32 results about "Blasting cap" patented technology

A method and apparatus is described for detecting and recognizing an object within a generated image regardless of the aspect view angle of the object within the image. An object may be recognized by comparing descriptor values determined for the detected object with descriptor values and/or value ranges stored in an information base for different aspect view angles of a plurality of objects. A novel desurfacing approach may be use to remove image surface distortions unrelated to objects within the image. A novel graphical user interface may be used to improve user interaction and control of the object recognition process. The method and apparatus described may be used to detect objects within images generated by a wide variety of imaging systems. For example, concealed explosive devices may be detected by configuring the apparatus to recognize views of a conventional blasting cap's dense explosive filler within x-ray generated images.

The invention discloses an ultra-under-excavation control energy-collecting hydraulic smooth blasting construction method for a slate tunnel. The method respectively adopts a slate rock stratum comprehensive geological prediction system, an ANSYS finite element blasting simulation analysis method, site construction III, IV and V slate rock surrounding rock blast hole optimization and an electronicdetonator millisecond blasting technology to solve the problems of insufficient contour smoothness, low blast hole retention rate, poor ultra-under-excavation control and large surrounding rock vibration influence of the slate tunnel after blasting. Good effects are obtained in the aspects of section forming and over-under-excavation control by adopting the method. The overbreak is controlled within 10%, the excavation efficiency is improved by about 15%, the explosive consumption is reduced by about 20%, the construction progress is accelerated by about 20%, and the blast hole residual rateis 70%-90%. The method is applicable to tunneling of slate rock surrounding rock tunnels of III, IV and V types of slate under the condition of karst geomorphology by adopting energy-collecting smoothblasting, and has a good reference effect on other loose flaky rocks or rocks with fully developed joints.

The invention relates to a millisecond blasting ore-waste separating method of a gentle-inclined narrow ore body. The method comprises the steps of: respectively drilling ore blast-holes and barren rock blast-holes in an ore body and a barren rock once at a time, with the array pitches of the blast-holes being 0.6-0.8m, the distances of the blast-hole being 0.5-0.7m and the depths of the blast-holes being 1.2-2.0m; selecting explosive loading quantity of the ore blast-hole to be 0.75-0.9kg per hole, and selecting the explosive loading quantity of the barren rock blast-hole to be 1.0-1.15kg per hole; adopting non-electric detonator millisecond blasting, wherein the blasting time difference is 0.5-1 second, and blasting all barren rock blast-holes before the first ore blast-hole, wherein the blast-hole blasting order is from bottom to top and from outside to inside. By adopting the blasting parameters, non-electric detonator millisecond blasting and segment blasting, the ore and barren rock throwing distances can be controlled; the ore and barren rock are separated; the impoverishment rate in mining is reduced; the grade of mined raw ore is improved; discharge of the barren rock is reduced; and the grade of the raw ore, and the utilization rate and recovery rate of the resource are improved, and composite economic results of enterprises are increased.

The invention discloses a microexplosion device for destructing electronic chips. The microexplosion device comprises an upper housing, a blasting cap, an initiating explosive device chamber and a lower protection plate, wherein the upper housing is an empty cavity with an opening in the lower part; fixed supporting ears are arranged at two ends of the outer part of the upper housing; the blastingcap has two blasting signal lines, and the two blasting signal lines are led out from the side wall of the upper housing; high explosive is stuffed to the upper part of the initiating explosive device chamber, and insulating materials are stuffed to the lower part of the initiating explosive device; an explosion orienting window is arranged on the lower protection plate; an energy attenuation plate is arranged in the explosion orienting window; and a plurality of controlled fragments are arranged on the energy attenuation plate. The microexplosion device for destructing electronic chips disclosed by the invention is controllable in explosion opportunity and explosion power, small in size, long in storage time, good in environmental compatibility, and convenient to load and unload; an assigned electronic chip can be effectively and physically damaged; and besides, through the energy attenuation plate, the explosion power is controlled, so that other electronic components are not damaged, the purpose that under a certain condition, the assigned electronic chip is destructed is achieved, and the data security of the electronic chip is improved.

The invention relates to a fire extinction bomb, which comprises mixed fire extinction powder, explosive and explosive device, wherein said mixed powder comprises mudstone powder, common salt and adhesive; the explosive is at the center of powder, which comprises common explosive drug and compressed gas; the explosive device comprises blasting cap, blasting fuse and safety clamper; the blasting fuse is connected to explosive drug and compressed gas, to reach outside the package of powder to be sealed by safety clamper and adhesive; the clamper is contacted with the package of powder. The invention uses explosion to drive the fire extinction powder, to cover the fire. Compared with present technique, it has low cost and wide application.

The invention discloses a method for preventing breakage of titanium steel bimetal composite board by adopting explosion welding at a low temperature. The method comprises the following steps: performing surface treatment on a basic-layer metal board and a stratified-layer metal board; paving a layer of fine sand on a ground foundation, paving flexible protective materials on the fine sand; then placing the basic-layer metal board on the flexible protective materials; uniformly distributing spaced supporting sheets on the surface of the basic-layer metal board; then putting the stratified-layer metal board on the upper parts of the spaced supporting sheets; then pasting a paper-made dynamite frame on the upper surface of the stratified-layer metal board; coating a protective layer on the stratified-layer metal board; and finally, putting dynamite in the paper-made dynamite frame, and detonating an electric detonator to obtain the bimetal composite board. Thermal treatment, leveling and cutting of the bimetal composite board subjected to explosion welding can be carried out so as to obtain the metal composite board with required specification. According to the method disclosed by the invention, good explosion welding of the TA1+Q235B titanium steel composite board with large format under the minus-10-DEG C low temperature condition can be realized, the breakage phenomenon of the basic-layer metal board caused by low-temperature brittleness is avoided, and the method has the advantages of being high in production efficiency and good in product quality.

The invention provides a variable-resistance energy-saving blast cap. A core tube is movably sleeved with an inner cover, the size of a gap between the inner cover and the core tube can be changed when primary air is introduced, during operation under low load, the air volume of the introduced primary air is relatively small, at the moment, the gap between the inner cover and the core tube is relatively small, resistance produced when air flow flows through is relatively large, and therefore, uniform air distribution of multiple blast caps when air volume is small is realized; and during operation under high load, the air volume of the introduced primary air is relatively large, at the moment, the gap between the inner cover and the core tube is relatively large, and resistance produced when air flow flows through becomes small, so that energy consumption of a draught fan during operation under high load is reduced. Uniform air distribution with small air volume under low load can be realized, oxygen content is reduced, and NOx emission is reduced; and uniform air distribution with large air volume and small resistance under high load can be realized, energy consumption of the draught fan is reduced, and boiler efficiency is improved.

The invention discloses a construction method for shock-absorbing blasting of an underground space in an urban area, belongs to the technical field of foundation pit excavation engineering, and adopts three different construction methods for a whole blasting area by considering factors such as surrounding environment and topographic conditions. According to the first construction mode, a static crushing method is adopted for construction, and blasting areas within the range of 30 m away from a residential building and 3 m away from an enclosure structure and stand columns are constructed; according to the second construction mode, the blasting depth is smaller than 5 m, and shallow hole loosening is adopted for controlling blasting construction in the area where the section is trimmed and the bottom root is treated; and according to the third construction mode, deep hole weak loosening is adopted for controlling blasting construction in an area with the blasting depth larger than 5 m, before foundation pit excavation blasting, grooves are formed in the periphery, an enclosure structure is manufactured, the grooving depth is larger than the foundation pit depth, blasting construction is facilitated, cover-excavation top-down construction is adopted for urban area underground space excavation, the whole underground space structure is divided into four layers, a digital electronic detonator detonating network is adopted as the detonating network, safe and punctual detonating is guaranteed, and the ideal effect is achieved.

The invention belongs to the technical field of shield underground bedrock boulder blasting, and particularly relates to a shield underground bedrock boulder blasting method which comprises the following operation steps: S1, comprehensively considering the terrain, lithology and surrounding environment conditions of a blasting area through on-site survey of the blasting area of a construction site; the method has the beneficial effects that one end of the bus is connected with the electronic LG controller, the electronic LG controller is controlled to detonate the electronic detonator, and therefore the effects that the blasting effect is good, the blasting speed is high, the blasting speed is high, and the blasting efficiency is high are achieved. And after blasting is completed, the blasting effect is detected, drilling and sampling are conducted again at the middle positions of the four adjacent ground drill holes, whether the sampled samples are broken uniformly or not is checked one by one, and therefore the blasting safety and the blasting uniformity are improved.

The invention discloses a double-branch cable for an electronic blasting system, and a mold, and relates to the technical field of cables. The cable comprise a conductor, an insulating part and a connecting part. The strength of the cable is improved through the tensile property of the high-strength alloy conductor, the wear resistance of the cable is improved through the insulating part and the connecting part which are made of wear-resistant materials and made of insulating materials, and the problem that in the laying process, a blasting system fails and even mistaken blasting occurs in advance due to damage of pulling and dragging to the cable is solved. Moreover, the situations of overlong distance and complex wiring in the actual use process of the digital electronic detonator are avoided. By changing the structure of the cable, the connecting part is added on the basis of the insulating part, a longitudinal water-blocking type connection double-parallel structure is formed through a high-pressure extrusion process, and meanwhile, an antistatic agent is further coated, so that the adhesive force between the conductor and the insulating part is improved, the longitudinal water-blocking performance is ensured, and the antistatic property is enhanced; and the connected double-parallel structure also solves the problems of knotting, twisting and entanglement and the like of the conventional twisted pair in the wiring process.

The invention provides a cofferdam blasting demolition method based on combination of variable linear density charging and digital electronic detonators. According to the cofferdam blasting demolition method based on the combination of the variable linear density charging and the digital electronic detonators, blasting demolition is successfully carried out on the cofferdam by researching the surrounding environment of a blasting area and a blasting scheme and adopting a digital electronic detonator detonating network and variable linear density charging method, the expected effect can be achieved through the method, safety of permanent buildings is guaranteed, and reference significance is achieved for similar blasting engineering.

The invention discloses an internally and externally locking type pre-fixing device adopting rock-wall fixed-point blasting for coal mining. The internally and externally locking type pre-fixing device comprises a first framework, a first connecting block, a fixed block and a connection buckle, wherein a lifting block is mounted in the first framework; a first clamp plate is connected to the rightside of the lifting block; a movable rod is connected to the interior of the lifting block; a rotary shaft is fixed to the bottom of the movable rod; a rotating rod is connected to the bottom end ofthe rotary shaft; the first connecting block is fixed to the right side of the first framework; a locking rod is mounted at the top end of the first connecting block; a first spring is mounted on theouter side of the locking rod; a connecting plate is connected to the top end of the first spring; and a sliding block is fixed to the left side of the connecting plate. The internally and externallylocking type pre-fixing device adopting rock-wall fixed-point blasting for coal mining disclosed by the invention has the device which can fix detonators which are arranged inside the rock wall and outside the rock wall, and can provide convenience for splicing a plurality of devices; and meanwhile, the device is higher in stability, and can provide convenience for users to adjust and use.