274 results about "Detonation" patented technology

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 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.

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 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 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.

The invention provides an FDEM-based rock blasting process simulation method and system considering blasting gas, and the method comprises the steps: building a jointed rock blasting numerical model comprising a blast hole, a rock mass and a joint network based on a finite element-discrete element coupling method; setting a static-dynamic unified boundary condition for the jointed rock mass blasting numerical model, and applying a blasting stress wave load; constructing an explosion gas action model, and dynamically calculating a transient explosion cavity area and transient gas pressure; transient gas pressure is coupled and applied to the boundary of the crack and the surface of the isolated rock; and operating the solver, simulating the whole process from stress wave propagation, joint attenuation effect, crack initiation and propagation to blasting gas driven crushing and throwing, and analyzing the result. The method provided by the invention overcomes the defect that the existing method is difficult to simultaneously and accurately characterize the joint effect and the action of the blasting gas, obviously improves the authenticity and reliability of the simulation of the blasting rupture process of the jointed rock mass, and provides an effective tool for blasting mechanism research and engineering optimization design.

The invention discloses a high-power multi-channel independent delay detonation control system which comprises a main controller, the main controller is connected with an integrated cabinet, a battery pack module, an inverter module and a rectifier module are arranged in the integrated cabinet, and a controller module, the battery pack module, the inverter module, the rectifier module and the controller module are connected in sequence; a heat dissipation system is arranged in the integrated cabinet, and the controller module is connected with an ignition device in the blast hole. The invention further discloses a high-power multi-channel independent delay detonating control method, the problems that existing detonating equipment is short in discharging time, small in discharging current, low in discharging power and few in output channel are solved, and the high-power multi-channel independent delay detonating control method can be widely applied to bursting balloons and detonating fireworks and crackers. And the device can also be used as detonating equipment for an explosive blasting technology, a carbon dioxide blasting technology and a liquid oxygen rock breaking technology.

The invention belongs to the technical field of mine slope treatment and dangerous rock body removal, and particularly relates to a mine high slope wedge-shaped dangerous rock body staggered step gas blasting construction method. The method comprises the following steps that construction preparation is conducted, the boundary of the dangerous rock mass is determined, and drill holes are designed; the fracturing device is filled, specifically, the fracturing device is assembled and filled with liquid carbon dioxide; drilling is conducted, specifically, drilling holes are formed according to the step staggering sequence; a fracturing device is installed in a pipe, specifically, the fracturing device is installed in the hole and filled; detonating operation: connecting a detonating network in series and exciting; checking and recycling, namely recycling the equipment after safety is confirmed. According to the method, accurate and controllable crushing of rocks is achieved by optimizing the drill hole arrangement and the staggered step blasting sequence and utilizing huge pressure generated by phase change of liquid carbon dioxide, the defects that a traditional blasting technology is poor in safety, large in environmental pollution, serious in disturbance and the like are overcome, and the method is particularly suitable for dangerous rock mass treatment engineering of mine high slopes and adjacent sensitive facilities.

A detonator for a perforating gun. The detonator is used to ignite a detonator cord in a charge tube for a perforating gun assembly, which in turn is used for perforating a wellbore. The detonator includes a cartridge. The cartridge comprises a tubular body having a first end; and a second end. Preferably, the tubular body is fabricated from a metallic material. The detonator also comprises a post proximate the first end of the tubular body. The post is configured to be in electrical communication with a first leg wire connected to an addressable switch. Alternatively, the post is in contact with the end of a detonation pin. The detonator also has a fuse head within the bore of the tubular body, and a fuse wire. The fuse head is in contact with the explosive charge material. The detonator is releasably snapped into a compartment located within the charge tube.

The invention belongs to the technical field of deep underground target penetration, and particularly relates to an energy gathering / kinetic energy series penetration structural body which comprises a charging shell, the front end of the charging shell is provided with an opening, a shaped charge liner is arranged at the opening of the front end of the charging shell in an adhesive mode, the rear end of the charging shell is fixedly connected with a rear-stage connecting part, and the rear-stage connecting part is fixedly connected with the charging shell. The rear end of the rear-stage connecting part is connected with a rear-stage main projectile body, a charging buffer layer is arranged at the front end of an inner cavity of the rear-stage main projectile body, a rear-stage fuze is installed at the rear end of the rear-stage main projectile body, and the charging shell and the rear-stage main projectile body are both filled with gunpowder. Wide-speed-range penetration is achieved through the series connection structure, the rear-stage connecting part extends into the charging shell to be in threaded connection with the charging shell, the rear-stage connecting part is protected against damage by utilizing three-direction pressure stress generated by explosive detonation, meanwhile, the length of the rear-stage connecting part can be adjusted, the rear-stage connecting part is used for protecting a penetration projectile body structure under the condition of different penetration target-hitting speeds, and the penetration target-hitting speed is improved. And therefore, the purpose of increasing the penetration power is achieved.

Safe addressable firing controls positioned within a reusable housing that only allows voltage and current from the shooting panel to reach the explosive device by addressing the switch to open allowing electricity to pass through it and setting off the chain reaction during detonation, wherein the safe addressable firing controls positioned within a cartridge that creates a safety barrier between the surface equipment and a downhole tool, such as an explosive device.

The utility model discloses an underwater tiled optical cable cutting system, which comprises a cutting device and a supporting seat, and is characterized in that the cutting device comprises a pressure-resistant shell, a working part arranged in the pressure-resistant shell, a fuze system and a power supply; the supporting base is provided with an arc-shaped straddle groove, the two ends and the bottom of the straddle groove are open, the straddle groove is used for supporting the cutting device and straddling the optical cable to be cut, and when the cutting device is fixed to the supporting base, the working part right faces the straddle groove. By the adoption of the scheme, the cutting device is used in cooperation with the supporting base, meanwhile, the structure of the internal working part is optimized, the stability of detonation cutting jet flow and the accuracy of the cutting position and direction are greatly improved, the better cutting effect is achieved with the small main explosive loading amount, and the cutting device has excellent adaptability for tiled cables.

The utility model discloses a kind of 48 millimeter detonation bomb of deterrent type hand-throwing type riot, including firing mechanism and medicine box mechanism, firing mechanism includes fuse body, grip piece and needle prick delay detonator, still movably connected with pin shaft and split pin on fuse body, still connected with spring and firing pin block assembly on pin shaft, firing pin block assembly includes firing pin and turnover block, firing pin block assembly has first position and second position, when first position, spring is in compression state under the action of turnover block, and spring reset can drive firing pin block assembly to rotate from first position to second position;Split pin is connected with pull ring;Medicine box mechanism includes shell, inner medicine box and end cover, inner medicine box is filled with detonating agent, needle prick delay detonator extends into detonating agent, filling chamber is opened in shell, filling chamber is filled with paraffin wax.This scheme can emit greater sound and strong light, suitable for use in vast space, and can carry out more accurate strike.

The utility model discloses a semi-explosion type transverse wave source based on high-pressure gas explosion near-field waveform regulation and control, which comprises a cylindrical detonation tube, a gas chamber is arranged in the detonation tube, one side of the gas chamber is an arc-shaped surface, the central axis of the arc-shaped surface is consistent with that of the detonation tube, the other side of the gas chamber is an isolation surface, and the isolation surface is arranged on the detonation tube. A groove consistent with the detonation tube in the extending direction is formed in the side, close to the isolation face, of the tube wall of the detonation tube to form a waveform regulation and control chamber, an annular notch groove is formed in the side, close to the arc-shaped face, of the tube wall of the detonation tube, and sealing heads are arranged at the two ends of the detonation tube. The semi-explosive shear wave source realizes near-field waveform regulation and control on a high-pressure gas detonation pressure field through structural design, performs near-field waveform regulation and control on the pressure field generated by detonation through structural design of the detonation tube, enables the energy proportion of a generated shear wave signal to be amplified, is a brand-new shear wave source generation way, and can be applied to the field of high-pressure gas detonation. The system has the advantages of being strong in transverse wave signal, environmentally friendly, good in economical efficiency, good in field adaptability and the like.

Systems and methods for perforating wellbores include comparing a signal from the least one pressure sensor with a preset pressure and, in response to determining that the signal from the least one pressure sensor is within a preset pressure range, transmitting the activation signal to a firing head.

Well perforation methods of the present disclosure may comprise introducing a perforation bullet into a wellbore comprising a well casing, the wellbore penetrating a subterranean formation; wherein the perforation bullet comprises a housing; an explosive within the housing, the explosive comprising amorphous porous silicon; and an igniter within the housing physically separated from the explosive, the igniter comprising a nitrate; and exposing the explosive to the igniter to induce a detonation to produce a plurality of perforations within the well casing, thereby allowing fluid communication between the subterranean formation and the wellbore.

The present application relates to the technical field of tunnel blasting, in particular to a kind of energy-gathering tube smooth blasting tool and construction process.The tool includes tool main body, and the tool main body includes installation strip;Explosive roll is equipped at the side wall of installation strip;Explosive roll includes sleeve, and sleeve inside is equipped with energy-gathering tube;The one end of energy-gathering tube that extends sleeve is equipped with energy-gathering cover;Energy-gathering tube side wall is equipped with strip-shaped hole;The distance between the side wall of both ends of strip-shaped hole gradually increases from the one end of energy-gathering tube close to energy-gathering cover to the other end of energy-gathering tube.The process includes S1, mark installation hole position;S2, drill installation hole;S3, energy-gathering tube assembly;S4, middle explosive roll production;S5, bottom explosive roll production;S6, explosive roll installation;S7, hole drilling;S8, connection, detonation;For the defects in the prior art, the present application can solve the problem that the amount of powder is reduced after the energy-gathering tube is loaded into the emulsified explosive shell, and the explosion power of emulsified explosive can be improved under the condition that the amount of powder is not convenient.

Well perforation methods of the present disclosure may comprise introducing a perforation bullet into a wellbore comprising a well casing, the wellbore penetrating a subterranean formation; wherein the perforation bullet comprises a housing; an explosive within the housing, the explosive comprising amorphous porous silicon; and an igniter within the housing physically separated from the explosive, the igniter comprising a nitrate; and exposing the explosive to the igniter to induce a detonation to produce a plurality of perforations within the well casing, thereby allowing fluid communication between the subterranean formation and the wellbore.

Connection of detonation tube and lightweight instantaneous fuse for a residue- free explosive system of non-electric detonator that consists of the tube (2), in longitudinal opening of which at least one cylindrical seal (3, 3', 4) having inner longitudinal opening arranged on one side of the connection (1) to insert the detonation tube (5) and on the other side of the connection (1) to insert the lightweight instantaneous fuse (6) is attached irremovably. The inserted ends of the detonation tube (5) and the lightweight instantaneous fuse (6) are attached in the seal (3, 3', 4) also irremovably.

The blasting method comprises the steps that according to engineering geological conditions and blasting effect requirements, blasting engineering design is carried out, drilling parameters, a detonating time sequence and plugging requirements are determined, according to the drilling parameters, a charging structure matched with the specification is selected, and a blasting process is carried out according to the selected charging structure. And the explosive charging structures filled with the explosives are assembled outside the drill hole according to the designed interval, the drill hole is pushed, and a hole opening is blocked. And the space between the charging structure and the hole wall of the drill hole is filled with rapid hardening slurry, and gas in the drill hole is exhausted through the exhaust pipe. And after the slurry in the hole is solidified, final connection of the detonating network is completed in a safe area outside the hole, and after comprehensive inspection and warning setting, a detonating station commands to excite the network to achieve detonating. According to the segmented plugging blasting method for the ascending drill hole, the hole sealing length is shortened, the axial distribution of blasting energy is optimized, the energy effect of a hole opening area is effectively enhanced, and the boulder rate is reduced.

An EFI or LEEFI that provides enhanced detonation energy sufficient to directly detonate a main charge to improve the reliability and ease the qualification of an explosive firing train. This is accomplished by forming the EFI’s output charge from an explosive material typically used as a booster explosive (e.g., PBXN-5, CH-6 and Composition A5) rather than a primary explosive and making the diameter of the output charge greater than the diameter of the barrel thus increasing the total mass of the output charge. For use in military grade munitions, the EFI’s casing is formed with one or more vent holes radially adjacent the output charge.

The invention discloses a large-size tin-phosphor bronze / Q235B composite plate and a preparation method thereof, and belongs to the field of material forming, the method comprises the following steps: by taking a Q235B steel plate as a base plate and a tin-phosphor bronze plate as a compound plate, sequentially laying a base plate, the Q235B steel plate, a support column, the tin-phosphor bronze plate, a protective layer, a fence structure, a low-detonation-velocity rock expanded ammonium nitrate fuel oil explosive layer and an inert layer on an explosion field from bottom to top, and forming the composite plate. And then the tin-phosphor bronze plate and the Q235B steel plate are subjected to metallurgical bonding after high-speed collision by detonating the explosive, the large-size tin-phosphor bronze / Q235B composite plate is obtained, the interface bonding rate of the obtained composite plate is larger than 98%, the interface shear strength exceeds 274 MPa, and the composite plate has the advantages of excellent high strength, wear resistance and the like of tin-phosphor bronze and low cost of Q235B steel.

A method for constructing artificial pillars in large goaf areas using controlled blasting and slotting includes the following steps: S1. Based on three-dimensional laser scanning and ground pressure monitoring data, a three-dimensional digital model is generated using data processing software to identify potential high ground pressure instability risk areas and determine the location, shape, and size parameters of the artificial pillars; S2. Main blasting holes, cutting holes, and auxiliary holes are arranged in the corresponding area of ​​the goaf roof to form a controlled blasting slotting design; S3. A reinforcing cage is installed at the bottom of the goaf, and the pillar mold is installed and assembled; S4. Using a micro-delay detonation method, the cutting holes, auxiliary holes, and main blasting holes are detonated sequentially, causing the roof rock to directionally collapse and fall into the reinforcing cage directly below, filling and compacting to form a composite artificial pillar; then, the outer mold is removed, completing the construction of the artificial pillar. This invention achieves an integrated and coordinated process of blasting pressure relief, crushed stone utilization, and pillar construction, with advantages of simplified procedures, minimal disturbance, and high stability.

The application discloses a protection device for inhibiting explosion incidental damage of an active interception combat unit, which comprises a barrier layer for bearing a detonation wave of the active interception combat unit, an H-shaped arc muscle structure arranged at the rear end of the barrier layer, a plurality of ceramic round-taip-shaped protection blocks connected between the barrier layer and a honeycomb plate and having a front end area greater than a rear end area, the height of the ceramic round-taip-shaped protection blocks being greater than the height of the H-shaped arc muscle structure, and the height and density of the ceramic round-taip-shaped protection blocks at the central position being greater than those at the peripheral position, so that ceramic cones can be formed under the action of pressure, the honeycomb plate for dispersing and absorbing impact force, a back plate for supporting the honeycomb plate and connecting an eight-shaped reinforced front end, a plurality of eight-shaped reinforced structures arranged in a central symmetry, the rear end of the eight-shaped reinforced structures being used for being connected with a vehicle body and being inclined outward, so that the front ends of the plurality of eight-shaped reinforced structures are broken laterally under the action of pressure. The application can reduce the tactical index of incidental damage to the loaded vehicle body.

The invention discloses an energy-gathered expansion metal pipe patching device, which utilizes chemical energy released by explosive detonation to extrude a high-elongation special steel pipe to an underground casing damage well section through directional overpressure shock waves generated by modular energy-gathered charging, and expands the original drift diameter to achieve the purposes of diameter expansion and sealing. A hydraulic power source and a conveying pipe column are not needed, the outer diameter of the sealing patching pipe is small, the sealing patching pipe can be lowered to a target patching position easily, and the sealing patching pipe has the advantages of being high in energy utilization rate, high in sealing pressure-bearing index, convenient in construction process, low in cost, high in work efficiency and short in operation period and is suitable for large-scale industrial use and popularization.

The application relates to a device for preparing ceramic blocks by self-propagating high-temperature synthesis, and belongs to the technical field of ceramic preparation. The device comprises a ceramic block limiting device and a detonation-driven flyer device arranged above the ceramic block limiting device; after the explosion of the explosive in the detonation-driven flyer device, a flyer is driven to impact the ceramic block limiting device; the ceramic block limiting device comprises a top cover, a constraint component coaxially sleeved outside the top cover and a base connected with the constraint component; the top cover is provided with a groove capable of closely matching a convex side surface of the base, and an outer edge extending outward is arranged at the groove mouth; the constraint component is limited by the abutment of a stepped surface in the constraint component and an upper end surface of the outer edge; an ignition hole for placing an aluminized agent is arranged on the side surface of the top cover, and a through groove for placing an ignition wire in contact with the aluminized agent is arranged on the side surface of the constraint component. The device realizes omnibearing limitation of ceramic initial blanks, and is favorable for obtaining ceramic blocks with high compactness.

This invention provides a hydraulically operated safe detonation device, relating to the field of oil and gas well completion technology. It includes: a housing, an inner core assembly embedded within the housing, and a sliding valve assembly located on one working face of the inner core assembly. The housing is a cylindrical hollow structure with a connecting hole for connecting to the sliding valve assembly. The housing has a preset receiving space for installing the inner core assembly. The inner core assembly is adapted to the working dimensions of the receiving space. The sliding valve assembly is connected to the housing via an internal hexagonal screw and is located in the middle of the housing. Under normal ground pressure, this invention automatically isolates the detonation transmission channel between the detonator and the perforating gun. Even if the detonator is accidentally triggered, its explosive energy cannot be transmitted to the perforating gun string, completely eliminating the safety hazard of accidental explosion of the perforating gun string during surface maintenance.

This invention discloses a low-vibration blasting method for mining transition material based on digital electronic detonators, belonging to the field of blasting engineering technology. The invention includes drilling boreholes in a weakly weathered to fresh gneiss source area according to preset borehole network parameters; verifying the boreholes to obtain actual borehole depth data; calculating the charge amount and charge length per hole based on the borehole network parameters, explosive consumption per unit area, and actual borehole depth data; calculating the minimum filling length based on the chassis resistance line and filling coefficient; verifying the actual filling length and adjusting the charge amount per hole until the requirements are met; determining the continuous coupling charge structure and loading the explosives; placing digital electronic detonators in the middle of the charge section and connecting them to form a detonation network; scanning for interference sources and planning detour routes using an electromagnetic interference detector before detonation; setting the inter-row delay time before detonation; and obtaining transition material with satisfactory gradation. This invention can improve mining efficiency and quality and is suitable for the transition material requirements of infrastructure projects.