815 results about "Rock breaking" patented technology

The invention discloses a multi-well linkage drilling parameter multi-level optimization decision-making method and system, and the method comprises the steps: obtaining real-time drilling data in a drilling operation process, so as to determine a first rock breaking parameter; under the condition that the first rock breaking parameter is out of the preset range, the mechanical drilling speed corresponding to the real-time drilling data is predicted according to a preset model; generating a plurality of candidate parameter groups according to the mechanical drilling speed and the drilling constraint condition, and determining a function value corresponding to each candidate parameter group based on a multi-objective optimized objective function; determining a target parameter group in the plurality of candidate parameter groups according to the function value of each candidate parameter group; and target drilling working parameters are determined according to the target parameter set, and the target drilling working parameters serve as current drilling working parameters for drilling operation. According to the scheme, the drilling working parameters are intelligently optimized by using the multi-objective optimization algorithm while complex working conditions are avoided, and the drilling efficiency is comprehensively improved.

The invention belongs to the technical field of pipe jacking machines, and discloses a high-strength rock crushing pipe jacking machine which comprises a machine head and a machine tail, the machine head is rotationally connected with a mounting frame with a cutter head, a partition plate in the machine head is rotationally connected with a shaft sleeve, and the shaft sleeve is rotationally connected with a driving shaft connected with the cutter head. A motor on the partition plate is meshed with a driving shaft through a driving bevel gear and a driven bevel gear II and a driven bevel gear I on a shaft sleeve, so that the driving shaft and the driven bevel gear II and the driven bevel gear I respectively drive a crushing roller II and a crushing roller I to act. The shaft sleeves drive the baffles to slide along the sliding grooves through the tooth grooves, the gears and the connecting rods to be matched with the transfer openings of the partition plates and the diversion groove bodies. An auger conveying pipe connected with the flow guide groove body penetrates through the mounting plates of the machine head and the machine tail and is supported by the machine tail support, and a collecting box on the machine tail base is matched with the auger conveying pipe. According to the pipe jacking machine, cutter head cutting and double crushing roller secondary crushing are combined with baffle control to prolong the crushing time, the rock crushing effect is improved, conveying blockage is avoided, and the pipe jacking machine is suitable for high-strength rock stratum construction.

The invention discloses a soil-rock composite formation hob fracture avoidance method based on FEM-DEM coupling, and relates to the technical field of tunnel and underground engineering, and the method comprises the steps: building a hob cutting model based on a finite element-discrete element coupling method; generating a soil rock calibration parameter according with the input of the hob cutting model; calculating a cutting force curve of hob impact under any working condition by using the hob cutting model, and extracting the maximum value of the cutting force curve as a load peak value; extracting a cutter ring stress peak value corresponding to the moment of the load peak value; and calculating the current comprehensive equivalent stress of the hobbing cutter ring based on the limit stress, comparing the comprehensive equivalent stress with the dynamically matched yield strength threshold, and judging the risk level of the hobbing cutter ring. According to the method, refined simulation of the whole rock breaking process of the hobbing cutter in the soil-rock composite stratum is achieved, the transient impact load peak value and the induced cutter ring limit stress distribution are captured, and the fracture risk identification precision is remarkably improved.

The invention belongs to the technical field of tunnel construction, and discloses an upper-soft lower-hard composite stratum shield hob impact load determination method and system.The method comprises the steps that rock is divided into a plurality of concentric circle areas through a cavity expansion model, the radius of each area is determined, and the relation between the damage states of different positions of rock mass and the distance position of the center of a blade is obtained; the influence of section penetration is introduced, and based on the influence of the damage difference between a vertical crack area and a dense nuclear area in the hob rock breaking process, the damage state of the hob section away from the center of a blade within the range of a hob lower contact area and the damage distribution state of the hob lower hard rock side in the interface vertical crack expansion process are determined; and determining an expression of stress change of the transition section based on a CSM model, and realizing impact load prediction when the shield hob passes through the upper-soft and lower-hard composite stratum in combination with the influence of damage of the lateral shearing region. The damage effect and cavity expansion model theory is introduced for the first time, the compatibility of the prediction model and the actual situation is improved, and the abnormal damage rate of the hob is reduced.

The invention provides a tool applied to the field of petroleum drilling, and particularly relates to an underground non-circular gear intelligent impact tool which comprises a power module, an axial impact module and a circumferential impact module, the power module enables drilling fluid to impact a turbine in a directional mode through a drainage disc, hydraulic energy is converted into mechanical energy, and the mechanical energy is transmitted to the axial impact module. The power is transmitted to the axial impact module and the circumferential impact module, the axial impact module lifts a rack punch hammer to compress a spring through meshing of an incomplete gear and the rack punch hammer, and when the incomplete gear is disengaged from the rack punch hammer, the spring releases energy to generate axial impact downwards. The circumferential impact module is composed of two groups of incomplete gears and racks which are arranged in an up-down 90-degree staggered mode, the rack punch hammer compresses a spring through meshing of the incomplete gears and the rack punch hammer, and the spring is released to generate circumferential impact when the incomplete gears and the rack punch hammer are disengaged. Periodic impact can be achieved, the mechanical rock breaking efficiency is effectively improved, and the stick-slip phenomenon at the drill bit is reduced.

The invention relates to the technical field of hard rock drilling construction, in particular to a rock breaking hob, a shield tunneling machine cutterhead and a shield tunneling machine. The rock breaking hob comprises a cutter shaft, an annular cutter body and a plurality of pressurizing assemblies; an annular cavity communicated with an external high-pressure water source is formed in the cutter shaft; the annular cutter body is rotationally arranged on the cutter shaft, and a plurality of blind holes are formed in the annular cutter body; the pressurizing assembly comprises a compression block, a plugging block and a first elastic piece; the compression block is in sealed sliding connection with the inner wall of the blind hole to form a compression cavity, and a plurality of first channels used for communicating the compression cavity with the annular cavity are formed in the annular cutter body; a sliding groove, a communicating hole and a water spraying hole are formed in the compression block; the sliding groove communicates with the compression cavity through the communicating hole. The sliding groove communicates with the end face of one end of the compression block through the water spraying hole. The plugging block is slidably connected with the sliding groove and blocks the water spraying hole when located at the end, close to the central axis of the annular cutter body, in the sliding groove. The first elastic piece is used for enabling the compression block to pop out of the blind hole. The rock breaking device has the effects of reducing water source waste and improving the rock breaking efficiency.

The invention belongs to the field of drilling, and particularly relates to a large-diameter cluster type pneumatic down-the-hole hammer raise-boring reamer bit and a drilling method.The bit comprises a center pipe, a cluster body, an air chamber, a down-the-hole hammer, a synchronous check valve, an air chamber pressure balance control assembly and a concave slag falling channel and is used for transmitting torque and rotating speed and conveying high-pressure air; the top of the central pipe is sleeved with a flange used for being connected with a drill rod, the central pipe is sequentially sleeved with a front guide wing plate, an upper fixing plate, a middle plate, a high-frequency rear seat, an air chamber peripheral cylinder and an air chamber lower cover plate in the extending direction of the central pipe, and the front guide wing plate, the upper fixing plate, the middle plate, the high-frequency rear seat, the air chamber lower cover plate and the central pipe jointly form a cluster body; two ends of the air chamber peripheral cylinder are respectively connected with the high-frequency rear seat and the air chamber lower cover plate to form an air chamber; according to the drill bit, the multiple down-the-hole hammers are integrated through the cluster body, efficient rock breaking and continuous slag discharging are achieved in combination with air chamber energy gathering, synchronous check valve control and a concave slag falling channel, and the drilling efficiency is improved by more than 10 times.

The invention relates to the technical field of drilling engineering, and discloses an impact-assisted rock breaking inwards-concave PDC drill bit which comprises a drill bit body and an impact structure, and the drill bit body is provided with an inner cavity and a first transmission protrusion arranged at the head of the drill bit body; the impact structure comprises a turbine, a transmission shaft and an impact blade, the turbine is arranged in the inner cavity of the drill bit body, the impact blade is arranged outside the drill bit body, the transmission shaft is connected between the impact blade and the turbine and provided with a second transmission protrusion, and the turbine is used for driving the transmission shaft to rotate; the second transmission protrusion and the first transmission protrusion abut against each other or are staggered in the rotating process. The impact cutter wings are used for stretching out relative to the drill bit body when the second transmission protrusions abut against the first transmission protrusions; a reset spring is further arranged between the transmission shaft and the drill bit body and used for driving the impact blades to reset when the second transmission protrusions and the first transmission protrusions are staggered. The high-frequency axial reciprocating motion of the impact blades directly crushes the center area of the drill bit, and the rock breaking efficiency of the center area of the drill bit is improved.

The invention provides a shield hob type selection and tunneling parameter optimization method and device, a terminal and a medium, and belongs to the technical field of shield construction, and the method comprises the steps: obtaining the stratum information of a target project, the selectable type and / or value range of shield hob structure parameters, and the value range of tunneling parameters; constructing a rock mass discrete element model based on stratum information; presetting combinations of multiple groups of tunneling parameters and shield hob structure parameters; aiming at each group of combination, constructing a corresponding hob model, obtaining a rock breaking numerical simulation model based on the hob model and the rock mass discrete element model, inputting the tunneling parameters in the current combination into the rock breaking numerical simulation model for simulation calculation, and obtaining rock breaking specific energy and wear specific energy of the hob; and final shield hob structure parameters and tunneling parameters are determined. According to the method, the rock breaking numerical simulation model is constructed and the simulation calculation is performed, so that the rock breaking specific energy and the wear specific energy of the hob can be obtained, and the hob structure parameters and the tunneling parameters are cooperatively evaluated.

The invention discloses an impacting-splitting-cutting composite rock breaking configuration of a cantilever type heading machine, relates to the field of coal mine underground heading equipment, and solves the problems of low efficiency, serious cutting pick abrasion, poor stability and insufficient adaptability of an existing heading machine during hard rock operation. A multi-stage cylinder executing mechanism is arranged on a cutting arm of the heading machine, an angle adjusting rotary table is arranged at the upper end of the multi-stage cylinder executing mechanism, and a breaking hammer and a rock cracking machine are arranged on the angle adjusting rotary table; the angle adjusting rotary table comprises a track plate and a rotary table, and the rotary table drives the track plate to rotate; a breaking hammer is arranged at one end of the track plate, and a rock cracking machine is arranged at the other end. The breaking hammer and the rock cracking machine are integrated at the front end of the heading machine, pre-broken rock can be split, the number of times of breaking is reduced, vibration and noise caused by repeated breaking are avoided, the internal stress of a rock stratum is damaged by additionally arranging the rock cracking machine, other work of the whole machine is not affected, and the service life of the heading machine is not affected.

The invention discloses a simulation method and system for microwave-induced heterogeneous rock heating fracture, and relates to the technical field of rock crushing engineering.The simulation method comprises the steps that an image of the surface of heterogeneous rock is obtained, and contour images and distribution characteristics of various mineral components in the image are extracted; establishing a microwave heating model in finite element software, and establishing a GBM numerical model in discrete element software; inputting the mineral composition contour image into finite element software, obtaining a pixel value, assigning the pixel value, and carrying out microwave heating simulation; and performing temperature assignment on the temperature discretization conversion, the GBM numerical model and the thermodynamic constitutive model as final temperature distribution, and performing thermal-mechanical coupling calculation on the GBM numerical model to obtain final temperature field distribution and a fracture mode. According to the method, the limitation of generating a numerical model through a traditional random function is broken through, the numerical model based on real mineral distribution is constructed through the image recognition technology and refined numerical modeling of the mineral crystal model, the accuracy is higher, and the method is more persuasive.

The invention provides an autonomous cutting control system and method for a roadway tunneling robot, and aims to solve the defects in the prior art. The system comprises an executing mechanism, a sensing and detecting system, a main control system and a control strategy module. The executing mechanism realizes posture adjustment and excitation through an oil cylinder and the like; the sensing and detecting system collects key parameters in real time; the main control system receives the processing data; the control strategy module comprises a cutting load identification module and the like, and control is optimized through an improved algorithm. In the method, working conditions are divided after sensor information is received, data are processed and an executing mechanism is controlled under the general working conditions, and hard point recognition or stuffy running condition judgment and control are conducted under the special working conditions. The method has the advantages that the IPSO and the BP neural network are combined in a control algorithm, so that the control stability and the tunneling efficiency are improved; the intelligent degree is high, and automatic cutting path planning and real-time dynamic adjustment are achieved; the posture adjusting precision is high, and the rock breaking efficiency and the roadway forming quality are improved; the cutter posture is optimized, and cutter abrasion is reduced.

The invention discloses an intelligent operation method and system for a double-arm drill jumbo of a large-section tunnel, and relates to the field of tunnel construction, the geometry, integrity, dust and humidity data of a section are collected in real time through a laser radar, an IMU and a surrounding rock pressure and environment sensor, and an operation environment database is constructed and updated; by combining the strength grade of the surrounding rock and the distribution of the soft layer, the posture of the arm support, the chiseling frequency and pressure and the rock entering angle of the bucket teeth are adjusted online in a self-adaptive mode; switching among a high-frequency impact mode, a bucket tooth wedging prying mode and a free face gravity automatic rock breaking mode according to working conditions; excessive impact is restrained and protection is triggered through a vibration monitoring closed loop, efficiency is improved, energy consumption is reduced, secondary damage is reduced, and construction safety and quality are guaranteed.

The invention discloses a drill rod tension type vertical shaft tunneling process which comprises the following steps: constructing a pilot shaft into a stratum by utilizing a raise boring machine, constructing a starting shaft, sequentially hoisting a tunneling machine and a hanging scaffold system into the starting shaft by utilizing hoisting equipment, and driving a tension drill rod to sequentially penetrate through the hanging scaffold system and the tunneling machine by utilizing the raise boring machine, and the tunneling machine continues to be lowered into the lower horizontal roadway and is fixed through the drill rod tensioning device, the tunneling machine starts to conduct tunneling circulating operation downwards along the tension drill rod through the stepping mechanism, and the hanging scaffold system conducts well wall supporting circulating operation downwards along the tension drill rod through the stepping mechanism till the tunneling machine conducts tunneling to the lower horizontal roadway. The tension drill rod serves as a main fixing structure and can bear the weight of the heading machine, the rock breaking positive pressure and the weight of the hanging scaffold, and the heading effect is supported not to be affected and limited by the stratum; the tension drill rod provides guidance, and the tunneling machine is guided on a correct tunneling path in real time, so that the construction efficiency and the tunneling well completion quality are improved.

The invention belongs to the field of dangerous rock monitoring, and provides a dangerous rock monitoring method, device, equipment and medium based on wide-area electric shock amplitude frequency, and the method comprises the following steps: carrying out high-frequency wide-area electromagnetic method detection, electromagnetic radiation monitoring, micro-motion detection and vibration signal monitoring on a dangerous rock monitoring area; based on the high-frequency wide-area electromagnetic data at different time points, whether resistivity difference abnormity exists or not and whether an electromagnetic radiation abnormal event occurs or not are determined; based on the micro-motion data at different time points, whether speed structure difference abnormity exists or not and whether a vibration abnormal event occurs or not are determined; and when the electromagnetic radiation abnormal event and the vibration abnormal event are synchronous in occurrence time and consistent in spatial positioning, determining that the event is a rock crushing event. Through multiple detection means, broadband range real-time monitoring of electromagnetic signals and vibration signals is realized, abnormal signals generated by internal changes of rocks can be detected and identified to the maximum extent, the dangerous rock disaster-pregnancy process is effectively monitored, ground disaster missing report is reduced, and the early warning success rate is improved.

The invention relates to the technical field of deep roadway blasting, and discloses a high-energy micro-damage coordinated control blasting method and system for a deep roadway. The method comprises the following steps: acquiring physical and mechanical parameters of surrounding rock, high ground stress parameters and explosive performance parameters; determining the rock critical crushing energy consumption density of the surrounding rock under the action of high ground stress; based on the energy consumption density, the explosive performance parameters and the explosion energy dissipation rule, a slotting position layout scheme is determined; determining a slotting angle layout scheme by combining high ground stress and interaction of a fracturing angle and a slotting angle; slotting holes are formed, and a high-energy hole in the center of a working face is excavated And adjusting high-energy hole charging parameters and a detonation time sequence, and sequentially detonating to realize blasting. According to the method, the high ground stress guiding effect and the explosion energy dissipation rule are utilized, high-energy rock breaking and surrounding rock micro-damage control are coordinated, the rock breaking efficiency and the explosive energy utilization rate are improved, the surrounding rock stability is guaranteed, and the method is suitable for deep high-stress roadway blasting construction.

The invention relates to the technical field of petroleum drilling tools, in particular to a shaft-torsion coupling percussion drilling speed increasing tool which comprises a shell, an upper water wheel, a torsion percussion assembly, a lower water wheel and an axial percussion assembly. The tool is reasonable and compact in structure, the tool is installed at the position close to a drill bit, the upper portion of the shell is connected with a drill collar, the lower portion of the shell is connected with the drill bit, fluid enters the upper portion of a central channel to impact an upper water wheel, the upper water wheel drives an upper rotating shaft to rotate, and a torsion impact assembly periodically impacts a fixing block in the circumferential direction, so that a circumferential impact effect is generated on an outer cylinder; the fluid continuously flows downwards to impact the lower water wheel, the lower water wheel drives the lower rotating shaft to rotate, the axial impact assembly periodically impacts the outer barrel in the axial direction, and then the axial impact effect is generated on the drill bit on the lower portion. The tool can transmit periodic torque and axial impact to the drill bit, the rock breaking speed of the drill bit is increased, the drilling period is shortened, and then cost and time are saved.

The invention discloses a roadway tunneling and conveying all-in-one machine with impact cutting teeth for assisting rock breaking. The roadway tunneling and conveying all-in-one machine comprises a walking mechanism, a main machine body, a material conveying mechanism, a material receiving mechanism, a multi-dimensional adjusting mechanism, a rotary driving mechanism and a cutting head mechanism. Cutting tooth units distributed along a spiral track are arranged on the surface of the cutting head mechanism, energy storage rebound mechanisms are arranged in the cutting tooth units, impact inertia kinetic energy is stored and released through multi-layer irregular arrangement of balls, secondary rock breaking is achieved, and the cutting efficiency and the hard rock adaptability are improved. The multi-dimensional adjusting mechanism expands the operation range through cooperation of a rotating base, a hydraulic cylinder and a hydraulic telescopic rod. The material receiving mechanism comprises an angle-adjustable material containing plate and symmetrically-arranged material sweeping wheels, the material sweeping wheels buffer a material pushing plate through springs to avoid collision damage, and an auxiliary feeding mechanism is arranged to enhance the material conveying continuity. Impact kinetic energy is recycled, the cutting range is flexible and adjustable, efficient collection and conveying of materials are integrated, and the device is suitable for high-hardness rock stratum roadway tunneling.

The invention relates to the technical field of petroleum and natural gas drilling engineering, and discloses a deep well geological exploration tunneling parameter control system and method, and the system comprises a signal collection and synchronization module which collects drilling parameters and aligns timestamps; the initialization and modeling module is used for calculating fluid transmission time lag and blade skim-over frequency; the active disturbance generation module generates a target bit pressure instruction superposed with sine disturbance to drive load application; the two-channel feature extraction and verification module aligns the historical torque and the current pressure according to time delay and calculates the confidence coefficient in combination with the frequency; the adaptive decision and closed-loop control module uses the confidence coefficient to correct the gain and update the reference bit pressure to form a closed loop. A dual-channel verification framework based on fluid-structure interaction transmission time lag and blade characteristic frequency is constructed, the covering effect of long-distance drill column friction torque on real cutting torque in deep well operation is effectively stripped, and it is ensured that a control system only responds to effective rock breaking action.

The invention relates to a rock breaking hob mechanism, a using method of the rock breaking hob mechanism and a tunnel boring machine. The rock breaking hob mechanism comprises a cutterhead, a first hob, a second hob and a nozzle. The cutterhead is configured to be rotatable; the first hob is arranged on the cutterhead; the second hob is arranged on the cutterhead, the first hob protrudes out of the second hob in the axis direction of the cutterhead, and the distance between the first hob and the axis is not equal to the distance between the second hob and the axis in the radial direction of the cutterhead; the nozzle is arranged on the cutter head, the distance between the nozzle and the axis is equal to the distance between the first hob and the axis in the radial direction, and the nozzle is configured to jet fluid. According to the rock breaking hob mechanism provided by the invention, the first hob and the nozzles are cooperatively matched, so that the use amount of the nozzles is reduced, the energy consumption of high-pressure water jet is reduced, and the defect that the cutting seam depth of the high-pressure water jet is limited under a high moving speed working condition is effectively improved.

The invention relates to a gas tunnel self-rotating type asymmetric water jet slotting device which comprises a slotting device body, a middle body, a valve element, a front end and a rear end, the front end and the rear end are arranged at the front end and the rear end of the slotting device body respectively, the middle body is rotationally arranged in the slotting device body, the valve element is slidably arranged in the middle body, and the valve element is arranged in the middle body. The rear end head is communicated with the interior of the middle body; a lateral hole is formed in the middle rear part of the middle body, a nozzle is mounted on the lateral hole, and a main body discontinuous hole is formed in the slotting device main body. The invention further provides a using method of the device. On the premise that the drill rod stops rotating, the rotary cut-off type high-pressure pulse water jet is jetted outwards only by changing the pressure and flow of input fluid, the coal rock breaking capacity is high, the structure is simple, operation is convenient, and economical and practical effects are achieved.

The invention relates to the technical field of drilling machine cooperative control, and discloses an efficient rock breaking and slag discharging cooperative control system of a mining crossing bottom angle drilling machine. The system is integrated with a data acquisition assembly, an intelligent analysis assembly and a regulation and control assembly. The data acquisition assembly collects vibration signals and deslagging parameters in the rock breaking process of the drilling machine in real time, and a rock breaking oscillogram and a state description text are generated based on the signals and the parameters. A multi-modal recognition model and a mechanism simulation model are arranged in the intelligent analysis assembly, the multi-modal recognition model jointly processes the rock breaking oscillogram and the state description text to output rock breaking working condition classification, and the mechanism simulation model analyzes characteristic parameters from the rock breaking oscillogram, matches the characteristic parameters with a standard mechanism library and outputs a working condition matching result. And the regulation and control assembly performs comprehensive evaluation according to output classification and matching results of the intelligent analysis assembly, generates a drilling machine control command and optimizes the rock breaking and slag discharging process. According to the system, intelligent cooperative control over rock breaking and slag discharging is achieved.

The invention belongs to the technical field of lunar exploration equipment, and provides a step-by-step laser-assisted rock breaking drilling tool and method for a lunar-based extreme environment, the drilling tool comprises a conversion disc, a rock drilling tool and a laser head, the laser head and the rock drilling tool are integrated in the same drilling tool structure through the conversion disc, laser or mechanical rock breaking modes can be switched according to working conditions, and the laser or mechanical rock breaking modes can be switched according to the working conditions. And step-by-step rock breaking is realized. The drilling tool is suitable for extreme environments such as low gravity, vacuum, high dust and severe temperature change of the moon, has the advantages of being compact in structure, flexible in switching and high in energy utilization rate, and can be widely applied to tasks such as lunar soil stripping, lunar rock mining, underground structure detection and lunar base construction.

The invention relates to the technical field of excavator dust removal, in particular to an intelligent dust removal system and method for mechanical rock breaking, laser beams are emitted to an operation area where an excavator execution component works through a laser module, and when flying dust appears in the operation area, a visual sensor can observe the reflected laser beams; the dust raising range and the dust raising concentration are determined according to the length and the brightness of the laser beams, so that a spraying parameter combination of the spraying module is generated, the spraying parameter combination is sent to the spraying module, the spraying module sprays water mist towards the rock breaking working face generating dust raising, and dust falling is achieved through combination of the water mist and dust raising particles. The whole working process does not need manual intervention, the safety of operators is improved while the good dust falling effect is achieved, meanwhile, manual operation is not needed, and the labor cost is reduced.

The invention discloses a high-power multi-channel independent delay detonation control system which comprises a main controller, the main controller is connected with an integrated cabinet, a battery pack module, an inverter module and a rectifier module are arranged in the integrated cabinet, and a controller module, the battery pack module, the inverter module, the rectifier module and the controller module are connected in sequence; a heat dissipation system is arranged in the integrated cabinet, and the controller module is connected with an ignition device in the blast hole. The invention further discloses a high-power multi-channel independent delay detonating control method, the problems that existing detonating equipment is short in discharging time, small in discharging current, low in discharging power and few in output channel are solved, and the high-power multi-channel independent delay detonating control method can be widely applied to bursting balloons and detonating fireworks and crackers. And the device can also be used as detonating equipment for an explosive blasting technology, a carbon dioxide blasting technology and a liquid oxygen rock breaking technology.

The application provides a novel reaming drill bit device and a reaming method thereof, which comprises a reaming drill bit and a drill rod connector, the reaming drill bit comprises a drill bit base, a hollow bolt, a limiting block, a spring, a sliding rod and a cutter, one end of the drill rod connector is connected with a drill rod, and the other end of the drill rod connector is connected with the drill bit base; symmetric sliding grooves are formed on both sides of a cutting seam of the drill bit base; the cutter is fixed in the sliding groove through a sliding rail, and is automatically opened by sliding down along the sliding groove under resistance to rotate and ream; the cutter pushes the sliding rod to slide down to compress the spring, the drill rod is withdrawn after reaming, the spring pushes the sliding rod to slide up to drive the cutter to slide up, and the cutter returns to the original position; the drill rod in the hole is completely withdrawn, and cylindrical reaming is formed; the application only needs to replace the drill bit after drilling a relatively short hole, realizes reaming while drilling, and forms the reaming structure at one time, so that the workload of replacing the reaming drill bit can be greatly reduced; and the rock breaking capacity is relatively high, and the application is suitable for a relatively wide range of rock layers.

The application discloses a TBM cutter rock breaking efficiency optimization method and control system based on penetration and cutter spacing coupling, comprising: constructing a double-cutter rock breaking linear cutting numerical model, wherein the double-cutter rock breaking linear cutting numerical model is a discrete element model; simulating the double-cutter rock breaking linear cutting numerical model, and calculating the rock breaking specific energy consumption under the cutting action of different penetrations and cutter spacings according to the simulation result, wherein the rock breaking specific energy consumption is calculated according to mechanical parameters and lithology parameters; fitting the rock breaking specific energy consumption under different penetrations, and obtaining an optimal cutter spacing according to the fitting result, calculating the cutter spacing and penetration ratio according to the optimal cutter spacing; obtaining an optimal penetration and cutter spacing combination according to the trend of the cutter spacing and penetration ratio; and adjusting the penetration and cutter spacing of the TBM cutter according to the optimal penetration and cutter spacing combination, so as to improve the rock breaking efficiency and construction speed of the TBM.

The utility model relates to the technical field of rotary drilling head, and disclose adjustable drilling angle's rotary drilling head. This adjustable drilling angle's rotary drilling head, including drill bit body, first drill tooth and second drill tooth, the bottom fixedly connected with the first drill tooth of annular array distribution of drill bit body, the outside of drill bit body lower extreme is offered with the installation hole that is annular array distribution and with inside intercommunication, the inside of installation hole all is fixedly connected with the shaft that extends to the inside of drill bit body, this device have adjustable drilling angle, strong adaptability, adjustment convenient and so on advantage, solved the traditional rotary drilling head drill tooth drilling angle unadjustable, lead to face different hardness, bedding structure's rock and soil, cannot optimal rock breaking, in turn lead to drilling efficiency reduction and, and if need to change drilling angle, must dismantle drill bit and re -weld or install, time -consuming and labor -intensive and influence construction progress's problem.

The invention relates to the technical field of well drilling equipment, and discloses a well drilling hob and a machining method thereof.The well drilling hob comprises a drill bit body and a cone assembly and further comprises an energy storage barrel fixedly arranged in the axial center area of the drill bit body and used for storing and releasing energy in the drilling process; the three sets of cone assemblies are arranged on the periphery of the energy storage cylinder in a surrounding mode and driven by the energy storage cylinder to rotate so as to adjust the working postures of the cone assemblies. According to the scheme, the center crushing assembly is arranged, under the driving of the energy storage cylinder, the hammer head can violently impact a rock core in the center of the shaft bottom, the problem of a center crushing blind area of a traditional tricone bit is solved, the rock breaking efficiency and the drilling speed are directly improved, the energy storage cylinder is arranged, the energy storage cylinder is arranged, and the service life of the tricone bit is prolonged. Violent vibration of the drill bit caused by the fact that the center rock is not broken is effectively restrained, and the stability and reliability of the whole drilling tool system are improved.

The present application belongs to the field of oil drilling technology, and discloses a PDC drill bit for rock breaking by pressure pulse impact oscillation. The specific technical scheme is as follows: the PDC drill bit for rock breaking by pressure pulse impact oscillation is composed of an upper threaded joint, a shell, a jet pulse block and a drill bit. The jet pulse block is composed of a fluid inlet, a left feedback channel outlet, a right feedback channel outlet, a left fluid channel, a right fluid channel, a left backflow feedback inlet, a left backflow annular fluid channel, a right backflow feedback inlet, a right backflow annular fluid channel, a fluid outlet and a fluid outlet cavity. After the drilling fluid passes through the upper threaded joint, it enters the jet pulse block from the fluid inlet, and then passes through the fluid outlet and flows out from the drill bit water eye. When the drilling fluid passes through the jet pulse block, the flow direction of the drilling fluid will change periodically due to the action of the feedback channel, and a pressure pulse will be generated, forming impact oscillation, and thus accelerating the rock breaking and drilling of the drill bit. The present application has the function of improving the rock breaking efficiency of the drill bit by relying on pressure pulse impact oscillation.