26results about How to "Improve tunneling efficiency" patented technology

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.

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 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.

The application provides a rock breaking device and a rock breaking method thereof. The rock breaking device comprises a mechanical arm having a fixed end and a movable end, a moving device to which the fixed end of the mechanical arm is connected, a cutter head arranged at the movable end of the mechanical arm, and an auxiliary rock breaking device arranged on the cutter head and used for pre-cutting rock before the cutter head cuts the rock to form a cutting seam on a preset cutting path of the cutter head. The application solves the problems of low hard rock breaking efficiency and high wear rate of a boom roadheader.

The present application relates to the technical field of shield construction, particularly to a slurry shield cutterhead mud cake digestion system based on ultrasonic waves, comprising an ultrasonic transducer assembly, a power module and a driving assembly, a plurality of ultrasonic transducer assemblies are respectively fixed at openings of cutterhead panels, each of the ultrasonic transducer assemblies comprises a protective shell cover and an ultrasonic transducer, a line protection tube is connected to the top of the protective shell cover, a waterproof joint is arranged in the protective shell cover and is plugged on a plug of the ultrasonic transducer, a connecting line is arranged in the line protection tube and extends into the protective shell and is connected to the waterproof joint. The cavitation effect of ultrasonic waves on the cutterhead mud cake in the circulating slurry is used to digest and peel off the cutterhead mud cake layer by layer, so that the cutterhead mud cake is removed.

This application provides a full-cycle management system for tunneling machine cutterhead hobs, comprising: a hob status tracking module for real-time tracking and recording of the position and mileage of each hob using a calibration-then-tracking method; a voice control module for obtaining the current measured wear value of the corresponding hob or controlling the rotation angle of the cutterhead based on voice information; a hob wear prediction module for real-time prediction of the current wear value of the hob based on a preset prediction model; an anomaly warning module for determining whether abnormal wear has occurred in the cutterhead hobs based on the wear value and issuing a timely warning when abnormal wear occurs; and a data processing and storage module for receiving and recording the data output from each module, and real-time matching and storing the hob data with surrounding rock parameters, tunneling parameters, and cutter maintenance status in a database. This application realizes full-cycle management of the cutterhead hobs from parameter acquisition, data processing and storage, wear prediction, anomaly alarms to auxiliary control for cutter inspection and replacement.

This invention belongs to the field of coal mine rockburst and gas control, specifically involving a coal seam mining method based on directional drilling and hydraulic fracturing for depressurization and gas extraction. The method includes tunneling and hauling uphill, while simultaneously conducting depressurization and pre-gas extraction of the entire first mining face area through directional drilling from the surface. Then, negative pressure ventilation is implemented through the directional drilling on the surface. After the hauling and uphill tunneling is completed, the first mining face can be started immediately, with simultaneous return air tunneling. This significantly improves the timing and efficiency of starting the first mining face, allowing for faster recovery and cost reduction. Furthermore, during negative pressure ventilation at the surface using directional drilling, the gas and coal dust generated at the tunneling face flow with the airflow through the directional drilling to the surface, minimizing health impacts on workers at the tunneling face and greatly improving the safety of the working environment.

The invention relates to the technical field of coal mining, in particular to a coal mine tunneling system which comprises a base, a crawler walking device is installed at the bottom of the base, a protection frame is fixedly installed at the top of the base, a tunneling mechanism is installed on the protection frame, and the tunneling mechanism comprises a supporting piece, a driving piece and a cutting assembly; the supporting piece is installed on the protection frame, the cutting assembly is installed on the top of the supporting piece, and the driving piece is installed on the inner side of the protection frame so as to drive the cutting assembly. After the auxiliary drill bit makes contact with the rock stratum, circumferential pressure is applied to the rock stratum, axial pressure can also be applied to the rock stratum, then the rock stratum can be rapidly crushed, the crushing efficiency of the rock stratum is further greatly improved, and the overall tunneling efficiency is further improved; meanwhile, the abrasion degree of the auxiliary drill bit can be reduced, and the service life of the auxiliary drill bit can be greatly prolonged.

The invention discloses an ultra-large diameter slurry shield cutterhead mud cake resistant muck dispersant and a preparation method thereof, and the ultra-large diameter slurry shield cutterhead mud cake resistant muck dispersant comprises the following components by mass: 1-5 parts of a homopolymer sodium polyacrylate salt, 1-5 parts of alkyl glycoside, 0.5-2 parts of fatty alcohol polyvinyl ether sodium sulfate, 0.2-1 part of cocoanut fatty acid diethanolamide, and 0.1-0.5 part of a deionized agent. The cleaning agent is prepared from the following components in parts by weight: 1.5 to 5 parts of sodium di-sec-octyl maleate sulfonate, 0.1 to 0.5 part of hydroxypropyl methyl cellulose, 0.6 to 1.5 parts of polysorbate, 1.5 to 2 parts of fatty acid methyl ester sulfonate, 0.2 to 0.5 part of sodium chloride and 0.2 to 0.5 part of a pH regulator. The probability of mud cake formation of the cutterhead when the super-large-diameter shield passes through the clay-containing stratum can be reduced, so that the tunneling efficiency of the super-large-diameter shield is remarkably improved.

This invention provides a method and system for realizing unmanned tunneling face operations, comprising: dividing the equipment group operating at the tunneling face into N independently operating rigid body groups; installing an inertial navigation system and a laser target on the main rigid body equipment of each rigid body group; designing and installing a measurement and positioning robot; the measurement and positioning robot includes an inertial navigation system and N automatic target-finding total stations; establishing a digital twin platform for the unmanned tunneling face, realizing pose calculation, fault diagnosis, disaster early warning, collaborative control, scene updates, and equipment start-up, shutdown, and maintenance decisions for all equipment at the tunneling face, and providing remote intervention and human-machine interaction interfaces to achieve unmanned operation at the tunneling face. This invention can achieve precise measurement, positioning, and attitude control of all equipment such as excavators, drillers, anchors, supports, transporters, and tunnelers at the tunneling face, realizing unmanned operation with zero accidents and zero faults at the tunneling face, providing technical support for avoiding personal injury and significantly improving tunneling efficiency.

The application discloses a kind of cantilever type tunneling machine cutting drilling device, including two symmetrical installation in the rotation mechanism two sides of multi-drill position type drilling mechanism, two the multi-drill position type drilling mechanism coaxial arrangement, and the rotation mechanism is installed between the rotary mechanism and adapter arm, the adapter arm is detachably connected with hydraulic cantilever, the rotary mechanism is used to drive rotation mechanism and two multi-drill position type drilling mechanism along the rotation axis of rotation, rotation mechanism is used to drive two multi-drill position type drilling mechanism along respective axis rotation.The application can effectively improve the efficiency of operation and the durability of equipment, realize multi-angle flexible tunneling, integrate multiple function modes, can switch drilling mode as needed to adapt to different hardness of sand layer, and due to the modular structure, improve the convenience of maintenance.The application is suitable for the technical field of tunnel construction equipment.

The present application belongs to the technical field of coal mine machinery, and particularly relates to a device for improving the stability and auxiliary propulsion force of a large-gradient roadheader, which solves the problem that the current lack of an auxiliary propulsion force loading mode that simultaneously improves the cutting stability and enhances the traction force of the large-gradient roadheader, resulting in the inability to realize the stable large-gradient continuous advancement of the roadheader and the problem of a large traction force, and comprises a support and traction device arranged on a track walking system of the roadheader, the support and traction device comprising a fixing device, a support device and a sliding device. The present application creatively proposes, for the first time, the use of a roadheader oil cylinder to push a support frame and form two stable fixing points on both sides of a coal wall, and then uses a sliding oil cylinder to push a track, thereby providing stable and reliable auxiliary traction force for the large-gradient walking of the roadheader, and preventing the roadheader from swinging during large-gradient cutting.

This utility model relates to a turning device and coal mining equipment. The turning device includes a traction component, a pin, a fixing frame, and a base. The traction component has a pin hole that extends through the traction component in a vertical direction. The pin rotates through the pin hole, and its axis of rotation is parallel to the vertical direction. The pin is used to connect to a roadheader. Both the traction component and the fixing frame are mounted on the base. The fixing frame has a fixing part for connecting a transfer machine. This utility model's turning device can adapt to different turning angles of the roadheader, which helps improve tunneling efficiency and save manpower.

The utility model discloses a coal mine shed roadway temporary supporting device which comprises a telescopic top frame, the telescopic top frame comprises fixed arms arranged in parallel, telescopic arms driven by hydraulic telescopic oil cylinders are arranged in the fixed arms, a second connecting rod is fixedly connected between the front ends of the telescopic arms on the two sides, and a beam trimmer is arranged on the second connecting rod. The telescopic stand columns are symmetrically arranged below the telescopic top frame and comprise fixing columns, telescopic columns driven by lifting hydraulic oil cylinders are arranged in the fixing columns, the front ends of the telescopic columns on the two sides are hinged to the lower portions of the fixing arms on the two sides respectively, and the lower ends of the fixing columns on the two sides are hinged to grafting combined fasteners. The grafting combination fasteners on the two sides are fixedly connected to the two sides of a large frame of the heading machine respectively, and a connecting column is connected between the fixing columns on the two sides and connected to the upper portion of a cutting arm of the heading machine through a turnover hydraulic cylinder. The device can safely, reliably and quickly support the empty roof area, the safety of tunneling production is greatly improved, the production efficiency is greatly improved, and the device is convenient to use.

The present application relates to the technical field of tunnel emergency rescue, in particular to a tunnel collapse emergency rescue path generation method and system, wherein the tunnel collapse emergency rescue path generation method comprises the following steps: obtaining advanced geological prediction data; dividing the collapse into multiple crossing sections and assigning values; selecting an i-th crossing point on the i-th crossing section; selecting an i+1-th crossing point on the i+1-th crossing section with the steering performance of the shield machine as the boundary condition; repeating the selection of the crossing points until the predetermined rescue position is reached; connecting the crossing points to obtain a candidate path; obtaining at least two candidate paths, and selecting one candidate path as the rescue path based on the tunneling performance of the shield machine. The present application can overcome the technical problem that the existing tunnel rescue path planning lacks consideration of the steering performance and tunneling performance of the shield machine, which cannot guarantee the tunneling efficiency and speed of the shield machine, and easily leads to obstruction of rescue operations.

The utility model relates to the technical field of full face tunnel boring machine discloses a kind of leakage slag prevention devices of expansion hole, for expansion hole, including front shield, slag baffle, first hydraulic device and second hydraulic device, wherein, the leakage slag space is formed between the front shield with the hole;The slag baffle is located in the leakage slag space;The first hydraulic device is movably arranged on the front shield, the output shaft of the first hydraulic device is drivingly connected with the slag baffle, so that the slag baffle longitudinal reciprocating movement and the bottom wall of the leakage slag space are attached;The second hydraulic device is movably arranged on the front shield, the output shaft of the second hydraulic device is drivingly connected with the slag baffle. Leakage slag space can be flexibly adjusted according to actual situation, effectively block leakage slag space, solve slag stone leakage problem, avoid shutdown cleaning due to slag stone accumulation, save time and manpower, improve tunneling efficiency.

This invention provides a method and system for determining the timing of arch reinforcement construction in soft rock deformation sections of open-face TBM tunnels. The method includes: obtaining a first deformation threshold for a typical steel arch within the tunnel section entering its ultimate bearing capacity; monitoring the deformation of the steel arch to be tested within the tunnel section; and determining whether arch reinforcement is needed at the steel arch based on the first deformation threshold and the monitored deformation values. This invention establishes a decision-making mechanism for arch reinforcement based on steel arch deformation monitoring values. It determines whether reinforcement is needed by analyzing the relationship between the steel support deformation monitoring values ​​and the deformation threshold, effectively balancing the conflict between TBM tunneling and support, and improving TBM tunneling efficiency. The decision criteria are simple and clear, allowing for precise determination of reinforcement timing and avoiding problems such as increased construction risks, increased investment, and extended construction periods caused by subsequent arch replacement.

The utility model provides a crushing and deslagging system and a small shield tunneling machine comprising the same, and belongs to the technical field of tunnel construction equipment. Comprising a spiral conveyor, an inner cone crusher, a slurry discharge pump assembly and a slurry discharge pipeline, one end of the screw conveyor is connected with a front shield of the small shield, and the other end of the screw conveyor is connected with a feeding end of the inner cone crusher; the inner cone crusher is fixedly mounted on a rear matched trolley of the small shield through a bottom plate, and the discharge end of the inner cone crusher is connected with one end of the slurry discharge pump assembly; one end, far away from the inner cone crusher, of the slurry discharge pump assembly is connected with one end of the slurry discharge pipeline; and the other end of the slurry discharging pipeline extends out of the tunnel. According to the small slurry balance shield tunneling machine, the screw conveyor and the multi-stage cone crusher are adopted for secondary crushing of large pebbles, the adaptability of the small slurry balance shield tunneling machine in a water-rich sand-gravel stratum is improved, the problem of stagnant discharge is solved, and the tunneling efficiency is improved.

This utility model discloses a dust removal and slag discharge system for a variable-diameter reaming shaft tunneling machine. The technical problem it addresses is how to control dust during slag discharge from the reaming shaft tunneling machine. The dust removal and slag discharge system includes a dust removal unit for removing dust from the slag in the slag chamber, a sealing curtain for separating the slag chamber from the main transport tunnel, and a slag conveying unit for transporting the slag from the slag chamber through the sealing curtain to the main transport tunnel. The sealing curtain in this technical solution separates the slag chamber from the main transport tunnel, preventing dust from the slag chamber from spreading to the main transport tunnel. The dust removal unit directly removes dust from the slag in the slag chamber, and the slag in the slag chamber can be transported to the main transport tunnel by the slag conveying unit, and then transported out by the slag removal equipment, greatly improving the construction environment.

This application discloses a semiconductor structure and its manufacturing method. The semiconductor structure includes a substrate, a first insulating layer, a floating gate, an erase gate, and a second insulating layer. The first insulating layer forms an upwardly extending step at the end of the floating gate, lifting the end of the floating gate away from the substrate. The sidewall of the floating gate at the lifted end is recessed inward to form an outwardly extending sharp corner. The erase gate is disposed outside the sharp corner, and the second insulating layer is located between the floating gate and the erase gate. This application, by lifting the end of the floating gate with a step in the first insulating layer and forming a sharp sidewall, can enhance the local electric field concentration effect between the floating gate and the erase gate during the erase operation, effectively improving electron tunneling efficiency. The step structure can suppress the electric field interference of the floating gate sharp corner on the substrate, helping to extend the lifespan. This application can significantly improve the erase speed and operating efficiency without significantly increasing process complexity, and improve the durability and reliability of flash memory devices, and can be widely applied in the field of semiconductor technology.

The invention discloses a control method and system of a vertical shaft heading machine, and is applied to the field of vertical shaft heading machines, the method comprises the following steps: controlling the vertical shaft heading machine to adjust the working state thereof by using a received control signal, the control signal generation process comprises the following steps: obtaining geographical environment change information, and determining the working state of the vertical shaft heading machine based on the geographical environment change information; determining the stratum sudden change intensity of the working area; determining an energy consumption disturbance index at least based on the stratum sudden change intensity; processing the energy consumption disturbance index to obtain a predicted energy consumption change rate of the working area; determining energy consumption prediction information based on the predicted energy consumption change rate and the corresponding stratum sudden change intensity; acquiring electrical sampling data; verifying initial risk probability data determined based on the electrical sampling data to generate fault risk information; and generating a control signal based on the energy consumption prediction information and the fault risk information. According to the control method and system of the vertical shaft heading machine, the parameter adjustment accuracy is remarkably improved through accurate analysis of data.

The utility model relates to the technical field of submarine shaft construction, disclose a kind of slurry balance anti-well drilling machine, comprising: anti-pulling driving device, suitable for installation on seabed;Tunneling host, including cutterhead and shield body;Drill rod, its upper end is drivingly connected with anti-pulling driving device, its lower end is connected with tunneling host;Anti-pulling driving device carries tunneling host and provides upward tunneling driving force for tunneling host.Slurry balance anti-well drilling machine is not set to push system, directly through anti-pulling driving device carries tunneling host and provides upward tunneling driving force for tunneling host, applicable to hard rock formation, improve tunneling efficiency, shorten construction cycle, further reduce the risk of water seepage, enhance the adaptability of equipment, expand the site selection range of nuclear power plant or deep sea sewage;And because there is no push system, will not occupy the internal space of main tunnel and squeeze the space of fire escape passage.

The invention discloses an SIMP-PINN coupling design optimization method for a large shield cutterhead, and relates to the field of engineering structure design, and the method comprises the steps: obtaining a basic shield cutterhead structure, setting a constraint protection region, and setting a variable design region on the basic shield cutterhead structure; establishing an SIMP topological optimization module, and carrying out multiple times of structure weight reduction processing in the variable design area to generate a plurality of candidate cutterhead structures; constructing a PINN physical performance evaluation model, and performing cutterhead strength evaluation on the plurality of candidate cutterhead structures to obtain a plurality of candidate cutterhead strengths; according to the preset cutterhead strength, the multiple candidate cutterhead strength and the multiple candidate cutterhead structures, structure optimization weight reduction processing is conducted in the variable design area through iteration of an SIMP topological optimization module, and the optimal cutterhead design structure is obtained. The problems that in the prior art, a design scheme cannot adapt to complex geology, the design iteration efficiency is low, and adaptability is poor are solved.

The utility model belongs to the technical field of rotary excavating accessories, and particularly relates to a rotary excavating device for roadway tunneling, which comprises a connecting piece and an assembling frame, a drill bit base body is arranged at the bottom of the connecting piece, an assembling piece is fixedly arranged at the top of the connecting piece, the assembling piece is U-shaped, and a plurality of transverse assembling insertion holes are symmetrically formed in two sides of the assembling piece; the assembling frame is arranged on the assembling part in a sleeving mode, an assembling cavity is formed in an inner cavity of the assembling frame, and two movable plates moving in the opposite directions are arranged at the positions, located on the inner side of the assembling part, in the assembling cavity. According to the utility model, a bolt type quick release structure of the assembly insertion rod and the assembly insertion hole is adopted, and the left-hand and right-hand thread transmission of the driving rod is matched, so that the drill bit can be quickly mounted and dismounted without a special tool, the replacement time is greatly shortened, and the labor intensity is reduced; by means of dovetail groove matching of the limiting block and the limiting groove and an inserted link locking mechanism, a double torque transmission path of vertical positioning and horizontal locking is formed, and the power transmission stability and the tunneling efficiency are improved.

The utility model provides a washing and vibrating integrated shield tunneling machine muddy water bin grating device which comprises a grating frame and a plurality of grating bars, a pipeline channel is arranged in the grating frame, a plurality of cleaning devices are connected to the pipeline channel, and the cleaning devices are arranged on the back face of the grating frame. A plurality of grid bars are horizontally arranged in the grid frame in parallel, a vibration device is arranged at one end of each grid bar, and the vibration devices are located on the back face of the grid frame. According to the embodiment of the utility model, the cleaning device and the vibrating device are arranged on the back surface of the grid, so that the influence of front slurry impact on the device is avoided, and clay, sand grains and blocky muck attached to the grid bars can be scoured and shaken off through circular cleaning of vibration shake-off and water flow scouring in the tunneling process of the shield tunneling machine, so that the working efficiency is improved. Massive clay is effectively prevented from entering a subsequent slurry discharging pipe, the blocking rate of grid bar gaps is greatly reduced, and stable operation of a slurry circulating system is guaranteed.