118results about How to "Improve rock breaking efficiency" patented technology

The invention discloses a multi-blade multi-angle rock breaking device for a rock ripper. The device comprises a self-reaction force frame body, an annular confining pressure loading workbench, a Z-direction servo actuator, an X-direction servo actuator, a Y-direction internal servo actuator, a horizontal dual-layer linear guide rail, a three-direction pressure sensor and the like, wherein the lateral moving direction of a rock test piece is set as an axis X; the propelling direction of the rock test piece is set as an axis Y; a direction which is vertical to the breaking surface of the rock test piece is set as an axis Z; the X-direction servo actuator is arranged between the horizontal dual-layer linear guide rail and the annular confining pressure loading workbench; the Y-direction internal servo actuator is arranged between the horizontal dual-layer linear guide rail and the self-reaction force frame body; and the Z-direction servo actuator is arranged between a guide rail guide mechanism and the self-reaction force frame body. In the device, the annular confining pressure loading function of rock is simulated, so that the rock test piece is closer to real geological conditions, parameter measuring values such as a blade distance and the like are more accurate, the design level of the rock ripper is raised, and tunnel construction accidents are controlled.

The invention discloses a radial horizontal drilling system using supercritical carbon dioxide and a drilling method thereof. The drilling system comprises a liquid carbon dioxide supplying device, a drilling device, an in-well pressure control device, a solid, liquid and gas three-phase separating device and a carbon dioxide recycling device, wherein the drilling device is arranged in a shaft, and includes an oil pipe, a steering gear mounted at the bottom of the oil pipe, and a flexible drill stem sleeved in the oil pipe; the flexible drill stem passes through the steering gear and then realizes steering; the flexible drill stem has a hollow drill stem channel; a supercritical carbon dioxide jet drill is mounted at the end of the part, in a horizontal direction, of the flexible drill stem; a nozzle, which is communicated with the drill stem channel, is formed on the jet drill; the in-well pressure control device is disposed at the opening of a well; the solid, liquid and gas three-phase separating device and the carbon dioxide recycling device are disposed on the ground. The radial horizontal drilling system disclosed by the invention uses supercritical carbon dioxide fluid as rock breaking fluid, thus avoiding pollution to oil reservoir layers, effectively protecting the oil reservoir layers, greatly increasing rock breaking efficiency, and realizing cyclic utilization of the carbon dioxide; and the radial horizontal drilling system using supercritical carbon dioxide and the drilling method thereof have important application value to increase of production of old wells and to development of unconventional oil-gas reservoir.

The invention relates to a high-frequency torsion and axial bidirectional impactor, and belongs to the technical field of oil and gas field well drilling and well repairing tools. The high-frequency torsion and axial bidirectional impactor comprises a housing, a connector, an alignment bearing, a turbine shaft, an upper hammer body and a lower hammer body, wherein the connector is mounted at one end of the housing in a threaded manner; the lower hammer body is glidingly mounted at the other end of the housing through an end cover and a buffer spring, and the turbine shaft is mounted in the housing through a nut; a turbine rotor and a stator are mounted at one end of the turbine shaft, and the upper hammer body is mounted at the other end of the turbine shaft. By adopting the high-frequency torsion and axial bidirectional impactor, contact stress between a drill bit and rock can be effectively increased, and crack expansion in a broken pit can be effectively improved, so that the rock breaking efficiency of the drill bit can be improved; the problems that when a conventional rotating well drilling mode is adopted, the well drilling efficiency is degraded, the service life of the drill bit is shortened, the well drilling period is long and the cost is high when a hard stratum is encountered can be solved; the high-frequency torsion and axial bidirectional impactor has active popularization meanings in well-drilling efficiency improvement and well drilling cost reduction.

The invention belongs to the technical field of tunnel engineering and discloses a laser-assisted tunnel boring machine and a rock-breaking method thereof. The machine is characterized by two rock breaking modes, a laser-hob rock breaking mode and a hob rock breaking mode. Identification and conversion of the two rock breaking modes can be achieved by an intelligent control system. The laser-hob rock breaking mode is used in hard rock sections for the improvement of rock breaking efficiency, while the hob rock breaking mode is used in soft rock sections. The main breaking mode of the laser-assisted rock breaking is hot-break, wherein a laser is used with a laser head installed on a cutter of the tunnel boring machine, supplemented by a water spray system, so that the goal of hot crack by laser irradiation with rapid cooling for assisting rock breaking by water spray and further excavation by mechanical rock breaking is achieved. With the reasonable selection of the rock breaking modes, the adaptation of the tunnel boring machine to complex geological conditions alternated with soft and hard rocks is improved, thereby the rock breaking efficiency is enhanced and the construction cost is saved.

The invention discloses a drilling power tool, a drilling tool and a drilling method for forming boreholes. The drilling power tool comprises an energy conversion mechanism and a valve shaft system. The energy conversion mechanism is a rotary generator. The valve shaft system comprises a stator, a rotor, a movable valve sheet assembly, a fixed valve sheet assembly and a shaft assembly, wherein the rotor makes a reciprocating motion right and left and drives the movable valve sheet assembly directly connected with the rotor. The energy conversion mechanism is a screw rod or a turbine or an impeller. According to the invention, when a drilling bit is rotated, the drilling pressure at the drilling bit and the drilling pressure at the bottom of a drilling well are similar to the continuous gentle change of the sine law, which is favorable for the strength reduction of surrounding rocks and the development of fractures, so that the rock breaking efficiency can be improved obviously. In addition, because the pressure at the drilling bit and at the bottom of the drilling well is changed periodically, the negative-pressure injection and the high-pressure injection are generated alternately; and when the pressure becomes lower, the well drilling in an underbalance manner or by using the gas drilling fluid is carried out, so that the surrounding rock environment is changed, and the mechanical drilling rate is improved obviously.

The invention discloses a dipping or high-dipping thin ore mechanical ore breaking continuous mining method. Tunneling machine mechanical ore breaking, goaf filling, stope carrying, supporting operation and the like all achieve parallel operation around a mining technology of a single mining operation face. Continuous ore drawing is achieved by moving a transferring ore bin, a tunneling machine conducts layer transferring returning at the ore end through a Y-shaped mining preparation structure and does not travel back, cutting engineering is avoided, point pillars and studs are not reserved, supporting is conducted only through fiberglass anchor bolts with good cuttability and meshes, and a dust-removal fan, a mobile substation and the like do not enter a stope and are all movably arrangedin mining preparation engineering. Mining and cutting engineering, all mining technologies and equipment power supplying are matched and then are mutually matched with the mechanical ore breaking efficiency, the technological continuity is improved, the efficiency of the tunneling machine is exerted to the greatest extent, and the mining mode of blasting ore breaking is changed basically. The mechanization degree is high, operating personnel are reduced greatly, the labor intensity is lowered, the goaf exposure time is short, and the mine intrinsic safety is improved. Through the highly-intensive parallel operation, the tunneling speed is high, the production efficiency is high, and the ore breaking cost is low.

The invention discloses a tunneling machine using laser for rock breaking. The tunneling machine structurally comprises a tunneling machine host and a water and electricity output system matched withthe tunneling machine host, wherein a cutter head system is arranged at the front part of the tunneling machine host; a plurality of laser generators are uniformly arranged on a cutterhead of the cutterhead system along the movement track; the emitting ends of the laser generators form an inclined angle with the tunnel face rock in the digging position; the laser generators are connected with thewater and electricity output system through a conveying and distribution pipe of a water and electricity conveying and distribution system; the conveying and distribution pipe is a porous pipeline integrating a water pipe and an electric wire pipe; the middle part of the tunneling machine host is provided with a driving system for driving the cutterhead system; a slag discharging system matched with the cutterhead system is arranged inside the tunneling machine host; a step system is arranged on the tunneling machine host. A laser ray system is used for solving the problem that the abnormal damage can easily occur during the rock cutting by a metal cutter; the suspension cutting rock breaking is used, so that the digging efficiency is improved; the digging cost is reduced.

The invention discloses a hydraulic simple harmonic oscillator for well drilling. The hydraulic simple harmonic oscillator consists of a power assembly, a valve assembly, a bottom assembly and an elastic short section, wherein the elastic short section is connected with the power assembly; a spiral blade is connected with a valve block; a fixed valve is mounted on the bottom assembly; a power shell is connected with the bottom assembly. Well drilling liquid drives the spiral blade to rotate, and the spiral blade drives the valve block to rotate, so that circulating holes of the valve block and the fixed valve are staggered to modulate simple harmonic pressure waves; the pressure waves are upwards transmitted to the elastic short section part to drive the power shell to generate continuous simple harmonic oscillation in the axial direction; therefore the friction between a drilling column and the well wall is effectively improved, and the drilling speed is increased. Oscillation impact force is downwards transmitted to a drilling head for jetting, so that rock breaking pressure is periodically changed, and rocks can be effectively broken. The hydraulic simple harmonic oscillator has the characteristics of simple structure, convenience in operation, safety, reliability, low pressure drop, high adaptability, no influence on the drill structure and the like and has an important significance in increasing the drilling speed and lowering the cost.

The invention discloses a microwave-assisted rock breaking drill bit, an electricity conductive drill rod and a microwave-assisted rock breaking device. The microwave-assisted rock breaking drill bit comprises a drill bit inserting body, cutter wings, cutting teeth and connectors, wherein the cutter wings, the cutting teeth and the connectors are distributed on the drill bit inserting body, assisted rock breaking microwave generators are embedded in the cutter wings, cables are embedded in the drill bit inserting body, independent electricity conductive coils are embedded at the positions of the connectors, and the cables are connected between the electricity conductive coils and the assisted rock breaking microwave generators; the inserting conductive drill rod comprises a drill rod body and connectors connected to two ends of the drill rod body, wherein the cables are embedded in the drill rod body, and the independent electricity conductive coils are embedded at the positions of the connectors of the drill rod; the microwave-assisted rock breaking device comprises a drill machine, a power supply system and a control system, wherein the control system comprises a microwave generation controller. For the microwave-assisted rock breaking drill bit, the electricity conductive drill rod and the microwave-assisted rock breaking device, heat generated by microwave radiation is applied to reduce the strength of rock or directly break the rock, so that not only the mechanical drilling rate can be increased, but also vibration in a drilling process can be effectively reduced, the service life of the drill bit is prolonged, and the costs of drilling a well and breaking the rock are reduced.

The invention relates to a liquid phase discharge plasma impact wave PDC drill bit, which comprises a drill bit body. Drill bit cutter wings are arranged at one end of the drill bit body at intervalsin the circumferential direction, cutting teeth capable of mechanically cutting rock are arranged on the drill bit cutter wings, and a well drilling liquid flowing channel is formed in the center of the drill bit body; a center water hole communicating with the well drilling liquid flowing channel is formed in the center of one end of the drill bit body in a penetrating mode, a center impact wavegenerator is arranged in the center water hole in a connected mode, and an edge water hole communicating with the well drilling liquid flowing channel is formed in the side wall of one end of the drill bit body in a penetrating mode; and an edge impact wave generator is arranged in the edge water hole in a connected mode, and the center impact wave generator and the edge impact wave generator areused for generating liquid phase discharge plasma impact waves capable of impacting and crushing the rock. According to the liquid phase discharge plasma impact wave PDC drill bit, by taking rock crushing through the liquid phase discharge plasma impact waves as the main and mechanical rock crushing as the auxiliary, rock drillability is improved, the well drilling speed is increased, the rock crushing efficiency of hard strata is improved, the service life of the drill bit is long, and use and promotion are facilitated.

The invention discloses a lithology identification based mechanical-hydraulic combined rock breaking TBM real-time tunneling method. The method comprises the following steps that mechanical-hydrauliccombined rock breaking cutterhead TBM construction prepares are made; construction is started; TBM cutterhead propulsion is carried out; a mechanical cutter pushes and presses the face; a module detection hobbing cutter device applies detection pushing force; cutter laser ranging and timing and sensor lithology index feedback are carried out; a TBM rear end control processor processes information;a TBM cutterhead control center makes responses; a hydraulic cutting hobbing cutter acquires and adjusts parameters; and a TBM cutterhead breaks rock. The method has the advantages of being energy-saving, efficient, high in rock breaking efficiency and small in cutterhead consumption.

The invention relates to a well drilling method and device combining heat energy and mechanical energy. The well drilling device comprises a fuel tank (1), a two-channel connector (6), a compressor (10), a drill bit (13) and a drill rod (9). Two ends of the drill rod (9) are connected with the two-channel connector (6) and the drill bit (13) respectively; the two-channel connector (6) comprises a housing (38), a fuel channel and an air channel, the fuel channel and the air channel are arranged inside the housing (38), the fuel tank (1) is connected with the fuel channel, and the compressor (10) is connected with the air channel; the drill bit (13) comprises a drill head body (18), an upper connector (16) arranged at the upper end of the drill bit body (18) and drill bit cutting teeth (21) arranged at the lower end of the drill bit body (18). The well drilling method and device combining the heat energy and the mechanical energy can achieve rock breaking by combining the combustion heat energy with the mechanical energy to significantly improve the rock-breaking efficiency; besides, well walls can be vitrified through the combustion heat energy to become smooth and hard, casing running and well cementation can even be omitted, and the drilling costs can be saved remarkably.

The invention relates to a hydraulic pulse type churn screw drill for accelerated drilling of deep wells and ultra-deep wells in petroleum and natural gas industry and solves the problems that drilling a hard formation is difficult and mechanical drilling speed is low during drilling process. According to the technical scheme, the hydraulic pulse type churn screw drill is characterized in that the upper end of a screw stator is in threaded connection with the lower end of an upper connector, the lower end of the screw stator is in threaded connection with the upper end of a universal shaft shell, a screw rotor is disposed in an inner cavity of the screw stator, the upper end of a universal shaft is in threaded connection with the lower end of the screw rotor, the lower end of the universal shaft is in threaded connection with the upper end of an upper shaft body, the upper end of a guide shell is in threaded connection with the lower end of the universal shaft shell, the lower end of the guide shaft is in threaded connection with the middle of a lower shell, an upper cylinder of a transmission piston is in clearance fit with the middle of an inner cavity of the upper shaft body, and the lower end of the transmission piston is in threaded connection with the middle of the lower shell. The hydraulic pulse type churn screw drill can generate rock-breaking torque and provide high-frequency axial impact, thereby improving bit's rock-breaking efficiency and mechanical drilling speed; the hydraulic pulse type churn screw drill is simple in structure and has few vulnerable parts.

The invention provides mine ultrasonic rock-breaking equipment. The mine ultrasonic rock-breaking equipment comprises an ultrasonic generation module, an amplitude rod, a hollow connecting piece, a free-mass sphere, an ultrasonic drill pipe. The tail end of the amplitude rod is fixed to the front end of the ultrasonic generation module, the two ends of the hollow connecting piece are connected with the amplitude rod and the ultrasonic drill pipe separately, and the free mass sphere can oscillates back and forth in the hollow connecting piece. According to the mine ultrasonic rock-breaking equipment, an ultrasonic driver is driven by the high-frequency alternating current excitation voltage with ultrasonic frequency to produce vertical vibration with ultrasonic frequency according to the inverse piezoelectric effect, and the high-frequency vibration is transmitted to the rock surface through the amplitude rod, the free mass sphere and the ultrasonic drill pipe to generate high-frequencydynamic loads with ultrasonic frequencies to break rocks. Ultrasonic vibration has the characteristics of high frequency, high vibration and low amplitude, so that the cumulative growth speed of rockdamage is higher than that caused by general fatigue load, the time for rocks to reach the fatigue failure limit is short, and the rock-breaking efficiency is higher.

The invention discloses a controllable electromagnetic drive type impact-scraping and cutting composite drill bit and a method. The controllable electromagnetic drive type impact-scraping and cuttingcomposite drill bit comprises a drill bit body, a fixed cutting structure, an impact cutting structure and a power supply energy storage structure, wherein the fixed cutting structure and the impact cutting structure are arranged on the drill bit body; the impact cutting structure comprises an impact guiding pipe, a punch and impact cutting teeth, the impact cutting teeth are fixedly connected tothe tail end of the punch, the punch slides or performs sliding impact relative to the drill bit body; the power supply energy storage structure comprises a rotatable impeller, a motor, a capacitor and a control chip for controlling the discharging frequency, and a matched using method is provided. Compared with a general PDC drill bit, rock can be pre-crushed, the rock crushing efficiency is improved, the abrasion rate of the teeth is slowed down, and the stick-slip effect of the PDC drill bit in the drilling process can further be relieved. Compared with traditional impact type drill bits, the controllable electromagnetic drive type impact-scraping and cutting composite drill bit can control the impact frequency and automatically store energy, the structure is simple, and the well drilling and rock crushing efficiency can be effectively improved.

The invention relates to the technical field of PDC drill bits, in particular to a PDC drill bit suitable for a double-pendulum speed-increasing drilling tool. The PDC drill bit comprises a drill bitbody, cutting blades, main cutting teeth, reversed hole teeth, edge teeth, gauge teeth and rock breaking tine teeth; the cutting blades are circumferentially distributed at intervals around the drillbit body, the gauge teeth are distributed on the outer side faces of gauge parts of the cutting blades, the rock breaking tine teeth are distributed on the outer side faces of the noses of the cuttingblades, and the tooth tops of the rock breaking tine teeth are higher than those of the main cutting teeth. The PDC drill bit suitable for the double-pendulum speed-increasing drilling tool has the advantages that the rock breaking tine teeth are arranged to pre-break a stratum during drilling and release formation stress, thereby improving the rock breaking efficiency of the main cutting teeth and protecting the main cutting teeth to reduce abrasion; the PDC drill bit is suitable for the double-pendulum speed-increasing drilling tool, so that the combination of the PDC drill bit and the double-pendulum speed-increasing drilling tool can improve the entire drilling speed, stability is kept in a vertical well section, the wellbore quality is good, the drill bit is not stuck easily, the inhibition effect of the drilling tool on drill bit eddy can be also improved, and the purpose of assisting in speed increasing is achieved.

Disclosed a combined rock-breaking TBM tunneling method in complex strata for realizing three-way force detection, comprising the steps of preparing a combined mechanical-hydraulic rock-breaking cutter head for TBM construction; starting construction; advancing the combined mechanical-hydraulic rock-breaking cutter head; pushing and pressing against a tunnel face by a mechanical cutter tool; subjecting a three-way force detection cutter to squeezing forces; feeding back three-way force data by a three-way force sensor; processing information by a TBM back-end control processor; obtaining a value of rock-cutter contact angle φ; feeding back parameter information to a TBM cutter head control center by a lithology index center; responding by the TBM cutter head control center, obtaining and adjusting parameters by the mechanical cutter tool equipped with the three-way force sensor; and breaking rock by the combined mechanical-hydraulic rock-breaking cutter head. The method disclosed is energy-saving and efficient, and has high rock-breaking efficiency.

The invention discloses a percussive-rotary drilling tool which is used for providing reciprocating percussion and torque simultaneously during well drilling and can improve drilling efficiency and mechanical drilling rate, and reduce drilling cost. The technical scheme is that: a flow controller is arranged in an upper joint and an automatic valve device below the flow controller is connected with an inner hole of the upper joint through a thread; the automatic valve device, a shell, and an upper end face of a central spindle form a cavity with a variable volume; a flow channel is formed in the middle of the central spindle; a sealing member is arranged between an outer wall of the upper end of the central spindle and an inner wall of the shell; a thread of the lower part of the central spindle is used for connecting a drill bit; and a rotation device is provided with a spiral groove, cylinder followers of the rotation device are arranged on the central spindle, and the bottom of the rotation device is provided with an unidirectional lower pawl surface which is matched with an unidirectional upper pawl surface on the upper part of a bearing joint. The percussive-rotary drilling tool has a simple structure, is suitable for well repairing and drilling operation, and can provide torque and percussion energy, reduce the phenomenon that the drilling bit is sticky and slippery, accelerate mechanical drilling rate, improve drilling efficiency and reduce drilling cost.

The invention discloses a high-pressure-water cavitation rock breaking TBM and a construction method thereof. The TBM comprises a main machine. A cutter disc is arranged at the front end of the main machine and provided with pulse cavitation nozzles. The pulse cavitation nozzles are connected with a high-pressure-water system. A vacuum sewage discharge system is connected to the rear portion of the cutter disc. The cutter disc is connected with a main driver arranged in the main machine. A slag inlet is formed in the front end face of the cutter disc. A muddy water bin is arranged on the rearportion of the cutter disc. A slag outlet is formed in the lower portion of the muddy water bin and connected with the vacuum sewage discharge system. According to the TBM, the multiple pulse cavitation nozzles are reasonably arranged on the cutter disc, the high pressure water forms cavitation water jet flow after passing through the cavitation nozzles and directly impacts, corrodes and crushes rock, full-fracture-surface pure water rock breaking is achieved, the rock breaking efficiency is improved, and the construction risk is reduced. According to the TBM, non-contact type rock breaking isadopted, torque and total thrust of the main driver can be reduced effectively, power of the main driver is reduced, meanwhile, vibration of the TBM is reduced, and abrasion and replacement of cutters are reduced.

Disclosed is a drilling and rolling combination cutter disc structure for a TBM (tunnel boring machine). The drilling and rolling combination cutter disc structure for the TBM is characterized in that a working face of the drilling and rolling combination cutter disc structure is a spherical face which is protruded outwards, a plurality of hob sets different in radius are arranged on the working face and around the center of a cutter disc body, each hob set comprises a plurality of disc type hobs, drilling machine operation holes are formed between each two adjacent disc type hobs, a rail and a rock drilling machine which slides along the rail are arranged on one side of the cutter disc body and along the direction opposite to the TBM work direction, drill bits of the rock drilling machine can stretch out or retract through the drilling machine operation holes, soil and stone discharge holes are located between each two adjacent hob sets and used to discharge excavated soil and stone from the soil and stone discharge holes, and the other rock drilling machine is arranged at the center of the cutter disc body in the same mode. According to the drilling and rolling combination cutter disc structure for the TBM, the rock drilling machines are added on the cutter disc body, and therefore a combination of the drilling machines and the hobs is achieved, rock breaking efficiency is improved, torque of the cutter disc body and the disc type hobs is reduced, and the excavation area of a cutter disc is increased by improving the structure of the cutter disc body and optimizing the arrangement mode of the hobs.

The invention discloses a hydraulic power-mechanical TBM cutter head combined rock breaking method. The hydraulic power-mechanical TBM cutter head combined rock breaking method comprises the steps that a combined rock breaking TBM cutter head is installed, and the combined rock breaking TBM cutter head is aligned to the position of a to-be-excavated grotto; a TBM outer machine frame is fixed, anda combined rock breaking TBM is started and is enabled to tunnel forwards for a stroke; and the referred steps are repeated, the next stroke operation is started until tunneling is carried out to a specified distance, and excavation of the grotto is completed. The hydraulic power-mechanical TBM cutter head combined rock breaking method has the advantages of suitable penetration degree and high rock breaking efficiency. The invention further discloses the hydraulic power-mechanical combined rock breaking TBM cutter head adopted by the hydraulic power-mechanical TBM cutter head combined rock breaking method. The invention further discloses a hydraulic power-mechanical combined rock breaking TBM device adopted by the hydraulic power-mechanical TBM cutter head combined rock breaking method.

The invention relates to the field of petroleum and natural gas drilling equipment, in particular to a drilling speed increasing device with a composite drill bit. According to the technical scheme, the drilling speed increasing device with the composite drill bit comprises a multifunctional connector, the multifunctional connector is connected with a shell and a screw driving assembly, and the screw driving assembly is sleeved with the shell; the end, away from the multifunctional connector, of the shell is connected with a reaming drill bit body, and the end, away from the multifunctional connector, of the screw driving assembly is connected with a pilot drill bit body; water holes are formed in the reaming drill bit body and the pilot bit body; and the reaming drill bit body is a diamond drill bit or a roller bit, and the pilot bit body is a diamond drill bit or a roller bit. According to the drilling speed increasing device, the pilot bit body can achieve two-stage speed increasing, accordingly the overall drilling speed is increased, and the problems that a pilot bit of an existing two-stage drilling device is low in rotation speed and not obvious in drilling speed increasing are solved.

The invention relates to a heading machine cutting part and application thereof. The heading machine cutting part includes a supporting frame, cutting head cutting groups and diamond saw blade cuttinggroups, the four corners of the supporting frame are provided with fixing devices, one side of the supporting frame is provided with a horizontal moving mechanism, and the cutting head cutting groupsand the diamond saw blade cutting groups are arranged on the horizontal moving mechanism. According to the heading machine cutting part and application thereof, combination of the two groups of the diamond saw blade cutting groups and the two groups of the cutting head cutting groups is used for combined rock breaking, can be carried out synchronously, and the efficiency of rock breaking is effectively improved; and the fixing devices are introduced, a spiral drill pipe is used for drilling into the rock wall, the entire cutting part is fixed, stability in the working process of the cutting part is improved, and the fact that vibration of the cutting part caused by acting force of cutting and rock breaking by cutting heads, and consequently diamond saw blades are damaged can be effectively avoided.

The invention discloses a gear floating type raise-boring machine. The gear floating type raise-boring machine comprises a base bracket, a telescopic driving mechanism, a rotating driving mechanism, adrill pipe and a drill bit. The bottom of a cutter holder is installed on a cutterhead through a rotating movable mechanism. A hob comprises a carrier piece, a plurality of floating gears and a plurality of elastomers. The carrier piece is of a circular-table-shaped structure. A plurality of clamping-connecting sliding grooves are formed around the carrier piece and distributed evenly to form anannular structure in a surrounding mode. The multiple elastomers are installed in the clamping-connecting sliding grooves. The multiple floating gears are connected into the clamping-connecting sliding grooves in a clamped mode and abut against the elastomers in a pressing mode to make the elastomers be compressed under force. The outer side of the periphery of the carrier piece is evenly connected with the multiple floating gears in a clamped mode. According to the gear floating type raise-boring machine, the floating gears can be matched with the broken rock surface, so that the rock breaking efficiency and smoothness are improved.

The invention discloses a gear-wheel composite drill bit with an impact cutting structure and belongs to the field of rock-breaking tools for drilling equipment of petroleum, natural gas, mining engineering, building foundation project construction, geology, hydrography and the like. The gear-wheel composite drill bit comprises a drill bit body and a gear-wheel cutting structure, wherein the drill bit body is provided with an impact cutting structure; the impact cutting structure comprises a force transmitting mechanism which transmits impact force and an impact cutting gear; the impact cutting gear is fixedly arranged on a punch at the tail end of the force transmitting mechanism; and the punch can slide or glidingly impact relative to the drill bit body in the impact force transmitting direction. Compared with the traditional gear-wheel drill bit, the gear-wheel composite drill bit is higher in rock-breaking efficiency and longer in the service life of the drill bit, can effectively reduce drilling cost, and is particularly suitable for harder and difficultly drilled grounds.

The invention provides a modular jet-machinery combined rock breaking cutter used for a rock breaking experiment platform. The technical problems that at present, a jet and hob coupling action mechanism and the optimal rock breaking combination are unknown are solved. The cutter comprises a cutter holder, first cutter holder cushion plates, second cutter holder cushion plates, a hob cutter moduleand a jet cutter module, wherein the cutter holder is provided with the hob cutter module and the jet cutter module, and the relative position of the jet cutter module and the hob cutter module is adjustable; the lower end of the cutter holder is movably provided with the first cutter holder cushion plates and/or the second cutter holder cushion plates, and an included angle is formed between theupper surface and the lower surface of each first cutter holder cushion plate; and the upper surface and the lower surface of each second cutter holder cushion plate are horizontal, through splicingmatching of the plurality of first cutter holder cushion plates and/or the plurality of second cutter holder cushion plates, an inclination and a height of a joint cutter are adjusted to simulate a hob at the set position on a cutter disc, and finally the problem that the coupling effect of jet and the hob is solved.

The invention discloses a tunneling machine adopting a laser to break rocks and a tunneling method of the tunneling machine. The problems that as the strength of the rocks increases, abnormal wear andthe replacement frequency of a hob increase, subsequently, the shield tunneling efficiency is lowered, and the tunneling cost is increased are solved. The tunneling machine comprises a tunneling machine main engine, a cutterhead is arranged on the tunneling machine main engine, and laser generating devices are arranged on the cutterhead. According to the tunneling machine adopting the laser to break the rocks and the tunneling method of the tunneling machine, traditional metal cutting tools are replaced with a laser and water cooling principle, the efficiency of rock breaking is greatly improved, meanwhile, when tunnelingthe serious uneven geology such as softness-up and hardness-down, the difficult problem that the traditional metal cutting tools are extremely prone to being abnormally damaged is solved, thus the cutting tool cost is saved, and the risk of tool replacing is lowered; and a mode of suspension cutting rock breaking or extruding rock breaking is adopted, the efficiency of excavation is greatly improved, and the excavation cost is lowered.

The invention discloses a combined drill bit combining a PDC drill bit and a roller bit for joint rock breaking. The combined drill bit combining the PDC drill bit and the roller bit for the joint rock breaking is characterized in that the combined drill bit comprises the PDC drill bit and the roller bit which are connected to each other; the PDC drill bit comprises a round steel body, a plurality of blade sets and a plurality of grooves are milled in the side face of the round steel body, each blade set comprises a first blade and a second blade, and each first blade and the corresponding second blade are line-shaped connection blades; the roller bit comprises a plurality of bit legs arranged in the grooves, bit cone sets are arranged on the lower portions of the bit legs, and the bit cone sets correspond to the blade sets one to one; each bit cone set comprises a first bit cone and a second bit cone, and bit cone conical face breaking faces and bit cone circular-arc breaking faces are formed on the outer sides of the first bit cones and the outer sides of the second bit cones respectively; a roller bit oil storage sealing bearing system and a hydraulic jet system are arranged on the round steel body. The combined drill bit combining the PDC drill bit and the roller bit for the joint rock breaking improves drill bit rock breaking efficiency, and the service life of the drill bit is ensured; furthermore, the performance measure of well drilling is good, and the cost of the well drilling is lowered.

The invention discloses a clamping type raise boring machine. The clamping type raise boring machine includes a base support, a telescopic mechanism, a drilling rod and a drilling bit. A telescopic groove and a connecting channel are respectively disposed at upper and lower sides of an inner ring sleeve, one end of the T-shaped telescopic rod sequentially passes through a telescopic groove and theconnecting channel and is then fixed on an outer side surface of a clamping plate, the other end of the T-shaped telescopic rod is limited in the telescopic groove, upper and lower ends of a connecting shaft are respectively inserted into T-shaped insertion clamping grooves of the clamping plate through T-shaped insertion clamping bars, so an outer ring sleeve and the inner ring sleeve can move up and down along the T-shaped telescopic rod. The clamping type raise boring machine is advantaged in that floating is more stable.

The invention relates to a downhole pressurization auxiliary rock breaking tool and belongs to the technical field of oil and gas downhole operation tools. The downhole pressurization auxiliary rock breaking tool comprises a conversion joint, an upper shell, a lower shell, a turbine spindle, a rotating shaft and a hydraulic cylinder; the turbine spindle in mounted in the upper shell, and the rotating shaft is mounted in the lower shell; the hydraulic cylinder is fixedly mounted on the position, on one side of the rotating shaft, in the lower shell, and the hydraulic cylinder and the rotating shaft are slidably connected; and a magnetic reciprocating mechanism is mounted on the position, between the hydraulic cylinder and a thrust bearing, on the rotating shaft through a sealing block. Thedownhole pressurization auxiliary rock breaking tool is simple in structure, stable in pulse and free of harmful impact; the problems that an existing downhole pressurization device is complex in structure, large in manufacturing difficulty and short in life, and harmful impact exists are solved; and the service life of the pressurization auxiliary rock breaking tool is effectively prolonged, thereliability of the pressurization auxiliary rock breaking tool is effectively improved, the rock breaking efficiency of a drill bit is improved, thus the well constructing cycle is shortened, and thedrilling cost is reduced.