459 results about "Rock breaking" patented technology

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 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 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 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 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 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 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 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.

The present application provides a kind of formation threshold WOB and threshold torque determination method and device, belong to drilling engineering technical field, the method includes: obtaining different preset top drive speed under, in the preset WOB interval, the mechanical drilling speed, torque value and drill bit vibration parameters corresponding to different WOB value;For each preset top drive speed: based on the WOB value of the preset top drive speed and the mechanical drilling speed corresponding to the WOB value, determine the initial threshold WOB of the preset top drive speed from the WOB value;Based on the initial threshold WOB of the preset top drive speed, the torque value corresponding to the preset top drive speed is determined as the initial threshold torque of the preset top drive speed;Based on the drill bit vibration parameters corresponding to initial threshold WOB, initial threshold WOB and initial threshold torque are corrected, and formation threshold WOB and formation threshold torque are obtained.The present application has the advantages of simple calculation method, more accurate result, can effectively guide the selection of drill bit and screw rod, improve the mechanical drilling speed, and improve the rock breaking efficiency.

The invention discloses a vertical shaft cantilever type partial section tunneling system which comprises a working platform and further comprises an excavating and loading main body structure arranged at the lower end of the working platform. The plurality of horizontal conveyors are uniformly distributed on the working surface of the shaft bottom of the vertical shaft; the multiple sets of excavating equipment are arranged on the excavating and loading main body structure and are arranged between every two adjacent horizontal conveyors at intervals; the vertical conveying device is arranged on the working platform, a plurality of horizontal conveyors are arranged, excavating equipment is arranged between every two adjacent horizontal conveyors, the working face of the bottom of the vertical shaft can be evenly divided into a plurality of working areas, and therefore the crushing and tunneling speed of a rock stratum is multiplied. The crushing and tunneling efficiency is improved, meanwhile, the equipment cost can be reduced, and the device is suitable for different section geological conditions, more flexible to use and easy to maintain.

The invention relates to the technical field of mine drilling, in particular to an energy-saving hole collapse prevention drilling tool. Comprising a driving part, a cylinder and a sealing part, the driving part and the sealing part are in threaded connection with the two ends of the cylinder respectively, a gear ring is rotationally connected into the cylinder, an output shaft of the driving part is rotationally connected with a planet carrier and fixedly connected with a sun gear, and the planet carrier is rotationally connected with a planet gear meshed with the gear ring and the sun gear; the planet carrier is provided with a power shaft which is in limiting sealing sliding and rotating connection with the sealing piece, and the power shaft is fixedly connected with a connecting piece used for installing a drill bit. Working modes are automatically switched according to the torque borne by the power bearing, high-speed rotation is adopted in a soft soil layer, the drilling efficiency is improved, and the drill bit abrasion and hole collapse risks are reduced; and the hard rock stratum is converted into low-speed rotation to be combined with axial impact, the rock breaking capacity is enhanced, the drilling speed is maintained, meanwhile, light weight, miniaturization and low-cost manufacturing of equipment are achieved, and therefore the overall mass of the drilling tool is reduced, the number of power sources is reduced, and drilling energy consumption is reduced.

The utility model discloses a kind of rock breaking devices of self-adaptive ultrahigh pressure gas can be repeatedly automatically released and hole sealing, it is related to gas fracturing technical field, the device includes: fracturer, the both ends of fracturer are respectively provided with first end cap and second end cap, the inside of fracturer is provided with reaction cabin;Pressure-increasing mechanism, is inserted in first end cap, for by the combustion of biomass foam, make reaction cabin internal air pressure rise;Piston assembly, between fracturer and second end cap, for with second end cap cooperation, release gas, to realize rock breaking;Hole sealing mechanism, located at the outside of fracturer, for preventing gas to leak out, to maintain fracturing instantaneous hole sealing integrity;Second end cap, for making gas cluster to spray out.The utility model is balanced by using the gas pressure of reaction cabin and top pressure cabin inside fracturer and the special structure of piston, more efficient completion rock fracturing is realized without installing rupture disc in fracturer and frequently disassembling replacement condition.

This invention discloses a novel combined microwave-drilling device for hard rock, belonging to the field of rock breaking technology. It includes a ground control system and a microwave generator. One end of the ground control system is connected to the microwave generator; a power box is connected to the bottom of the microwave generator, and a rock-breaking motor is installed inside the power box. The drilling tool of this invention consists of a pre-drilling small drill bit and a reaming large drill bit. The pre-drilling small drill bit acts as a pilot tool, drilling a guide hole on the rock surface through high-speed rotation. Simultaneously, it utilizes the local high stress concentration effect of its cutting edge to pre-damage the rock mass surrounding the hole wall, forming a micro-crack network, significantly reducing the integrity and strength of the rock mass. The reaming large drill bit efficiently enlarges the drilling cross-section of the weakened rock mass. Through the synergistic effect of mechanical fracturing and microwave thermal assistance, the drilling cross-section is rapidly enlarged, while reducing energy loss and tool wear during pure mechanical drilling.

The invention discloses an ultrasonic zoning excitation auxiliary rock breaking device which comprises a rock mass inherent frequency zoning detection system and an ultrasonic zoning excitation system, the ultrasonic zoning excitation auxiliary rock breaking device is installed on a rock drill through a cylindrical fastening propelling device, and a hydraulic propelling device ensures that a compaction sector ring is tightly attached to a rock mass; the rock mass inherent frequency partition detection system performs annular partition amplitude detection on the surface of a rock mass through a compaction sector ring, data is transmitted to an amplitude data collection system and an inherent frequency analyzer, and inherent frequencies of all partitions are determined and transmitted to an ultrasonic generator; high-frequency alternating currents with different frequencies are input into the ultrasonic generator, the high-frequency alternating currents are input into the ultrasonic transducers which are annularly arranged and mutually independent through the circuit control system according to the frequencies, and vibration generated by the ultrasonic transducers is concentrated to the compaction sector ring at the top end through the amplitude-change pole. And performing partition excitation of different frequencies on the construction rock mass. Therefore, large-range and high-efficiency excitation of the rock mass is realized.

The utility model discloses a high-low pressure alternating pulse auxiliary rock breaking PDC drill bit, which relates to the technical field of petroleum drilling, and comprises a drill bit main body, the drill bit main body is provided with an inner ring nozzle and an outer ring nozzle, the diameter of the inner ring nozzle is different from that of the outer ring nozzle, the drill bit further comprises a guide plate sleeved in an inner cavity of the drill bit main body, and the periphery of the guide plate is provided with a guide hole; the top of the impeller is connected with the flow guide plate; the fixed baffle is arranged in an inner cavity of the drill bit body in a sleeving mode and comprises arc-shaped baffles arranged in the middle of the impeller in a sleeving mode, lower baffles are arranged at the bottoms of the vertical overflowing holes between every two adjacent arc-shaped baffles, and horizontal overflowing holes are formed between every two adjacent lower baffles; the movable disc valve is arranged at the bottom of the impeller in a sleeving mode, overflowing holes are formed in the periphery of the movable disc valve, and when fluid washes the impeller through the flow guide holes, the impeller drives the movable disc valve to rotate, so that alternate jetting of the inner ring nozzle and the outer ring nozzle is achieved, the rock breaking efficiency of the PDC drill bit is improved, the well bottom state can be effectively improved, and the well drilling cost is reduced.

The invention belongs to the technical field of mineral resource exploration, and particularly relates to an ultrasonic vibration assisted rock breaking device and a drilling method. The ultrasonic vibration assisted rock breaking device comprises a rack and loading system, a rotary drilling system, an ultrasonic vibration system and a measurement control system. Current is transmitted to a piezoelectric ceramic group through a conductive slip ring and a carbon brush of the ultrasonic vibration system, the piezoelectric ceramic group is excited to generate ultrasonic vibration, and amplified high-frequency vibration is continuously transmitted to a drill rod and a drill bit of the rotary drilling system which rotates at a high speed through an amplitude-change pole type ultrasonic vibrator; and rotation-vibration composite rock breaking is achieved. The method comprises the steps of preparing a rock sample and setting initial parameters, fixing the rock sample, applying axial drilling pressure, starting drilling fluid circulation, starting rotary drilling, starting ultrasonic vibration, and performing real-time monitoring and self-adaptive adjustment, the parameters can be adjusted in real time according to rock stratum changes, the rock breaking efficiency of the hard rock stratum is remarkably improved, the drilling load is reduced, and the drilling efficiency is improved. And the service life of the drill bit is effectively prolonged.

The invention discloses an impact type rock breaking tool performance testing device and a design method. The device comprises a force measuring component and a pressure bearing spring. The pressure-bearing spring is fixed between the bottom plate and the top plate; the top plate is covered with a loading plate. The force measuring component comprises a force measuring component upper plate and a force measuring component lower plate. The force sensor is fixed between the force measuring component upper plate and the force measuring component lower plate; the force measuring component lower plate is fixed above the loading plate; an inner side panel of the high-damping rubber energy dissipation part is connected with the loading plate; the method comprises the following steps: establishing a testing device-foundation-site soil body integral three-dimensional finite element model through stress characteristics of parts, and determining design parameters of a loading plate, a pressure-bearing spring and a rubber energy dissipation part through numerical analysis; the problems of huge fund and time cost, high underground fault risk, low test efficiency and the like existing in the performance and service life test of the impact rock breaking tool in the prior art are solved.

The application discloses a multi-well linkage drilling parameter multi-level optimization decision method and system, and the method comprises the following steps: acquiring real-time drilling data in the drilling operation process to determine a first rock breaking parameter; in the case that the first rock breaking parameter is out of a preset range, predicting a mechanical drilling speed corresponding to the real-time drilling data according to a preset model; generating a plurality of candidate parameter groups according to the mechanical drilling speed and drilling constraint conditions, determining a function value corresponding to each candidate parameter group based on a target function of multi-objective optimization; determining a target parameter group in the plurality of candidate parameter groups according to the function value of each candidate parameter group; and determining a target drilling operation parameter according to the target parameter group, so as to take the target drilling operation parameter as a current drilling operation parameter for drilling operation. The above scheme can avoid complex downhole conditions, intelligently optimize the drilling operation parameter by using a multi-objective optimization algorithm, and comprehensively improve the drilling efficiency.

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 embodiment of the application provides a square drill hole pile hole forming equipment and method, wherein the equipment comprises a drilling machine shell, a central shaft drill rod is vertically arranged in the drilling machine shell, a rotating driving device is connected to the top end of the central shaft drill rod, a rotary excavator drill bit is connected to the bottom end of the central shaft drill rod, helical blades are fixed to the outer wall of the central shaft drill rod, the rotating driving device drives the central shaft drill rod, drives the rotary excavator drill bit to rotate and drill to form a circular hole, an impact driving device is arranged at the bottom of the drilling machine shell, four impact drill bits are connected to the output end of the impact driving device, the impact drill bits are arranged at the four corners of the bottom periphery of the rotary excavator drill bit, the impact drill bits vertically move up and down, reciprocating rock breaking is realized, the circular hole is reamed, and finally a square hole is formed. The application can realize full-automatic mechanical drilling, realize square hole forming at one time, has wide application range, small environmental pollution and low overall equipment cost.

The utility model provides a coupling confining pressure loading abrasive jet assisted TBM (Tunnel Boring Machine) rock breaking test device, which comprises: an abrasive jet mechanism, the abrasive jet mechanism comprises a pressurizing part, the pressurizing part is connected with a slurry supply part, and the pressurizing part is connected with a jet nozzle; the confining pressure loading mechanism is internally provided with a loading seat, and a rock sample is placed on the loading seat; and the hobbing cutter penetration mechanism is mounted on the confining pressure loading mechanism. By additionally arranging the abrasive jet mechanism, the TBM rock breaking test under the assistance of abrasive jet can be realized; and by arranging the confining pressure loading mechanism, the confining pressure applied to the periphery of the rock sample can be adjusted, and then the influence on the abrasive jet assisted TBM rock breaking test under different confining pressure conditions is studied.

The invention discloses a liquid oxygen rock breaking shock wave front edge form testing device which comprises a test bed, a cartridge bag fixing seat is fixedly connected to the middle of the test bed, a test cartridge bag is placed on the cartridge bag fixing seat, a first closed box body is fixedly connected to one side of the test bed, and a second closed box body is symmetrically and fixedly connected to the other side of the test bed. Optical guide rails are arranged in the first closed box body and the second closed box body, the optical guide rail in the first closed box body is in sliding connection with a first optical element arranged along an optical path, and the optical guide rail in the second closed box body is in sliding connection with a second optical element; a high-speed camera is arranged at the end, away from the medicine bag fixing base, in the second closed box. The invention further discloses a liquid oxygen rock breaking shock wave front edge form testing method. According to the testing device and the testing method disclosed by the invention, the problems that the physical and chemical change mechanism of the existing liquid oxygen expansion rock breaking is not clear and the comparative research on the aspects of the rock breaking effect and the dynamic response characteristic compared with the traditional explosive blasting is relatively deficient are solved.

The invention provides a real-time TBM (Tunnel Boring Machine) cross-tunnel-diameter surrounding rock category distinguishing method and system based on a rock breaking mechanism. The method comprises the following steps: acquiring tunneling data of different TBM construction tunnels, forming a sample data set, extracting tunneling parameters and equipment parameters of each engineering TBM, and forming a refining data set; extracting stable tunneling section data from the refined data set by adopting an MMD method, calculating DFPI and DTPI rock breaking characteristic indexes, and enabling the rock breaking characteristic indexes to correspond to surrounding rock category labels through pile numbers and tunneling time to obtain a surrounding rock grade data set; taking two standardized indexes of DFPI and DTPI as two-dimensional input variables, and constructing a two-dimensional Bayesian surrounding rock classification model; carrying out weighted fusion on [DFPI, DTPI] to obtain an index R, and constructing a one-dimensional surrounding rock discrimination model and a threshold identification method; and inputting the acquired TBM tunneling data into the one-dimensional surrounding rock discrimination model to obtain the surrounding rock grade of the current TBM tunnel face. According to the method, the model generalization ability is improved, and the problem that a current surrounding rock classification method is insufficient in physical interpretation is solved.

The invention provides an energy-gathering electrode device for breaking large rocks through electric pulses and a using method, and relates to the technical field of breaking of large rocks. The device comprises. The device comprises a positive electrode connecting port, a negative electrode connecting port, a liquid injection port, a rubber sleeve, a plugging piece, an insulating piece, a negative electrode ring and a positive electrode cross electrode structure. A V-shaped energy-gathering groove is formed in the periphery of the insulating part; and the tip of the positive cross electrode structure extends to the edge of the energy-gathering groove. During use, water is injected into the rubber sleeve, then the rubber sleeve is placed in a rock drill hole, the distance between the negative electrode ring and the positive electrode cross electrode is adjusted, so that a directional plasma channel is formed in the energy gathering groove through discharge, generated shock waves are transmitted to rock through a water medium, and energy gathering and releasing are achieved. The invention solves the problems of energy dispersion and low efficiency in traditional electric pulse crushing, is particularly suitable for directional and efficient crushing of large rocks, and has the advantages of simplicity and convenience in operation, high energy utilization rate and environmental protection.

The application discloses a rock blockiness identification device for sampling, which comprises multiple sets of layered screening assemblies, a blockiness identification camera assembly and a rock crushing treatment assembly. Each set of the layered screening assemblies is arranged in an up-down distribution. Each set of the layered screening assemblies is provided with a screening conveyor belt at the bottom. The feeding port of each set of the layered screening assemblies is arranged on one side of the screening conveyor belt of the previous set. The side of each set of the screening conveyor belts, which is away from the feeding port of the layered screening assembly, is arranged in an up-down vertical manner. The blockiness identification camera assembly is arranged below the layered screening assembly of the lowermost set. The blockiness identification camera assembly is arranged on the side of the screening conveyor belt, which is away from the feeding port of the layered screening assembly. The rock crushing treatment assembly is arranged on the side of the blockiness identification camera assembly, which is away from the layered screening assembly. The rock material is screened through the layered screening mode. The rock blockiness of the screened material is obtained through image recognition, so that the accuracy of rock blockiness identification is improved.

This invention discloses an intensive reverse borehole reaming construction method and equipment, relating to the field of underground engineering construction technology. The core of this method lies in innovating the traditional full-face rock breaking into a two-step process of "peripheral annular cutting + central hydraulic crushing": first, the roller cutter on the reaming drill bit cuts an annular groove in the rock strata, retaining a cylindrical central rock core; then, the hydraulic crushing device integrated into the reaming drill bit directly squeezes or impacts the central rock core, causing it to break and fall off entirely. This invention significantly reduces the rock breaking area and the number of roller cutters, significantly improving drilling efficiency and reducing energy consumption and tool wear. The corresponding equipment includes a drilling rig, drill rod, reaming drill bit, hydraulic power unit system, and an optional clamping and pressing device.