108results about How to "Improve tunneling efficiency" patented technology

The invention provides an end-to-end model TBM tunneling rock mass state sensing method and system, and relates to the technical field of image processing and deep learning. The method comprises the following steps: collecting TBM tunneling parameters and rock slag picture data in a TBM construction case or collecting TBM tunneling parameters and rock slag picture data of a current TBM construction tunnel under construction, and establishing a data storage warehouse module; training an end-to-end neural network model by using the TBM tunneling parameters and the corresponding rock mass state parameters; a trained end-to-end deep neural network model is deployed on a cloud server and used for receiving real-time TBM tunneling parameters and rock slag picture data images and executing rock mass state classification, and surrounding rock grades of tunneling rock masses are displayed on a visual interface of a TBM upper computer. According to the method, the rock mass state information can be displayed on the visual interface of the TBM upper computer in real time, and the defects that traditional rock mass condition parameters are difficult to obtain, and the means are backward are overcome.

The invention provides a water-rich stratum ultra-short space earth pressure balance shield split launching method. The split launching method sequentially comprises the steps of trolley placement, launching tunnel end stratum reinforcement, launching bracket and counter-force frame installation, tunnel portal chiseling and sealing steel sleeve installation, negative ring upper half ring dismounting, negative ring upper part force transmission replacing with a steel support and the like, and the split launching method comprises the steps of trolley placement, launching tunnel end stratum reinforcement, launching bracket and counter-force frame installation, tunnel portal chiseling and sealing steel sleeve installation, negative ring upper half ring dismounting, negative ring upper part force transmission replacing with a steel support and the like. The problems of water gushing, sand gushing and excessive ground settlement occurring in water-rich stratum earth pressure balance shield split launching are solved, the earth pressure balance shield split launching process in the water-rich stratum ultra-short space is achieved, pipe pieces can be lowered from a shield hoisting opening in the launching process, soil excavation can be achieved, the soil excavation efficiency is improved, and the construction period is shortened. The problem that the shield construction advancing speed is low when the length of a shield launching well pit is far smaller than the overall size of a shield tunneling machine is smoothly solved.

The invention discloses comprehensive rock drift rapid tunneling equipment and a using method thereof.According to the tunneling equipment, a drilling and anchoring integrated multifunctional drilling machine is arranged on one side of a cantilever type tunneling machine body, and a temporary supporting mechanism is arranged above an oscillation cutting part; a deep hole is formed in a to-be-crushed rock by utilizing the multifunctional drilling machine, the deep hole is further expanded and cracked by utilizing the pulsating fracturing system, the strength of a rock mass is weakened, then the rock mass is milled by adopting the oscillating cutting part, and finally, the rock mass is anchored and protected by utilizing the multifunctional drilling machine and the temporary supporting device, so that a guarantee is provided for an operation environment. According to the equipment and the technology, a traditional roadway tunneling procedure is simplified into a continuous procedure, the tunneling efficiency of roadway rock mass is greatly improved, and meanwhile the cost is saved.

The invention discloses a translation type cutting device for a tunnel cantilever heading machine, which comprises a disc-shaped mounting seat movably arranged on a base, a multi-angle adjusting mechanism is arranged between the base and the disc-shaped mounting seat, the lower end of the base is connected with the heading machine through a vertical driving oil cylinder, the upper end of the disc-shaped mounting seat is connected with one end of a suspension arm, and the other end of the suspension arm is connected with the base. The other end of the suspension arm is provided with a monitor body, one end, far away from the suspension arm, of the monitor body is provided with a cutting mechanism, the suspension arm is provided with a driving motor or a hydraulic motor, an output shaft of the driving motor or the hydraulic motor is coaxially connected with one end of a transmission rod, and the transmission rod is coaxially and rotatably assembled in the monitor body; and the other end of the transmission rod is connected with the cutting mechanism. According to the invention, the cutting working surface can be effectively enlarged, the cutting maneuverability is improved, and the tunneling efficiency of the tunneling machine is improved. The invention is suitable for the technical field of tunneling in tunnel construction.

The invention belongs to the technical field of underground engineering construction, and provides a shield tunneling parameter optimization method and system based on historical data mining, and the technical scheme is as follows: constructing a shield tunnel geologic model based on an obtained geological survey report and advanced geological forecast data; tunneling safety grading is conducted on the shield tunneling surrounding rock based on the shield tunnel geologic model, and a dynamic geologic model is obtained; based on the dynamic geologic model, the site construction environment and related specifications, set shield construction task information is obtained; according to the dynamic geologic model and set shield construction task information, corresponding shield tunneling parameter information is determined, shield tunneling efficiency under the current shield tunneling parameters is analyzed, if the shield tunneling efficiency does not reach the set level, the shield tunneling parameters are adjusted according to the shield tunneling efficiency condition under the current shield tunneling parameters, and the shield tunneling efficiency is adjusted according to the shield tunneling efficiency condition under the current shield tunneling parameters. And guiding field construction according to the optimized shield tunneling parameters. The shield tunneling efficiency is improved, and the engineering cost is reduced.

The invention discloses a roadway surrounding rock dynamic accurate control method, and relates to the technical field of underground roadway surrounding rock control. The technical problem that in the prior art, blindness exists in support design in roadway surrounding rock control is solved. The method comprises the steps that a data collection and analysis system is used for collecting and analyzing mine geological data and evaluating geomechanics key indexes; the stability influence factor analysis system evaluates the existing roadway support stability by classifying the roadway surrounding rock stability; a targeted supporting scheme is provided in combination with an existing supporting scheme, related standards are established, and continuous dynamic optimization and improvement are conducted on follow-up supporting design. According to the method, dynamic analysis and targeted design are carried out on the roadway, roadway deformation can be effectively controlled, the comprehensive cost of roadway supporting is reduced, the roadway tunneling efficiency is improved, the problem of coal mine excavation imbalance is solved, safety accidents caused by supporting design are avoided, and dynamic precise control over surrounding rock of the underground roadway is achieved.

The invention relates to a hard rock tunneling and supporting miner-bolter, which belongs to the technical field of miner-bolter, and comprises a machine body erected on a crawler belt, the middle part of the machine body is provided with a miner-bolter mechanism for crushing and tunneling hard rock, the machine body is provided with a flow guide mechanism and a conveying belt for discharging broken stones, and the top is provided with a supporting mechanism for providing temporary support; the digging and anchoring mechanism comprises a cap-shaped rotating frame, the levelness is adjusted through a first oil cylinder, the front portion of the rotating frame is connected with a pitching frame, and a second oil cylinder is used for adjusting the pitching angle. A rotating shaft is arranged on the pitching frame, a tunneling head is connected into the rotating shaft, stone jacking hammers are symmetrically arranged on the two sides of the tunneling head, and the supporting mechanism is a rock crushing cone and provided with a rotatable conical protruding part. A gravel separating disc is arranged at the rear part of the rock crushing cone, grinding balls are uniformly distributed on the gravel separating disc, and the gravel separating disc can vertically move for grinding and guiding small gravels; by means of innovative structural design and function integration, various pain points in a traditional bolter miner supporting technology are solved, and the efficiency and safety of hard rock tunnel tunneling and supporting are greatly improved.

The invention discloses a large shield hob layout modeling method and system based on an improved CSM model, and belongs to the technical field of shield tunneling. Selecting corresponding basic parameters based on the project condition and the target cutter; analyzing the generation mechanism of the stress of the target cutter and the mutual relation to obtain the stress characteristics of the target cutter; an improved CSM model is established, and the actual stress of the target tool is obtained through calculation; taking the minimum total radial resultant force of the cutter head and the minimum overturning moment as objective functions, proposing a resultant force constraint condition, an overturning force constraint condition, a stress constraint condition, a mass center position constraint condition and a cutter spacing constraint condition, and constructing a hobbing cutter layout optimization mathematical model; and obtaining a hob layout scheme by using the hob layout optimization mathematical model. According to the method, the improved CSM model is introduced, the vertical force and the rolling force of the hob are considered, and the lateral force is innovatively brought into an analysis framework, so that the comprehensive stress characteristics of the hob in actual tunneling are reflected more accurately.

The invention relates to the field of coal mine tunnel supporting, in particular to a coal mine tunnel slime water in-situ hardening device and method. The device comprises a slime water self-suction device, a stirring mechanism, a paving device, a walking mechanism and a feeding device, wherein the slime water self-suction device is used for sucking slime water on a bottom plate of an excavation roadway, the stirring mechanism is used for mixing and stirring the slime water and other materials into an in-situ hardening material, the paving device is used for paving the in-situ hardening material, and the walking mechanism is used for bearing the in-situ hardening device and can drive the in-situ hardening device to move. The feeding device is used for supplying in-situ hardening raw materials; the method comprises the steps that the inclination condition of a vehicle body is obtained in real time through cooperation of a laser transmitter, target paper and a camera, and leveling is conducted by adjusting the height of a leveling roller. According to the invention, the integration of extraction, stirring and paving can be realized, the problems of difficulty in pedestrians and driving and the like caused by excessive accumulation of coal slime on a bottom plate of a tunneling roadway are solved, the labor intensity of workers is reduced, and the tunneling efficiency is improved.

The invention relates to the field of data processing, in particular to a shield tunneling machine tunneling efficiency analysis method and device based on big data, and the method comprises the steps: obtaining geological parameters, and determining the type of a cutting head of a shield tunneling machine and initial tunneling parameters; controlling a shield tunneling machine to perform tunneling and deslagging according to the initial tunneling parameters, and acquiring tunneling data in real time; performing tunneling efficiency evaluation; judging whether an expected standard is reached or not according to a tunneling efficiency evaluation result, and if the expected standard is not reached, updating tunneling parameters; controlling the shield tunneling machine to continue tunneling and deslagging according to the updated tunneling parameters; comparing the tunneling data before and after the tunneling parameters are updated, and analyzing the change condition of the tunneling efficiency; if the speed increasing amplitude is smaller than the preset amplitude, correcting the updated data; and if the speed increasing amplitude is larger than or equal to the preset amplitude, the updated tunneling parameters are continuously used for controlling the shield tunneling machine to continue tunneling and deslagging. Through dynamic adjustment and a real-time feedback mechanism, the tunneling efficiency and the construction precision are improved.

The invention discloses a coal rock quality near-bit while-drilling evaluation device adaptive to a mining directional drilling machine, which comprises a PDC (Polycrystalline Diamond Compact) bit, a near-bit while-drilling measurement nipple, a screw drill, a while-drilling sound wave detector, a track measurement exploring tube and a central through cable drill rod which are connected in sequence, the near-bit measurement-while-drilling nipple comprises a cylinder, a first internal thread connecting part, a first external thread connecting part and a detection module arranged on the cylinder, and the detection module comprises a rotating speed sensor, a positive pressure strain gauge and a rotating torque strain gauge; the method comprises the following steps: 1, mounting the coal rock quality near-bit while-drilling evaluation device; 2, drilling and data acquisition of a to-be-detected coal seam; and 3, obtaining coal rock quality evaluation indexes of the coal seam to be detected. The method is reasonable in design, the near-bit while-drilling data are processed to obtain the corrected rock mass basic quality index, and the coal rock mass quality grade near-bit while-drilling quantitative judgment is performed according to the corrected rock mass basic quality index.

The invention discloses a TBM cutterhead torque prediction method, system and device and a medium. The method comprises the steps that tunneling state parameter initial sample data influencing the cutterhead torque are obtained; the initial sample data are preprocessed, and abnormal tunneling state data in the TBM tunneling state parameters are removed; calculating the weight of each tunneling state parameter influence factor by adopting a rough set; selecting several characteristic parameters having the highest correlation with the cutterhead torque by using the rough set, forming a matrix by the characteristic parameters, and inputting the matrix into an LSTM neural network for training; and calculating a loss function according to TBM cutterhead torque prediction results output by the LSTM model in sequence, optimizing model parameters according to loss function calculation results, and finishing model training when training conditions are met to obtain a TBM cutterhead torque prediction model. According to the method and the system, the torque of the cutterhead can be quickly and accurately calculated in the tunneling process of the TBM equipment, so that reference is provided for an operator, the tunneling efficiency is improved, and equipment faults, cost increase and the like caused by improper selection of operation parameters are reduced.

The utility model relates to a vertical shaft heading machine quarrying device and a vertical shaft heading machine, the vertical shaft heading machine quarrying device is arranged between a slurry pump and a slag suction box of the vertical shaft heading machine, the vertical shaft heading machine quarrying device comprises: a slurry discharge pipeline, which is respectively connected with the slurry pump and the slag suction box in an on-off manner; the stone falling pipeline is arranged on the side wall of the slurry discharging pipeline, the stone falling pipeline is at least provided with a stone slag inlet and a stone slag outlet, and the stone slag inlet is communicated with the interior of the slurry discharging pipeline; the stone storage box is at least provided with an inlet and an openable and closable discharge port, and the inlet is communicated with the slag stone outlet; at least part of stone slag entering the slurry discharging pipeline from the slag suction box can enter the stone storage box through the stone falling pipeline, and the stone slag stored in the stone storage box is discharged by conducting the discharging port. The utility model solves the technical problem that the slurry discharge pipe is easily blocked or the slurry pump is easily damaged by the slag stone.

The invention discloses a cutting chain type transverse shaft type cutting mechanism suitable for a coal roadway and a half-coal-rock roadway and a heading machine. The cutting mechanism comprises a main machine frame, a motor, a cutting chain, a left cutting head and a right cutting head, the motor, the cutting chain, the left cutting head and the right cutting head are installed on the main machine frame, the left cutting head and the right cutting head are located on the two sides of the cutting chain respectively, and the motor drives the cutting chain to rotate and drives the left cutting head and the right cutting head to rotate; wherein a plurality of middle cutting teeth are distributed on the cutting chain; a plurality of left cutting teeth are distributed on the left cutting head; a plurality of right cutting teeth are distributed on the right cutting head; at least part of the middle cutting picks are matched with the left cutting picks to form a spiral line shape, and at least part of the middle cutting picks are matched with the right cutting picks to form a V shape. The problem that an existing cutting mechanism is low in cutting efficiency is solved.

The invention belongs to the field of urban shield tunnel resistivity method detection. According to the electrical method detection device and method with the shield cutterhead and the shield as the power supply electrodes, a transmitter unit carried in a main control room of a shield tunneling machine is connected with a transmitting electrode unit through a cable, and the transmitting electrode unit comprises the shield cutterhead and the shield; a receiver unit arranged on a shield tunneling machine is connected with a receiving electrode unit through a cable, and the receiving electrode unit comprises a plurality of receiving electrodes arranged in shield segment gaps; the shield cutter head and the shield are used as the power supply electrodes, so that the time for arranging the power supply electrodes in the hole is saved, and the detection efficiency and the shield tunneling efficiency are improved.

A bionic rock-invading agent for silicate rock crushing and an auxiliary rock-breaking method thereof are provided, wherein an oxalic acid-sodium oxalate buffer solution OA is prepared, which comprises, by weight percentage, 0.6% to 1.1% of oxalic acid and 1.2% to 5.5% of sodium oxalate; a bionic neutral rock-invading agent ON is prepared, and the following four components, by weight percentage, are added to OA in a certain weight ratio: 0.05% to 0.3% of polyacrylamide, 1.0% to 3.1% of triethanolamine, and 0.3% to 5.5% of citric acid. 1.5%, trisodium nitrilotriacetic acid 2.0% to 5.0%, wherein the purity of polyacrylamide is ≥ 99.5%; the purity of triethanolamine is ≥ 99.5%; the purity of citric acid is ≥ 99.5%; the purity of trisodium nitrilotriacetic acid is ≥ 99.5%; during TBM excavation or oil drilling, the configured bionic rock-invading reagent is sprayed from the TBM cutter head to the face or pumped into the hollow of the drill string; thereby degrading the mechanical properties of the rock and achieving mechanical-chemical coupling rock breaking. The bionic rock-invading reagent of the present invention is neutral, has no obvious corrosiveness to mechanical rock-breaking tools, is environmentally friendly and efficient, and is particularly suitable for chemically assisted rock breaking of hard rocks such as silicate rocks.

The invention discloses an intelligent control method and system for cantilever type tunneling. The invention relates to the technical field of the full-section tunneling process. The coding layer receives an input sequence S, calculates forward and backward candidate hidden states through multiple groups of forward and backward GRU (gated loop) units, forms a hidden state sequence H, inputs the hidden state sequence H into the fuzzy processing layer for fuzzy operation processing, and generates a corrected hidden state sequence H'into the decoding layer; according to the method, various tunneling parameters such as total thrust, cutterhead power and torque are comprehensively considered, a rich input sequence is formed through heat coding operation, comprehensive information is provided for the model, and therefore the accuracy of tunneling speed prediction is improved. The bidirectional Seq-Bi-GRU neural network can capture time sequence dependence and long-term memory effect in data, and compared with a traditional BPNN neural network, the method has higher generalization ability and prediction precision when processing complex sequence data.

The roadway supporting system comprises a roadway and a freezing piece, the roadway comprises a top plate, a bottom plate and a side wall, the top plate and the bottom plate are oppositely arranged at intervals in the vertical direction, the upper end and the lower end of the side wall are connected with the top plate and the bottom plate respectively, and an installation hole is formed in the top plate. At least part of the mounting hole is located above a to-be-tunneled coal body in the roadway, a freezing medium is arranged in the freezing piece, the freezing piece is arranged in the mounting hole in a penetrating mode, and the freezing piece is used for freezing a rock stratum around the mounting hole to form a freezing layer so that the to-be-tunneled coal body can be excavated after the rock stratum around the mounting hole is completely frozen. The roadway supporting system has the advantages of being simple in structure, good in waterproof performance and the like.

This invention provides a spiral drilling mining robot and an adaptive cutting control method, belonging to the field of mining equipment technology. The technical solution is as follows: a spiral drilling mining robot includes a tracked walking mechanism, a drill rod unit, a power system, a support device, and a sliding platform device; this invention also provides an adaptive cutting control method, including the following steps: first, borehole preparation and gas detection; second, adaptive borehole mining operation; third, drilling completion and equipment reset; the beneficial effects of this invention are: this invention uses a gas concentration sensor on the drill bit to detect the gas concentration in real time and automatically adjusts the nitrogen injection volume, effectively controlling the gas concentration. Simultaneously, the equipment can dynamically adjust the drill bit rotation speed and propulsion speed according to changes in drill bit load and rock hardness, improving tunneling efficiency; furthermore, the tunneling equipment features a modular design, enabling the equipment to flexibly cope with drilling requirements at various depths.

The present invention belongs to the technical field of cooling systems for tunnel boring machines, and specifically relates to a non-stop tunnel boring cooling system and a non-stop tunnel boring cooling method for tunnel boring machines. The non-stop tunnel boring cooling system for tunnel boring machines of the present invention includes an internal circulation cooling system, an external circulation cooling system and a main heat exchanger, and also includes a cold storage system. The cold storage system can perform heat exchange with the main heat exchanger when the external circulation cooling system stops, so that the tunnel boring machine can still work normally. When the pipe section is connected, the external circulation cooling system and the main heat exchanger are used again for heat exchange. Since the tunnel boring machine will not stop due to the connection of the pipe section during the whole process, the tunnel boring machine has a higher tunnel boring efficiency. In the non-stop tunnel boring cooling method for tunnel boring machines of the present invention, when the tunnel boring machine connects the pipe section, the cooling system of the tunnel boring machine can also be cooled by the cold storage system, so that the tunnel boring machine can work normally and the tunnel boring machine has a higher tunnel boring efficiency.

The utility model relates to a secondary transportation lap-joint turning device of a heading machine, and belongs to the technical field of roadway heading processes. Comprising at least two secondary conveying belt conveyors, every two adjacent secondary conveying belt conveyors are connected through a lap joint turning mechanism, each lap joint turning mechanism comprises a hanging frame, each hanging frame is welded to the bottom of a headstock of the previous secondary conveying belt conveyor, each hanging frame is hinged to a rotating frame through a pin shaft A, and each rotating frame can rotate relative to the corresponding hanging frame. A supporting frame for preventing the rotating frame from falling off is arranged at the bottom of the hanging frame, a transverse plate of the rotating frame penetrates through an inner cavity of the supporting frame and is in lap joint with a bottom plate of the supporting frame, and the rotating frame is hinged to a machine tail frame of the next two-way rubber belt conveyor through a pin shaft B. The double-conveying lap-joint turning device has the advantages that the double-conveying lap-joint turning device is used for replacing a raking loader and a side dumping type loader, the problem of coal gangue flow conveying restriction of roadway large-angle turning construction is solved, the continuity of a coal gangue flow system is improved, and the roadway tunneling efficiency is improved.

The invention discloses a construction method for matched use of a split type anchor rod drill carriage and a heading machine, which comprises the following steps: the heading machine reaches a head-on working face and cuts the upper part of the working face, and the split type anchor rod drill carriage grabs a separated type support platform with a steel mesh and a steel belt; the separated supporting platform reaches the interior of the cutting space, and supporting legs are opened to temporarily support a top plate; the split type anchor rod drill carriage and the split type supporting platform are unhooked and retreat, and the heading machine continues to cut the lower portion of the working face; the split type anchor rod drill carriage carries out supporting operation; after the supporting operation is completed, the heading machine is driven to the working face to continue the construction of the next cycle; the defect that a single-rail hydraulic anchor rod drill carriage is used in cooperation with a heading machine is overcome, the separated supporting platform is fully utilized, and through separation and combination, construction safety is guaranteed, and roadway heading efficiency is improved.

The utility model relates to the technical field of temporary supporting, in particular to an onboard temporary supporting device of a rock roadway heading machine, which comprises a base, a lifting driving device, a supporting beam and a telescopic beam. The two supporting beams are arranged in parallel and located on the upper side of the base, any supporting beam is connected with the base through two lifting driving devices, the two telescopic beams are arranged in the two supporting beams in a sliding mode respectively, and telescopic drivers are arranged between the telescopic beams and the supporting beams; a sleeper is arranged at the upper end of the telescopic beam, and a protective net and a W-shaped steel belt are arranged at the upper end of the sleeper; a lug plate connected with a heading machine is arranged at the lower end of the bottom plate. The telescopic beam capable of ascending, descending and stretching is adopted to support the protecting net and the W-shaped steel belt, the protecting net and the W-shaped steel belt can be conveniently moved to the position of a top plate, and temporary supporting is achieved. The bottom plate is connected with the lug plate fixedly arranged on the heading machine through the pin shaft, so that the dismounting and the mounting are convenient, and the normal work of the heading machine is not influenced.

The invention discloses a dual-purpose cutting chain type transverse shaft type cutting mechanism for a coal roadway and a rock roadway and a heading machine. The cutting mechanism comprises a machine frame, a motor, a cutting chain, a left cutting head and a right cutting head, the motor, the cutting chain, the left cutting head and the right cutting head are installed on the machine frame, the left cutting head and the right cutting head are located on the two sides of the cutting chain respectively, and the motor drives the cutting chain to rotate so as to drive the left cutting head and the right cutting head to rotate; wherein a plurality of first left cutting teeth and a plurality of first right cutting teeth are distributed on the cutting chain; a plurality of second left cutting teeth are distributed on the left cutting head; a plurality of second right cutting teeth are distributed on the right cutting head; the first left cutting picks and the second left cutting picks are matched to form a right spiral line shape, and the first right cutting picks and the second right cutting picks are matched to form a left spiral line shape. The problem that an existing cutting mechanism is low in cutting efficiency is solved.

An open-type TBM includes a TBM main unit and supporting equipment. The TBM main unit includes a cutterhead, a front shield, a tensioning shield, and propulsion devices. The cutterhead is located at the front of the front shield. The front shield is connected to the tensioning shield via two sets of vertically symmetrically arranged propulsion devices and two sets of horizontally symmetrically arranged propulsion devices. The four sets of propulsion devices are connected in series along the circumference of the front shield. Each set of propulsion devices includes two propulsion cylinders, arranged in a V-shape with their front ends close to each other and their rear ends far apart. The tensioning shield has support shoes on its side for tensioning the rock wall. The supporting equipment includes a trailer and an advance drilling bridge. The front of the advance drilling bridge is connected to the rear of the trailer. The trailer is connected to the bottom of the tensioning shield via a towing cylinder. The trailer is equipped with a rear-support belt conveyor, an arch frame installer, and a bolt drilling rig, arranged sequentially from front to back. The advance drilling bridge is equipped with a shotcrete system and an advance drilling rig, arranged sequentially from front to back. This design can adapt to widening excavation conditions and small turning radius starting requirements.

The utility model relates to the technical field of tunnel construction, in particular to a crusher and a heading machine comprising the same, and the crusher comprises a feeding cabin, a crushing mechanism and a discharging cabin which are connected in sequence; the crushing mechanism comprises a first-stage crushing mechanism and a second-stage crushing mechanism which are connected in sequence, the first-stage crushing mechanism is connected with the feeding cabin, and the second-stage crushing mechanism is connected with the discharging cabin; the secondary crushing mechanism comprises at least two groups of single-tooth roller structures, and a flow guide block is arranged above a channel between the two groups of single-tooth roller structures; and a discharging hole of the discharging cabin is connected with a discharging and slurry discharging pipe. According to the crusher provided by the utility model, coarse crushing is carried out on large-particle-size slag stones through the first-stage crushing mechanism, fine crushing is carried out through the second-stage crushing mechanism, and two-stage crushing operation is carried out, so that the requirement of a special stratum which contains a large number of large boulders and is rich in sandy cobbles on the particle size of the crushed slag stones is met, and stagnant discharge is avoided; at least two groups of single-tooth roller structures are adopted to crush slag stones and sundries, so that the crushing efficiency is high, and the requirement of the shield tunneling machine on the tunneling efficiency is met.

The utility model relates to the technical field of mining, and provides a rock stratum drilling cutterhead and a drilling assembly, the rock stratum drilling cutterhead comprises a cutterhead main body, a cutter assembly, a center pre-crushing assembly and an edge pre-crushing assembly; the center pre-crushing assembly is used for pressing a rock stratum located in the center of the cutter head body so that the rock stratum in the center can be fractured. The edge pre-crushing assembly is used for pressing a rock stratum at the edge which is located in the cutter head main body and located outside the center, so that the rock stratum at the edge is fractured, and a fracturing crack of the rock stratum at the edge is connected or crossed with a fracturing crack of the rock stratum at the center; and the cutter assembly rotates to cut the fractured rock stratum. According to the utility model, the center pre-crushing assembly and the edge pre-crushing assembly can be used for fracturing rocks at axial frequency, so that the structural strength and rigidity of the rocks cut by the cutter assembly are dynamically reduced in real time, the tunneling efficiency is improved, and the tunneling difficulty is reduced.

The invention belongs to the technical field of open caisson control, and discloses a vertical shaft beam plate bottom sealing device and a construction method thereof.The vertical shaft beam plate bottom sealing device comprises a ring beam, a sliding rail, a beam plate and at least two limiting assemblies, the ring beam is arranged at the upper end of a shaft blade foot and matched with the sliding rail to serve as a running track of a heading machine, sufficient operation space is provided for the heading machine, and the heading efficiency is improved. In the bottom sealing stage, the sliding rails and the ring beams form a supporting frame, and local deformation of the beam plates is prevented; the limiting assembly can effectively ensure that the beam plate is fixed relative to the sliding rail, and the beam plate is prevented from shifting or loosening due to external force in the bottom sealing process; the grouting holes and the grout overflow holes are formed in the beam plate, redundant mud at the well bottom can be effectively discharged in the grouting process, and the uniformity of the bottom sealing concrete layer is ensured. According to the vertical shaft beam plate bottom sealing device and the construction method thereof, the thickness of the bottom sealing concrete layer is reduced, meanwhile, the excavation space of the tunneling machine is guaranteed, the tunneling efficiency is improved, the thickness uniformity of the bottom sealing concrete layer can be guaranteed, and the overall bottom sealing structural strength is improved.

The present invention discloses an opening and closing shovel plate device for a tunnel boom boring machine, comprising an opening and closing seat mounted on an assembly frame, an active opening and closing mechanism mounted on the opening and closing seat, and two transfer rods symmetrically connected to the opening and closing seat, an active material cleaning mechanism mounted on one end of each transfer rod away from the closing seat, and two vertical drive mechanisms symmetrically mounted on the lower end of the opening and closing seat, and the two vertical drive mechanisms are connected to the opening and closing shovel plates arranged at the lower ends of the two active material cleaning mechanisms. The present invention can efficiently remove waste generated by cutting, avoid waste accumulation on both sides of the boom boring machine and affect the excavation operation, reduce the work intensity of waste removal, and improve the excavation efficiency of the boom boring machine. The present invention is applicable to the technical field of cleaning of cut waste during tunnel construction.

The utility model discloses a rock drift drilling and anchoring all-in-one machine which comprises a body part, a working platform arranged on the upper portion of the body part and a drill arm mechanism arranged on the working platform, a drilling mechanism is arranged at the free end of the drill arm mechanism, and a rock drill is arranged on the drilling mechanism. The device further comprises an aerial fog lubricating mechanism used for providing lubricating oil fog for the rock drill. The aerial fog lubricating mechanism comprises an air compressor set, an air storage tank set and a pneumatic triple piece which are sequentially connected through pipelines, the air compressor set and the air storage tank set are arranged on the upper portion of the rear middle portion of the body part, the pneumatic triple piece is arranged on the drill arm mechanism, and the pneumatic triple piece is used for filtering compressed air and then carrying oil mist into the rock drill. The effect of lubricating the rock drill is achieved. By integrating the drilling mechanism, the multifunctional drilling arm, the aerial fog lubricating mechanism and the electrical system, the drilling machine can be suitable for various tunneling processes, the product application range is expanded, the industry requirements are met, the tunneling efficiency is improved, and comprehensive improvement in the aspects of safety, efficiency, sustainability and quality standardization is achieved.