and the drill bit seat (3) to rotate counterclockwise. The locking spiral block (507) and the locking spiral groove (506) make the connection between the upper drill pipe (1), the lower drill pipe (2) and the drill bit seat (3) more stable as they rotate. The second step is to place the drill bit seat (3) on the surface of the rock to be sampled, and manually press down the upper drill pipe (1), the lower drill pipe (2) and the drill bit seat (3), so that the drill bit seat (3) can drive the excavation teeth (301) and the wall planing teeth (302) to rotate, and the rock can be drilled downwards by the excavation teeth (301) to form a columnar deep hole, and the inner wall of the columnar deep hole can be planed by the wall planing teeth (302) to expand the diameter of the columnar deep hole, so that the upper drill pipe (1), the lower drill pipe (2) and the drill bit seat (3) can be removed later, and rock fragments can be thrown outwards by the excavation inclined surface (303), and the rock fragments thrown outwards can be thrown upwards to the position of the sampling slot (4) by the wall planing inclined surface (304), so that the sampling slot (4) can be sampled later; In the third step, during the rotation of the upper drill pipe (1) and the lower drill pipe (2), the sampling scraper (406) is light at the upper end and heavy at the lower end, so that the sampling scraper (406) rotates clockwise due to the centrifugal force and opens the sampling slot (4). After the sampling scraper (406) is unfolded, the rock debris thrown upward can be collected into the sampling slot (4) through the sampling inclined surface (408), and the sampling scraper (406) can also scrape the inner wall of the columnar deep hole for sampling; In the fourth step, the sampled rock fragments enter the feed cavity (413) inside the sampling box (411) along the sampling groove (4), and the sample inside the feed cavity (413) can enter the storage cavity (414) through the channel (415), and the partition (412) can prevent the sample from scattering, so that the sample can be stored in the storage cavity (414). After the upper drill pipe (1) and the lower drill pipe (2) are taken out upward, the sampling scraper (406) is manually rotated to open it, and then the sampling box (411) is removed from the sampling groove (4).

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