206 results about "Drill cuttings" patented technology

The invention discloses a drilling, deslagging, charging and blocking integrated device, which belongs to the technical field of tunnel engineering and open-air engineering blasting equipment, and comprises a mobile vehicle body, a multi-link structure, a drilling and deslagging device, an explosive filling device and a stemming blocking device. The drilling and deslagging device is used for drilling and discharging drilling cuttings; and the explosive filling device independent track is arranged above the drilling machine beam track in parallel and is used for accurately conveying detonators and emulsion explosives into holes. After drilling is completed, the explosive filling device moves downwards in parallel to be aligned with the hole site for charging; after charging, the device moves upwards to drive the stemming plugging device to reach an orifice, and drilling cuttings discharged by drilling are directly used as stemming raw materials for automatic compaction and plugging. The problems that in the traditional blasting construction process, equipment is frequently switched, the manual operation efficiency is low, high-risk link manual operation needs to be conducted, and stemming raw materials need to be prepared independently are solved, automatic continuous operation of the whole process of drilling, charging and plugging is achieved, and the construction efficiency and intrinsic safety are remarkably improved.

The invention belongs to the technical field of excitation detection, and provides a movable seismic source system carried by a deep mine heading machine and a positioning excitation detection method, which are characterized in that the excitation time delay of each seismic source unit in an array is accurately controlled by utilizing a controllable seismic source, so that the seismic source units form synchronous superposition in a specific direction, and the detection of an active source is realized; in the aspect of passive source detection, vibration generated when the jumbolter cuts surrounding rock is used as a vibration source, a pilot sensor installed near an anchor rod drill is used for recording an original vibration signal, namely cutting vibration, when the jumbolter works, and signals collected when the jumbolter works and signals collected by the pilot sensor are subjected to cross-correlation processing, so that the original vibration signal is obtained. And reconstructing a virtual seismic source, and then carrying out data processing and passive source imaging. And the active source detection result and the passive source detection result are combined to interpret the unfavorable geologic body, so that the detection of the position is realized, and the geological interpretation of the whole space of the mine can be realized.

The invention relates to a method (50) comprising the steps of: - using a sensor to acquire (110) an image of the sample composed of grains; - applying (120), to the image (1), a convolutional neural network in order to obtain a contour map (C) associating, with each pixel of the image, a value equal to one unit when that pixel belongs to a contour of a grain and otherwise equal to zero; - applying (130), to the contour map (C), a segmentation algorithm in order to obtain a segmented image (S) comprising a plurality of regions, one region being separated from a neighbouring region by a contour having a thickness of a single pixel; and - applying (140), to the segmented image (S), one or more geometric processing operations in order to calculate physical quantities for each grain so as to characterise the lithology of the sample (3).

An automatic drilling machine for brake pad steel backing includes a drilling device, a base, a position adjustment device, a steel backing support device, and a material conveying device. The drilling device includes a central shaft, a support frame, a moving frame, a guide cylinder, and a linkage mechanism. The support frame is moved by the position adjustment device. The central shaft is slidably and rotatably mounted on the support frame, and a drill bit is fixedly mounted at the front end of the central shaft. The moving frame is slidably and rotatably mounted on the support frame, and a plurality of flip plates are rotatably and elastically mounted at the front end of the moving frame. A cleaning brush is fixedly mounted on the inner side of the flip plate, and a guide groove connecting the inner and outer sides is provided. The guide cylinder is slidably and elastically mounted on the support frame through a guide cylinder mounting frame, and an inlet communicating with a coolant pipe is provided on the guide cylinder, and a guide groove is fixedly mounted thereon. A cutting blade mounting ring is rotatably mounted inside the guide cylinder, and a plurality of cutting blades are fixedly mounted on the cutting blade mounting ring. This invention can effectively guide the flow direction of the coolant and cut long drill chips into small segments during drilling.

In a hand-held power tool, in particular a drill, comprising a housing (110) and at least one drive motor arranged in the housing (110) for driving an output shaft (140), which has a tool holder (142) for an insert tool, wherein the output shaft (140) has a tubular transport section (144) for transporting away dust and / or drilling particles occurring during machining, and wherein, in its end region (299) close to the drive motor (120), the tubular transport section (144) is formed for discharging dust and / or drilling particles away from the output shaft (140). The output shaft (140) has, in the end region (299) of the tubular transport section (144) in a circumferential direction (202), a first plurality of recesses (213) and a second plurality of recesses (214) for discharging the dust and / or drilling particles away from the tubular transport section (144), and the first and second plurality of recesses (213, 214) are spaced apart from one another in the longitudinal direction (201) of the output shaft (140).

The invention provides a kind of pile foundation construction platform.The pile foundation construction platform includes soil layer;Platform main body, the inside of the soil layer is embedded the casing, and the surface of the soil layer pours the concrete layer, the surface of the concrete layer is equipped with a plurality of circular table shape the groove;Cleaning mechanism;The top end of the fixed cylinder is installed for driving the fixed shaft rotation motor, the side wall of the fixed shaft is installed for excluding sewage turbine, for pushing sewage to rise the fan blade, for crushing drill cuttings the crushing rod and for preventing drill cuttings accumulation the rotating plate;Adjusting mechanism, the support net and the side wall of the fixed cylinder are slidingly connected cylindrical scraper;Reinforcing mechanism, the reinforcing mechanism is rotatably connected the second fixed plate;Driving mechanism;Enclosure mechanism.The pile foundation construction platform provided by the present application has the advantages of effectively preventing pipeline blockage, quickly discharging mud, increasing the stability of soil layer around the borehole.

Systems, methods, and apparatus for producing wellbore fluids using drill cuttings, geopolymers, and / or mine tailings, and compositions relating to the same are disclosed. The drill cuttings, geopolymers, and / or mine tailings may be used to create appropriate wellbore fluids to be used in wellbore fluid supply systems, such as spacer fluids, lead barrier fluids, tail barrier fluids. In one embodiment, the wellbore fluids result in one or more substantially impermeable barrier sheaths within the wellbore, which barrier sheaths may be cementitious or non-cementitious.

The present application relates to geotechnical engineering technical field, specifically to a kind of slope stabilizing mechanism and its construction technology, wherein, the slope stabilizing mechanism includes moving assembly, moving assembly includes expansion part and drive structure.Expansion part has the contraction state along the radial contraction of anchor rod and the expansion state along the radial expansion of anchor rod.Drive structure drives expansion part to move on anchor rod axially, and control expansion part switches between contraction state and expansion state.When expansion part is in expansion state and moves along anchor rod axially, the hole wall of drilling can be continuously wiped, the low-intensity, low-permeability mud skin structure formed on the surface of drilling hole wall due to drilling construction is broken, the loose drill cuttings and collapse on the surface of hole wall are removed, so that the surface roughness of drilling hole wall is improved, and then the interfacial bond strength between drilling hole wall and grouting body is enhanced, to avoid mud skin, drill cuttings and other impurities to hinder the effective combination of grouting body and hole wall.

Systems, methods, and apparatus for producing coated drill cuttings and for producing wellbore fluids using coated drill cuttings, and compositions relating to the same are disclosed. The coated drill cuttings may be used to create appropriate wellbore fluids to be used in wellbore fluid supply systems, such as spacer fluids, lead barrier fluids, tail barrier fluids. In one embodiment, the wellbore fluids result in one or more substantially impermeable barrier sheaths within the wellbore, which barrier sheaths may be cementitious or non-cementitious.

A method for evaluating a multiphase fluid includes adding the multiphase fluid to an annular volume of a test apparatus, the test apparatus including an inner cylinder deployed in an outer cylinder thereby defining the annular volume. The inner and outer cylinders are configured to rotate independently with respect to one another. The method further includes rotating at least one of the inner and outer cylinders after adding the multiphase fluid to the annular volume to simulate desired flow conditions in the annular volume. The method still further includes removing the multiphase fluid from the annular volume after rotating and evaluating at least one physical property of the removed multiphase fluid.

The utility model discloses a prevent drilling machine drill chip splashing device, including drilling machine, drill, drilling machine platform, platform clamp, shield and steel finished product sample, and the one end of drill is connected with drilling machine, and drilling machine platform is installed on drilling machine, and platform clamp sets up in drilling machine platform, and shield sets up on the upper surface of drilling machine platform, and is equipped with a drill hole on the top of shield, and shield is composed of first cover body and second cover body, and steel finished product sample is fixed in shield through platform clamp, and the other end of drill passes through drill hole and contacts with steel finished product sample surface downward. First cover body is composed of shield top plate and four peripheral edge boards, and the upper end of four peripheral edge boards is connected with the lower end of shield top plate, and one end of shield top plate is equipped with semicircular through -hole, and second cover body is set up reversely same with first cover body, and first cover body and second cover body are combined and form shield. Prevent drill chip splashing, can effectively collect drill chip, ensure that operating personnel and environmental safety, can observe the situation in shield simultaneously.

The invention discloses a double-pipe drilling double-power drilling machine system, which belongs to the technical field of drilling rods, and comprises an outer drilling rod, a spiral inner drilling rod is rotatably arranged in the outer drilling rod, the outer drilling rod is in threaded connection with a pipe drill bit, a PDC drill bit is arranged at one end, far away from the outer drilling rod, of the pipe drill bit, and a plurality of liquid holes are formed in the PDC drill bit; a composite slice drill bit is arranged on the periphery of the end, away from the outer drill rod, of the pipe drill bit, and a deslagging channel is formed between the composite slice drill bit and the PDC drill bit. And a central channel communicated with the liquid hole is formed in the central position of the spiral inner drill rod. According to the double-pipe drilling and double-power drilling machine system, scour and damage of drilling cuttings to a drilling hole wall are fundamentally eradicated, the drilling cuttings carrying efficiency of a medium is greatly improved through the spiral stirring and vortex effect generated by reverse rotation of the inner drill pipe and the outer drill pipe, the stubborn problem that a slag discharging channel is blocked is effectively solved, and the service life of the drilling cuttings is prolonged. And continuous and efficient operation under complex and deep hole working conditions is ensured.

The application provides a kind of ore grade distribution real-time detection method, system and equipment, it is related to mining technical field, method mainly includes: based on the operation map of mining area, centralized control center determines blast design hole coordinate;Automatic drill travels to a hole position and is in position;Automatic drill carries out drilling operation, obtains drill cuttings and records operation parameters in real time;Automatic detection platform is sampled to drill cuttings by sample collection device continuously by continuous flow;Through drying, tabletting, analysis processing, ore grade content and internal profile structure diagram, and match corresponding hole data;Based on ore grade content, internal profile structure diagram and hole data, single-hole model characteristic curve is obtained by fusion;The above operation is carried out to all hole positions;The average value of the single-hole model characteristic curve of adjacent hole positions is calculated, and curve fitting is carried out to obtain the ore grade spatial distribution imaging map.The scheme can provide intuitive guidance for ore dressing of mine, and can greatly improve the mining efficiency and quality.

The application provides an oil-containing drilling cuttings reinjection fluid and a preparation method and application thereof, which contains, based on the total weight of water in the base fluid being 100%, 0.2-0.3wt% of a suspending agent, 0.15-0.25wt% of a low-viscosity polyanionic cellulose, 0-0.25wt% of sodium carboxymethyl cellulose, 0-0.2wt% of hectorite, 0-0.2wt% of a zwitterionic polymer, 20-25wt% of oil-containing drilling cuttings and the balance of the base fluid; in the oil-containing drilling cuttings reinjection fluid, the contents of the three components of sodium carboxymethyl cellulose, hectorite and the zwitterionic polymer are not simultaneously 0, and the total content of the treating agent is less than 1wt%. The application realizes the target of reducing the total amount of the treating agent through the complementary advantages of the performance of different treating agents, and on the basis of making the rheological performance, the suspension stability and the filtration loss performance of the oil-containing drilling cuttings reinjection fluid system meet the requirements, the high-temperature resistance and the pollution resistance of the oil-containing drilling cuttings reinjection fluid system are also improved.

This invention provides a real-time monitoring and early warning system and method for surrounding rock stress during drilling, belonging to the field of coal mine safety monitoring technology. The system includes an information acquisition module, a drilling information processing module, a video processing module, a microseismic information processing module, and a comprehensive information processing and early warning module. Through pressure sensors, displacement sensors, cameras, and microseismic sensors, it collects feed pressure, rotation pressure, cylinder displacement, drill cuttings images, and microseismic signals in real time. It performs filtering, noise reduction, and feature extraction on various types of data. A weighted average algorithm is used to fuse multi-source data to construct a fused dataset. A surrounding rock stress monitoring model is built based on an LSTM deep recurrent neural network to achieve real-time analysis and hazard level classification and early warning of surrounding rock stress. This invention realizes multi-source information fusion monitoring of surrounding rock stress state during drilling, effectively identifying strong, medium, and weak stress hazards, and improving the safety and reliability of drilling operations and early warning.

This invention discloses a rapid drilling device and method for the floor of coal mine roadways. It includes a drilling rig, drill rods, and a drill bit. The drill rods consist of a transition drill rod and a circular drill rod. A water channel is provided through the transition drill rod, the circular drill rod, and the drill bit at a certain thickness. A water extraction pipe is provided inside the transition drill rod and the circular drill rod. A water extraction pipe and a water supply pipe are sleeved through the center of the drill arm. The drill arm's water extraction pipe communicates with the drill rod's water extraction pipe and the drill bit's inner cavity. The drilling rig's water supply pipe communicates with the drill rod's water channel. During drilling, water injected from the water supply pipe enters the bottom of the hole through the water channel. The water at the bottom of the hole, carrying drill cuttings, is extracted sequentially through the hollow drill bit, the drill rod's water extraction pipe, and the drill arm's water extraction pipe under external negative pressure. This allows drilling mud to be continuously extracted from the center of the drill rod during drilling, eliminating the need for special drill bit removal and cuttings disposal, shortening the drilling progress, greatly improving drilling efficiency, ensuring the floor pressure relief effect, and providing technical support for safe production on site.

The invention relates to the technical field of oil and gas reservoir well completion, in particular to a gas storage sand production control method and device. The method comprises the following steps: in a gas storage well completion process, replacing drilling cuttings carried during backflushing by using a dissolvable sand consolidation liquid medicine, and plugging an annulus by using a sleeve and annulus plugging technology; and under the conditions that the gas storage is in a gas storage operation state and the operation pressure of the gas storage reaches a packer under-pressure operation pressure threshold value, the gas storage is controlled to perform well opening and gas discharging, and an oil pipe gas layer is sealed through the packer to achieve a layered injection and production operation system. By the adoption of the scheme, the sand production prevention and control facility of the gas storage can be completed during well completion.

The present application provides a kind of inner slag discharging device and its slag discharging method, it includes high wear-resistant obturator, drill bit drill rod device, venturi water and drill slag dry-wet separator, the drill bit drill rod device is located in high wear-resistant obturator, drill slag dry-wet separator is connected with drill bit drill rod device by venturi water.The flow direction of drill slag can be changed by changing the running direction of slag discharging medium, so as to reduce the scouring, soaking and friction of slag discharging medium and drill slag on the hole wall, which is beneficial to the formation of drilling hole;It can achieve the purpose of point coring by achieving "falling and discharging simultaneously";Drilling cuttings can be well collected, which is beneficial to the civilized production of construction site and prevents dirtiness and disorder;If inert gas is used for slag discharging during construction, it can also achieve the purpose of inhibiting spontaneous combustion of coal seam.Through the above technical scheme analysis, the device is theoretically feasible and the operation is reliable, which provides good drilling quality for casing, greatly improves the success rate of drilling and casing and the extraction effect.

Methods and systems are provided that determine at least one fluid parameter for a drilling fluid and a particular drilling operation, wherein the at least one fluid parameter is selected from the group consisting of: i) a first fluid parameter that relates to shear forces that break apart components of the drilling fluid during the particular drilling operation, ii) a second fluid parameter that characterizes mixing of drill cuttings with the drilling fluid during the particular drilling operation, and iii) third and fourth fluid parameters that characterize normal stress in the drilling fluid during the drilling operation. The methods and systems can evaluate one or more of these fluid parameters to determine a drilling fluid formulation that optimizes the drilling fluid for effective transport of drill cuttings. Methods and systems are also provided that evaluate one or more of these fluid parameters to determine operating parameters that optimize a drilling operation for effective transport of drill cuttings using the drilling fluid.

The invention discloses a magnetic drill press stable in machining, and belongs to the technical field of magnetic drill presses. When an existing magnetic drill is positioned, drilling cuttings are easily adhered to the bottom surface of a magnetic seat, so that the bottom is uneven, and the adsorption is unstable. The guiding device and the driving structure are arranged in the annular magnetic attraction base, so that controllable disassembly and rotary adjustment of the magnetic attraction base are achieved; the magnetic attraction base is formed by splicing a plurality of magnetic attraction units through connecting units, an elastic ring on the guiding device is flattened, scraped and swept when the base is disassembled and rotates, drilling cuttings in an annular area are automatically collected, chippings and a magnetic attraction face are isolated, and it is ensured that adsorption is stable after the base is reset. And the drilling frames can synchronously accompany, and drilling feeding and positioning are not affected. The problem of adsorption failure caused by scrap accumulation of a traditional magnetic drill press is solved, and the magnetic drill press has the advantages of being convenient to position, stable in continuous machining and small in maintenance amount and is suitable for multi-hole-site efficient drilling operation on a steel structure site.

The present application provides a spiral conveyor automatic pushing device and a drill cutting conveying device, the drill cutting conveying device comprises a plurality of centrifuges arranged above the tank surface of a mud tank; a spiral conveyor arranged on the tank surface of the mud tank, the spiral conveyor is provided with a spiral conveyor automatic pushing device, the spiral conveyor automatic pushing device comprises a plurality of guide rails arranged on the tank surface of the mud tank, both ends of the guide rails correspond to the working position and the disassembly and assembly position of the spiral conveyor respectively; and a plurality of automatic lifting and walking devices arranged on both sides of the spiral conveyor, the automatic lifting and walking devices are configured to be capable of extending downwards and connected to the guide rails, and continue to extend to lift the spiral conveyor and separate from the tank surface of the mud tank; wherein the automatic lifting and walking devices walk on the guide rails when the spiral conveyor moves; the spiral conveyor is in the working position when working, and the spiral conveyor is in the disassembly and assembly position when disassembling or maintaining.

The application discloses a kind of slotting cutter head telescopic type rock drill drilling and cutting integrated device, including drill rod assembly body, drill rod assembly body is sequentially provided with connecting sleeve assembly, advance limiting assembly, telescopic slotting cutter head assembly, retreat limiting assembly and air drill bit, telescopic slotting cutter head assembly includes sleeve and slotting cutter, two notches are symmetrically set on the two sides of sleeve;Slotting cutter includes cutter head and connecting plate, connecting plate and cutter head are integrated structure, connecting plate is located in the inside of sleeve, the other end of connecting plate extends to retreat limiting assembly and is penetrated sleeve, the side of connecting plate close to retreat limiting assembly is equipped with limit inclined plane one.The application adopts the above-mentioned structure of a kind of slotting cutter head telescopic type rock drill drilling and cutting integrated device, solves the problem of time-consuming and low efficiency of recovery equipment process after completing drilling and slotting process in the tunnel blasting excavation construction in the prior art, provides great convenience for blasting excavation work.

This invention discloses a method and device for early warning and precise energy release in dynamic pressure roadways during mine mining, belonging to the field of mine energy early warning technology. This invention collects acoustic emission monitoring data, pulse signal monitoring data, CT scan data, microseismic monitoring data, stress monitoring data, and drill cuttings volume monitoring data, normalizes them to obtain early warning indicators, and performs nonlinear processing and dynamic weighting to obtain a comprehensive early warning indicator. Early warning levels are divided according to the comprehensive early warning indicator to achieve graded early warning, and pressure relief schemes are preset for each level of early warning, forming an early warning-response closed loop. Compared with a single early warning system, this invention integrates multiple monitoring methods, comprehensively considering energy release (acoustic emission, microseismic), electromagnetic response (pulse), stress state (stress), structural integrity (CT), and surrounding rock damage (drill cuttings) multi-dimensional indicators, overcoming the limitations of single indicators and reducing the false alarm rate caused by the failure or interference of a single monitoring method.

The utility model relates to the field of self-drilling anchor rods, in particular to a self-drilling anchor rod which comprises an anchor rod body and further comprises an installation base plate, the installation base plate is connected with the anchor rod body in a sleeved mode, a connecting sleeve is installed on the surface of the anchor rod body, a drill bit is arranged at the bottom of the anchor rod body, drilling teeth are arranged at the lower end of the drill bit, and spiral blades are arranged on the surface of the drill bit. A nut is installed at the upper end of the surface of the anchor rod body, a stop-grouting plug is arranged on the surface of the anchor rod body and located below the nut, and a stop expansion piece is arranged on the surface of the connecting sleeve. During rotation of the drill bit, through synchronous rotation of the spiral blades, chip removal is facilitated, accumulation of drilling chips is reduced, the flatness of a drill hole is guaranteed, when slurry is injected, rapid discharging of the drilling chips and the anchoring effect are guaranteed, meanwhile, the connecting sleeve is positioned through the stop expansion piece, deviation of the drill rod is avoided, the flatness of the drill rod is guaranteed, and the service life of the drill rod is prolonged. And the stopping expansion piece is inserted into slurry to form limiting, so that the anchoring effect is improved.

The invention provides offshore wind power rock-socketed high-clay slurry and preparation and application thereof. The offshore wind power rock-socketed high-clay slurry is prepared by taking high-viscosity undisturbed soil with Ip greater than 25 as a framework, doping 0.08% of CMC-Na and 0.2% of Na2CO3, and mixing drilling cuttings with the density of 1.18-1.22 g / cm < 3 >, the funnel viscosity of 50-60 s, high dynamic shearing force and suspensible large particle size; the API water loss is less than 8mL / 30min, CMC-Na and clay are subjected to ion exchange to instantly form a compact mud cake on a pore wall, and high-pressure-bearing water is effectively isolated; the high-yield and strong-thixotropic gel can resist liquid level instantaneous pressure loss caused by tides and stormy waves, prevent hole shrinkage and hole collapse and guarantee deep sea hole forming stability and pile forming quality, has the characteristics of low solid phase, low filtration loss, high slag carrying capacity and excellent wall protection, is simple in formula, environment-friendly and economical, and is suitable for offshore wind power rock-socketed construction. The formula is simple, environment-friendly and economical, meets the requirements of offshore wind power rock-socketed construction, and has good popularization value.

In some embodiments, a method for controlling a learning machine used in a drilling operation to drill a well into a subsurface formation includes receiving, via a video stream, an image of debris including cuttings from the drilling operation. The method may further include generating a first mask on the image to identify the cuttings in the debris, generating, via instance segmentation, a second mask for each of the identified cuttings, determining, based on the second masks, one or more properties of each of the cuttings, and associating each of the identified cuttings to a depth interval of the subsurface formation based, at least in part, on the properties of each of the identified cuttings and at least one property of the drilling operation.

The present invention relates to a cuttings collector for obtaining drill cuttings from subterranean wellbores, at least comprising: a) a cuttings collector stem provided with a double helix cutter acting as a conveyor screw having two transport paths, b) an external wall surrounding one of the two transport paths and a lower wall closing said one transport path at the lower end thereof, c) the cuttings collector stem, at the upper end thereof, being provided with a top sleeve having an opening and closing arrangement so that cuttings that are collected can be guided into a desired transport path.

The invention discloses a positive cycle non-linear displacement control method for strong drilling of a sulfur-containing and gas-containing stratum, which belongs to the technical field of displacement control methods and comprises the following steps of: measuring the static liquid level height of a drilling fluid column before a drilling pump is started under the condition of leakage return of a drilled well; measuring the working fluid level height after well drilling pump starting is stable; calculating the liquid column pressure before pump starting according to the static liquid level height of the drilling liquid column; calculating formation pressure after pump starting is stabilized according to the working fluid level height; comparing whether the liquid column pressure before pump starting and the formation pressure after pump starting stabilization are balanced or not; if not, the annulus dynamic liquid level height is adjusted, the annulus liquid column pressure is kept equal to or larger than the formation pressure all the time, and the annulus liquid column pressure is made to stably press the leakage layer; and after the leakage layer is stably pressed, clear water with different discharge capacities is adopted to bring drilled rock debris into the leakage layer under different annular gaps of the drill collar section and the drill rod section. In the process of clear water forced drilling, the height of the annular liquid level above a leakage layer is controlled through positive circulation, so that the annular liquid column pressure is larger than the formation pressure, and an air layer is stably pressed to prevent overflow.

The invention provides a novel closed slurry return and chip removal horizontal directional drilling machine, which consists of an inner and outer double-channel drilling machine main machine, an inner and outer double-channel drilling rod and a novel drill bit, and is characterized in that a power head main shaft of the inner and outer double-channel drilling machine main machine, the inner and outer double-channel drilling rod and a core shaft of the novel drill bit are respectively provided with an inner hole channel and an outer layer channel; a slurry returning and chip discharging opening leading to the inner hole channel is formed in the shaft wall of the core shaft of the novel drill bit, and a slurry jetting opening is formed in the novel drill bit. When the drilling machine works, slurry is injected from the outer layer channel until being ejected from the slurry injection orifice of the novel drill bit, and the ejected slurry and drilling cuttings are mixed to enter the inner hole channel of the mandrel from the slurry return and chip removal opening of the mandrel of the novel drill bit, and return to the inner hole channel of the main machine through the inner hole channel of the double-channel drill rod to be discharged. The full chip removal function in hole forming is achieved, the one-time hole forming capacity of the drilling machine is greatly improved, and therefore the construction period is greatly shortened, the cost and energy consumption are reduced, and the labor intensity and the influence on the environment are reduced.