302 results about "Core drill" patented technology

The invention relates to the field of tunnel engineering, and discloses a vertical drilling and grouting all-in-one machine for micro-disturbance grouting in a subway tunnel hole and a technological method.The vertical drilling and grouting all-in-one machine comprises a base used for supporting the whole device, a sliding rail is installed on the inner wall of the base, and a supporting frame is installed at the end, close to the center line of the base, of the sliding rail; a drilling and injecting mechanism is arranged on the outer wall of the sliding rail, and a sealing assembly is arranged on the upper surface of the base. The drilling and injecting mechanism comprises a sliding frame, the sliding frame is slidably connected to the outer wall of the sliding rail, the front surface of the sliding frame is fixedly connected with a supporting plate, the lower surface of the supporting plate is rotatably connected with a drilling rod, and the lower end of the drilling rod is in threaded connection with a connector. According to the drilling and grouting device, the drilling and grouting mechanism is arranged, the hollow drill rod is adopted for drilling, during grouting operation, drilling operation can be achieved through rotation of the drill rod, then the drill rod can be directly connected with grouting equipment, and therefore grouting can be achieved through the drill rod directly.

The invention relates to the technical field of geological sample preparation, in particular to special coring equipment for a hard broken stratum in geothermal drilling, which comprises a counterweight support and further comprises a rotary sample drilling structure connected with the counterweight support, the rotary sample drilling structure comprises a rotary lifting driving part, a limiting rotary driving part is mounted on the rotary lifting driving part, and the limiting rotary driving part is connected with the counterweight support. The limiting rotation driving part is connected with a pile casing, the outer wall of the pile casing is fixedly connected with four sets of buckling frames, the lower end of the pile casing is fixedly provided with a core drill bit, and four sets of pneumatic glue filling parts are installed in the pile casing; and the power-assisted separation part is connected with the rotary lifting driving part. Through cooperation of the rotary sample drilling structure and the power-assisted separation part, while the rock core sample is drilled, the rock core sample in a broken and loose state is fixed in a manner of filling transparent epoxy resin glue, so that complete collapse and mixing of the interior of the rock core sample in the taking-out and transporting process are avoided; subsequent observation and analysis of the rock core sample are facilitated, and the difficulty of subsequent analysis of the rock core sample is reduced.

The application discloses a coal rock anti-burst method of large-range seam forming by remote controllable shock wave and hydraulic fracturing, and comprises the following steps: step one, detecting and recording the stress concentration degree of target coal seam or rock stratum; step two, drilling; step three, withdrawing the hollow drill rod, arranging the discharge electrode connected with the cable at the front end of the hollow drill rod, and sending the discharge electrode into the drill hole through the hollow drill rod; step four, sealing the hole by using a hole sealer and performing hydraulic fracturing; steps five to seven, completing multiple repeated electric pulse discharge operations; and step eight, testing the pressure relief effect of the coal seam or rock stratum. The method uses the drilling cuttings method, high-pressure hydraulic fracturing and high-voltage electric pulse to perform large-range cracking and pressure relief on the coal rock stratum, changes the stress state of the coal rock stratum, and reduces the stress concentration degree, so that the anti-burst purpose is achieved. The method is mainly applied to deep coal rock body tunneling roadways and coal mining working faces containing coal rock body impact tendency.

The utility model discloses a drill core auxiliary device for preventing road surface pollution, which belongs to the technical field of drill core auxiliary for preventing road surface pollution and comprises a fixing frame, a moving component is arranged at the top of the fixing frame, a protective cylinder body is connected to the side surface of the moving component, a mounting cylinder is connected to the side surface of the protective cylinder body, and an adjusting component is connected to the side surface of the mounting cylinder. By arranging the moving assembly, the device can move through pulleys, the device can be moved and carried more easily and conveniently, a rotating shaft is rotated to drive two second bevel gears to rotate, two screw rods can rotate synchronously under meshing transmission between the second bevel gears and the first bevel gears, and the screw rods can rotate synchronously under meshing connection between the screw rods and sliding blocks. The sliding block can drive the protection barrel body to move downwards and fall to the ground; by arranging the adjusting assembly, the position of the waste liquid collecting disc can be rapidly adjusted under the sliding connection between the telescopic column and the mounting cylinder, waste liquid is prevented from crossing the waste liquid collecting disc, and therefore the using effect is better.

The utility model discloses a large bolt broken wire taking device, which belongs to the technical field of bolt broken wire taking devices and comprises a clamping mould, and two fixing components are arranged on one side of the top of the clamping mould. According to the clamping fixture for the high-pressure pump body flange, the hand cranking device is manually operated to drive the rotating shaft, the gear, the annular gear and the protruding block to move, the rolling wheel drives the transverse plate and the fixing abutting block to move in the direction of the bolt, the outer surface of the bolt is fixed, the clamping fixture is rapidly fixed to the high-pressure pump body flange, and therefore the portability of the clamping fixture in the using process is improved; wherein the size of the hollow drill can be selected and adjusted according to actual needs, connection of the large hollow drill and the magnetic drill is achieved through the adapter, the use range of the device is expanded, and the device avoids the risk of damage to the device body due to alignment deviation during drilling in a centering and alignment mode.

A method for operating a power tool, wherein the power tool is initially operated with a first combination of operating parameters such that a first working progress is obtained. During operation of the power tool with the first combination of operating parameters, the first working progress can be determined and compared with a second working progress that is obtained when the power tool is operated with a second combination of operating parameters. Depending on the result of the comparison, the power tool can continue to be operated with the second combination of operating parameters or the power tool can return to operation with the first combination of operating parameters. This comparison of the working progresses can be repeated until a maximum, i.e. optimal working progress is reached or found. A power tool, wherein the power tool is preferably in the form of a drill, preferably a core drill.

The utility model relates to the technical field of mining equipment, in particular to a multifunctional mining drilling rig which comprises two symmetrically-arranged supporting legs and a portal frame, a movable plate capable of moving up and down is arranged below the portal frame, and two hydraulic cylinders are symmetrically and fixedly connected to the bottom of the portal frame. Piston rods of the two hydraulic cylinders are fixedly connected with the top of the movable plate, the portal frame is rotationally mounted between the two supporting legs, a drill rod is rotationally mounted at the bottom of the movable plate, a drill bit capable of moving up and down is coaxially mounted at the bottom of the drill rod, the drill rod is hollow, and a plurality of sampling assemblies are mounted in the drill rod and located above the drill bit. Stable support is formed through the symmetrically-arranged supporting legs and the portal frame, the movable plate below the portal frame is driven by the hydraulic cylinder to move up and down, and accurate control over a drill rod and a drill bit is achieved; the drill rod is hollow, the sampling assembly is integrated in the drill rod, sampling can be carried out in the drilling process, and the working efficiency is improved.

1. Name of the product under this design: Crawler-type fully hydraulic core drill (ET150). 2. Application of this design product: Applicable to engineering surveys such as railways, highways, bridges, tunnels, subways, urban underground spaces, and civil engineering. It can meet the needs of geotechnical engineering such as multi-angle drilling, sampling, standard penetration, dynamic exploration and in-situ testing. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The utility model relates to a novel valve seat which comprises a valve body and a connector, the valve body is designed to be cylindrical, a flow channel used for installing a valve element is arranged in the valve body, the first end of the valve body is connected with the connector, the front end of the valve element is movably inserted into an inner cavity of the connector in a penetrating mode, a spring is installed in the flow channel, and the first end of the valve body is connected with the connector. One end of the spring is screwed into a spring barrel at the rear end of the valve element, a step table is arranged in the flow channel, the spring barrel and the step table are matched and limited, the other end of the spring is connected with the second end of the valve body, and the second end and the side wall of the valve body are provided with a main discharge hole and a secondary discharge hole respectively, a protrusion is arranged on the outer wall of the rear end of the valve element, and a limiting groove is formed in the position, corresponding to the protrusion, of the inner wall of the flow channel. While mortar blockage is prevented, the protrusions on the outer wall of the valve element are movably clamped in the limiting grooves, the situation that the valve element rotates and swings when being scoured by mud in an unstable flocculating flow state, and consequently the spring is screwed is avoided, and it is guaranteed that the service life of the spring reaches the standard.

A core drill includes: a motor having a rotor, which is rotatable relative to a stator about a rotational axis extending in the front-rear direction; a speed-reducing mechanism, which is disposed more forward than the stator; an output shaft, at least a portion of which is disposed more forward than the speed-reducing mechanism and which, in the state in which a core bit is mounted thereon, is rotated by the rotational force of the rotor transmitted via the speed-reducing mechanism; a battery-mounting part, on which a battery pack is mounted; a motor-housing part, which houses the motor; a grip part, at least a portion of which is disposed along the extension of the rotational axis more rearward than the motor-housing part; and a controller, which controls the motor. In the front-rear direction, at least a portion of the controller is disposed between the motor and the grip part.

The present application belongs to the technical field of drilling coring device in the technology of oil geological exploration and well drilling, and discloses a borehole wall coring drilling tool suitable for high permeability formation of open hole, which comprises a drill bit, a plurality of chip removal holes are arranged on the side wall of the drill bit at intervals; a drill rod, one end of the drill rod is connected with the drill bit, and a plurality of spiral hollowed-out mud guide grooves are arranged on the rod wall of the drill rod at intervals and close to the drill bit. The spiral hollowed-out mud guide grooves are arranged on the rod wall of the drill rod at intervals and close to the drill bit, so that the scraping function is added to the inner and outer walls of the drill rod, the mud cake on the borehole wall can be shredded, the closed space is destroyed, the mud cake is thrown out of the drill bit by using the rotation characteristics of the drill bit, the mud slurry washes the rock debris and the drill bit, and finally the rock debris is discharged from the chip removal hole, the drilling of the rock core is reduced in resistance, the probability of drill pipe sticking is reduced, and the success rate of coring is improved.

The utility model discloses metal mine geology drilling equipment, which relates to the field of drilling equipment and comprises driving equipment, the driving equipment is mounted on a driving support through a moving frame, a platform is fixedly mounted on the driving support, a mounting part is fixedly mounted at the upper end of the platform, and the mounting part consists of a connecting ring and a mounting plate. The mounting plate is fixedly mounted on the outer wall of the connecting ring, a cleaning part is mounted on the platform, the cleaning part is composed of a mounting round pipe, a limiting insertion block, an anti-falling ring and bristles, the limiting insertion block is fixedly mounted on the outer wall of the mounting round pipe, and the mounting round pipe is fixedly sleeved with the anti-falling ring. The outer wall of the coring drill rod can be automatically cleaned, so that the cleaning burden of workers can be reduced, and the use efficiency of drilling equipment can be improved; and by arranging the mounting piece and the connecting piece, the cleaning piece can be conveniently disassembled and assembled, so that the cleaning piece can be conveniently replaced.

The invention provides a pavement coring drill device for supervision, which relates to the technical field of drilling and coring, and comprises a sampling drill cylinder, a driving joint, a positioning loop, a limiting vertical cylinder, a movable push plate, a receiving sample cylinder, a U-shaped pull rod and a screw rod, the top of the sampling drill barrel is connected with a driving joint, and the top of the driving joint is connected with a handheld drilling machine; and a positioning loop is sleeved outside the driving joint and is in contact with the top of the sampling drill barrel. The sampling drill barrel is limited and fixed through the rotating wheel in the limiting vertical barrel, so that the sampling drill barrel can drill into a pavement more quickly, and a pavement sample core located in the sampling drill barrel is pushed into the receiving sample barrel by utilizing the movable push plate, so that the integrity of the obtained pavement sample core is effectively guaranteed. The problems that an existing coring drill bit is incomplete in positioning mechanism, the drill bit is prone to wandering at the early stage of coring, the working efficiency is affected, a road surface sample core needs to be taken out of the drill bit in a tool hammer knocking mode, and the road surface coring integrity is prone to being damaged are solved.

The invention relates to the technical field of drainage tube machining, and discloses a positioning multi-linkage punching device for an integrated flat tube and a punching method thereof.The positioning multi-linkage punching device comprises a multi-degree-of-freedom moving positioning mechanism, a positioning mechanism and a punching mechanism, the pipe body clamping and positioning module is used for positioning the flat pipe and pressing the flat pipe until the upper pipe wall and the lower pipe wall are attached; according to the station rotary cutting mechanism, a power unit drives a gear linkage unit to synchronously drive a plurality of hollow drill bits to conduct rotary cutting and punching on a press-fit pipe body. And the waste ejection mechanism is arranged to be a non-moving part fixed to the multi-degree-of-freedom moving positioning mechanism, and when the drill bit returns to the preset height, the waste ejection mechanism is automatically inserted into the drill cavity to eject waste. According to the punching method, press fit positioning, multi-hole synchronous rotary cutting and mechanical linkage chip removal are achieved based on the device, the problems that traditional punching burrs are many, and the die bonding strength is low are solved, high-precision and deformation-free punching of the integrated flat pipe is achieved, and the hole wall quality and the production efficiency are remarkably improved.

The present invention relates to the field of geological sample preparation technology, specifically a special coring device for hard broken formations in geothermal drilling, comprising a counterweight support, and further comprising: a rotating drill sample structure connected to the counterweight support, the rotating drill sample structure comprising a rotating lifting drive unit, a limited rotation drive unit installed on the rotating lifting drive unit, the limited rotation drive unit connected to a casing, four sets of buckle frames fixedly connected to the outer wall of the casing, a core drill bit fixedly installed at the lower end of the casing, and four sets of pneumatic filling parts installed in the casing; and a power-assisted separation unit connected to the rotating lifting drive unit. The present invention uses the cooperation of the rotating drill sample structure and the power-assisted separation unit to fix the core sample in a broken and loose state by adding transparent epoxy resin glue while drilling the core sample, thereby avoiding complete collapse and mixing of the core sample during removal and transportation, which is beneficial to the subsequent observation and analysis of the core sample and reduces the difficulty of subsequent core sample analysis.

The invention relates to a control method of a concrete core drilling machine, which comprises the following steps of: firstly collecting and inputting drill specifications, concrete material characteristics and environmental parameters, matching similar working conditions from a historical database on the basis of the drill specifications, the concrete material characteristics and the environmental parameters, and calculating an early warning value which fits the current actual condition. In the drilling operation, the system collects torque, temperature, vibration and other multi-dimensional process data in real time, and the data are compared with an early warning value after being subjected to filtering processing. And when any data continuously exceeds the threshold value, corresponding early warning is triggered. And the system calls a fuzzy control rule table to make a decision according to the early warning type and degree, and generates and executes accurate control instructions such as adjustment of the rotating speed, the feeding speed or the cooling water flow. Therefore, it is ensured that the drilling process always operates in a safe and efficient state in a self-adaptive mode.

The utility model relates to a vertical hole grinding drill for replacing large-aperture coring in an obstacle breaking area of an underground diaphragm wall, and solves the problems that the underground diaphragm wall is of a high-strength reinforced concrete structure, the drilling diameter is large, the drilling depth is large, and a traditional coring drill bit is insufficient in transmission torque in the process of drilling a construction hole in the underground diaphragm wall. The device comprises a drill bit, a drill rod is connected to the upper portion of the drill bit, the drill bit comprises a connecting section, a sleeve section and a grinding section from top to bottom, a grinding disc is arranged at the bottom of the grinding section, annular teeth are arranged on the circumference of the bottom face of the grinding disc, a plurality of grinding heads are distributed in the middle of the bottom face of the grinding disc, and water injection holes are formed in the positions, at gaps of the grinding heads, of the bottom face of the grinding disc. And an overflow slurry discharging channel is formed between the outer wall of the drill bit and the drill hole. The grinding head is arranged on the grinding disc on the bottom surface of the drill bit and is matched with an annular tooth structure of an original coring sleeve to grind the bottom surface of a drill hole and slowly push the drill hole, so that the drilling construction requirements of large-depth and high-strength materials are met.

The present invention provides a core drilling device that prevents the core generated when drilling a through hole in an object from falling, and that can properly remove the chips generated when drilling the through hole. [Solution] The dry-type core drill device 1 includes a dust collector 9 and a core bit 2. The core drill device 1 is equipped with a fixing device that can be fixed to the upper surface of a concrete floor CF. The core bit 2 includes a cylindrical core bit body portion 11, a top plate portion 12 extending radially inward from the base end side of the core bit body portion 11, a through hole 12a formed through the top plate portion 12, and a catch lever 21 supported by the top plate portion 12 when inserted through the through hole 12a. The catch lever 21 is configured to be switchable between a first position in which it cannot engage with the fixing device 31 and a second position in which it can engage with the fixing device 31.

The invention discloses a wire-line coring drilling tool with a vibration rotating anti-blocking structure and a using method, the vibration rotating anti-blocking structure adopts the design of an overflow valve, a filter screen, a rotating tail wing and an overflow valve seat, and the filter screen is arranged before slurry enters the drilling tool, so that rock debris and solid particles carried by the slurry are effectively intercepted; the particles are prevented from being attached and accumulated on the outer surface of the filter screen to block the interior of the drilling tool; a rotating tail wing is innovatively and additionally arranged at the tail of the overflow valve, and a wavy structure is designed on the contact surface of the overflow valve and the valve seat; when slurry flows through, the overflow valve is driven to generate rotary vibration, then the filter screen is driven to act synchronously, centrifugal force is generated through rotation of the filter screen, and solid particles attached to the filter screen can be rapidly stripped under the combined action of vibration of the filter screen and continuous slurry scouring. By means of the design, flowing smoothness of slurry in the drilling tool is effectively guaranteed, the amount of rock debris and solid particles entering the drilling tool is obviously reduced, and therefore the service life of the drilling tool is prolonged.

This invention provides a telescopic millimeter-wave co-operated rock-breaking and coring drill bit and method based on pneumatic throttling drive, relating to rock-breaking technology. The drill bit includes: an annular cavity on the sidewall of the drill bit housing, with multiple through-hole waveguide windows at the bottom of the annular cavity; an annular piston, vertically slidable on the upper part of the annular cavity, with multiple throttling holes on the annular piston; a connecting sleeve, vertically slidable within the annular cavity and connected to the lower end of the annular piston, forming a movable air chamber between the connecting sleeve and the annular piston, with the throttling holes communicating with the movable air chamber; a waveguide disk, connected to the connecting sleeve at the upper part and with multiple waveguides at the lower end, each waveguide being movably inserted into a waveguide window; and an elastic element connecting the waveguide disk and the bottom of the annular cavity. The beneficial effects of this invention are: avoiding direct mechanical collision between the waveguide device and the rock, helping to reduce the risks of exposed and easily damaged waveguide end faces and jamming during downhole operations in existing technologies.

The invention relates to the technical field of rock core spectral analysis, in particular to a method, a device and equipment for detecting the original oil content of a rock core drilled by oil-based drilling fluid, and the method comprises the following steps: firstly, based on local waveform similarity of a rock core and a drilling fluid spectrum, accurately quantifying a wavelength-level oil-based interference degree and determining a fusion weight; constructing a drilling fluid fusion spectrum sequence reflecting the current rock core pollution characteristic, then finely correcting the rock core spectrum, and detecting the original oil content of the rock core according to an obtained corrected spectrum curve and a pre-constructed spectrum peak area-crude oil component volume percentage content relation equation; according to the method, the heterogeneity of the drilling fluid and the wavelength interference difference are fully considered, accurate denoising is implemented by constructing the self-adaptive background spectrum, the problem of excessive signal removal or residual caused by a traditional global difference method is effectively avoided, the corrected spectrum curve after correction can restore the original characteristics of the rock core more truly, and the accuracy of the rock core is improved. The accuracy of detecting the original oil content of the polluted rock core is obviously improved.

The invention belongs to the technical field of drilling and coring of road surface coring machines, and discloses an anti-pollution device of a road surface coring machine, the anti-pollution device comprises a splash-proof cylinder and a waste water collector, the splash-proof cylinder and the waste water collector are communicated through a drain pipe; a base is arranged at the bottom of the splash-proof barrel, a movable guide rail is arranged in the center of the middle of the splash-proof barrel, and the coring machine is arranged in the movable guide rail in a sliding mode. The coring machine can slide up and down along the moving track, when the coring machine slides downwards, a coring drill of the coring machine drills and cores on the road surface, cooling lubricating water used in the drilling process and chippings generated by drilling are thrown out by the rotating coring drill, and the chippings enter the waste water collector through the drainage pipe after being collected by the inner wall of the splash-proof barrel. The device has the beneficial effects that the working condition of splashing of waste water and chippings is effectively improved, the subsequent manual cleaning link is reduced, and the working procedure and cost are saved.

The application discloses a polar drilling hole wall directional coring drill, which comprises a shell, an upper hot melting drill bit, a reverse torsion mechanism, a cable chamber, a control system, a hole positioning mechanism, a supporting mechanism, a reaming mechanism and a coring mechanism, wherein the upper hot melting drill bit is assembled at the top of the shell, the reverse torsion mechanism, the cable chamber, the control system, the hole positioning mechanism, the supporting mechanism, the reaming mechanism and the coring mechanism are sequentially assembled in the shell from top to bottom, and the control system is connected with the upper hot melting drill bit, the reverse torsion mechanism, the hole positioning mechanism, the supporting mechanism, the reaming mechanism and the coring mechanism respectively. The application has the advantages that the coring direction can be accurately controlled, the demand of polar scientific research can be met, the drill is provided with the reaming mechanism, the auxiliary time is greatly shortened, the ice core tube can be telescoped to store the ice core in real time, the loss of the ice core is avoided, the drill adopts the modular design, the structure is simple and compact, the burden of polar logistics guarantee is reduced, and the drill is suitable for coring drilling in a harsh environment.

To provide a drill cover and core drill unit that improve safety and suppress a decrease in work efficiency. [Solution] The drill cover 20 comprises a cylindrical support portion 21 that is attached to the drill head 2a, and a cylindrical cover portion 22 that is movably supported on the support portion 21 along the axial direction of the support portion 21. When the cover portion 22 is overlapping the support portion 21, it exposes the connecting portion 5. When the cover portion 22 is pulled out from the support portion 21 toward the opposite side of the drill head 2a, it covers the radially outer side of the connecting portion 5.

The invention relates to the technical field of sampling, and particularly discloses an asphalt laid road sampling investigation device and a using method thereof.The asphalt laid road sampling investigation device comprises a frame and a core drill bit, two parallel connecting beams are fixedly connected between the frame, L-shaped check blocks are rotationally connected to the opposite faces of one sides of the two connecting beams, and stand columns are fixedly installed in the middles of the connecting beams; rotating arms are rotationally connected to the opposite faces of the tops of the two stand columns, the tail ends of the two rotating arms are rotationally connected with an island platform, the middle of the island platform is slidably connected with a sliding cylinder with an opening in the top end through a guiding block, a cross is fixedly connected to the opening in the top end of the sliding cylinder, and the bottom end of the sliding cylinder penetrates out of the bottom end of the island platform and is fixedly connected with a connecting cylinder. The bottom of the connecting cylinder is rotationally connected with a core drill. The ball head sprays cooling water when the rock core drill drills and samples, and in the blanking process, the ball head pushes an asphalt block sample to descend to be separated from the rock core drill, so that the sampling convenience and the sampling efficiency are positively improved.

The invention relates to a method for releasing a self-tightening insert tool (28) in a working direction (O) of a tool spindle (30) of a hand-held power tool (12), comprising at least the following steps (78, 82, 84): securing the insert tool (28) against rotation with a holding tool (38) when the tool spindle (30) is stationary, starting the tool spindle (30) in the opposite direction of working rotation (O), and stopping the tool spindle (30) after a defined number (N) of revolutions. The invention further relates to a system comprising a hand-held power tool (12), in particular a diamond core drill (10), an insert tool (38), in particular a core drill (70), and a holding tool (38), in particular a wrench (40), for carrying out the method.

The invention relates to the technical field of asphalt ground sampling, and discloses asphalt ground construction sampling equipment which comprises a rack, a supporting plate capable of vertically moving is arranged on the rack, a first servo motor is fixed to the supporting plate, a coring drill bit is fixed to a motor shaft of the first servo motor, and a coring head is fixed to the coring drill bit. A movable pushing piece is arranged in the coring drill bit, a plurality of circular convex blocks which are circumferentially distributed at equal intervals are fixed to the pushing piece, an L-shaped abutting frame is slidably connected to the supporting plate, a movable cleaning base is arranged on the rack, a scraping plate is arranged on the cleaning base, and a hollow rod is fixed to the scraping plate; the asphalt core sample is automatically separated from the coring drill bit, blockage and residues are reduced, the discharging speed is increased, the contact area of the pushing piece and the asphalt core sample can be reduced through the multiple round protruding blocks on the pushing piece, and therefore the adhesion amount of asphalt is reduced, the sampling amount is guaranteed, and the influence on the inspection result is avoided.

The invention provides a multifunctional soil sample microscopic sampling instrument and a soil sample manufacturing method, and the multifunctional soil sample microscopic sampling instrument comprises a base which is provided with a stand column and an operation table; a cross beam is arranged on the stand column; a hollow drill is arranged at the tail end of the cross beam; the hollow drill is used for drilling a soil sample; a clamping plate and a motor are arranged on the operation table. The clamping plate is used for clamping a soil sample; the pushing rod is used for pushing a soil column in the hollow drill upwards; the motor is connected with the blade; the blade is used for cutting the soil column; the operating platform is also provided with an infrared light sensing system; the infrared light sensing system comprises an infrared emitter and a display screen. According to the invention, high-precision, standardized and automatic preparation of the soil sample can be realized, and the sample requirements of various analysis methods such as scanning electron microscope (SEM), X-ray diffraction analysis (XRD) and microscopic computed tomography (mu-CT) can be met.

The utility model provides a natural gas hydrate freezing sampling device, which relates to the technical field of freezing coring drilling tools and is arranged in a drill pipe, a drill bit is arranged at the bottom of the drill pipe, and the natural gas hydrate freezing sampling device comprises a salvage spearhead, an elastic clamping mechanism, a single-acting joint and a freezing pressure-maintaining sampling assembly which are sequentially connected from top to bottom; the freezing and pressure-maintaining sampling assembly comprises a pressure-maintaining bin, a cold source storage chamber, a core barrel, a freezing catalyst storage box and a connecting cover pipe, and drilling fluid in the core barrel and the pressure-maintaining bin is frozen at the same time, so that a core sample is in a low-temperature and pressure-maintaining environment, and the core sample can be kept in an original state; after freezing is finished, the whole freezing and pressure-maintaining sampling assembly is lifted up, and after the core barrel is taken out, the core sample is independently stored in a heat-preservation and pressure-maintaining manner. The problem that a traditional freezing sampling drilling tool is not ideal in sampling effect in a high-temperature hole bottom environment is solved.

The application discloses an unstable deep borehole while-drilling type ground stress testing device and testing method, which comprises a pressurized water injection device, a high-pressure drill rod in communication with the pressurized water injection device, a rope core drill rod sleeved outside the high-pressure drill rod, a channel switching valve comprising a valve body, a water inlet arranged on the valve body, a first water outlet channel in selective communication with the water inlet, and a second water outlet channel, wherein the other end of the high-pressure drill rod is in communication with the water inlet, one end of the rope core drill rod is fixedly connected with the valve body, and the other end is fixed to the ground during the test, and the testing device comprises, in sequence, an upper packer, a center fracturing section, and a lower packer, the first water outlet channel is in communication with the upper packer and the lower packer in sequence, and the second water outlet channel is in communication with the center fracturing section; and a geological drill bit is used to remove obstacles when passing through unstable strata. The application not only can prevent the backflow of sewage in the borehole into the channel switching valve and the inner cavity of the packer, but also can pass through the unstable deep borehole to perform stress testing.