604 results about "Detonation" patented technology

Some implementations include an apparatus comprising an explosive material configured to detonate; a liner in contact with the explosive material, the liner configured to, after detonation of the explosive material, form jets to perforate a tubular disposed in a subsurface borehole; a reactive material configured to release energy in response to detonation of the explosive material; and a case in contact with a portion of the reactive material and configured to surround the explosive material, the liner, and the reactive material.

The invention discloses an evaluation and improvement method and device for a tunnel blasting effect and a medium, and relates to the technical field of tunnel engineering.The evaluation and improvement method comprises the steps that a tunnel coupling data set is collected, space registration and three-dimensional shape reconstruction are conducted, fracture space distribution is formed, risk probability mapping is conducted on the fracture space distribution, and a fracture risk thermodynamic diagram is output; the fracture risk thermodynamic diagram and tunnel rock mass data are input into a digital twin blasting model, a load mapping layer carries out load gradient distribution, a rock mass response deduction layer carries out stress wave propagation simulation and damage accumulation quantification, an optimized blasting number instruction set is generated, and a drill jumbo is driven to execute blasting operation and vibration monitoring according to the optimized blasting instruction set. And actual blasting effect parameters are obtained. According to the method, accurate simulation of geological conditions and optimal adjustment of blasting parameters are realized through the digital twin blasting model, and meanwhile, refined and interpretable evaluation of the blasting effect is realized through vibration monitoring and error propagation modeling of the actual blasting effect.

The invention discloses an anti-radiation aluminum-based layered composite board and an explosive welding method thereof, and belongs to the technical field of metal material welding. According to the method, aluminum or aluminum alloy serves as a base plate, tantalum or tantalum alloy serves as a compound plate, a titanium / titanium alloy middle transition layer is introduced, direct impact of explosive detonation on the compound plate is avoided through an aluminum protection plate, a powdery emulsion explosive is combined with an inert diluent to regulate and control energy parameters, and gaps between plates are accurately set based on the explosive welding window theory; and one-time forming metallurgical bonding of multiple layers of heterogeneous materials is achieved. The density of the obtained composite board is reduced by 40% compared with that of a traditional lead protection layer, and the composite board has the characteristics of radiation resistance, light weight, high strength and corrosion resistance and is suitable for manufacturing of spacecraft radiation protection layers and other deep space equipment.

The invention discloses a device and a method for testing initial velocity and distribution of fragments of a warhead, and the device is characterized in that a missile rack is arranged in a light filtering protection device, and is used for fixedly installing the warhead; the light filtering protection device is arranged between the high-speed camera laying room and the anti-reflection background, located on one side of the lens axis of the high-speed camera and used for enabling fragments generated by warhead explosion to penetrate through the space between the high-speed camera laying room and the anti-reflection background to shield explosion fire light and detonation products. The phenomenon that the lens of the high-speed camera is covered in the light curtain area of the explosion flame to cause overexposure is avoided, so that fragment flying images can be shot at a short distance. According to the testing device, explosion fire light is weakened through the light filtering protection device, the concentration of detonation products flying along with fragments is reduced, and therefore the fragment scattering process can be shot at a short distance, axial distribution of the initial speed of the fragments is directly calculated, and the fragment scattering angle is obtained.

The invention provides a blasting control method for simultaneously creating a free surface in advance by front-row holes in a slag pressing blasting area, which comprises the following steps of: arranging front-row blast holes and rear-row blast holes: arranging the front-row holes in the slag pressing area along a free surface direction, arranging rear-row holes in a main blasting area, and arranging according to a preset hole distance, a preset row distance, a preset hole depth and a preset charging coefficient; the front-row holes are set to be at the same detonation moment, so that synchronous detonation of the front-row holes earlier than that of the rear-row holes is achieved, the same multi-section charging is conducted in the blast holes of the front-row holes, and multi-section detonator detonation can be conducted in the same high-frequency millisecond detonation mode; setting delayed detonation of the rear row holes: setting the detonation moment of the rear row holes to be 10-20ms after the last section of detonation moment of the adjacent front row holes; and detonating implementation: detonating control is carried out by adopting a blasting network established by digital electronic detonators. According to the method, a continuous and stable free surface can be formed in the slag pressing blasting area, the crushing effect of follow-up blasting is improved, and the boulder yield is reduced.

The invention discloses a delay explosion propagation device for multi-stage perforation detonation, relates to the technical field of multi-stage perforation, and aims at solving the technical problem that an existing delay explosion propagation device is insufficient in safety isolation in the delay waiting stage. The delay explosion propagation device comprises a gun body, a pressure sensor, a perforating bullet system, a detonation system and an isolation mechanism; the detonating system comprises an inner barrel connected into the gun body in a sleeved mode, a firing pin arranged in the inner barrel in a sleeved mode and provided with hydraulic drive, and a fire cap installed at the bottom of the inner barrel. Through gathering and unfolding of the combination blocks in the isolation mechanism, reliable separation and connection of the impact path of the firing pin are achieved, the firing pin can directly impact the fire cap to complete detonation only when the combination blocks are unfolded, the impact path is separated and cannot be detonated when the combination blocks are gathered, and therefore an active controllable mechanical safety isolation means is provided; the technical problems that an existing delay explosion propagation device is detonated in advance due to the fact that a firing pin accidentally impacts a fire cap due to false triggering or pressure fluctuation in the delay waiting period, and safety is insufficient are solved.

The invention discloses a big data-based mine blasting process control optimization method and system, and relates to the technical field of mine blasting. Constructing a three-dimensional twinborn model of the mine, obtaining a plurality of blasting points and effective blasting areas thereof, obtaining drilling lithology information and effective blasting areas of the blasting points, constructing a charge evaluation model in combination with historical blasting parameters, and obtaining expected charge by utilizing the charge evaluation model in combination with first blasting parameters; the broken stone throwing duration of each effective blasting area is obtained, a detonation evaluation model is constructed in combination with the drilling lithology information and the historical blasting parameters, the detonation evaluation model is used for obtaining the expected detonation time difference in combination with the second blasting parameters, and recommended blasting parameters are generated according to the expected explosive loading amount and the expected detonation time difference and fed back; the corresponding expected explosive loading amount can be output according to the expected blasting area, and the explosive loading efficiency of mine blasting operation and the overall blasting effect are improved.

The invention relates to the technical field of arc shaped energy-gathered blasting parameter design, and provides an arc shaped energy-gathered blasting parameter design method under a complex crustal stress condition, which comprises the following steps: establishing a double-hole blasting three-dimensional model comprising a rock mass, an arc explosive, an energy-gathered pipe and coupled air, applying a crustal stress boundary condition and carrying out stress initialization; setting material model parameters based on the test data; performing fluid-structure interaction dynamic response numerical simulation on the model by adopting LS-DYNA to obtain stress and strain response caused by blasting; and establishing evaluation indexes based on tensile stress, compressive stress and through crack formation, carrying out sensitivity analysis and optimization adjustment on key blasting parameters such as blast hole spacing, delayed detonation time, explosive loading amount and coupling coefficient, and finally determining an optimal blasting parameter combination in different stress states. The method can effectively meet the blasting operation requirement under the complex ground stress condition, the presplitting quality and the rock mass stability are remarkably improved, and the method has wide engineering application prospects.

An emergency door release device for a vehicle may include a first sensor to detect a collision and provide a collision indication. A door sensor may detect if a door remains closed after the collision and provide a door indication. A receiver may receive a secondary detonation trigger indication from another device. A processor may analyze the indications to determine if they meet time constraints. A detonator may cause detonation of an explosive to separate the door from the vehicle body if the constraints are met. The device may include additional sensors to detect unsafe conditions. A method and system for releasing a vehicle door using similar components and steps may also be provided.

The invention relates to an ultra-deep well perforation test combined operation tubular column safety evaluation method. The method comprises the following steps that S1, a packer lower portion perforation detonation annulus pressure evolution finite element model and a dynamic negative pressure evolution numerical model after perforation detonation are established; s2, establishing a perforation instant tubular column coupling impact vibration evolution model, and determining main control factors; s3, establishing a dynamic evolution numerical model of the shock absorber at the moment of perforation, and obtaining a dynamic evolution model of the lower oil pipe of the packer, the shock absorber and the perforating gun at the moment of perforation; and S4, evaluating the safety of the pipe column at the lower part of the packer by taking the Mises yield criterion as an evaluation standard. The influence of perforation detonation transient wellbore pressure and dynamic negative pressure on a lower tubular column system of the packer is fully considered, the dynamic response rule of the tubular column is disclosed through numerical simulation and theoretical analysis, risk control measures are put forward, and the safety of the packer is improved. Theoretical basis and technical support are provided for optimal design of an ultra-deep well perforation test combined operation scheme and safety of an oil testing process.

The invention discloses a rock blasting load transfer and throwing simulation method which comprises the following steps: S1, acquiring field parameters of a target blasting project, the field parameters comprising rock mass mechanical parameters, explosive parameters, blast hole parameters and charging structure parameters; and S2, based on the field parameters, constructing a three-dimensional explosive-rock calculation model by adopting pretreatment software, dividing grids, importing the grids into finite element software, setting a material model, a state equation and boundary conditions, and simulating an explosive detonation process. The limitation of a single numerical value method is solved; quantitative analysis and accurate prediction of rock blasting lumpiness are achieved, inclined joints are adopted in the discretization process, actual rock mass joint distribution is better fitted, and the reliability of a simulation result is improved; bulk rocks and excessive crushing phenomena are effectively reduced, the explosion energy utilization rate is improved, the engineering cost is reduced, and a scientific basis is provided for explosion design of projects such as mining and water conservancy and hydropower.

The invention provides a method for preparing a honeycomb sandwich structure based on laser collaborative explosive welding, and belongs to the technical field of explosive welding. The method comprises the following steps: carrying out laser pretreatment on the surface of a honeycomb core to form a periodically distributed micron-sized pit array; submicron-order holes are constructed in the micron-order pit array based on a nanoimprint lithography method; covering the surface of the plane material with an energetic material layer, and carrying out explosive welding on the plane material and the pretreated honeycomb core by utilizing shock waves generated after the energetic material layer is detonated to obtain a honeycomb sandwich structure; the laser pretreatment adopts femtosecond laser treatment, the power density is 106W / cm < 2 >-107W / cm < 2 >, the pulse width is 100fs-500fs, and the distance between scanning paths is 10mu m-50mu m. According to the method, a metallurgical bonding layer and a residual compressive stress field are formed on the connection interface of the honeycomb core and the plane material through the synergistic effect of laser pretreatment, nanoimprint and explosive welding, crack propagation is inhibited, the fatigue life of a joint is prolonged, and thermal damage is reduced.

The invention discloses an aqueous medium interval charging and detonation control method for improving strip mine blasting efficiency, which comprises the following steps: S1, according to strip mine rock properties and blasting requirements, determining blast hole parameters, and adopting an aqueous medium as an axial interval medium to carry out axial non-coupling charging to form a specific aqueous medium interval charging structure; s2, through a field test, an aqueous medium interval charging structure blasting test is carried out under different unit consumptions, and the optimal unit consumption of strip mine aqueous medium interval charging structure blasting is determined; s3, a hole-by-hole delay detonation method is adopted, precise delay detonation is achieved in combination with a digital electronic detonator, and reasonable delay detonation time is calculated according to the rock blasting and crushing principle; and S4, monitoring a blasting vibration signal by using a blasting vibration meter on a blasting site, and adjusting blasting parameters in real time according to a monitoring result. The method has the effects of improving the blasting crushing effect, reducing the explosive unit consumption, reducing the blasting harmful effect and improving the mining efficiency.

The invention discloses an experimental device and an experimental method for gas / dust explosion flame-shock wave superposition coupling effect and combustible medium explosion transition induced by gas / dust explosion flame-shock wave superposition coupling effect under multi-parameter influence. Comprising a visual explosion system, a gas leakage diffusion system, a powder leakage diffusion system, an ignition system, a gas supply system, a powder spraying system, a discharge system, a displacement regulation and control system, a data acquisition system, a synchronous controller and a program control and data acquisition system. According to the experimental device and the experimental method for the gas / dust burning flame-shock wave superposition coupling effect under the influence of the multiple parameters and the induced combustible medium burning explosion transition thereof, the action processes of mutual impact, superposition, coupling and the like of detonation / detonation head-on flame-shock wave under the multiple working condition parameters can be realized; and the experimental study on the process of inducing the leakage diffusion combustible medium explosion transition and the critical condition thereof fills the technical blank of the study on the explosion flame-shock wave coupling effect process and the secondary disaster evolution mechanism induced under the influence of multiple parameters.

An explosive fragmentation structure includes a fragment enhancing insensitive munitions (IM) liner. The IM liner includes a patterned metal structure having openings therethrough embedded in a compressible material to define a desired fragmentation pattern of the outer metal casing upon detonation of the explosive. The IM layer is positioned between and in conformal contact with the outer metal casing's inner surface and the explosive's outer surface.

In a MEFP warhead detonation of the main charge is controlled to provide elevated pressure at multiple locations on the back surface of the liner to cut the liner and to form and propel forward a plurality of EFPs. An initiation system is configured for multi-point initiation of a plurality of booster charges to detonate the main charge to produce a plurality of detonation waves that constructively interfere at multiple locations on the back surface of the liner to form pressure hot spots that cut the liner and to form and propel forward a plurality of EFPs. In different embodiments, the elevated pressures are between 110% and 200% of the detonation pressure at the front of an individual detonation wave. The liner may, for example, be a flat plate or a include a plurality of dimples in which case the boosters are aligned to the center of the dimples.

In a MSCJ warhead detonation of the main charge is controlled to provide elevated pressure at multiple locations on the back surface of the liner to cut the liner and to form and propel forward a plurality of SCJs. An initiation system is configured for multi-point initiation of a plurality of booster charges to detonate the main charge to produce a plurality of detonation waves that constructively interfere at multiple locations on the back surface of the liner to form pressure hot spots that cut the liner and to form and propel forward a plurality of SCJs. In different embodiments, the elevated pressures are between 110% and 200% of the detonation pressure at the front of an individual detonation wave. The liner may, for example, include a plurality of recesses such as shallow dimples or deeper conical structures in which case the boosters are aligned to the center of the recessed structures.

The invention provides a tunnel contour high-precision explosion control method based on lumpiness uniformity optimization, which comprises the following steps of: fusing multi-source geological data to construct an updatable model, and triggering encryption measurement and correction by deviation; training a depth model by using a historical multi-modal case, and generating an initial blasting parameter; multi-objective optimization is carried out with the minimum back break, the maximum block yield and the minimum unit consumption as objectives, and gradient charge changing along with the hole depth is obtained; simulating a crack and a wave field in digital twinning, optimizing a detonation sequence to form destructive interference on a contour surface, establishing an electronic detonator network for self-inspection, and then performing blasting; evaluating the radial deviation by point cloud alignment after explosion, calculating the particle size and the qualified rate by images, generating a thermodynamic / cloud picture, and carrying out early warning and shutdown when the threshold value is exceeded; and on the basis of monitoring feedback and reinforcement learning self-adaptive adjustment, contour and lumpiness closed-loop optimization is realized.

The invention provides a management and control system and method for an intelligent seismic explosive column detonated by plasma, and belongs to the technical field of seismic explosive columns. The problem of low management and control efficiency in links such as production, storage, transportation, sales and warehouse-in and warehouse-out of the existing seismic explosive column is solved; the structure design that the plasma detonating body, the RFID passive chip and the seismic explosive column are integrated is adopted, plasma detonating is conducted on the seismic explosive column on the basis of the plasma shock wave detonation conversion mechanism, the instantaneity of explosion is achieved, and the safety of the seismic explosive column in the production and using process can be effectively improved while the requirement for refined exploration blasting can be met; meanwhile, through cooperation with information interaction of an information tagging device, a reader-writer and an information management and control system, management and control of the whole life cycle of the intelligent seismic explosive column in the use process of production, transportation, storage and blasting can be achieved; the method is applied to seismic exploration blasting operation scenes of oil and gas fields and coal gas fields.

The invention discloses an explosive wave simulation device and method based on gas combustion driving, and solves the problems that in the prior art, electric heating energy consumption is large, a gas detonation method generates detonation waves and an extremely high pressure peak value, the waveform of shock waves is affected, and pressure bearing of equipment is challenged. The explosive wave simulation device based on gas combustion driving comprises a combustion driving section, a contraction and expansion section, a driven section, an ignition device arranged on the combustion driving section and a diaphragm arranged between the driving section and the contraction and expansion section. Combustible mixed gas is contained in the combustion driving section, a shape adjusting cushion block is embedded in one end of the combustion driving section, the radial sectional area of the inner space of the shape adjusting cushion block is sequentially increased from one end to the other end in the axial direction, and the other end of the combustion driving section is connected with the inlet end of the contraction and expansion section. An ignition opening is formed in the combustion driving section; the outlet end of the contraction and expansion section is connected with the opening end of the driven section; an ignition head of the ignition device penetrates through the ignition opening; and the driven section is used for installing to-be-tested equipment.

The invention provides a detonation pressure optical testing device for a micro-dose powdery explosive, which comprises a rotating mirror type scanning camera and an explosive detonation unit, and is characterized in that the rotating mirror type scanning camera is used for collecting a shock wave motion trail image when the powdery explosive is detonated; the explosive detonating unit comprises an organic glass column body and a high-pressure exploder, an explosive charging hole with an open top is formed in the organic glass column body in the axial direction, a stress wave adjusting rod is arranged in the explosive charging hole in a penetrating mode, and the bottom face of the stress wave adjusting rod can make contact with powdery explosives charged into the explosive charging hole; a first detonating hole and a second detonating hole are coaxially formed in the organic glass column body in the radial direction, and both the first detonating hole and the second detonating hole communicate with the charging hole; the heating wire penetrating through the first detonating hole, the charging hole and the second detonating hole can make contact with the powdery explosive in the charging hole, and the two ends of the heating wire are connected with the positive electrode and the negative electrode of the high-pressure exploder correspondingly. According to the invention, a traditional detonation mode is not needed, the interference of the detonator and the explosion expanding explosive on the measurement process of the sample with the small explosive quantity is solved, and the test convenience and the test precision are improved.

The invention provides a medium-length hole blasting method for cooperative control of air blasting and hole collapse, and relates to the technical field of underground mine blasting engineering.The medium-length hole blasting method comprises the following steps that S1, geological and structural information of an underground mine stope to be mined is obtained; s2, dividing a medium-length blast hole function section; s3, designing a charging system: constructing a structure coupling blasting configuration system based on the synergistic effect of a blasting section, an air blasting section and a hole collapse section; s4, setting an initiation system and delay; and S5, blasting implementation. According to the method, function division in the drilling space is redefined, a collapse-air coupling system is established, directional management and control over the detonation pressure release path and structure-level protection over the protection target are achieved, the structure bottleneck of blasting disturbance control in the prior art is broken through, and the reliability of blasting disturbance control is improved. And the safety, the stability and the adaptability of medium-length hole blasting under complex geological conditions are improved.

The invention discloses an indoor high-voltage grounding switch, which comprises a vacuum box body, a lock rod, a power connection seat and an electromagnetic driving assembly, and is characterized in that one side of the vacuum box body is connected with a sealing cover box, and the sealing cover box is internally provided with a guide rod and a detonation protection mechanism; the electromagnetic driving assembly slides along the guide rod and drives the lock rod to move, and the lock rod is connected with the access electrode through the first insulating terminal; the power connection seat comprises a shaft frame, a movable guide frame, a threaded sleeve ring and a rotating seat, the threaded sleeve ring is in threaded connection with the lock rod, and a second insulating terminal and a grounding electrode are arranged on the rotating seat to realize circuit grounding. The detonating protection mechanism comprises a fixed cylinder, a plunger rod, a short-circuit control electrode and a detonating explosive, and triggers an explosion to push the lock rod to be grounded forcibly in an abnormal state. The device has a dual-trigger control mode, can be driven by an electromagnetic assembly in a conventional state, realizes emergency grounding through explosion gas in an abnormal state, and is quick in response; meanwhile, the contact stability is enhanced through a thread locking structure, and the system safety and reliability are improved.

The invention provides a test system and method for simulating in-situ reservoir electric detonation fracturing through gas-liquid coupling pressure application. The test system comprises a pressure chamber used for installing a test piece, a stress loading device, a gas-liquid coupling device and a high-voltage electric detonation fracturing device with a discharge electrode. A detonation hole is formed in the top of the test piece; the stress loading device is connected with the pressure chamber and is used for applying axial pressure and confining pressure to the test piece in the pressure chamber to simulate ground stress; the gas-liquid coupling device can inject water, gas, water and gas into the pressure chamber; and a discharge electrode of the high-voltage electric detonation cracking device can be arranged in a detonation hole of the test piece to crack the test piece. The device has the characteristic of being capable of applying axial pressure and confining pressure, controllable explosion energy can be achieved, coupling of multiple physical fields and high accuracy of energy output are guaranteed, and self-water injection, self-gas injection and up-down water pumping and draining are achieved through the gas-liquid coupling device; and accurate and in-depth research on the hole fracture development law, gas migration, permeability and the like after the in-situ reservoir high-voltage electric pulse technology is realized is facilitated.

The invention discloses a simulation device and method for simulating goaf coal spontaneous combustion induced gas explosion, and belongs to the technical field of goaf gas explosion simulation. The simulation device comprises an explosion cavity body, a region control system, an explosion simulation system, an environment simulation system, a monitoring system and an intelligent control system; the area control system is used for dividing the space in the explosion cavity to form an explosion area and a non-explosion area at different positions; one end of the explosion simulation system is connected to an explosion area in the explosion cavity through the bottom of the explosion cavity; the environment simulation system is used for injecting gas needed by detonation of the explosion simulation system into the explosion area and injecting gas used for simulating the internal environment of the goaf into the non-explosion area. The monitoring system is used for measuring a gas explosion process in an explosion area and data change conditions of temperature, gas concentration and pressure characteristics of a coal face; according to the invention, the influence of gas explosion at different positions of the goaf in the explosion cavity on the coal face can be simulated.

The invention relates to the technical field of deep roadway blasting, and discloses a high-energy micro-damage coordinated control blasting method and system for a deep roadway. The method comprises the following steps: acquiring physical and mechanical parameters of surrounding rock, high ground stress parameters and explosive performance parameters; determining the rock critical crushing energy consumption density of the surrounding rock under the action of high ground stress; based on the energy consumption density, the explosive performance parameters and the explosion energy dissipation rule, a slotting position layout scheme is determined; determining a slotting angle layout scheme by combining high ground stress and interaction of a fracturing angle and a slotting angle; slotting holes are formed, and a high-energy hole in the center of a working face is excavated And adjusting high-energy hole charging parameters and a detonation time sequence, and sequentially detonating to realize blasting. According to the method, the high ground stress guiding effect and the explosion energy dissipation rule are utilized, high-energy rock breaking and surrounding rock micro-damage control are coordinated, the rock breaking efficiency and the explosive energy utilization rate are improved, the surrounding rock stability is guaranteed, and the method is suitable for deep high-stress roadway blasting construction.

The invention provides a method and system for determining time delay between auxiliary hole subsection detonating network sections, and belongs to the technical field of tunnel blasting design. A single-hole blasting experiment and blasting experiments with different explosive loads are carried out to obtain the change relation of the single-hole vibration speed along with time and the relation between the explosive loads and the waveform vibration speed peak value, and the time delay of the auxiliary hole subsection detonating network sections is determined according to the change relation of the single-hole vibration speed along with the time. And determining a peak value of the explosive load based on a safe vibration velocity threshold value, meanwhile, setting inter-section delay and inter-row delay of the same row based on an auxiliary hole same-row segmentation mode, an inter-row segmentation mode of auxiliary holes and a blasting sequence, constructing a single-section blasting vibration waveform function, and carrying out superposition and calculation on multi-section vibration waveforms of the same row, so as to obtain a multi-section blasting vibration waveform. According to the method, the optimal delay time between the same-row segmental blasting segments is determined, then the optimal delay time between the rows is determined by constructing a single-row blasting vibration waveform function and carrying out multi-row vibration waveform superposition and calculation, finally, a blasting delay scheme is generated, and accurate control over blasting vibration is achieved.

The embodiment of the invention provides a layered rock stratum roadway layer crack high-energy hole underholing blasting method and system. The method is applied to the technical field of blasting and comprises the steps that rock stratum bedding distribution scanning is conducted through a geological radar, rock mass parameters are acquired, a bedding face dip angle and an excavation working face intersection angle are obtained, and the bedding distribution condition is obtained; dynamic hole net design is carried out based on rock mass parameters, blast hole pitch determination and optimization are carried out respectively, and a three-dimensional blast hole arrangement diagram is constructed; selecting proper positions to arrange blast holes based on the three-dimensional blast hole arrangement diagram, and automatically filling holes of the blast holes through a layered charging device to complete charging of the blast holes; and after blast hole charging is completed, a detonation time sequence theoretical model is constructed, and millisecond-level hierarchical control detonation is carried out. In this way, by setting the detonating sequence and optimizing the charging structure, the comprehensive target of efficient rock breaking, precise forming and surrounding rock protection is achieved, and the method is suitable for safe and efficient tunneling of deep complex layered rock roadways.

The present invention discloses a method for controlling the blasting gap range of surrounding rock in an open-pit mine, comprising: determining a target blasting gap range according to the geological conditions and mining requirements of the target open-pit mine; arranging a plurality of preset blasting holes in the surrounding rock, wherein the depth and spacing of the blasting holes are optimized according to the target blasting gap range; loading a preset amount of explosives in each blasting hole, and providing a plurality of segmented detonating devices, wherein the detonation time of the segmented detonating devices is controlled according to the target blasting gap range; sequentially detonating the explosives in the blasting holes by the segmented detonating devices to form a preset blasting gap range; utilizing monitoring equipment to monitor the crack expansion during the blasting process in real time, and dynamically adjusting subsequent blasting parameters according to the monitoring results; the present invention accurately predicts the blasting gap range through a neural network, and then accurately controls the blasting parameters, which has important practical significance for improving blasting efficiency, ensuring surrounding rock stability, and reducing mining costs.

The invention discloses a blasting construction harmful effect control method and system, a medium and a product, and relates to the field of engineering construction. The method comprises the steps that a three-dimensional analysis model is constructed according to geologic structural plane data of a to-be-blasted area and spatial orientation data of a protected object, and a target area where the flying stone main throwing direction conflicts with the orientation of a vibration sensitive area is recognized based on the three-dimensional analysis model; constructing a blasting sequence according to the spatial range of the target area, the geologic structural plane occurrence and a preset safe throwing sector area; coupling simulation is conducted on the blasting sequence through the blasting dynamics simulation model, whether the flying stone throwing track and the vibration distribution meet the preset safety requirements or not is verified, and if not, blast hole grouping or detonation time difference is adjusted, and iterative optimization is conducted till a final blasting scheme meeting the flying stone throwing track and the vibration distribution at the same time is obtained; and outputting a final blasting scheme. By implementing the technical scheme, the harmful effect of blasting construction can be effectively controlled.