299results about "Disloding machines" patented technology

The invention relates to the technical field of mine underground equipment, in particular to crawler-type high-gas coal seam drilling equipment based on a double-channel drill rod, which comprises a walking chassis, the double-channel drill rod, a hydraulic slotting system and a negative pressure deslagging device. Crawler-type composite drilling equipment is provided, process integration is carried out through breakthrough of three core technologies, directional drilling (a diamond drill bit and a spiral groove drill rod), hydraulic slotting and negative pressure deslagging are integrated into single equipment, the working procedure switching time is shortened, synchronous slotting and deslagging operation is achieved through a double-channel drill rod, and the working efficiency is improved. The problems of energy consumption and blockage are solved; and meanwhile, gas accidents are prevented.

The invention discloses a rock burst ultra-deep hole blasting unloading wave absorption coupling prevention method for a steeply inclined coal seam, and belongs to the technical field of coal mining, and the method comprises the following steps: step 1, determining an unloading target rock stratum where a working face top plate and / or bottom plate stress concentration area is located in the steeply inclined coal seam; 2, determining a wave absorbing target rock stratum between the unloading target rock stratum and a roadway on the corresponding side of the working face of the steeply inclined coal seam; 3, arranging a plurality of unloading blast hole groups in the roadway; step 4, arranging a wave absorbing blast hole group at the position where the unloading blast hole group is arranged in the roadway; 5, all the wave absorbing blast holes are detonated, and all the unloading blast holes are detonated; and 6, after blasting is completed, the near-surface surrounding rock of the roadway on the corresponding side subjected to blasting serves as a supporting bearing layer for combined supporting. According to the invention, a three-level cooperative control mechanism of source unloading, propagation weakening and terminal bearing is realized, and steeply inclined coal seam clamping type roof and floor rock burst disasters are prevented fundamentally.

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 application discloses a coal rock anti-burst method of large-range seam forming by remote controllable shock wave and hydraulic fracturing, and comprises the following steps: step one, detecting and recording the stress concentration degree of target coal seam or rock stratum; step two, drilling; step three, withdrawing the hollow drill rod, arranging the discharge electrode connected with the cable at the front end of the hollow drill rod, and sending the discharge electrode into the drill hole through the hollow drill rod; step four, sealing the hole by using a hole sealer and performing hydraulic fracturing; steps five to seven, completing multiple repeated electric pulse discharge operations; and step eight, testing the pressure relief effect of the coal seam or rock stratum. The method uses the drilling cuttings method, high-pressure hydraulic fracturing and high-voltage electric pulse to perform large-range cracking and pressure relief on the coal rock stratum, changes the stress state of the coal rock stratum, and reduces the stress concentration degree, so that the anti-burst purpose is achieved. The method is mainly applied to deep coal rock body tunneling roadways and coal mining working faces containing coal rock body impact tendency.

The utility model discloses a rock splitter which comprises a cylinder body and a sliding cavity arranged on the lower portion of the cylinder body, two splitting blocks are connected in the sliding cavity in a sliding mode, plugging plates fixedly connected with the cylinder body are arranged on the two sides of the sliding cavity, and a telescopic wedge block is tightly attached between the splitting blocks. A plurality of oil outlet holes are formed in the contact surfaces of the corresponding wedge blocks and the splitting blocks, the oil outlet holes communicate with oil conveying channels in the splitting blocks, the upper portions of the oil conveying channels are connected with oil conveying branch pipes capable of synchronously moving with the splitting blocks, the oil conveying branch pipes extend to the outer portion of the sliding cavity and are connected with oil conveying hoses, and the two oil conveying hoses are converged to be connected with an oil conveying main pipe; the oil conveying main pipe is communicated with the automatic oil filling pump. According to the utility model, the contact surface between the splitting block and the wedge block is provided with the oil outlet hole, the oil conveying channel, the oil conveying hose and other structures which are communicated with the automatic oil filling pump, so that the lubricating oil does not need to be manually smeared, the tedious process and workload are reduced, the working efficiency is improved, and meanwhile, the safety risk caused by accidental starting of equipment possibly caused by manual smearing is avoided.

The invention belongs to the field of rock burst prevention and control coal mining methods, and particularly relates to a roof-cutting pressure-relief coal mining method under the stratum condition of a deeply-buried sandstone group. Comprising the following steps: respectively constructing detection drill holes inside and outside a first mining working face, and checking an interface in a stratum in a hydraulic pressure test mode so as to accurately determine a key layer. On the basis, on the basis of gob-side entry retaining, roof cutting drill holes are creatively constructed in a roof cutting special roadway and a transportation roadway correspondingly, so that roof cutting work is conducted on key layers in a bent sinking zone rock stratum, a water flowing fissure zone and a caving zone rock stratum in a roof; therefore, the suspended roof length of a part of the water flowing fractured zone rock stratum and the caving zone rock stratum is reduced but still reserved, the supporting force needing to be borne by the gob-side entry retaining is reduced, and a sheltering space is provided for the gob-side entry retaining. The bent sinking zone rock stratum is subjected to vertical drilling top cutting, and a top cutting transition area is reserved, so that superposition of fracture of the bent sinking zone rock stratum and fracture of the water flowing fissure zone rock stratum can be reduced, and the stratum pressure needing to be borne by gob-side entry retaining is reduced to the maximum extent.

The invention discloses a hydraulic fracturing ground stress testing device and method, and relates to the technical field of hydraulic fracturing, and the hydraulic fracturing ground stress testing device comprises testing equipment. According to the hydraulic fracturing ground stress testing device and testing method, through the design of testing equipment, a water source enters the water pump pipe from the water inlet pipe, water flow is sprayed outwards from the nozzle in the water pump pipe, so that the hydraulic fracturing effect is achieved, the rotating mechanism is driven to rotate through flowing of the water flow, and the effect of cleaning the inner wall of a pipeline through friction is achieved; the rubber pipe is extruded by sliding the packing top block on the packing base, so that the rubber pipe is extruded and deformed to be attached to the surface of soil, the packing effect on a test part is achieved, the silica gel column is arranged in the rubber pipe, the silica gel column has a certain supporting effect and prevents a part from being concaved inwards and collapsed, and the rhombic film is arranged on the outer side of the rubber pipe, so that the rubber pipe is prevented from falling off. Therefore, surface friction force of components is increased, service life of the components is prolonged, and friction load is dispersed.

The invention discloses a near-driving working face high-pressure hydraulic fracturing advanced pressure relief anti-scour device which comprises a fracturing pipe, a plurality of fracturing holes are formed in the pipe wall of the fracturing pipe, a sealing bag frame used for separating the adjacent fracturing holes is further arranged on the outer wall of the fracturing pipe, a first inner guide pipe is installed on the inner wall of the fracturing pipe through a first through-flow ring frame, and self-adaptive fracturing nozzles are arranged in the fracturing holes; an oscillation mechanism is arranged on the outer wall of the inner conduit I; the perforation pipe is connected with the pipe cavity of the inner guide pipe I, a plurality of jet flow holes are formed in the pipe wall of the perforation pipe, and a temporary blocking mechanism for separating adjacent jet flow holes is further arranged on the outer wall of the perforation pipe.

The application discloses a soft coal seam acoustic wave penetration method, comprising the following steps: sampling the rock of one side rock stratum of the soft coal seam to be penetrated, obtaining the tensile strength and shear strength of the rock, the one side rock stratum being the coal seam roof or the coal seam floor; drilling a working borehole in the one side rock stratum; implementing impact in the working borehole; the impact wave generated by the impact cracks the rock stratum around the working borehole, the impact wave cracks the rock stratum, and the acoustic wave is formed after the impact wave attenuates, the acoustic wave is used for penetrating the soft coal seam, wherein the stress wave pressure entering the soft coal seam is lower than the tensile strength and shear strength of the rock. The application solves the problems that it is difficult to develop an effective high-strength sound source capable of being loaded to the coal seam and it is difficult to implement drilling in the soft coal seam in the prior art. The application converts the strong impact into high-strength acoustic wave by using the coal seam roof or the coal seam floor rock stratum, the high-strength acoustic wave is used for penetrating and exciting the coal seam, and the required acoustic wave can be obtained, and the gas desorption is promoted.

The invention discloses a low-sensitivity activator as well as a preparation method and application thereof, and belongs to the technical field of gas fracturing. Potassium perchlorate is used as an oxidizing agent of the low-sensitivity activator, flour is used as a combustible agent of the low-sensitivity activator, and the mass ratio of the potassium perchlorate to the flour in the low-sensitivity activator is (50-70): (10-20). The low-sensitivity activator provided by the invention has the advantages that the mechanical sensitivity, flame sensitivity and static sensitivity of the low-sensitivity activator are at extremely low levels, and the low-sensitivity activator has excellent stability and higher ignition temperature; related tests carried out according to the Program on Dangerous Goods Transport of the United National further show that the activator not only has remarkable gas production rate, but also shows extremely low sensitivity to shock waves, the insensitive characteristic of the activator is even superior to that of a conventional insensitive explosive, and practical application verification shows that the cracking effect of the activator is completely not lower than the level of a metal powder activator.

The invention aims to provide a mining process for recovering section coal pillars in a double-wing retreating type continuous mining and continuous filling mode, and belongs to the technical field of coal mining. Coal pillar resources of a working face section are completely recovered through three process steps of branch roadway tunneling, mining chamber stoping and lagging filling, coal resources are avoided, and the mining efficiency is improved. Especially, resource loss caused by scarce high-quality coal resources due to the fact that section coal pillars cannot be recycled is avoided, and the resource recycling rate is increased.

The invention provides a coal mine rock burst prevention method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring first monitoring data of a coal seam roof rock stratum, wherein the first monitoring data at least comprises a fracture event and micro-fracture distribution density of the coal seam roof rock stratum; determining that the rock burst risk exists in the coal seam roof rock stratum in response to the fracture event and the micro-fracture distribution density meeting the risk identification condition; at least one time of pressure relief treatment is conducted on the coal seam roof rock stratum, and different pressure relief agents are used in the at least one time of pressure relief treatment process; and second monitoring data of the coal seam roof rock stratum after pressure relief processing are obtained, and when the second monitoring data do not meet the risk identification condition, it is determined that rock burst risk prevention and control are completed. Therefore, according to the scheme, combined monitoring of various data can be achieved so that the rock burst risk can be accurately recognized, roof pressure relief is achieved through cooperative prevention and treatment of at least one time of pressure relief treatment, and therefore the pressure relief effect is improved.

Disclosed is a pre-split roof caving method based on the collaboration of foam fracturing and blasting for coal mines, including: S1, construction of a borehole; S2, preparation of a foam fracturing fluid; S3, fracturing; and S4, roof caving by blasting. Foam fracturing and blasting are combined, and a great many of fractures are generated in a roof rock stratum by foam fracturing, such that the strength of the roof rock stratum is reduced, a blasting space is provided for blasting, pre-caving of a roof is realized, and safety problems caused by difficult caving of a tight roof in a goaf are avoided.

The application provides a working face cut eye head-on fault processing method, comprising the following steps: obtaining related parameters of a hard rock fault in front of an extension direction of a working face cut eye and designing related parameters of a drill hole; determining a plurality of fracturing hole positions and a plurality of observation hole positions on the hard rock fault according to the determined related parameters of the drill hole, any one observation hole position is located between two adjacent fracturing hole positions, a plurality of hydraulic fracturing holes are drilled at the plurality of fracturing hole positions, and a plurality of fracturing observation holes are drilled at the plurality of observation hole positions; performing hydraulic fracturing processing on the hard rock fault; injecting fluid into the hydraulic fracturing holes, each hydraulic fracturing hole forms a hydraulic crack extending in a circumferential direction of the hydraulic fracturing hole under the action of the fluid, and the plurality of hydraulic cracks are interlaced in the hard rock fault; and performing cutting processing on the hard rock fault after hydraulic fracturing. By adopting the scheme, the problems of low efficiency, high cost and insecurity in the prior art for blasting processing of the hard rock fault can be solved.

The utility model provides a top cutting blasting CO instantaneous collecting and eliminating system which comprises an energy gathering pipe and an energy gathering pipe CO eliminating agent placed in the energy gathering pipe. A water curtain pipe; a CO eliminating agent spraying device; a CO instantaneous collection and elimination device; a CO monitoring device; during blasting, the energy gathering pipe CO eliminating agent can perform in-situ elimination on part of CO; the rest CO passes through the water curtain pipe and the CO eliminating agent spraying device, and is collected and released in the CO instantaneous collecting and eliminating device; the CO monitoring device monitors the release concentration of the gas treated by the CO instantaneous collecting and eliminating device, and it is guaranteed that the concentration of harmful gas in the roadway is within a safe range. According to the system, CO generated after energy-gathered top cutting blasting in the gob-side entry retaining project can be reduced to a safe range, it is guaranteed that the CO concentration in a roadway does not exceed the limit after blasting, monitoring and early warning can be conducted on the CO concentration in the roadway in real time, and potential safety hazards of workers are greatly reduced.

This invention relates to the field of coal mining technology and discloses a method, equipment, and medium for coordinated pressure relief and support of closely spaced coal seams. The method includes: constructing pressure relief holes in the roof and floor of the roadway to obtain roof fracturing holes and floor fracturing holes, respectively; constructing variable-diameter pressure relief holes in the roadway using a pre-constructed variable-diameter pressure relief drill bit for the sidewall coal seam to obtain sidewall variable-diameter pressure relief holes; depressurizing the roadway based on the roof fracturing holes, floor fracturing holes, and sidewall variable-diameter pressure relief holes; and installing anchor bolts and grouting in the roof fracturing holes, floor fracturing holes, and sidewall variable-diameter pressure relief holes after pressure relief is completed to achieve full-section anchor grouting support. This invention can transform the pressure relief channel into a strong support structure, organically combining the pressure relief zone with the reinforced support zone to form an integrated and coordinated pressure relief and support system for coal mining.

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 invention discloses a rock burst mine main roadway protection coal pillar three-dimensional pressure relief and top plate weakening method. The method comprises the following steps that 1, the range, affected by mining, of a main roadway and the key weakening layer position of a top plate are determined; 2, a directional drilling construction position is selected according to the width of the protection coal pillar; 3, according to the construction position, the parallel top plate directional drilling arrangement mode is designed; 4, hydraulic fracturing is carried out to form a continuous roof weakening zone; and 5, grouting filling of the fractured fractures and the goaf is executed. According to the rock burst mine main roadway protection coal pillar three-dimensional pressure relief and roof weakening method, the problems that an existing roof control technology mostly focuses on the interior of a working face, scientific limitation on the depth of a weakening horizon is lacked, and roof leakage is caused due to the fact that horizon selection is too low are solved.

The present invention relates to a system (1000) and method for dispensing primers into blast holes in mining sites comprising a priming vehicle (100) and priming equipment (200), which is transported by the priming vehicle (100), being said vehicle (100) capable of operating autonomously or semi-autonomously and by remote control; wherein the priming equipment (200) comprises: at least two trays (250, 251) for placing reel elements (220); at least two dispensers (260, 261) for booster-type explosive devices (210), a gantry crane (230); a system for positioning detonators inside the booster-type explosive device; an antenna positioner; a cable brake dispenser (270); and a cable unwinding system (290). with a hole meter to inspect the holes before loading the same.

The present invention relates to an integrated raise caving mining method for mining deposits in rock mass comprising: developing at least one raise in the rock mass, developing a drawbell in the rock mass, wherein at least a portion of the drawbell is excavated from the at least one raise, initiating caving through undercutting, wherein at least a part of an undercut is created by gradually expanding the drawbell in upwards direction by excavation, developing at least two drawpoints into the drawbell, wherein the drawpoints are developed from drifts arranged on different levels and progressively drawing fragmented rock from the at least one drawbell through the drawpoints. The present invention also relates to use of an integrated raise caving mining method for mining deposits. The present invention also relates to an integrated raise caving mining infrastructure, a machinery, a control system of an integrated raise caving mining infrastructure, and a data medium.

The invention relates to the technical field of mining machinery, and discloses a high-efficiency drilling and splitting all-in-one machine which comprises a vehicle body, a handrail fixedly connected to the rear side of the upper end of the vehicle body, self-locking universal wheels fixedly connected to the four corners of the lower end of the vehicle body, an overturning mechanism arranged at the upper end of the vehicle body, a moving mechanism arranged in the overturning mechanism, and a lifting mechanism arranged at the front end of the moving mechanism. First transmission assemblies are arranged at the upper ends of the lifting mechanisms, a power mechanism is arranged on the upper side of the front end of the turnover mechanism, the two lifting mechanisms are symmetrically distributed on the two sides of the front end of the moving mechanism, a splitting mechanism is arranged at the front end of the lifting mechanism located on the left side, and a drilling mechanism is arranged at the front end of the lifting mechanism located on the right side; second transmission assemblies are arranged on the two sides of the upper end of the vehicle body, auxiliary supporting assemblies are arranged on the two sides of the lower end of the vehicle body, and the splitting mechanism and the drilling mechanism are integrally arranged on the moving mechanism, so that rock can be conveniently crushed during mining, and the working efficiency is improved.

The invention relates to the technical field of core drilling, in particular to a mineral exploration drilling core sample splitting device which comprises a fixing mechanism detachably connected with a moving table, the fixing mechanism comprises a box body, the box body is detachably connected with the moving table, two lantern rings are arranged in the box body, and sealing plates are fixedly connected in the two lantern rings in a sleeved mode. T-shaped guide grooves are formed in the centers of the adjacent sides of the two closing plates. According to the invention, the rock core is placed at the positioning mechanism, the rock core is fixed by the positioning mechanism, and the rock core is surrounded by the positioning mechanism, so that the fixing effect on the rock core is improved, the periphery of the rock core is coated with the filler by the fixing mechanism, and the rock core and the filler are cut by the cutting equipment; when the rock core with cracks or formed by splicing is slit, the situation that rock core chips splash during cutting can be reduced through the filler, the situation that the rock core is broken is reduced, even if the rock core is broken, the rock core can be limited to the original position by the filler, and the integrity of the slit rock core is improved.

This invention provides a multi-point discharge high-voltage pulse electrode device and its usage method. The device includes a positive electrode and a negative electrode; a positive insulating sleeve is fitted around the positive electrode, an electrode insulating component is fitted around the positive insulating sleeve, and a negative electrode is fitted around the electrode insulating component; the upper end of the positive electrode is connected to a positive connector, which is connected to the positive coaxial cable of a high-voltage pulse power supply; a negative fixing ring is fitted on the outer wall of the negative electrode, which is connected to a negative connector, which is connected to the negative coaxial cable of the high-voltage pulse power supply; the positive electrode can move up and down relative to the electrode insulating component along the axial direction. This invention achieves flexible configuration of the number of discharge points and the superposition effect of stress waves inside the rock, thereby significantly expanding the breaking range of a single pulse and improving rock breaking efficiency.

The utility model relates to the technical field of hydraulic fracturing under a mine, and discloses a deep hole fracturing separator which comprises a first separation pipe, a second separation pipe and a third separation pipe, and a containing cavity is formed in the inner side wall of one end of the first separation pipe; the clamping piece and the sliding ball are embedded in the containing cavity, and the sliding ball is movably connected into the containing cavity and is arranged opposite to the clamping piece; one end of the second separation pipe extends into one end of the first separation pipe and is opposite to the clamping piece and the sliding ball, the clamping piece can move between a first position and a second position, the first separation pipe and the second separation pipe are in interference fit with the clamping piece at the first position, and the first separation pipe and the second separation pipe are in interference fit with the clamping piece at the second position. The sliding ball selectively extrudes the clamping piece to move towards the cavity wall of the containing cavity, so that the clamping teeth are separated from the second separation pipe. In the normal working state, the clamping piece is in interference fit with the first separation pipe and the second separation pipe, and when a fault occurs in the deep hole, separation of the first separation pipe and the second separation pipe can be rapidly achieved.

This invention relates to a wireless remote-controlled rock-breaking device and method for mine safety and environmental protection. The device includes: a control terminal capable of generating wireless control signals containing detonation timing information; a receiving and executing terminal wirelessly connected to the control terminal, capable of receiving and parsing the wireless control signals and sequentially generating multiple trigger signals according to the detonation timing information; a rock-breaking fracturing device disposed within a borehole in the target rock mass and electrically connected to the receiving and executing terminal; the rock-breaking fracturing device includes a non-recoverable tube, a phase change medium, and an excitation module; the phase change medium is sealed and stored in the non-recoverable tube, and the excitation module is disposed inside or at the end of the non-recoverable tube. After receiving a trigger signal from the receiving and executing terminal, the excitation module generates heat through an internal water source micro-heat pump, causing the phase change medium to undergo vaporization and phase change, and expand in volume, thereby fracturing the non-recoverable tube and breaking the surrounding rock mass. This device solves the problems of reliance on explosives, complex recovery processes, and inconvenient wired control in existing technologies.

The invention discloses a liquid carbon dioxide phase change fracturing system based on a self-regulation temperature control module, and belongs to the technical field of carbon dioxide phase change fracturing. The system comprises a liquid storage cavity, the self-regulation temperature control module, a two-stage safety pressure relief assembly and a release pipe; the self-regulation temperature control module comprises a flexible heating sheet, a temperature and pressure sensor and a temperature control sensor; an MCU is arranged in the temperature control sensor, and the MCU realizes three-stage temperature and pressure closed-loop regulation and control through a PID algorithm; the two-stage safety pressure relief assembly is composed of a constant-pressure rupture disc and an electromagnetic pressure relief valve and is in linkage with a multi-parameter monitoring signal to achieve abnormal pressure relief. According to the liquid carbon dioxide phase change fracturing system based on the self-regulation temperature control module, the problems that in the prior art, heating precision is low, safety protection is insufficient, and reusability is poor are solved, and the liquid carbon dioxide phase change fracturing system has the advantages of being accurate in temperature control, safe, reliable and low in cost and is suitable for fracturing operation of multiple scenes such as coal mines, metal mines and urban tunnels.

The application discloses a CO2 blasting intelligent control system and method based on digital twinning and edge computing, which deeply integrates wireless ad hoc network, radio frequency energy activation, edge computing collaborative decision and digital twinning modeling, realizes technical leap from preset triggering to intelligent closed loop, generates personalized parameters based on digital twinning model, combines edge computing real-time sensing and collaborative decision, reduces blasting vibration, improves ore crushing uniformity, reduces secondary crushing energy consumption, and improves blasting accuracy; radio frequency energy activation and electronic safety lock mechanism are adopted to realize zero live standby before detonation, eliminate early explosion risk caused by stray current and misoperation; the operator can complete all operations in a safe area one kilometer away, which essentially improves safety; through the wireless ad hoc network, the disconnection failure of wired connection is eliminated, intelligent collaborative detonation reduces the large block rate, the feedback optimization mechanism continuously reduces the unit consumption of explosives, and the comprehensive cost is reduced.

The utility model provides adjustable hydraulic ring geological rock crushing equipment, which relates to the technical field of rock crushing instruments and comprises a drill bit, a motor casing, a connecting block, a hydraulic press, a track rod, a bidirectional connector, a motor, a bottom connecting plate, a hydraulic column, a pressing nail and a handle. A hydraulic column is telescopically connected into the hydraulic press, a pressing nail is fixedly connected into a threaded hole in the bottom of the hydraulic column, an annular clamping groove is formed in the bottom of the hydraulic column, the top of a supporting sleeve A is connected into the annular clamping groove in the bottom of the hydraulic column in a clamped mode, a bottom connecting plate is fixedly connected to the bottom of the motor shell, and the two sides in the motor shell are each provided with a set of square grooves. The two sides of the motor are clamped and connected to the two sides of the interior of the motor shell through square blocks, a rotating shaft at the top of the motor is fixedly connected with a two-way connector, the crushing strength is adjusted through hydraulic related components to adapt to various types of rocks, time consumption and efficiency are improved through replacement of the components such as the two-way connector, and the angle is adjusted through a rail rod to adapt to multiple scenes; and the equipment adaptability and the operation stability are improved.

The invention discloses an ultrasonic focusing type deep rock breaking auxiliary device and a dynamic excitation method thereof. The device comprises a fastening propelling device, a rock inherent frequency detection system and an ultrasonic focusing excitation system which are arranged outside a drilling machine in a sleeving manner. Wherein the ultrasonic focusing excitation system is used for converging ultrasonic energy into a rock mass in front of a drill bit through a plurality of focusing acoustic lenses which are annularly arranged and can independently rotate. During working, the inherent frequency of a rock mass is detected firstly, ultrasonic waves with the corresponding frequency are generated, then the refraction angle of the ultrasonic waves is adjusted by dynamically rotating the focusing acoustic lens, a focusing point is made to move forwards synchronously along with increase of the drilling depth, and continuous and accurate presplitting of deep rock in front of a drill rod is achieved. The rock strength can be effectively reduced, the rock breaking efficiency is improved, meanwhile, the hole wall completeness is protected, and drilling tool damage is reduced.