101results about How to "Guaranteed blasting effect" patented technology

The invention provides a mine water stemming bag and an application of the mine water stemming bag in borehole blockage. By means of the mine water stemming bag, local self-locking can be achieved, and leakage of a bag opening can be prevented reliably. By applying the mine water stemming bag to borehole blockage and combining with polyurethane expansion foam composites, a convenient, quick, efficient and reliable borehole blockage effect can be achieved, labor intensity of manual borehole blocking is relieved, construction time is shortened, work efficiency is improved, and the forced mining and forced excavation technical requirements of underground metal mines are met on the premise that the blasting effect is guaranteed.

The invention discloses a field emulsion explosive mixing and charging system and charging method suitable for underground engineering. The drug outlet of a mixing machine is connected with the drug inlet end of a drug conveying pump; the drug outlet end of the drug conveying pump is communicated with a drug conveying hose through a water ring adding device; a mixing shaft is arranged in the drug mixing cavity of a mixing machine shell; a premixing chamber is formed above the feeding hole of the mixing machine shell; a drug spray device is arranged at the drug outlet end of the drug conveying hose; a spray head of the drug spray device has a cylindrical structure; and the spray head is provided with a main drug spray hole along the axial lead of the spray head. The aim of ensuring the explosion effect is fulfilled mainly through technical innovations on three aspects: I, the pre-mixing chamber is formed on the top of the mixing machine shell; II, the sensitizing way of the emulsion explosive is physical sensitization; and III, the drug spray device is additionally arranged at the upper end of the drug conveying hose. Meanwhile, specific to the aim of lowering the working pressure of the drug conveying pump, a shearing device arranged on the drug conveying hose and used for increasing the viscosity of the emulsion explosive in the prior art is eliminated.

The invention discloses a blast hole explosion blocking method. The method includes the following construction steps that a, buffering air bags are obtained and are each of a cylindrical structure; b, an explosive is arranged at the middle portion in a blast hole, so that an explosive containing section is formed, then the blast hole is blocked through drilling cuttings, and therefore a dense blocked section is formed; c, the buffering air bags obtained in the step a are sequentially placed in the blast hole, so that a buffering air bag set is formed; d, the step b and the step c are finished repeatedly, so that dense blocked sections and the buffering air bags are arranged alternately; e, the blast hole is blocked through the drilling cuttings, blockage work of the remaining portion of a hole opening is finished, and the last dense blocked section is formed. According to the construction method, due to the fact that the buffering air bag set occupies a large space, the use number of blocking materials is reduced, and labor intensity of workers is relieved; the acting time of explosion gas in the blast hole can be prolonged, so that the explosion crushing effect is improved, the blast hole is effectively prevented from being punched, and the explosion operation safety level is improved.

The invention discloses a blasting method for high-temperature sealed fire areas. The blasting method comprises the following steps that a, blasting design is carried out; b, holes are distributed; c, holes are drilled, checked and accepted; d, five-position temperature measurement is carried out, wherein temperature measurement is carried out twice, according to the temperature measurement of the second time, thermal insulation pieces are placed in blast holes firstly, then the gaps between inner cylinders and outer cylinders of the thermal insulation pieces are filled with water, and the temperatures of all points between the inner cylinders and the outer cylinders are measured ten minutes later; e, design approval is carried out; f, temperature is measured before explosive filling; g, blasting supplies are transported; h, blasting warning is carried out; j, explosive filling preparation is carried out, wherein adhesive plasters are used for fixing explosive columns and filling sections on the same bamboo bar; k, explosive filling is carried out; l, evacuation is carried out; m, initiation is achieved; n, inspection after blasting is carried out; o, warning is withdrawn. According to the method, the thermal insulation pieces are used for separating the temperatures of the blast holes and the explosive and the initiation supplies, the method is simple and reliable, good in safety, low in cost, long in rebound time, and capable of reliably and safely guaranteeing explosive filling and further safely and efficiently achieving blasting.

The invention discloses a blasting lumpiness prediction method and device based on a random GA-BP neural network group, and a medium. The method comprises the steps of acquiring blasting parameters ofa to-be-blasted area; blasting characteristic data are extracted based on the blasting parameters; according to the blasting characteristic data and a preset random GA-BP neural network group blasting lumpiness prediction model, predicting the blasting average lumpiness of the to-be-blasted area; wherein the preset random GA-BP neural network group blasting lumpiness prediction model is obtainedby training a random GA-BP neural network group through historical blasting data of a blasted area; predicting the blasting average lumpiness of the area to be blasted after blasting, and reasonably adjusting and designing blasting parameters to ensure that the blasting effect after blasting meets the working condition requirements; according to the method, the blasting average lumpiness is predicted by using the random GA-BP neural network group blasting lumpiness prediction model, so that the precision and reliability of the blasting average lumpiness prediction value are effectively improved.

The invention relates to a sand blasting processing treatment technology for glass production and manufacture. A baseplate, baffles, the conveying device and treatment devices are involved. The baffles are symmetrically installed on the upper end of the baseplate, the middles of the side faces in the baffles are provided with the conveying devices, and the treatment devices are symmetrically installed between the two baffles. According to the sand blasting processing treatment technology, the problems can be solved that when existing equipment is used for performing sand blasting on glass, a grinding material is easily splashed to the exterior of the equipment usually, the grinding material cannot be effectively protected and is prone to wasting, since the surface of the glass after beingsubjected to sand blasting cannot be quickly cleaned, the grinding material easily adheres to the surface of the glass, the glass is prone to breaking during stacking, when the existing equipment is used for performing sand blasting on the glass, the sand blasting effect is poor, sand blasting is uneven, the part which is not sprayed exists easily on the surface of a glass plate after being subjected to sand blasting, and the application effect of the glass plate in the later period is influenced.

The invention relates to a mine coal roadway tunneling technology, in particular to a safe and rapid tunneling process for a high-outburst mine coal roadway, aiming at solving the problem how to avoid gas outburst in the tunneling process of a highly-gassy mine. The safe and rapid tunneling process comprises the following steps of: carrying out coal body forecasting by using a platform drilling machine, charging blastholes of the platform drilling machine and detonating, waiting for 30min after the detonating, entering a working face unit for outputting coal, supporting the platform drilling machine, entering the next circular working procedure, wherein the detonated blastholes adopt a diamond-cutting cylinder cut method, two large-diameter hollow holes are arranged at the middle part of a diamond cuthole, the circular detonation is controlled within 4m-6m, explosives are detonated at a millisecond time interval by utilizing a millisecond detonator, the blastholes are controlled to detonate successively according to a preset sequence, and the personnel withdraws to reach a safety distance before detonation and hides an anti-explosion movable refuge chamber vehicle.

The invention discloses a blasting peak speed prediction method and device based on RGA-BPNNG and a medium. The method comprises the steps that blasting characteristic parameters of a to-be-blasted area are acquired; according to the blasting characteristic parameters and a preset random GA-BP neural network group blasting peak speed prediction model, predicting the blasting peak speed of the to-be-blasted area, wherein the preset random GA-BP neural network group blasting peak speed prediction model is obtained by training a random GA-BP neural network group through historical blasting characteristic parameters of a blasted area. The blasting peak speed after blasting in the to-be-blasted area is predicted, blasting characteristic parameters can be reasonably adjusted and designed conveniently, and it is guaranteed that the blasting effect after blasting meets the working condition requirement; according to the method, the blasting peak speed is predicted by the random GA-BP neural network group blasting peak speed prediction model, so that the precision and reliability of the blasting peak speed prediction value are effectively improved.

The invention relates to the field of building construction. In order to solve the problem that the perpendicularity of a pile hole is low as a result of a locking hammer and an inclined hole, the invention provides a construction method for an impact-cone concrete pile. The stress face of an impact hammer is uniform, so that the perpendicularity of the pile hole is relatively high. The technicalscheme is as follows: the construction method comprises the following steps: surveying and setting out; positioning and drilling ahead; boulder blasting; impact holing, impacting again after hornstonebackfilling when a same horizontal section in the pile hole includes boulders and soil mass at the same time; mounting a steel reinforcement cage in the hole; and pouring concrete in the hole. The stress face of the impact hammer is uniformly distributed when the same horizontal section in the pile hole includes boulders and soil mass at the same time by backfilling the hornstones, the conditionthat the perpendicularity of the pile hole is reduced as the result of the locking hammer and the inclined hole is avoided, and the perpendicularity of the pile hole is ensured to further guarantee the quality of the impact-cone concrete pile.

The invention discloses a carbon dioxide fracturing pipe explosion-release improving device and an explosion-release method, and belongs to the technical field of explosion. The device comprises a safety protection cover with the diameter larger than the diameter of an explosion release area, and an upper layer and a lower layer of a safety protection cover main body steel plate are wrapped with iron gauze; springs which are vertically upward and are equal in height are uniformly distributed and hung on the iron gauze on the upper layer of the steel plate, and wire gauze which is the same withthe safety protection cover in size is hung on the tops of the springs; a protection pipe which is hung on the lower portion of the steel plate through a hook and is vertically and downwards and reversely embedded in an explosion-release hole is hung on the iron gauze at the lower layer of the steel plate, a protection pipe main body is provided with an extending-out base, and the inner diameterof the protection pipe main body is slightly larger than the outer diameter of a carbon dioxide fracturing device; and a hook for hanging the iron gauze on the steel plate lower layer is arranged at the tail end, in the protection pipe, of the carbon dioxide fracturing device. According to the carbon dioxide fracturing pipe explosion-release improving device and the explosion-release method, a carbon dioxide fracturing pipe is vertically embedded in the explosion release area, safety protection performed before explosion release and rapid collection of repeatedly used parts obtained after explosion release are facilitated.

The invention belongs to the technical field of metal mines and particularly relates to an in-hole micro difference blasting method performing punching in the upward direction of a medium-deep hole and explosive charging in the downward direction of the medium-deep hole. The medium-deep hole is drilled from a lower segment to an upper segment, and communicating with the upper segment is achieved;a blast hole port plug is plugged in a lower hole of a blast hole, blocking stemming is contained in, and hole plugging of a lower hole port is completed; due to the method that a plurality of segments of detonating bombs and bulk explosive are arranged in the blast hole, and the plugging stemming is used in the blast hole to perform multi-segment blasting, the technical problem for achieving in-hole micro difference blasting during medium-deep hole blasting operation under a mine is solved; by means of the method, in-hole micro difference blasting with punching in the upward direction of themedium-deep hole and explosive charging in the downward direction of the medium-deep hole can be achieved, in medium-deep hole blasting simultaneous shaft-sinking, the explosive charging efficiency isimproved, the blasting effect is also guaranteed, and successful blasting shaft-sinking is guaranteed.

The invention discloses a circular ash removing method suitable for a fluidized bed boiler, and belongs to the technical field of ash removal of boiler equipment. The circular ash removing method suitable for the fluidized bed boiler comprises a sand loading step and a recycling step, and is characterized in that in the sand loading step, sand is loaded in a sand hopper of a circular sand ash blower; in a sand blasting step, the sand in the sand hopper is placed in a sandblast, and is sprayed in a shaft at the tail by the sandblast; in the recycling step, after scouring a superheater, an economizer and an air pre-heater, the sand sprayed in the shaft at the tail flows into a fluidized bed of the circular sand ash blower, and is recycled via an auger connected to the fluidized bed; and in a sand lifting step, the sand recycled by the auger is elevated and moves to a position above the sand hopper through an electric hoist, and is discharged into the sand hopper through a sand discharging trolley to form a circular ash removal cycle. By the circular ash removing method suitable for the fluidized bed boiler, the sand can be circularly used to remove ash on a heat exchange component in the shaft at the tail, the heat exchange efficiency is improved, and boiler steam rate is increased. The circular ash removing method suitable for the fluidized bed boiler has the features of low energy consumption and good ash removal effect.

The invention discloses a beam-shaped blast hole cut blasting method for reducing vibration by using random delay errors of common detonators. Firstly, a reasonable arrangement mode and a charging structure of blast holes in a cut blasting area are selected according to the properties of on-site ore rock, the blast holes in the cut blasting area at least comprise a plurality of beam-shaped blast holes positioned in the middle of the cut blasting area, the common millisecond delay detonators with the same section are adopted as the detonating detonators of the beam-shaped blast holes, and short-delay blasting between the detonators at the same section of the beam-shaped blast holes is realized by utilizing the random delay errors between the common millisecond delay detonators at the same section. According to the method, the short-delay blasting mode is formed by utilizing the random delay errors of the common millisecond delay detonators, the reasonable detonator sections are scientifically selected through a Monte Carlo simulation method, the beam-shaped blast hole cut blasting method with the blasting vibration harm controlled is realized, the cut blasting effect can be guaranteed, the blasting vibration effect can be reduced, and the low-cost common millisecond delay detonators can be scientifically and reasonably adopted as the detonating detonators.

The invention relates to the technical field of blasting, and aims at providing an energy-saving and efficient explosive filling method and structure in blast construction. The energy-saving and efficient explosive filling method and structure adopt both emulsion explosive and powder explosive simultaneously and determine the explosive filling sequence according to the situations in blast holes. Meanwhile, the type of explosive at the bottoms is determined according to the water accumulation situations at the bottoms of the blast holes, and the effect of water accumulation on blasting effect is effectively avoided. Meanwhile, a spacer is also used for solving the problem that a hole area in the blast holes or the blast holes are too deep. In order to ensure the blasting effect, explosive packages are hoisted stably by a specific hoisting structure. By adopting the technical scheme, the consumption of explosive is effectively reduced, and the utilization rate of explosive energy is improved.

The invention relates to a tunneling smooth surface blasting method and belongs to the technical field of smooth surface blasting. According to the method, in terms of large-span shallow buried tunnels in urban centers, in order to protect tunnel surrounding rocks and reducing harmful effects of vibration of simultaneous smooth surface blasting to the maximum extent, smooth surface blasting holesare uniformly formed in tunnel rocks, uncoupled charging devices for smooth surface blasting are arranged in the smooth surface blasting holes, and smooth surface hole-by-hole precise short-time-delayblasting is achieved by adopting digital electronic detonators. The delay time of the digital electronic detonators in the holes is set in advance, when hole-by-hole precise short-time-delay blastingis performed, the edge stress distribution of the edges of blast holes is changed through time differences, stress of the blast holes is concentrated, accordingly, cracks are expanded and connected in the blast hole connecting line direction, and compared with simultaneous smooth surface blasting, vibration can be effectively reduced. By means of the blasting method, the smooth surface blasting effect is guaranteed, and blasting vibration in the smooth surface blasting process is also effectively controlled.

The invention discloses a demolition blasting method of a cylindrical steel column structure building. The demolition blasting method comprises the following steps that 1, a gap is cut in a tubular steel column to be blasted; 2, the steel column is filled with water from the gap position; 3, a guide pipe, an inflation bag, a thin rope and a sinking block connected with the thin rope are put in thetubular steel column; 4, the inflation bag is put in the tubular steel column and is inflated; 5, the tubular steel column is filled with cement mortar to form a first concrete block, and the tubularsteel column is filled with cement mortar again to form a second concrete block after first concrete solidifies; 6, after curing is completed, a cartridge bag is blasted, and blasting of the tubularsteel column is completed. The gap is formed in the steel column and is filled with liquid water, the cartridge bag is put, the inflation bag is put and is filled with a thin layer of concrete, the liquid water is sealed in the steel column through concrete, the cartridge bag is blasted, the blasting destroying degree is greatly improved, and a blasting effect can be ensured.

The invention discloses a method for filling blast holes. The method comprises the following steps of: step 1, calculating the explosive consumption of the blast holes per unit or in blasting area per unit according to the blasting environment and a preset blasting purpose; step 2, presetting different explosive densities according to the blasting environment or the blasting purpose of the rock hardness, the rock joint, the surrounding water content and the like; step 3, filling various blast holes with explosives in various densities in a blasting field according to the various explosive densities preset in the step 2; and step 4, backfilling and sealing the blast holes, wherein in the step 3, the explosives in preset densities are filled in the blast holes, the space of the blast holes can be filled, a spacer can be abolished, and sealing opening backfilling sections in certain lengths can be preserved at the outermost ends of the blast holes. The chemical reaction generating efficiency of the explosives can be increased, the blasting effect can be improved, the explosive consumption per unit can be reduced as well, and the purchasing cost of the spacer can be saved.

The invention discloses a fine adjusting device for a pipeline inner wall sand blower. The fine adjusting device comprises a supporting base, a transverse adjusting rod, a transverse limiting rod, a height adjusting column, a handle, a connecting cylinder, a sleeve, snap spring pieces, a clamping base and springs. The supporting base is formed by a base body and a rotating base. The height adjusting base is formed by a base and a connecting base. An inner thread and an outer thread are arranged on the connecting cylinder. The connecting base and the sleeve are both in threaded connection with the connecting cylinder. The springs are arranged on the outer side of the supporting base. The base and the sleeve are connected through a stop screw. The transverse adjusting rod is arranged on the side face of the base body and is in threaded connection with the base body. The transverse limiting rod is arranged on the side face of the base body and connected with the base body through a stop screw. According to the fine adjusting device for the pipeline inner wall sand blower, adjustment on the height and angle of a nozzle of the pipeline inner wall sand blower is achieved by arranging a transverse adjusting mechanism, a longitudinal adjusting mechanism and a limiting mechanism and adjusting the transverse position and the longitudinal position of the fine adjusting device, and the pipeline inner wall sand blowing effect can be better guaranteed.