371 results about "Core drill" patented technology

The invention discloses a drill rod for construction of an integrated stirring forming type cemented soil stiff anchor rod, the drill rod comprises a drill bit part and a hollow drill rod, the drill bit part comprises a shell, an anchor disc fixed in the shell and a spiral blade welded on the shell, and the hollow drill rod is inserted into the shell; the sheath steel pipe is inserted into the hollow drill rod and fixed to the shell, the grouting pipe is inserted into the sheath steel pipe, one end of the rod body is fixed to the anchor disc, and the other end of the rod body extends out of the sheath steel pipe. A first grouting hole is formed in the shell, and a second grouting hole is formed in the sheath steel pipe. The invention further discloses a construction method of the integrated stirring forming type cemented soil stiff anchor rod. When the method is used, the processes of hole forming, anchoring, grouting and the like are integrally formed, the process is simple, the speed is high, and the quality is easy to control; the formed cement-soil pile body is uniform in internal structure and reliable in strength; tension of the anchor rod is uniformly distributed, so that stress concentration can be reduced; and the formed cement soil pile body is high in end strength and good in safety.

The invention provides an indoor crustal stress test device and method based on optical strain measurement, the test device comprises a stress simulation device, the stress simulation device can perform real three-dimensional crustal stress environment simulation on a test rock mass as far as possible; the drilling releasing device is provided with a hollow drill bit used for drilling the optical strain measurer installed in the test rock mass, and the drilling hole and the hollow drill bit are coaxially arranged. Thus, according to the method, pressure is applied to the test rock mass from multiple directions through the multiple hydraulic loading columns, the real three-dimensional crustal stress environment can be more accurately simulated, speckle image changes in the speckle coating can be continuously recorded in real time through the optical strain measurer, and hole wall strain data are obtained; and converting the strain data into stress by applying an elastic theoretical formula, and accurately calculating the stress state of the experimental rock mass.

According to the basic grassland ecological data monitoring and sampling system disclosed by the invention, in the sampling operation, cutting rings can be automatically taken out and stored through rotation of a turntable, rotation of a butt-clamping mechanical claw and lifting of a butt-clamping sliding block, so that an unmanned vehicle can carry a plurality of cutting rings for sampling work, the sampling work efficiency is improved, and the sampling time is shortened. The cutting ring inserting work can be automatically completed through cooperation of the butt-clamping mechanical claw and the pressing head, soil around the cutting ring can be automatically excavated through the hollow drill, the labor intensity of an operator is relieved, the automation level is improved, the butt-clamping mechanical claw can enter an annular groove excavated by the hollow drill, the cutting ring is taken out by clamping the side face of the cutting ring, and the cutting ring inserting efficiency is improved. The cutting ring does not need to be additionally transformed, the universality of the cutting ring is improved, and the sheath is pressed outside the cutting ring before the soil around the cutting ring is dug out, so that the situation that the accuracy of an analysis result is reduced due to soil disturbance in the cutting ring caused by displacement of the cutting ring is avoided.

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 present invention discloses a fully hydraulic power head drill suitable for drilling in loose and broken strata. It includes a chassis assembly, a centering gripper, a pipe ramming machine, a power head, a drill rig guide rail, a fixed pulley block, a support oil cylinder and a feed oil cylinder; the power head is fixedly connected to the feed oil cylinder and is slidably connected to the drill rig guide rail; the drill rig guide rail is installed on the chassis assembly; the fixed pulley block is fixed at the top of the drill rig guide rail to change the direction of the wire rope and form a traction mechanism in cooperation with the winch on the drill rig, and when necessary, pull the power head and the drill pipe string to the starting position; the support oil cylinder and the feed oil cylinder are hinged and fixed on the chassis assembly. The present invention has the advantages of realizing the rotary feed function of an ordinary core drill while realizing impact rotary compound drilling and improving the working efficiency of pipe ramming drilling.

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 invention relates to an ultrasonic vibration anti-core-blocking drilling tool and a drilling method thereof, and belongs to the technical field of drilling engineering.The drilling tool is composed of an outer pipe system, an inner pipe system and an ultrasonic vibration system; ultrasonic vibration is applied to an inner pipe system, core blocking, bridging and adhesion in core drilling in complex stratums such as fracture development, broken stratums and water-sensitive stratums are effectively prevented, moving resistance of the core in the inner wall is greatly reduced, core blocking is prevented, the core recovery rate and the drilling speed are increased, and the core drilling efficiency is improved. The method can adapt to various complex stratums by adjusting ultrasonic vibration parameters, and is wide in stratum adaptability, high in universality and easy and convenient to operate.

The invention discloses an automatic geological rock coring device, which relates to the technical field of geological rock sampling and comprises a coring base part, a plurality of self-adaptive core clamping devices, a telescopic coring drill bit device and an automatic controller based on a chip. According to the automatic coring device for the geological rock, multi-degree-of-freedom movement of a coring tool in space is achieved through the structure of the multiple self-adaptive core clamping devices and the telescopic coring drill bit device. The coring device can flexibly adjust the coring position, meets coring requirements under different stratum conditions, and particularly has remarkable advantages in complex geological structure areas. The self-adaptive core clamping device can carry out self-adaptive clamping according to the size and shape of the rock core, mechanical damage to the rock core is avoided, the integrity of the rock core is improved, and a more reliable sample is provided for subsequent rock physical property testing and geological analysis. Due to the design of the three-stage insertion type clamping jaw part, self-adaptive adjustment can be carried out according to the actual size and shape of a rock core.

The invention belongs to the technical field of dynamic compaction foundations, discloses a dynamic compaction foundation quality detection sampling method, and aims to solve the problem that a core sample is easily damaged when the core sample of the dynamic compaction foundation is obtained by adopting an existing coring bit. The method comprises the following steps: (1) cutting and drilling an outer-layer soil body by using outer-layer cutting teeth on an outer cutting cylinder; (2) inner-layer cutting teeth on an inner cutting cylinder are used for cutting and drilling an inner-layer soil body; (3) synchronously driving a protective cylinder for coating the core sample to move downwards; (4) when the lower end surface of the protective cylinder moves to a designed depth, cutting a soil body below the core sample by using a cutting blade; and (5) taking out the protective cylinder from the inner cutting cylinder, and opening the protective cylinder to obtain a core sample of the dynamic compaction foundation. According to the invention, disturbance to the dynamic compaction foundation core sample can be reduced, and the core sample forming quality is improved.

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 invention discloses a preparation and experiment method of a filled fractured rock sample reflecting moisture migration water-containing conditions, and relates to the technical field of rock mass mechanics experiments, and the preparation and experiment method comprises the following steps: processing a sandstone block material into a cuboid larger than a standard cylindrical sample; the rectangular plate is placed on a drilling machine workbench, the drilling position is marked according to the needed sample position, and a rock core drilling machine is used for preparing a sample; high-pressure water jet equipment is used for cutting a penetrating crack in the middle of the sample, the crack characteristics comprise the inclination angle beta and the length 2a, the crack widths are the same, and control groups of different rock samples are formed; cutting and grinding by using a stone grinding machine to prepare standard cylinder and disc samples; the method comprises the following steps: air-drying and grinding clay taken back from a sampling site, preparing a clay filler according to the natural moisture content of the clay on site, and preparing a clay filling crack sample; the method can provide a basis for understanding a water-rock interaction mechanism and revealing a water-induced related rock mass engineering disaster mechanism.

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.