39 results about "Dynamite" patented technology

The invention discloses a temperature-resistance thermal insulation protecting bush which is used for charge blasting in a high-temperature blast hole and comprises a cylinder body with a cavity. The cylinder body is formed by stacking a fireproof layer, an insulation layer and a waterproof layer from exterior to interior in a composite mode, the cavity of the cylinder body is filled with a stick dynamite in a non-coupling mode, the gap between the inner wall of the cylinder and the stick dynamite is filled with high heat capacity liquid, the cylinder body is formed by stacking the fireproof layer, the insulation layer and the waterproof layer in the composite mode, each layer is made of heat insulation flame retardant materials, the heat conductivity coefficient is small, in the process that external heat energy is transmitted to the interior of the cylinder body, and the heat is gradually and greatly attenuated. Meanwhile, the high heat capacity liquid serving as energy consumed liquid is contained, the high specific heat capacity characteristics of the liquid are utilized for achieving energy conversion, a large amount of heat is absorbed, it is ensured that the temperature of the stick dynamite in the cylinder body is within the suitable range, under the heat insulation action of the cylinder and the heat absorption action of the high thermal capacity liquid, even though the temperature of the blast hole is high, blasting work can be safely performed, the bush is not limited by construction conditions, and operation is convenient and rapid.

The invention relates to the field of tunnel construction, in particular to a permafrost region road tunnel peripheral hole blasting construction method. The method comprises the following steps of step 1, according to the grade of a tunnel peripheral rock, determining a digging way and the single-circulation advanced depth; step 2, according to the position of the designed digging outline of a tunnel, drilling holes in the periphery at set intervals; step 3, after drilling the holes, cleaning the holes; step 4, filling dynamite into each blast hole, and connecting a percussion cap and a detonating cord; step 5, filling NaCl solution into each blast hole and each shock-absorbing hole, wherein each hole opening is blocked by stemming; step 6, using a blasting way to arrange a blasting network by using area-by-area blasting, blasting the peripheral holes in hole wall position areas, and then blasting the peripheral holes in the arch top. When the tunnel peripheral holes are designed, an un-coupled dynamite filling structure is adopted, and a section-to-section blasting way, a millisecond blasting way and a shock-absorbing design are adopted, so that the blasting heat is reduced, the blasting temperature of the peripheral rock is reduced, the stability of the permafrost is guaranteed, the construction cost is reduced, and construction is simply, conveniently and quickly performed.

Disclosed is a hard roof directional pressurized explosion control method. Special drilling arrangement, loading structures and hole sealing manners are selected according to self-conditions of a roof, pressurized explosion transferring media is used to fully expel air in cracks, the characteristics of low compressing performance and high dynamite utilization rate of the pressurized explosion transferring media is utilized to perform directional or non-directional control explosion to slotted drilling holes or complete drilling holes, and expansion and pulse of the pressurized explosion transferring media are utilized for secondary loosening and weakening of surround rock of the drilling holes to accelerate development and penetrating of the roof cracks and strengthen presplitting weakening of the hard roof. The method mainly includes parallelly drilling holes and alternately loading dynamites at intervals; cutting grooves of the drilling holes; and explosion safety protection. The method is convenient to implement, simple to operate, low in cost and wide in application range, and can be popularized in loosening and weakening of common roofs or top coal and coal layers.

The invention relates to a device of detecting dynamite by backscatter technique, which is characterized in that the device includes a cutting wheel collimating element, an X-actinogen which is arranged in the axial direction of cutting wheel collimating element, a driving element which is arranged below the cutting wheel collimating element, a backscatter detector with circuitry conjunction and a transmission detector. By adopting the new means for forming flying dots, the invention improves the resolution of backscatter image and the ability of assessment dynamite and detonator.

The invention discloses the application of molybdenum trioxide on dynamite preparation, which is as follows: high-power mixed dynamite is prepared from 25 to 35 mass percent of aluminum powder, 50 to 55 mass percent of molybdenum trioxide powder, 10 to 15 mass percent of simple-ingredient dynamite and 2 to 5 mass percent of insensitive agent. The invention also discloses a preparation method of the high-power mixed dynamite. The maximum density, the highest explosion heat and the highest explosion speed of the high-power mixed dynamite prepared by the invention are respectively 1.5g/cm<3>, 4.7 MJ/kg, and 9400 m/s. After explosion, the pollution of the dynamite on the environment is greatly reduced, the dynamite preparation safety is greatly improved, and the prepared dynamite has excellent stability.

The invention provides a heavy section BFe30-1-1/35CrMo explosion welding high-strength high-anticorrosion composite plate. Firstly, the explosion speed of dynamite is controlled within about 800-1000m/s by the optimal design of dynamite formula. Secondly, by a principle of selecting the lower limit of the charging main parameter, the charging auxiliary parameters such as clearance and charging size of basic composite plate are reasonably designed, sand soil foundation added by water is selected and configured and the water content and density thereof are controlled, thus ensuring the once recombination rate of the heavy section BFe30-1-1/35CrMo explosion welding high-strength high-anticorrosion composite plate to achieve 100 percent and the adhesion strength thereof to achieve or even exceed the national standard, and avoiding the crack generation of the heavy section composite plate and high-strength basic plate during the explosion welding process. Finally, the subsequent crack of the composite pate is ensured not to be generated in the subsequent processing by the formulation of heat disposal parameters. The composite plate has ultra-high anticorrosion performance and extremely high high-temperature strength and anti-impact toughness.

The invention discloses a high-energy dynamite charging thermal expansivity measuring device and method. The problem that an existing test device fails to measure solid state dynamite charging thermal expansion characteristic parameters is solved. According to the basic principle of the device and method, a heating jacket is used for heating dynamite charging to a certain temperature, a thermocouple is used for measuring a dynamite temperature in real time, spring steel with a known deformation coefficient is used for measuring pressure generated when the dynamite charging is heated and expanded, meanwhile, deformation of the spring steel is used for pushing a displacement sensor located above to obtain displacement data, and thus, a three-dimensional relational graph of the temperature, the expansibility and the expansion size of the dynamite charging is established. The device and method provided by the invention have the advantages of high universality, high accuracy and low cost, the requirements for measuring expansion parameters of liquid explosives, slurry explosives and all-solid-state explosives can be met simultaneously, and a more comprehensive data support is provided for middle-large sized ammunition charging designs.

The invention provides ammonia dynamite for the explosive compound welding of a titanium plate and a steel plate, which is stable in explosion velocity and good in welding effect. The invention adopts a technical proposal that the ammonia dynamite for the explosive compound welding of the titanium plate and the steel plate comprises the following components by weight percentage: 68 to 74 percent of ammonium nitrate, 8 to 13 percent of wood meal, 14 to 18 percent of sodium chloride and 0.5 to 1.0 percent of modifier, wherein the modifier comprises the following components by weight percentage: 40 to 50 percent of octadecylamine, 15 to 25 percent of wax, 25 to 35 percent of microcrystalline wax and 3.5 to 6.5 percent of sodium lauryl sulfate. The method for preparing the ammonia dynamite for the explosive compound welding of the titanium plate and the steel plate comprises the following steps: mixing the ammonium nitrate and the modifier to puff the ammonium nitrate; adding the wood meal and the sodium chloride; and grinding and mixing the materials to obtain the ammonia dynamite for the explosive compound welding of the titanium plate and the steel plate.

The invention provides a deep-hole bench slight vibrating exploding method which comprises the following steps: decking and blocking in the deep hole exploring hole at intervals and blocking the opening of the hole, leading the sections with explosives to the opening of the hole through different differential millisecond detonators, forming a single hole single fire dynamite network through the different differential millisecond detonators outside the hole, each delay detector outside the hole is connected with a delay detector inside the hole educed to the opening of the hole, and is connected with a detonate electrical detonator and a exploder, so as to achieve the purpose of realizing single hole multi fire dynamite on the premise of single hole single fire dynamite. The method provided by the invention is suitable for deep-hole bench slight vibrating exploding close to residential area with special requirements (particle vibration velocity less than 0.2 cm/s), minimizes the single fire dynamite explosive volume, and realizes slight vibrating exploding. The method provided by the invention is reasonable in design and strong in practicality, improves the efficiency, and accelerates the construction progress.

The invention discloses a method for controlling blasting vibration in adjacent existing tunnel excavation. The method comprises the following steps of setting out for hole layout, shock-absorbing hole layout, positioning and drilling, hole clearing, charging, connecting with a detonating network, excavation and supporting, unexplored dynamite disposing, monitoring and measurement and the like. Through the adoption of a reasonable grooving process, a hole layout mode, a charging structure, a detonation method and a vibration damping method, the disturbance to the existing tunnel during the excavation process can be reduced as far as possible, the excavation footage can be effectively increased, the amount of explosives can be effectively reduced, and the cost is reduced when the construction period is shortened, thereby shortening the impact period of blasting disturbance. The method has great guiding significance and promotion value for newly building tunnels near the adjacent existing tunnels, and has broad application prospects.

The invention relates to a firecracker which comprises a shell, a dynamite-free fuel unit and a connector unit. The connector unit is used for applying voltage to the dynamite-free fuel unit. The dynamite-free fuel unit can generate expansion gas after the preset voltage is applied to the dynamite-free fuel unit, so that expanding pressure triggering explosion is formed. According to the firecracker, the preset voltage needs to be applied to the firecracker, then explosion happens, in comparison with a firecracker with dynamite in the prior art, on one hand, storing and transporting are facilitated, the firecracker is not influenced easily by outside environment, and the potential safety hazard is small; on the other hand, the fuel unit is a dynamite-free unit, after explosion, emission ofa large quantity of gas such as sulfur dioxide and sulfur monoxide is avoided, and environmental pollution is avoided. Explosion only occurs after the voltage needs to applied to each firecracker, the chain reaction does not occur easily, energy generated by explosion is controllable relatively, and the potential safety hazard can be further reduced. The invention further provides a firecracker structure.

The invention is an electric seismic vibrator source of the type used in seismic prospecting for hydrocarbons that creates a quasi-impulsive burst of seismic energy onto the ground and into the earth. The source uses an engine and generator combination to create electric power for all systems on the source such as driving a frame of linear electric motors that direct a rod or piston to contact the ground. All of the linear electric motors are driven against the ground in a high power pulse that delivers a band-limited spectrum of seismic energy over a very brief period of time that would like a “pop” and be measured in milliseconds. A quasi-impulsive seismic pulse would create a wave field that resembles the seismic data acquired using dynamite or other explosive seismic systems without the ultrahigh frequencies of a true explosive pulse. The quick burst or several quick bursts may further speed up the survey by minimizing the time that a vibe spends on a source point.

The invention discloses a blasting network structure for microseismic blasting suitable for urban subway blasting engineering, which includes blastholes distributed on the blasting network, and the blastholes include peripheral holes, cutting holes, driving holes and floor holes. Cutting holes are arranged in the center of the blasting network structure, the peripheral holes, floor holes and driving holes are distributed in the periphery of the cutting holes in sequence, the driving holes are evenly distributed, and the hole spacing of the cutting holes is 1.5 times the hole pitch of the peripheral eye. This application aims at the characteristics of the complexity of urban subway construction compared with general railway tunnel construction. The design of the blasting network structure fully meets the requirements of urban subway construction, and will not damage surrounding facilities, which is safe and reliable.

The invention discloses a composite explosive and making method of stainless steel composite steel board, which comprises the following parts: 95% ammonium nitrate, 4-6% composite oil and 3-10% water-increasing pearlite. The making method of composite explosive comprises the following steps: I, bulking 95% ammonium nitrate; II. adding ammonium nitrate in the 4-6% composite oil; IV. adding 3-10% water-increasing pearlite in the ammonium nitrate; V. stirring evenly; VI. drying.

The invention provides a testing device and method for gap distance of cylindrical dynamite under constraint conditions. The testing device comprises a rigid constraint pipeline (5), a first rigid anti-splash protection cover (4-1), a second rigid anti-splash protection cover (4-2), a first rigid claw-shaped supporting frame (6-1), a second rigid claw-shaped supporting frame (6-2) and a rigid witness steel-plate (7), wherein a positive dynamite distributing bag (2) and a negative dynamite distributing bag (3) are respectively arranged inside the rigid constraint pipeline (5) at a certain space; the positive dynamite distributing bag (2) is positioned at the middle position inside the rigid constraint pipeline (5); and the negative dynamite distributing bag (3) is positioned on one side ofthe positive dynamite distributing bag (2). The testing device and method provided by the invention has the advantages that the testing method is a testing method which is convenient to implement andcan effectively simulate the gap distance of the cylindrical dynamite under blasthole constraint conditions, thus determining the gap distance of the cylindrical dynamite under the blasthole constraint conditions and improving the accuracy of gap distance tests.

The invention discloses an unexploded dynamite processing tool and an unexploded dynamite processing method. The unexploded dynamite processing tool comprises a first excavation member (10) for excavating soil from the ground to a predetermined distance above a grain, a second excavation member (20) for removing sundries from the top of the grain to the predetermined distance above the grain, a moistening device (30) for moistening the soil within the range from the top of the grain to the predetermined distance above the grain, a third excavation member (40) for loosening the moist soil, and a grain lifting and taking member for clamping the grain, and lifting and taking out the grain. The first excavation member, the second excavation member, the moistening device, the third excavation member and the grain lifting and taking member are used in sequence, and the grain can be taken out safely and efficiently; besides, the tool can be manually operated, no more engineering machinery is needed in use, and the processing cost is reduced.

The invention discloses a method for forming a building material in a mode of dynamite explosive blast, which comprises the following steps: digging out a passage (2) and a bin (3) for placing dynamites and materials in a stratum (1), and pouring quantitative amount of a material (4) in the bin (3); placing an explosive cartridge (5) at a position which can contact the material (4); backfilling blockages (6) and fixing a mould (8) in the passage (2); and detonating the explosive cartridge (5) to obtain a material (7) generated under the action of explosive blast. The material (4) is either a hydrous fluid or gel state material or an unhydrous single substance particle or a mixture of a few types of substances. The method uses the stratum as a restraint body for restricting the range of the explosion reaction, thereby having greater flexibility and plastic deformation capacity, safe operation and low cost.