892 results about "Roadheader" patented technology

The invention discloses a tunnel surrounding rock deformation prediction method, system and equipment. The tunnel surrounding rock deformation prediction method comprises the steps that actual multi-source data in the tunneling process of a tunnel boring machine (TBM) are obtained, and the multi-source data at least comprise surrounding rock deformation monitoring data, tunneling data of the tunnel boring machine and vibration signal data; the multi-source data is input into a pre-trained prediction model, a prediction result of the tunnel surrounding rock deformation condition in the TBM tunneling process is obtained, and the prediction model is pre-trained with the pre-obtained multi-source data as a training sample and the tunnel surrounding rock deformation condition as a label. According to the embodiment of the invention, the method can achieve the advanced prediction of the deformation of the surrounding rock through the real-time data in the construction process of the tunnel boring machine, provides a scientific basis for the construction parameter optimization and risk early warning of the tunnel boring machine, reduces the workload of manual monitoring, and improves the construction automation level.

The present invention provides a method for designing an abrasive water jet-disc cutter combined rock-breaking cutter head, a system therefor, a cutter head and a tunnel boring machine (TBM), wherein the key technology of designing the abrasive water jet-disc cutter combined rock-breaking cutter head of the TBM are provided from the aspects of determining a combined rock-breaking combination mode, configuration of cutter operation parameters and optimization of the combined cutter head; the performance of the abrasive water jet-disc cutter combined rock-breaking cutter head manufactured according to the optimized layout parameters is improved; and a new idea is provided for the development and application of a full-section rock tunneling machine in the field of underground engineering.

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

The invention discloses a method and system for predicting the abrasion state of a heading machine hob based on multi-dimensional characteristics, and relates to the technical field of heading machine tunnel construction, and the method comprises the steps: monitoring the abrasion loss of the heading machine hob in a construction process in real time, obtaining the time sequence data of the abrasion loss of the hob, and carrying out the preprocessing; for the time series data, constructing GASF and RP two-dimensional images respectively by adopting a GASF angle field method and a recurrence plot method; the time sequence data and the two types of two-dimensional images are input into a hobbing cutter wear state prediction model, the two types of two-dimensional images pass through a dual-channel parallel CNN network, two-dimensional feature maps of the two types of images are extracted and flattened into two one-dimensional feature vectors, and hobbing cutter wear loss time sequence data are obtained through a Bi-LSTM network and an attention module based on a memory attention enhancement mechanism. And extracting a one-dimensional time sequence feature vector, fusing a plurality of feature vectors, and outputting a hob wear state classification result. According to the method, real-time and accurate prediction of the abrasion state of the hob is realized by fusing multi-dimensional features.

The invention relates to small-section rock tunnel construction integrated equipment and a construction method. The small-section rock tunnel construction integrated equipment comprises a heading machine, a spraying mechanism, a supporting mechanism and a transport vehicle, wherein the spraying mechanism and the supporting mechanism are carried on a heading machine vehicle body, and the transport vehicle corresponds to a slag outlet of a cantilever type heading device. The concrete wet spraying device and the anchor rod drilling device are carried on the upper portion of the cantilever type heading machine body, and uninterrupted continuous operation of tunneling, deslagging and supporting can be achieved by reasonably arranging the positions and the operation sequence of the concrete wet spraying system, the anchor rod drilling device, the deslagging vehicle and the concrete mixer truck. And meanwhile, participation of constructors is effectively reduced, manpower is saved, and the efficiency and safety of tunnel construction are improved.

The invention discloses a forward and reverse design and simulation method for virtual excavation of a sunken vertical shaft heading machine. The method comprises the following steps: S1, initializing a terrain; s2, kinematic modeling of the heading machine; s3, track surface generation and virtual excavation; s4, forward design; s5, carrying out reverse design; and S6, outputting data. According to the forward and reverse design and simulation method for virtual excavation of the sinking type vertical shaft heading machine, geometric-level virtual excavation simulation can be realized based on geometric parameters, a kinematic model and stratum data of a VSM; the excavation effect of the preset excavation parameters can be verified through forward design, and a feasible excavation parameter set can be intelligently and reversely solved from the target excavation morphology through reverse design; and meanwhile, a standardized geometric model and structured data which can be directly used for subsequent engineering numerical analysis and construction guidance can be exported, so that the parameter determination precision, the process controllability and the scheme optimization capability before construction are improved.

The invention relates to the technical field of mine safety, and particularly discloses a gas monitoring and early warning system for roadway tunneling construction, which comprises a data acquisition module, a data processing module, a prediction module, an early warning analysis module, a sensor sensitivity compensation judgment module and a self-adaptive calibration module. Harmful gas concentration data and environment, geology and tunneling operation data are collected by constructing a three-level collaborative network of fixed nodes, an inspection robot and a tunneling machine micro sensor; carrying out data cleaning and fusing multi-source gas concentration data to obtain real-time gas concentration; predicting the gas concentration at the next moment through an LSTM network training model based on the real-time gas concentration; performing gradient early warning according to the predicted value and a safety threshold value, and linking ventilation, equipment and a risk avoiding system; sensitivity attenuation of the gas sensor is further judged and calibrated, full-domain real-time sensing, trend prediction and early warning and intelligent calibration of the sensor of the driving face gas are achieved, and monitoring timeliness, early warning scientificity and data reliability are improved.

The invention discloses an energy-saving and consumption-reducing tunnel excavation method of a cantilever type heading machine under the action of gravity. The energy-saving and consumption-reducing tunnel excavation method comprises the following steps: step 1, drawing a geological form map; step 2, identifying an excavation contour line of the tunnel; step 3, constructing an initial free face; step 4, constructing a contour boundary groove; 5, drilling holes in the tunnel face at intervals, and sequentially stretching a rock stratum crushing device into each drill hole to perform fracturing operation; 6, the cutting head is controlled to conduct circuitous cutting in the trend of the rock stratum; in the excavation process, a rock stratum crushing device is used for moving along a cutting path; and step 7, trimming the contour boundary groove. According to the invention, the contact time of the cutting pick and the hard rock can be effectively reduced, and the abrasion of the cutting head is reduced; the rock is caved by utilizing gravity, so that the excavation efficiency is improved; the mechanical load is optimized, and the service life of equipment is prolonged; and meanwhile, the stress is released step by step, and the probability of sudden collapse risk is reduced. The method is suitable for the technical field of tunnel construction.

The invention discloses a cutting pick wear detection method and system for a heading machine, and relates to the technical field of mining machinery state monitoring, and the method comprises the steps: obtaining a cutting pick tool seat and a tool bit, fixing the tool bit on the tool seat through a plurality of rotating shafts, and arranging a plurality of high-bandwidth acoustic emission sensors on the rotating shafts; identifying a rotation detection signal by using a high-bandwidth acoustic emission sensor, and extracting characteristics such as acoustic emission pulse starting time and peak amplitude; constructing a sound source space positioning model to obtain a sound source positioning result; and mapping a sound source positioning result to the rotating shaft three-dimensional model to identify hidden wear, and outputting a risk level. The technical problems that the traditional detection means is difficult to accurately identify the hidden wear of the heading machine cutting tooth rotating shaft and cannot comprehensively and accurately acquire wear information to meet the accurate evaluation requirement are solved, and the accurate identification and risk grade evaluation of the hidden wear of the heading machine cutting tooth rotating shaft are achieved; and the accuracy and comprehensiveness of cutting pick wear detection are improved.

The invention relates to the technical field of engineering construction measurement and control, and discloses a calibration method for positioning and attitude determination of a heading machine, which comprises the following steps: constructing a data acquisition module, a route making module, a real-time dynamic monitoring module, an execution module, a feedback module and an optimization module; the data acquisition module is used for completing comprehensive acquisition of multi-source data of the heading machine, a route, an environment and an obstacle, the route making module is used for fusing the multi-source data to carry out path planning and error compensation, and the real-time dynamic monitoring module is used for realizing heading machine pose tracking and emergency correction through visual marking points and a laser scanner. The execution module is used for converting an optimal tunneling path into a driving motor control instruction, the feedback module is used for collecting deviation data of an actual operation pose and a planned path in real time and returning the deviation data, the optimization module realizes long-term self-adaptive optimization of the system, and finally, precision, safety and high efficiency of the tunneling operation of the tunneling machine in a complex underground environment are realized.

The invention provides a pea gravel self-adaptive injection method, an injection system, rear corollary equipment and a tunnel boring machine, and belongs to the technical field of tunnel boring. The injection state of the injection port pipeline is judged by detecting the vibration condition of the injection port pipeline at the tail end of the injection pipeline, and the blanking adjusting valve of the feeding device is controlled to adjust the opening degree of the blanking port in a self-adaptive mode according to the injection state, so that the blanking speed is matched with the current injection state in a self-adaptive mode. Meanwhile, the rotating speed of a motor of the pea gravel pump is adjusted in a self-adaptive mode according to the opening degree of a discharging opening, self-adaptive matching of the discharging speed and the pea gravel spraying amount is achieved, the system can achieve self-adaptive control over the discharging speed, the rotating speed of the motor and the air inflow according to a control program of a PLC, fault signals and accessory replacement reminding are provided, manual operation is not needed, and the working efficiency is improved. The problems that at the present stage, the blanking speed, the motor rotating speed and the air inflow are adjusted completely depending on manual experience, the whole system is unstable, pipe blockage and pipe explosion frequently occur on site, and quick-wear parts are abraded rapidly are solved.

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

The invention relates to the technical field of coal mine tunnel supporting, in particular to a coal mine tunnel safety supporting system which comprises a supporting assembly, a driving assembly and a head-on protection unit, and a front supporting frame and a rear supporting frame in the supporting assembly are in sliding fit through a supporting piece; the driving assembly adopts a motor to drive a screw block to achieve spring alternate energy storage, a supporting hydraulic cylinder is combined to control state switching of the supporting frames, a moving frame is driven through spring energy release, and after the controller receives data of the heading machine and the scraper conveyor, the front supporting frame and the rear supporting frame are controlled to move forwards alternately, and the head-on protection unit conducts follow-up protection. The system realizes cooperative linkage with the heading machine and the scraper conveyor, improves the machine following and support moving efficiency, reduces the risk of empty roof, and ensures the safety of roadway support.

The invention provides a self-weight lower deslagging construction technology of a road tunnel vertical shaft heading machine, and relates to the technical field of tunnel vertical shaft construction. Stable conversion of the deslagging process is achieved through the dynamic regulation and control technology, a progressive pressure reduction strategy is adopted to adjust tunneling parameters in four stages to enter the position above a raise-boring working chamber (thrust is decreased from 14000kN to 8000kN, torque is decreased from 3000kNm to 2000kNm), step changing is conducted by reasonably utilizing the positions of a supporting shoe, a stabilizing shoe and a cutterhead relative to an auxiliary transverse channel, and the tunneling efficiency is improved. Therefore, the conversion preparation of the tunneling process is completed.

The invention relates to a spatial position measuring method based on a heading machine spatial position measuring system. The spatial position measuring system comprises a light source, a camera, a control module and a calculation module, the light source is arranged on a heading machine body, the control module adjusts the light source to periodically flicker within a specific time interval, the camera is arranged on a roadway wall of a heading working face, and the calculation module is arranged on the roadway wall. The camera collects continuous video frames and transmits the continuous video frames to the calculation module, and the calculation module processes the continuous video frames and outputs spatial position information of the heading machine. According to the spatial position measuring method based on the spatial position measuring system of the heading machine, the accuracy of spatial positioning of the heading machine in roadway operation can be improved, the requirements of high-precision position tracking and automatic control are met, and the intelligent level of fully-mechanized excavation is improved.

The invention discloses a roadway heading machine positioning method, device and system based on vision-inertia multi-stage depth fusion, the device comprises an industrial camera, a strapdown inertial navigation system, an artificial target and a computing system, the industrial camera is used for acquiring an artificial target image, the strapdown inertial navigation system is used for acquiring inertia information, the artificial target is arranged in a roadway behind a heading machine, and the computing system is used for computing the inertial information. The system is used for providing rich information for full-state vision measurement; a trained positioning model is integrated in the calculation system, and in the tunneling working process of the roadway tunneling machine, the calculation system estimates the machine body pose on line based on the positioning model; according to the positioning model, the current six-degree-of-freedom machine body pose of the tunnel boring machine is estimated on line by using the previous frame visual inertial positioning comprehensive feature and the inter-frame short-time inertial positioning feature as joint prior information and combining the current moment visual sequence fusion feature. According to the invention, efficient and reliable on-line positioning of the tunnel boring machine under extreme working conditions is realized.

The invention relates to a tunnel boring machine. The tunnel boring machine comprises a main machine shield body and an anchor mesh shotcrete supporting system connected with the main machine shield body, the main machine shield body comprises a front shield, a rear shield and a rear shield, the front shield comprises a cutterhead and a main drive, and the main drive is used for driving the cutterhead to rotate; the supporting shield comprises a supporting shoe and a supporting shoe oil cylinder, and the supporting shoe oil cylinder is connected with the supporting shoe and used for driving the supporting shoe to stretch out and draw back; the telescopic shield is arranged between the front shield and the supporting shield, the telescopic shield comprises a plurality of thrust oil cylinders, each thrust oil cylinder is in spherical hinge connection with the front shield and the supporting shield, and the thrust oil cylinders are used for driving the front shield to tunnel; and the diameters of the front shield, the telescopic shield and the supporting shield are gradually reduced.

The application discloses a shaft tunneling machine and a construction method thereof. The shaft tunneling machine comprises a tunneling host connected with a ring supporting shoe device through a stepping device, the ring supporting shoe device is connected with the tunneling host through a supporting shield body, the supporting shield body is connected with a fixed part of a ring rotary drive of the tunneling host through an extension device, a rotary part of the ring rotary drive is connected with an oscillatable cutting device, the cutting device is used for excavation, different diameters of excavation can be realized by controlling oscillation of the cutting device and extension stroke of the ring supporting shoe device, and the reconstruction of the tunneling host can be completed by replacing the supporting shield body when the diameter is changed. The stepping device is arranged between the ring supporting shoe device and the supporting shield body, and the extension device is arranged between the supporting shield body and the tunneling host, so that the extension stroke of the cutting device can be effectively enlarged, frequent descending of the whole shaft tunneling machine is avoided, the tunneling efficiency is improved, and the disturbance of frequent stepping to the soil body of a hole wall is effectively reduced.

The utility model relates to the technical field of heading machines, and provides a ballast receiving hopper structure of a heading machine and the heading machine. The ballast receiving hopper structure of the heading machine comprises a ballast hopper body, a first ballast sliding plate and a first adjusting assembly, wherein a ballast sliding channel penetrating through the ballast hopper body is formed in the ballast hopper body; wherein the first ballast sliding plate is arranged at an inlet of the ballast sliding channel; the first slag sliding plate is suitable for being rotationally connected with the slag hopper body; the first ballast sliding plate is suitable for changing the falling path of ballasts; wherein the first adjusting assembly is arranged between the ballast hopper body and the first ballast sliding plate; the first adjusting assembly is suitable for adjusting the angle between the first slag sliding plate and the slag hopper body. According to the scheme, the angle between the first ballast sliding plate and the ballast hopper body is adjusted through the first adjusting assembly, so that it is guaranteed that ballast stones can always fall on the first ballast sliding plate during large-angle uphill tunnel operation, and the ballast stones normally slide on the ballast sliding plate during large-angle downhill tunnel operation.

The utility model discloses a three-arm top anchor rod synchronous drilling machine for an anchor driving machine. The three-arm top anchor rod synchronous drilling machine comprises an anchor rod drilling machine part and a telescopic arm group, wherein the anchor rod drilling machine part consists of three anchor rod drilling machines which are arranged side by side; a rotary sliding seat set of the jumbolter portion is installed at the extending end of a telescopic arm set through a hydraulic swing oil cylinder, a sliding frame set is arranged on the rotary sliding seat set through a left speed multiplication mechanism and a right speed multiplication mechanism, a lifting frame set is fixed to the sliding frame set, and a lifting sliding frame set is arranged on the lifting frame set through a lifting speed multiplication mechanism. The right jumbolter, the left jumbolter and the middle jumbolter are arranged on the lifting sliding frame set side by side and can all achieve front-back and left-right angle adjustment. When needing anchor rods, the three-top anchor rod drilling machine slides to the head of a driving anchor machine, rotates by 90 degrees, synchronously slides, synchronously rotates and synchronously lifts, the top anchor rods can be completely supported in the shortest time, the hollow top tunneling time is greatly shortened, and the safety of head-on workers is guaranteed.

The invention relates to a device and method for a jet flow coordinated heading machine to penetrate through an underground diaphragm wall, the device for the jet flow coordinated heading machine to penetrate through the underground diaphragm wall comprises a cutter head, a cutter head cutter and a telescopic spray head, the cutter head cutter is arranged on the cutter head, the cutter head is provided with a telescopic hole position used for installing the telescopic spray head, and the axis of the telescopic hole position extends in the front-back direction; a reciprocating driving mechanism is installed in the telescopic hole site and used for driving the telescopic nozzle to stretch and retract front and back along the telescopic hole site. The telescopic nozzle can realize advanced rapid cutting of a front reinforcing steel bar structure, so that stirring and aggregation of reinforcing steel bars during rotary cutting of the cutterhead cutter are avoided, the cutting length of the reinforcing steel bars is reduced, and smooth deslagging of a spiral conveyor of the tunnel boring machine is facilitated; the technical problems that steel bars are difficult to cut and the cutting length of the steel bars is large in the process that an existing tunnel boring machine penetrates through an underground diaphragm wall are solved.

The mining crawler-type carrier based on the explosion-proof diesel engine comprises a crawler chassis and crawler frames, the crawler frames are arranged on the two sides of the crawler chassis, a driving wheel and a driven wheel are installed at the two ends of each crawler frame respectively, and a plurality of thrust wheels are installed on the bottom side of each crawler frame; the chain plate is provided with a bending protrusion structure with a specific angle, the material conveying efficiency is effectively improved, material adhesion and blockage are prevented, an intelligent cooperative control system is adopted, automatic machine following operation and precise discharging of the heading machine are achieved, the operation automation degree is greatly improved, and the automatic material conveying system is suitable for being used in the heading machine through a multiple sensing system and an intelligent analysis algorithm. Real-time monitoring, fault early warning and service life prediction of the equipment state are realized, and the equipment reliability is remarkably improved.

The application provides a long-distance crossing river and lake pipe jacking construction method, which comprises the following steps: when a long-distance crossing river and lake encounters a special stratum, injecting grouting material into the special stratum to reinforce the stratum; then driving a pipe jacking device to drive a pipe jacking tunnel and a pipe jacking machine to push into the special stratum, and simultaneously starting a grouting mechanism to pour resistance-reducing thixotropic mud outside the pipe jacking tunnel through a grouting hole; a hydraulic and grouting pressure sensor collects grouting pressure and hydraulic pressure in real time, and transmits the pressure values to a control system; the control system compares the collected pressure values with a pressure threshold value; when the pressure values are greater than the pressure threshold value, the grouting amount, grouting pressure, pushing force and tunneling parameters are increased, and the control system continues to compare the collected pressure values with the pressure threshold value until the collected pressure values are less than the pressure threshold value. The application can realize safe tunneling construction of the long-distance crossing river and lake pipe jacking tunnel without replacing cutters, reduce cutter wear and improve construction efficiency.

The invention relates to the technical field of tunnel boring machines, in particular to a method and system for evaluating the machine jamming risk of a rear supporting system of a tunnel boring machine, and the method comprises the steps: building a surrounding rock mechanical model; loading the tunnel face space supporting effect, the initial lining supporting effect and the reserved space between the rear matching system and the initial lining as boundary conditions of the model into the surrounding rock mechanical model; the tunneling process is propelled in a time increment mode; calculating a convergence response of the lining / supporting member based on the rigidity and the mounting state of the current supporting member; comparing the obtained convergence differences; repeating the steps until a preset termination condition is reached; the maximum convergence value obtained through time sequence calculation is compared with the reserved space between the rear supporting system and the initial lining, a jamming risk warning is judged and output, dynamic coupling calculation of tunnel convergence and supporting pressure is achieved through numerical iteration, and therefore the accuracy of risk assessment and the reliability of construction control are remarkably improved.

The utility model discloses a heading machine front frame for coal mine, which comprises a connecting frame, a movable frame is movably connected inside the connecting frame, the center line of the connecting frame and the center line of the movable frame are on the same vertical plane, and two ends of one side of the connecting frame are respectively provided with a group of mounting sleeve plates. A telescopic mechanism used for adjusting the length of the rack is arranged outside the movable frame. According to the front rack of the heading machine for the coal mine, the fixed cover is arranged, after the front rack is installed, hydraulic rods at the two ends of a movable frame can be started at the same time, the hydraulic rods push a driving plate to move towards one side, the driving plate drives a connecting shaft to move towards one side through a connecting plate, and then the connecting shaft pushes a connecting frame to move towards one side through a transmission plate; and the connecting shaft is attached to the interior of the sliding groove so that the transmission plate can be limited, the stability of the transmission plate in the moving process is guaranteed, the length of the rack can be adjusted, and the problem that the length of the rack cannot be adjusted is solved.

The utility model provides a drill bit of a cantilever heading machine, which relates to the technical field of mining and tunneling equipment and comprises a drill bit body and a plurality of blades arranged on the drill bit body. An adjusting mechanism used for automatically adjusting the cutting angle of the blade is arranged on the drill bit body and comprises an angle sensor, a controller and a driving part, the angle sensor is used for detecting the cutting angle of the blade and generating a cutting angle signal, and the controller is provided with a preset cutting angle range; the controller compares the cutting angle signal with a preset cutting angle range, and when the cutting angle signal exceeds the preset cutting angle range, the driving piece is controlled to adjust the cutting angle of the blade to be within the preset cutting angle range. The adjusting mechanism comprises a hardness detection unit and a speed detection unit which are arranged on the drill bit body and used for detecting the rock stratum hardness and the drilling speed. By intelligently adjusting the cutting angle, the wear resistance is improved, the structural stability is enhanced, the cutting efficiency of the drill bit is improved, and the service life of the drill bit is prolonged.

This application provides a tunnel boring machine (TBM) and its control method, relating to the field of engineering machinery technology. The TBM includes: a cutterhead; the cutterhead is disposed at one end of a shield; at least one advance support assembly is disposed within the shield, and the advance support assembly has multiple support members; the advance support assembly is configured to, depending on the surrounding rock condition in front of the cutterhead, selectively extend the multiple support members from within the shield to above the cutterhead to form a temporary support zone, or drive the support members to retract from above the cutterhead back into the shield. According to the embodiments of this application, active support for the surrounding rock above the cutterhead is achieved through the advance support assembly based on the surrounding rock condition, and the machine does not need to be stopped during support, enabling continuous and rapid traversal of deformable surrounding rock sections, thus improving the TBM's adaptability to complex terrain, tunneling capacity, and tunneling efficiency.

The invention discloses a rapid energy dissipation protection system and method for TBM tunnel rockburst under high ground stress. The open type TBM tunnel is located in an incomplete supporting area in the front supporting operation L1 area. A steel arch frame is installed in a surrounding rock exposed area behind a shield, and the steel arch frame is arranged in a ring mode; a high-toughness energy dissipation net is laid on the surface of the steel arch frame, the high-toughness energy dissipation net is arranged between a surrounding rock exposed area and a guniting bridge in the longitudinal direction of the tunnel, and the annular arrangement range of the high-toughness energy dissipation net is an arch protection area; and the high-toughness energy dissipation net is fixed on the steel arch frame through a plurality of door-shaped clamps. The temporary energy dissipation net and the permanent steel frame are connected and formed, the energy dissipation net is circularly and inversely used for construction, and safe construction of the tunnel in an unfavorable geological section is guaranteed.

The application discloses a cantilever conveyor with an anti-collision function, a cantilever tunneling machine and a control method. The cantilever conveyor comprises a distance sensor, the distance sensor is installed at the bottom of the cantilever conveyor and protrudes from the bottom wall of the cantilever conveyor, the monitoring direction of the distance sensor is parallel to the cantilever conveyor and faces the free end of the cantilever conveyor. The distance sensor forms a protective fence parallel to the cantilever conveyor at the bottom of the cantilever conveyor. When an obstacle touches the protective fence, the distance sensor monitors the distance between the obstacle and the distance sensor, thereby prompting the user that the obstacle will collide with the cantilever conveyor. Moreover, the distance sensor rotates with the cantilever conveyor, that is, the protective fence parallel to the cantilever conveyor also rotates with the cantilever conveyor. Therefore, the cantilever tunneling machine can still realize the anti-collision function under various working conditions (for example, special terrains such as uphill and downhill), and the anti-collision effect is better.

The utility model provides a crushing device and a tunnel boring machine, and relates to the technical field of tunnel boring, the crushing device comprises a case, the inner wall of the case is rotatably connected with a movable cutter assembly, two ends of the inner side of the case are respectively and symmetrically provided with crushing protection frames, the inner walls of the crushing protection frames are provided with a plurality of fixed cutter assemblies, and the outer sides of the plurality of fixed cutter assemblies are provided with driving frames; a telescopic part connected with the driving frame is further arranged on the outer side of the machine box in a penetrating mode, a telescopic air cylinder is started to drive the connecting frame to be horizontally pushed towards one side, the two supporting rods and the multiple brake blocks located between the two supporting rods are pushed to synchronously move, the brake blocks can slide in inclined grooves in the moving process, and therefore the control frame is extruded to move towards the front side; the control frame can linearly slide on the telescopic limiting block in the moving process, so that the control frame and the fixed cutter assembly on the front side are guided, the distance between the fixed cutter assembly and the movable cutter assembly is changed, the distance can be finely adjusted according to rocks with different hardness, and the good crushing effect is achieved.