1064 results about "Rock breaking" patented technology

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

The utility model provides an efficient drill bit for a mine drilling machine, which belongs to the technical field of drill bits and comprises a drill rod and a drill bit body arranged on the drill rod, a flange ring is mounted on the outer wall of one end of the drill rod, and a fixing seat is arranged at one end of the drill rod. According to the utility model, the crushing teeth arranged on the drill bit body are matched with the buffer springs, so that the positions of the crushing teeth can be effectively and automatically adjusted according to the hardness of external rocks and the drilling pressure, thereby reducing greater abrasion of the crushing teeth caused by hard rocks or abnormal loads, prolonging the service life of the drill bit, and improving the drilling efficiency at the same time; the spiral blade arranged outside the drill rod close to one end of the mounting seat continuously lifts the waste drilling fluid between the drill rod and the well wall in the process of synchronously rotating along with the drill rod, so that rock debris can be quickly and effectively removed from a drill hole, and the rock debris is prevented from being accumulated at the bottom of a drill bit to reduce the rock breaking efficiency; meanwhile, friction between the drill bit and rock is reduced, abrasion of the drill bit is reduced, and the drilling effect of the drill bit is improved.

The invention discloses an anti-static flexible fracturing rock breaking pipe based on a conductive oxygenating conduit, which comprises a flexible outer sleeve film with two closed ends and filled with an adsorbing material combustion agent, and further comprises the conductive oxygenating conduit penetrating into the flexible outer sleeve film from the top of the flexible outer sleeve film, an excitation wire and an exhaust pipe, the excitation wire is connected with an electric ignition device, and the electric ignition device is positioned in the flexible outer sleeve film and is in contact with the adsorption material combustion agent; the outer wall of the conductive oxygenation conduit is connected with a conductive unit. The invention further discloses a rock breaking method using the anti-static flexible fracturing rock breaking pipe based on the conductive oxygenating guide pipe, the conductive unit is arranged on the conductive oxygenating guide pipe and makes contact with the ground for conduction, static electricity generated in the filling process of liquid oxygen or pressurized high-purity liquid oxygen can be guided out and eliminated, and the anti-static flexible fracturing rock breaking pipe based on the conductive oxygenating guide pipe can be used for breaking rocks. Static electricity generated in the filling process of liquid oxygen or high-purity liquid oxygen with pressure can be conducted away and eliminated more efficiently, timely and continuously, and the risk of safety accidents caused by the static electricity is greatly reduced.

The invention relates to a composite interactive water-rich stratum efficient grooving ultra-deep underground diaphragm wall and a construction method. The construction method comprises the following steps of cement mixing pile groove wall reinforcement, guide wall foundation steel pipe pile built-in, guide wall novel template system installation, soft soil layer grab bucket grooving, karst cave drilling and grouting, rotary digging drill rock breaking and karst cave backfilling and double-wheel milling groove milling. The method has the beneficial effects that the groove wall is reinforced by the cement mixing piles, so that the groove wall is prevented from collapsing; the assembled drainage device is adopted, so that the construction efficiency is improved; the steel pipe piles are connected with the guide wall, so that the stability of the guide wall is improved; the steel plate groove is used as a guide wall template, so that the template turnover rate is improved; the open type steel box is placed on the groove opening, so that the risk of collapse of the groove wall is reduced; gaps and holes are blocked through drilling and grouting, then guide holes are rotationally excavated, and the karst cave is backfilled with plain concrete, so that the construction problem of grooving at the karst cave is solved; through the cooperation of the steel casing hoisting and positioning device, the construction efficiency of the rotary excavating guide hole is improved.

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

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

The invention discloses a comprehensive blasting method for controlling muck pile lumpiness and vibration in surface mine blasting, which comprises the following steps: S1, early-stage preparation and parameter calculation: investigating the geological condition of a mine in detail, and obtaining such information as rock physical and mechanical properties and joint fissure distribution; according to rock properties and mining requirements, blast hole parameters are determined; calculating initial delay detonation time according to a delay blasting rock breaking principle; s2, optimizing a charging structure: selecting a water medium interval charging structure, and determining the optimal unit consumption through theoretical analysis and field test; and based on the optimal unit consumption, establishing three-dimensional models of different water medium interval charging structures by adopting numerical simulation software, and selecting the optimal water medium interval charging structure. According to the method, the muck pile lumpiness is effectively controlled; the blasting vibration intensity is reduced; the blasting quality and the economic benefit are improved; the adaptability is high.

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

The invention belongs to the technical field of moon sampling, and provides a casing type laser-assisted coring drilling tool for a moon-based extreme environment, which comprises a drill bit, a base, a laser head, a drill rod, a coring pipe and a motor, the bottom of the base is rotatably connected with a drill rod. The bottom of the drill rod is fixedly connected with a drill bit. A coring pipe is coaxially arranged in the drill rod, and an annular cavity is formed between the outer side face of the coring pipe and the inner side face of the drill rod. A laser head is mounted in the base; the laser head is located above the annular cavity, and laser emitted by the laser head penetrates through the annular cavity and is emitted out of the drill bit. Aiming at the lunar-based environment, through the synergistic mechanism of mechanical rotary rock breaking and laser-assisted softening, the lunar rock is softened by means of laser energy, the mechanical cutting resistance of the drill bit is greatly reduced, and efficient and continuous coring operation is achieved; the key technical problems that a traditional drilling tool is difficult in space arrangement, low in efficiency and the like are solved, and the efficiency of the lunar geology coring task and the rock sample fidelity are remarkably improved.

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

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

According to the impact-cutting composite rock breaking hydraulic system and method for the mining heading machine, hydraulic damping and impact hammer collaborative operation are integrated, and the problems that a traditional heading machine is low in rock breaking efficiency, poor in stability and insufficient in adaptability are solved. The system comprises a cutting arm hydraulic damping system and an impact hammer hydraulic impact system, and multi-parameter closed-loop regulation and control are achieved through a controller. The device is characterized in that a double overflow protection mechanism is adopted, a proportional overflow valve and an external control overflow valve cooperate with each other, a hydraulic control one-way valve is combined for compensating an oil path, and the pressure difference of a hydraulic cylinder is dynamically kept stable; the impact hammer system adjusts the pressure of an energy accumulator through a proportional pressure reducing valve and is matched with a hydraulic control switch valve to realize variable impact energy control; based on feedback of a vibration sensor and a pressure sensor, damping and impact parameters of the cutting arm are adjusted in a self-adaptive mode through a nonlinear algorithm, and intelligent rock breaking operation under different rock stratum hardness is achieved. According to the system, the impact resistance stability, the rock breaking efficiency and the operation intelligence level of the heading machine are remarkably improved.

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

The invention relates to the technical field of tunnel engineering, in particular to a shield tunneling machine cutterhead cutting parameter decision-making method. According to the method, comprehensive and comprehensive stratum stress characterization and rock-soil cutting flow characterization are obtained by establishing cutterhead rock breaking stress models of various stratums, and final cutterhead parameters are intelligently obtained based on a multi-objective optimization model, a digital twin model and a neural network model in the form of establishing a database. According to the technical scheme, a reliable result can be obtained based on objective data, the representation capability of the finite element model can be expanded, and the credibility is improved.

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

The invention discloses underwater rock drilling and splitting integrated equipment and a working method thereof, and relates to the field of underwater rock breaking. The equipment comprises a bearing structure, a drilling unit, a splitting unit, a positioning and hole aligning system and a connecting rod; the drilling unit carries out drilling operation, the position of the drilling unit and the position of the splitting unit are rapidly switched on the same equipment through the station switching mechanism, the splitting unit can be aligned to the drilling position of the drilling unit, and the positioning and hole aligning system guarantees that a splitting rod is accurately inserted into a drilled hole. Through a non-blasting drilling and splitting mode, vibration / noise pollution is reduced, the environmental protection requirement is met, through a mode of switching the drilling unit and the splitting unit, continuous connection and splitting after drilling operation are promoted, the operation efficiency can be improved, and the time cost and the labor cost of frequent replacement of equipment are reduced; compact integrated design is adopted, the equipment size is reduced, the connecting rod is matched with the shipborne mechanical arm, depth adjustment is achieved, and the device is suitable for the narrow environment.

The present application relates to the field of underground rock breaking technology in mines, and provides a high-strength rock mass in-situ low-energy rock crushing mining robot and excavation method. The excavation robot includes a walking mechanism and a robot body mounted on the walking mechanism. The robot body includes at least a power system and a control system. The robot body is equipped with an all-round support mechanism, an environmental perception system, a drilling and expansion and tension rock breaking system, a rock crushing and raking system, and a slag collection and transportation system. The control system includes an intelligent dynamic analysis module for excavation parameters, a communication module, and an intelligent navigation module. The excavation robot integrates multiple functions such as drilling, rock breaking, rock crushing, and slag transportation. By fully utilizing the in-situ engineering geological conditions of the rock mass and the mechanical properties of the rock material (resistance to compression but not to tension and shear) to break the rock, it can achieve block size control after the rock is broken, effectively improve rock breaking efficiency, reduce mining energy consumption, and achieve safe, stable, and continuous rock breaking operations.

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

The invention relates to a hob rock breaking identification method, device and system based on a semi-analytical method, and relates to the technical field of shield cutter rock breaking. The method comprises the following steps: acquiring a cutter model and an initial rock model of the shield tunneling machine; simulating a scene in which the cutter cuts the rock by adopting the cutter model and the initial rock model to obtain a contact area of the cutter model and the initial rock model; dispersing the rock model in the first area into cubic units; assigning material attributes to the cube units, and calculating influence coefficients of the cube units; updating the load value of the cubic unit according to the influence coefficient, and calculating the total stress of the cubic unit according to the load value; determining an equivalent characteristic strain value of the first rock model and a convergence state of the equivalent characteristic strain value; and under the condition that the convergence state meets a preset condition, determining the number of damage units in the first rock model, and determining the damage degree of the first rock model according to the number. According to the scheme, the accuracy of pipeline rock breaking identification is improved.

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 provides a gas phase change rock breaking device and method based on an aluminothermic reaction, and belongs to the technical field of rock blasting. The rock breaking device comprises a graphite excitation pipe, a liquefied air bag and a sealing cover, the excitation pipe is filled with thermite, and thermite reaction can be carried out to release heat; the liquefied air bag is hermetically sleeved outside the excitation tube, is filled with liquid oxygen or liquid nitrogen and is changed into gas under the action of heat released by the excitation tube, and rock mass fracture is realized by volume expansion. By arranging a multi-section excitation pipe serial connection structure, adopting the industrial graphite excitation pipe, designing a liquid oxygen or liquid nitrogen double-medium system and using the polyethylene degradable material bag body, the safety, the economical efficiency and the environmental adaptability of open-air rock mining are remarkably improved.

The invention discloses a high-pressure water jet heading machine and a high-pressure water rock breaking and pile cutting method. The problems that in the prior art, a shield tunneling machine is long in obstacle cutting construction period and high in risk, and full-section obstacles cannot be treated when facing the shield tunneling machine are solved. The high-pressure water jet heading machine comprises a cutterhead and a rear supporting sleeve, a cutter, a nozzle assembly and a detection device are arranged on the cutter head, and the nozzle assembly is connected with a high-pressure water system arranged on the rear support; the nozzle assembly comprises a radial moving nozzle and a fixed nozzle arranged on the outer edge of the cutter head. And the radial moving nozzle and the detection device are connected with the upper computer. The radial moving nozzles and the fixed nozzles arranged on the outer edge of the cutter head are combined with rotation of the cutter head cutter, so that the cutting range of high-pressure water flow is more uniform, meanwhile, the cutting diameter of the cutter head can be increased, and the cutting efficiency is higher.

The invention provides a device and method for exciting liquid oxygen phase change blasting through combustion of a non-static flammable adsorbing material, the device comprises a flexible pipe cavity filled with liquid oxygen, a liquid filling pipe, a flammable medium and a grounding wire are arranged in the flexible pipe cavity, and the flexible pipe cavity is composed of a base material layer, a heat insulation layer and an anti-static layer. Static electricity is eliminated by arranging the grounding wire and the anti-static layer; the heat insulation layer is arranged to reduce heat loss; by using the combustible medium prepared from agricultural and forestry wastes, the cost is reduced, and resource reutilization is realized; and through the special design of the liquid filling pipe, the combustible medium quickly and uniformly absorbs liquid oxygen, and the rock breaking efficiency is improved. The problems of electrostatic potential safety hazards, poor heat insulation performance and high combustible medium cost in an existing liquid oxygen blasting technology are solved, and the method has the comprehensive advantages of being safe, efficient, economical and environmentally friendly.

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

The invention discloses a rock drillability grade prediction method based on fixed bit pressure, and the method comprises the following steps: 1, carrying out fixed bit pressure drilling, and obtaining an actual measurement relation curve between the rock breaking depth and the drilling time; 2, according to the relation between the contact area of the drill bit teeth and the rock and the drilling depth, the relation between the drilling depth and the rock breaking volume of the drill bit is obtained; according to the relation between the drilling depth and the rock breaking volume of the drill bit, a theoretical relation curve between the rock breaking depth and the drilling time is obtained; 3, fitting the actual measurement relation curve and the theoretical relation curve to obtain the rock breaking volume in unit time; 4, obtaining the rock breaking time according to the rock breaking volume per unit time obtained in the step 3; obtaining a corresponding rock drillability grade according to the rock breaking time; while the rock drillability grade is accurately deduced and predicted, the number of experimental groups for drillability grading is effectively reduced, the experimental process is simplified, and the rock core and measurement time is saved.

The invention provides a rock mass crack dynamic expanding and breaking system in the tunneling process. The rock mass crack dynamic expanding and breaking system comprises a rock mass crack real-time capturing module, an image processing and control module and a particle flow pressurization transmitting module which are arranged at the position of a rocker arm of a tunneling machine. The advantages of high energy, high speed, high precision and the like of the high-energy particle flow technology are utilized, dynamic expansion cracking of new rock cracks in the tunneling process is achieved, the tunneling machine is assisted in rock breaking, meanwhile, synchronization of the auxiliary rock breaking procedure and the tunneling rock breaking procedure is achieved, the rock breaking time is shortened, and the rock breaking efficiency is improved; meanwhile, the image processing technology is used for classifying cracks generated in the tunneling process, multiple cracks with the maximum cracking degree are screened out, then high-energy particle flow is struck out in the crack cracking direction, unnecessary energy loss is reduced, and meanwhile precise and efficient rock mass expansion cracking is achieved; the invention further provides a rock mass crack dynamic expanding and breaking method in the tunneling process.

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

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

The invention discloses a loading structure optimization method based on stress wave analysis in open bench blasting. The method comprises the following steps: S1, performing rock mass blasting and stress wave theoretical analysis, researching a rock mass blasting rock breaking process and a breaking mechanism, deducing rock mass blasting mechanisms under different coupling media, and analyzing the influence of different coupling media on the blasting effect; and S2, calculating the initial delay detonation time according to the delay detonation rock blasting principle, and determining the optimal delay detonation time through numerical simulation calculation and field test demonstration. According to the method, a method combining theoretical analysis, numerical simulation and field test is comprehensively applied, a scientific and systematic charging structure optimization scheme is provided for open bench blasting, wide applicability and popularization value are achieved, progress of the open bench blasting technology can be promoted, and sustainable development of the mining industry is promoted.

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.