CN1058784C - Jetting explosive package - Google Patents

Abstract

The present invention provides a jetting explosive package which relates to a straight-line longhole cutting blasting technique. The present invention is mainly composed of a cylindrical shell of a metal medicine package, explosive, a detonator, a powder train, etc. The present invention has the main technical characteristic that the existing paper shell medicine package is changed to use the jetting explosive package of a copper shell or other metal shells or any other shells prepared from firm materials. The use of the present invention aims to prevent and block that the expansion thrust force of detonation gas generated when the explosive in the shell of the jetting explosive package and the thrust force of blasting stress waves can not break and compress rocks near the explosive package, the centralization thrust force is jetted towards a shell opening of the explosive package, the blasted broken rocks of the cutting part are thrown outside the working surface, and the free surface of maximal broken expanding compensation space is obtained. Compared with the existing paper shell explosive package, an unexpected blasting effect can be obtained during blasting.

Description

Spray cartridge bag

The present invention relates to a kind of blasting engineering technology, both related to general blasting engineering, become well straight line longhole Cut Blasting speedy drivage technology as big guns such as the vertical shaft of tunnel under tunnel, tunnel, underground storehouse chamber, great river, the great river and all size and the degree of depth, inclined shaft, shallow wells, also relate in the future and prepare for war the tunnel construction, all be badly in need of a big gun and become lane speedy drivage explosion new technology in case national defence such as nuclear weapon and the strategic tunnel of various guided missile war and seabed take place.

In the existing mine development heading of China, in engineerings such as water conservancy culvert, geology probing, railway, the vcehicular tunnel driving, all need adopt straight-cut longhole blasting technology.But because straight line longhole blasting technology is subjected at present whether rock property, explosive quality be good and bad, the whether influence of factor such as advanced person of rock drilling equipment, blasting efficiency often can not improve.Dark more its minimum burden of main cause borehole is far away more at a distance of the scope of freedom of working face, the rock resistance is big more, current solution: in the slotting of working face straight line longhole, except that beating charging blast-hole, beat not powder charge bum hole again, its minimum burden was by originally changing into towards the blown-out shot eyewall scope of freedom towards the scope of freedom of working face when its purpose made the charging blast-hole explosion, thereby shortened the distance of minimum burden greatly, created necessary condition for improving straight line longhole Cut Blasting efficient.But the distance between bum hole number, bum hole diameter and bum hole and powder charge eye, especially first slotting powder charge eye that detonates and the distance between bum hole will still directly affect straight-cut longhole blasting efficient and improve.If it is improper to grasp, the bad blasting phenomenas such as the mutual asphyxia by external pressure on the chest and abdomen of rubble in " towards big gun ", " induced detonation " and the slotting will appear, and cause the entire working surface blasting efficiency low.For this reason for a long time with-come, all adopt both at home and abroad and deepen slotting bum hole way, oppositely load onto long 20～30 centimetres of paper shell cartridge bags at the intensification position, a stifled last again joint stemming, wait upon after first or second slotting powder charge eye detonate, and then the bum hole paper shell cartridge bag of deepening the position detonates, and the rubble after the-or second slotting powder charge eye are detonated in its effect is thrown in slotting outside the working face, reaches raising slotting powder charge eye blasting efficiency.The rock quarrel method of dishing out of detonating but the empty eye intensification of current this slotting powder charge lags behind, in can only being applied in below 3 meters deep blasthole and than the soft rock explosion-in, sometimes can obtain certain demolition effect, as be applied in 3～10 meters even the unlimited deep blasthole explosion, still adopt present this paper shell cartridge bag, its blasting efficiency of the rock of dishing out quarrel way is to improve, this be in production practices, proved both at home and abroad for a long time (with reference to 3 data one, in September, 81 Geology Publishing House " the exploration driving is learned the first fascicle drill eye blasting engineering, 379～389 pages, Zhang Tianxi etc.; Two, " discussion of longhole blasting Cheng Jing " " explosion " magazine, the second phase in 1984, Xiao of editorial office of building of wuhan institute " explosion " golden hair, Wang Baozhi.Three, " hollow eye is deepened the powder charge hysteresis and detonated " Deng Jin brightness in June, 82 " selected works of blasting method document ".

Above-mentionedly in 3～10 meters or unlimited dark hole firing, can not improve blasting efficiency, main cause is exactly the explosion of slotting lore broken-stone, can not be in time by outside the working face of totally thoroughly dishing out, cause the slotting position not have enough broken bloated compensation space scope of freedoms, having a strong impact on blasting efficiency improves, basic problem is that empty now eye is deepened the paper shell cartridge bag explosion time that use at the position, the high temperature that is produced, high pressure expanding gas thrust and powerful shock wave thrust are broken through not firm paper shell cartridge bag at first and are the taper seat wave direction and carry out fragmentation and compression near near rock around the cartridge bag, only remaining fraction gas tension is only dished out outside the working face on a small quantity to the rubble that explodes earlier of powder charge snubber in the slotting, cause the interior broken bloated compensation space of slotting narrow and small, the serious longhole Cut Blasting efficient that hinders improves, purpose of the present invention, will fundamentally solve exactly-for a long time in 3～10 meters or unlimited deep blasthole explosion and still unsolved both at home and abroad so far this difficult problem, creationary now being improved to the metal-back cartridge bag with paper shell cartridge bag, the whole concentration of energy that produced when making explosive charge are aimed in the slotting first fractured rock they are all dished out outside the working face, and then the interior maximum broken bloated compensation space of acquisition slotting, guarantee to improve deep blasthole and unlimited deep blasthole straight-cut blasting efficiency.

For improving 3～10 meters and unlimited deep blasthole blasting efficiency, and can guarantee that its blast hole utilization factor is not less than 85% higher level, now proposing technical solution of the present invention is: the empty eye at working face deep blasthole straight-cut position is deepened position used paper shell cartridge bag change metallic copper mass shell cartridge bag into, or the cartridge bag of other metal material shell or other any sturdy material material shell becomes the injection cartridge bag.This injection cartridge bag shell can effectively stop and retrain this cartridge bag explosion time and produce detonation gas expansion thrust and explosive stress wave thrust and can not carry out fragmentation and compression by rock near spraying around the cartridge bag, and concentrate thrust to spray to the cartridge bag faucal, clear away the first fractured rock of slotting position slotting powder charge eye effectively, and then the scope of freedom of the maximum broken bloated compensation space in acquisition slotting position, thereby can obtain unforeseeable demolition effect.The structure of this injection cartridge bag shell as shown in Figure 1.Be noted that the length that deepen the bum hole bottom must begin to count the length of being deepened with slotting powder charge eye equal in length place, can only be and deepen length greater than being sure not to be less than or equal to the injection cartridge length.And will spray cartridge bag and just be placed on bum hole and deepen the position.The cartridge bag top refills into 1～2 long 100 millimeters stemming compacting gently.Borehole is dark more simultaneously, requires the bum hole diameter and spray cartridge size all to increase gradually, and the bum hole number also increases, and can only get final product according to rock property and 1,2,3 or 4 of structure situation choice but increase number.Because the bum hole number increases, spray cartridge bag quantity and also increase, select power bigger military shell explosive or commercial explosive to be complementary simultaneously, the borehole straight-cut of any degree of depth all can obtain the effect of unexpected explosion.So the most reliable, science, the most novel longhole blasting theoretical foundation have been started and established to this blasting technique scheme for improving longhole straight-cut quick-fried 3 broken efficient.Must point out emphatically and select reasonable borehole depth conscientiously to consider related factors comprehensively in conjunction with the physical condition of relevant prior art level and our unit.As the concrete condition that our unit produces, the worker sesame of construction and task are finished the organization of labour that the time limit carries out etc.

This specification has 3 width of cloth accompanying drawings

Fig. 1 sprays cartridge bag shell structure figure

Fig. 2 sprays the cartridging structure chart

Fig. 3 spiral cut shot is arranged and igniting time figure

Injection cartridge bag concrete structure of the present invention is as described below, and is illustrated in conjunction with Fig. 1, Fig. 2, Fig. 3 with embodiment.

Spray charge structure as shown in Figure 2.Form by institutes such as cartridge bag shell 1, explosive 2, detonator 3, soft shredded paper 4 and blasting fuses 5.The cartridge bag shell selects for use metallic copper to be pressed into tubular as shown in Figure 1, and nozzle is a horn mouth, and tube neck diameter is slightly less than the stack shell diameter, and the stack shell diameter is less than borehole diameter.Tube one period at the end be a solid bottom level, no sockets for collecting energy, tin general 3～8 millimeters of thickness, surpass more than 5.5 meters as eye is dark, dark more because of borehole, borehole diameter increases relatively, sprays the thickness and the also increase thereupon of diameter of cartridge bag shell simultaneously.Spray general dress commercial explosive or military shell explosive in the cartridge bag barrel shell.Dose in bulk can be 1/3,1/2 or 2/3 and does not wait, and will have detonator on the blasting fuse of suitable length and just put and inject the bulk explosive upper middle position, and with an amount of soft paper obstruction nozzle, spills with anti-scattered medicine.

Before the working face blast firing of powder charge, earlier blow off rock dust rubble in each borehole with blower, when first sprays cartridge bag with second bum hole dress, earlier the injection cartridge bag is delivered to that bum hole is deepened the bottom, position and forward is put, cartridge bag top 1-2 100 millimeter 3 stemming that recharge gently smash compacting such as Fig. 2, shown in Figure 3.Simultaneously blasting fuse is drawn and with other borehole blasting fuse altogether and detonator link, as also the detonator payment to a porter being drawn with electric cap.When blowing out, under blasting fuse length or the strictness of electric cap time difference control, after first slotting powder charge eye detonates, and then the injection cartridge bag at first bum hole intensification position is also followed and is detonated, same after second slotting powder charge eye detonates, and then second bum hole injection cartridge bag also in time followed and detonated.In Fig. 3 ● 101 ' and ● 202 ' shown in.Its purpose makes full use of sprays cartridge bag and produces high temperature and high pressure gas expansion thrust and shock wave thrust detonate rubble under afterwards exploding of first and second slotting powder charge eye is totally dished out outside the working face completely, make the slotting position in time form the maximum broken bloated compensation space scope of freedom, obtain unforeseeable demolition effect for improving longhole straight-cut blasting efficiency and full face hole firing efficient.It is 40 millimeters that present embodiment is selected borehole diameter for use, spray cartridge size is 25 millimeters, at 3.5～5.5 meters working faces that eye is dark, because of rock tough and tensile, under the difficult quick-fried concrete condition of joints development, adopt spiral slotting form and two bum holes to deepen 3 positions and all load onto and spray cartridge bag and strengthen blowing and throw slotting position fractured rock, in the hope of more satisfied demolition effect.Injection cartridge bag shell generally is trapped in sky eyeground portion more and deepens the position after explosion, can also reclaim usefulness again, but metal-back may be grown in blasting broken stone by shake after the explosion sometimes, notices slightly during muck that searching gets final product.

Claims (2)

1. one kind by dress commercial explosive or military shell explosive in the column tubular cartridge bag shell, electric cap or fiery thunder are led the injection cartridge bag of forming with blasting fuse, the cartridge bag shell that it is characterized in that described injection cartridge bag is to be formed by the metal material compacting, the one section long 8-12 millimeter of stack shell in barrel shell bottom is a solid, and the bottom is a level, no sockets for collecting energy, the tube neck is less than stack shell, tube neck upper end is tubaeform nozzle, and the nozzle external diameter equates with the stack shell external diameter, and stack shell external diameter and barrel thickness increase with the bum hole degree of depth and diameter;

2. according to the described injection cartridge bag of claim 1, its feature cartridge bag shell is to be formed by the metallic copper compacting.

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