19 results about "Underwater blast" patented technology

The invention discloses a waterproof and pressure-resistant acceleration impact sensor, and relates to the technical field of impact detection, the waterproof and pressure-resistant acceleration impact sensor comprises a base, the bottom of the base is provided with a mounting screw groove, the top of the base is fixedly provided with a supporting stud, the outer ring of the supporting stud is sleeved with an inner protective shell in a threaded manner, and the inner protective shell is internally provided with a sensitive element. The device comprises an inner protective shell, the outer side of the inner protective shell is wrapped with an outer protective shell in a protective mode, a buffer reset mechanism is installed at the top of the outer protective shell, and an outer ring damping mechanism is installed in the buffer reset mechanism. The waterproof sealing performance, the impact resistance and pressure resistance and the signal transmission stability are remarkably improved, the problems that a traditional sensor is prone to leakage, signal distortion and connection looseness in extreme environments such as underwater explosion are effectively solved, and the sensor is suitable for complex application scenes such as wide temperature and high-frequency impact.

The application provides an anti-explosion underwater soft robot, and belongs to the field of robots.The problem that high transient energy of underwater explosion easily causes damage to internal components and circuits is solved.The anti-explosion underwater soft robot comprises a flexible circuit layer, a plurality of circuit modules are arranged on the flexible circuit layer, and the circuit modules are flexibly connected; a non-Newtonian fluid buffer layer is wrapped outside the flexible circuit layer; an elastic buffer layer is wrapped outside the non-Newtonian fluid buffer layer; and a driving unit is connected with the elastic buffer layer and used for driving the robot to move.The anti-explosion underwater soft robot is mainly used for underwater safety detection and underwater resource exploration.

The invention provides a hull beam structure water explosion motion response test system and a test and analysis method thereof. The ship body beam structure water explosion motion response test system comprises a photographing device, a shutter control system of the photographing device has nanosecond-level time precision, and the number of photographed frames per second is not less than 10000; and the processing device is electrically connected with the photographing device, the processing device is used for adjusting photographing parameters of the photographing device, and the processing device has video interception, storage and format conversion functions so as to clearly and uninterruptedly record the whole movement process of the measured object. According to the test system provided by the invention, the motion data of the hull beam structure under the action of underwater explosion is measured in real time by establishing the hull beam structure underwater explosion dynamic response test device based on high-speed photography, and the dynamic response data of the hull beam structure is analyzed in combination with a proposed hull beam structure dynamic response data analysis method; the dynamic process of motion of the hull beam structure is restored more accurately, so that data support is provided for evaluating the damage state of the hull beam structure.

The embodiment of the application discloses a numerical calculation method for underwater explosion bubble movement and related equipment, a grid area is generated, simulation is performed in combination with multiple preset parameters, an area fraction is accurately determined to determine an interface position, geometric method is used to calculate a phase volume fraction flux and iterative simulation is performed, so that the maximum radius of the first pulsation of the bubble in the underwater explosion process and the first pulsation period are obtained, the whole process of the bubble movement can be finely simulated, and the maximum radius and the period of the first pulsation are accurately obtained.

The invention discloses a precise positioning and depth control method for underwater drilling blasting, relates to the technical field of underwater blasting, and aims to effectively control blast hole positioning deviation through data real-time linkage calibration, collect water level data through double-source cooperation of an automatic moisture indicator and a water level pressure sensor, eliminate interference and ensure data precision. An intelligent ultra-deep value decision-making model based on machine learning is constructed, historical engineering data and current actual measurement parameters are combined, an optimal ultra-deep value is automatically output, and in the trial explosion optimization stage, an optimal parameter combination is formed by monitoring the vibration speed and observing the explosion effect and optimizing the explosion parameters; a layered charging structure and a hole-by-hole delay detonating network are adopted, the maximum single-section detonating explosive amount is hierarchically controlled according to the distance of a protected object, vibration and shock wave data are continuously monitored in the blasting process, and parameters are adjusted immediately when the data exceed the standard; and the data is fed back to the intelligent model to complete iterative optimization, so that more accurate parameter support is provided for subsequent blasting.

The application discloses a mapping method for evaluating human body impact damage degree based on animal injury condition equivalence, and belongs to the technical field of impact damage biomechanics, and comprises the following steps: constructing a whole-body high-fidelity biomechanical model of different species, applying underwater explosion vibration impact loads with different intensities to the model to obtain damage modes; statistically classifying the damage modes, integrating the damage modes to form a damage database, quantitatively calculating the damage in the damage database by using a new damage severity scoring system, selecting multiple physical factors affecting the biological damage degree, screening out two key physical quantities with the highest contribution rate to define scaling coefficients, and drawing a mapping atlas for evaluating the human body impact damage degree based on animal injury condition equivalence; the mapping atlas of the injury condition across species is established by constructing the multi-species biomechanical model and combining principal component analysis, and the accurate evaluation from animal experimental data to the human body damage degree under the underwater explosion vibration impact environment is systematically realized.

The application provides a controllable underwater explosion ice-breaking bomb, and belongs to the technical field of ocean and inland ice-breaking. The application solves the problems that the existing ice-breaking device cannot independently complete the ice-breaking task and the operation stability is difficult to guarantee. The controllable underwater explosion ice-breaking bomb comprises a shell, a composite cable, a pay-off device, a control module, floating material and an operation part. The bottom of the shell is provided with an opening. A rack is arranged on the outer side wall of the shell. The pay-off device, the control module, the floating material and the operation part are arranged in the shell. The pay-off device is arranged at the top of the inner cavity of the shell. The composite cable is arranged in the pay-off device. A first mounting plate is arranged below the pay-off device. The control module is arranged on the first mounting plate. The floating material is arranged at the bottom of the first mounting plate. A second mounting plate is arranged below the floating material. The operation part is arranged below the second mounting plate. A plurality of electromagnetic locks are arranged at the bottom of the second mounting plate. The controllable underwater explosion ice-breaking bomb is mainly used for ocean and inland ice-breaking.

The invention discloses a four-reflector single-camera double-view-angle high-speed imaging method under underwater explosion impact, and the method comprises the following specific steps: S1, independently packaging a high-speed camera in a waterproof cylinder which is cylindrical on the whole, and enabling an observation window of the waterproof cylinder to be circular transparent flat explosion-proof glass, the optical axis of the high-speed camera passes through the center of the observation window and is perpendicular to the observation window plane; s2, two inner side reflecting mirror groups are symmetrically placed right in front of the observation window, and two outer side reflecting mirror groups are symmetrically placed on the two sides of the inner side reflecting mirror groups; s3, adjusting the positions, sizes and inclination angles of the two outer side reflectors; judging whether the camera equivalent included angle and the system compactness of the adjusted measurement system meet design requirements or not, and if the design requirements are met, executing the step S4; and S4, recording the measured object on the left side and the right side of the imaging plane of the camera respectively, and segmenting the image into a left image and a right image along the vertical center line to complete underwater double-view imaging.

The invention discloses an electromagnetic ejection type impact testing machine and an impact testing method.The electromagnetic ejection type impact testing machine comprises an electromagnetic ejection impact device, an impact testing table, a buffer device, a reset device and a control system, an impact hammer is slidably connected to the electromagnetic ejection impact device, and an impact testing table base body is arranged on the impact testing table; a positive wave generator and a negative wave generator are arranged at the two ends of the impact test bed base body respectively, and the impact hammer, the positive wave generator, the impact test bed base body, the negative wave generator and the buffer device are sequentially and coaxially arranged along the central axis of the impact hammer; according to the testing machine, the electromagnetic force is utilized to generate the impact load through the electromagnetic ejection principle, the energy control precision is high, the complex impact test requirements of large energy loading, positive and negative double-wave impact and the like can be met, and simultaneous simulation of the first impact wave and subsequent water hammer or bubble pulsation in the actual underwater explosion process is achieved; and the impact fatigue damage accumulation and evolution process caused by multiple underwater explosions of weapons such as multiple torpedoes and torpedoes can be effectively reproduced.

The invention provides a research device for electric spark bubbles at any position in a long and narrow pipe, and relates to the field of underwater explosion. The water tank is arranged on the water tank support, the circular pipe support is arranged in the water tank, and fixing hoops are arranged at the two ends of the support and used for clamping the tail end of the circular pipe to achieve the supporting effect. And the connecting part of the two circular tubes is connected with the circular tube connecting piece through a flange and a discharging device. The discharging device extends into two holes in the two sides of the circular tube connecting piece and then makes contact with the two holes to generate bubbles, and the other ends of the two electrodes are externally connected with a control electric box. A light source and a high-speed camera are arranged on the two sides of the water tank support, and the water tank and the high-speed camera are arranged opposite to the water tank. The in-pipe electric spark bubble experiment device can achieve the purpose of generating multiple times of secondary cavitation in a long and narrow pipeline, is simple in structure, high in repeatability and obvious in experiment effect, meets more complex and fine experiment requirements, and can be used for carrying out experiments in common laboratories.

This application relates to the field of underwater environmental protection, and in particular to a method for underwater blasting environmental protection. It includes sequentially deploying a bubble curtain and an antifouling curtain around a predetermined blasting zone; placing a package containing a water treatment flocculant within the blasting zone or in the water immediately above it; linking the release trigger condition to the blasting operation; and implementing underwater blasting to trigger the release of the flocculant, allowing it to mix with suspended sediment. The bubble curtain weakens the shock wave and, in conjunction with the antifouling curtain, hinders sediment diffusion, while the flocculant promotes the settling of suspended solids. The application also describes the flocculant composition, packaging material and placement method, the formation and fixing method of the bubble curtain and antifouling curtain, their placement distance, and the steps of monitoring water turbidity and replenishing flocculant. This application achieves the technical effects of weakening underwater shock waves, hindering the diffusion of suspended sediment, accelerating the settling of fine suspended solids, and realizing rapid water purification after blasting.

The invention discloses a submarine damage assessment method and system based on multi-source bubble energy analysis, and belongs to the technical field of underwater explosion experiments. The method comprises the following steps: acquiring image data, sound field data and pressure data of explosion bubbles in different dimensions in a submarine damage experiment process; generating explosion bubble three-dimensional point cloud data through a sub-pixel-level edge fitting algorithm and a three-dimensional point cloud algorithm; collapse characteristic data and sound field characteristic data are extracted through the sound field data; extracting bubble pulsation local features through the pressure data, and further calculating a global bubble collapse energy release value of the explosion bubbles; the method comprises the following steps: firstly, carrying out multi-source data fusion on an image, a sound field and pressure three-dimensional data through a Bayesian inversion algorithm to construct a more comprehensive and accurate three-dimensional energy density field, realizing explosion bubble actual pulsation behavior analysis of multiple data sources, and then constructing a bubble structure damage mapping model through a machine learning regression algorithm to realize explosion bubble actual pulsation behavior analysis. Therefore, accurate assessment of submarine damage is realized.

The invention discloses a YOLO11n-seg-based method for identifying the lumpiness of an experimental muck pile in a deepwater explosion container, and relates to the technical field of underwater explosion detection.The method comprises the steps that image extraction is conducted on real explosion site stone video data, and a real sample library is manufactured; stone blocks in the obtained samples are marked, data enhancement is carried out after gray processing, and a blasting lumpiness data set is constructed; an efficient multi-scale attention module and a cross-level feature aggregation module are introduced, and a backbone network and a neck network of a YOLO11n-seg network model are improved; and based on the segmentation result of the improved YOLO11n-seg network model, calculating the volume of the block, and realizing identification of the muck pile lumpiness. The method has the advantages of being high in detection accuracy and calculation efficiency, small in model size, easy to deploy and the like, is particularly suitable for underwater blasting muck pile lumpiness identification tasks, and can effectively improve engineering efficiency and safety.

The application discloses an underwater blasting electronic detonator leg wire bundling method and a bundling device. The bundling method comprises the following steps: lowering a guide pipe and drilling a hole; a through hole is arranged on the wall of the guide pipe, and a blast hole is formed after drilling; a cartridge and an electronic detonator are loaded in the blast hole along the guide pipe; a protective rope is used to bind the cartridge, one end of the protective rope extends out of the blast hole; the electronic detonator is connected with a leg wire extending out of the blast hole, the leg wire is bound on the protective rope through a waterproof adhesive tape; the guide pipe is removed, and the leg wire and the protective rope are taken out of the through hole; the leg wire is bundled; the leg wires of all blast holes are connected in parallel through a wire clamp at one end of a bus, the bus is bound on the protective rope through a waterproof adhesive tape, waterproof bags are arranged outside all wire clamps, and the waterproof bags are bound on a float, and the other end of the bus is connected with an initiator. The underwater blasting electronic detonator leg wire bundling method and the bundling device are efficient and reliable, can improve underwater charging efficiency, reduce the erosion of water flow on the leg wire of the detonator, and ensure the safety of underwater drilling blasting.

The invention provides a grillage underwater explosion response prediction method and system based on a generative adversarial network, and relates to the technical field of ship and ocean engineering structure safety assessment, and the prediction method comprises the steps: generating training data sets in batches through an automatic script and finite element software, the test parameters comprise side plate thickness, material yield strength, longitudinal space, longitudinal size, explosive equivalent and explosion attack angle, and the response data comprises a stress nephogram, a strain nephogram and a displacement deformation nephogram; and training the generative adversarial network through the training data set, wherein the trained generative adversarial network can output a predicted stress cloud picture, a predicted strain cloud picture and a predicted displacement deformation cloud picture based on the input actual parameters. The prediction precision of the prediction method is highly consistent with that of a traditional high-fidelity finite element method, and the calculation efficiency is improved by an order of magnitude.

The utility model discloses an underwater liquid oxygen gas explosion induced fracturing device of high efficiency and simple and convenient belongs to underwater blasting technical field, including the fracturing device pipe body of the hot melt material, and the upper pipe cap and lower pipe cap of same material are hot melt welded with fracturing device pipe body two ends respectively, and the pipe wall of upper pipe cap is equipped with the opening, and the hole wall of opening is hot melt welded with the fracturing device exhaust pipe of same material. The fracturing device pipe body of the utility model adopts the hot melt material to make, not only low temperature performance is good, can ensure the effective volume in fracturing device pipe body, can also improve the security of blasting operation, all components adopt same material to make, and the body connecting mode of hot melt welding is used between all components, and welding is firm, and the integrity and the sealing property are good, and the fracturing device material basically has no toxicity, and the harmful effect to person and environment is all smaller, the fracturing device structure of the utility model is simple, and the material source is extensive, and is easy to process and make, and the cost is lower, and is favorable to the application of underwater gas explosion operation large -scale engineering.

The invention relates to the technical field of blasting control, in particular to an underwater blasting multi-point synchronous detonation method based on delay control. In order to solve the problems of low multi-point triggering precision and poor triggering reliability caused by uncertain acoustic signal propagation delay, node clock drift and master control communication interruption in an underwater environment, the invention proposes that initial time reference calibration is carried out by establishing a safety communication link between a master control unit and a sub-control node; predicting propagation time delay based on hydrological observation data and a Medwin sound velocity model; generating a feedforward prediction compensation parameter by using Kalman filtering in combination with the historical clock skew sequence; the validity of the trigger instruction is autonomously judged in a distributed manner through majority voting or time window cross validation; and each sub-control node executes detonation operation in parallel according to the local high-precision clock and the compensation parameter, and records an execution log for synchronous precision evaluation.

The invention discloses a manufacturing method and application of underwater allowable trace spherical charge based on nickel hydrazine nitrate, and belongs to the technical field of underwater explosion.The trace spherical charge is composed of a charge shell and explosive, and the charge shell comprises a spherical hollow charge shell body and a sealing cover used for sealing a charge hole; the interior of the charging shell is used for filling explosives, nickel hydrazine nitrate is selected as a main charge for trace spherical charging, a certain proportion of high explosives are added, the charging structure is a spherical charging structure, the charging shell is made of resin plastics, the thickness of the charging shell is 0.5 mm-0. 8mm, and a small hole with the hole diameter of 1mm is formed in the top of a charging ball and used for being connected with an excitation wire. A round hole with the hole diameter of 5mm is formed in the bottom and used for filling medicine powder, and a sealing cover with the corresponding size is prepared. The underwater allowable trace spherical charge has the advantages of being small in charge amount, high in precision and strong in shell structure. And the explosion can be successfully detonated underwater through the connection with the excitation lead, and the equivalence with the explosion overpressure peak value and the explosion capacity of 25-4g TNT can be realized.