CN201016669Y - Special apparatus for double-cumulative presplitting and smooth blasting - Google Patents
Special apparatus for double-cumulative presplitting and smooth blasting Download PDFInfo
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- CN201016669Y CN201016669Y CNU2007200626311U CN200720062631U CN201016669Y CN 201016669 Y CN201016669 Y CN 201016669Y CN U2007200626311 U CNU2007200626311 U CN U2007200626311U CN 200720062631 U CN200720062631 U CN 200720062631U CN 201016669 Y CN201016669 Y CN 201016669Y
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Abstract
A special device for dual energy gathering presplitting and smooth-face blasting includes a plurality of energy gathering tube standard sections, the cross section shape of which is of an elliptic ring, a connecting socket which is arranged on energy gathering tube standard sections and which links two energy gathering tube standard sections end to end, an orifice centering ring which is in the orifice of a blast hole and a hole centering ring which is in the blast hole. Two V shape grooves are symmetrically mounted in the energy gathering tube standard sections and the tube wall of the connecting socket along the direction of the long axis. The hole centering ring has a detonating fuse hole and the orifice centering ring, which also has an elliptic ring cross section, covers a ground end of the energy gathering tube standard sections which are in the blast hole. The top of the orifice centering ring wall is symmetrically equipped with two V-shaped centering grooves which have same directions and positions with the V-shaped energy gathering grooves in the standard sections. The utility model has advantages of improving blasting energy utilizing ratio, strengthening blasting effects greatly, reducing holes to be made, a simple and applicable process and low cost. Blasting has little influence on the remaining rock and integrity and stability of the remaining rock are improved with a more smooth blast surface.
Description
Technical field
The utility model belongs to the blast working field, is specifically related to a kind of presplitting and photoface exploision device.
Background technology
The late nineteen eighties, those skilled in the art once attempted to adopt paper material processing cumulative pencil shaping cumulative powder stick to do the cumulative Study of presplitting blasting experiment, but the restriction because of technology and technological level can't be used for normal construction eventually, so a very long time cumulative Study of presplitting blasting experiment stays cool.The extensive expansion of the flourish and national capital construction of hydroelectric development after the nineties, the needs of engineering construction make scholars produce great interest to the experimental study of cumulative presplit blasting again, and recent years is in the ascendant especially.The cumulative pencil shaping cumulative powder stick that numerous scientific workers have designed various forms, various materials carries out the cumulative Study of presplitting blasting experiment, mainly contains following several form:
1) papery cumulative powder stick
The 3rd the water conservancy and hydropower blasting engineering meeting interchange data in September, 1991 whole nation discloses Feng Zhengya: " Preliminary Applications of Mohaupt effect in presplit blasting ".It is to use hard paper to make cumulative pencil shaping cumulative powder stick, because of technology is difficult to reach the presplit blasting test that requirement can only be finished tens square meters.
2) deep hole grooving technology
The 17th the 2nd phase of volume of in June, 2003 " Guizhou hydroelectric generation ", Luo Wen: disclose a kind of deep hole grooving technology in " utilizing deep hole grooving and multidirectional cumulative powder column blasting technique to obtain the imagination of oversize rock material ", it is to be that aperture (Φ 42～51mm), utilizes 300MN/m less than the shallow bore hole of 3m at hole-wall slot
2High pressure water jet method or improve grooving of common air rock drill and be shaped, (Φ 100～150mm) then adopts special-purpose grooving facility, and the blasthole hole wall cutting is formed the cumulative structure in the large aperture.
3) " LSC " powder column
Sweden Lulra university, Sweden's explosion foundation disclose a kind of " LSC " powder column, it is to be used for Φ 45～51mm big gun hole, diameter of phi 11, Φ 16 special band V-type groove round plastic pencils, V-type troughs for collecting energy surface is pasted aluminium flake and is made, in adorn high explosion velocity Tai'an (PETN) explosive.Explosion velocity 7600～7700m/s of PETN, quick-fried hot 5024kj, density (1.5 ± 0.05) g/cm
3, linear charging density 280g/m.
The 22nd the 12nd phase of volume of in December, 2003 " rock mechanics and engineering journal ", what full sea: disclose a kind of some strip binding energy tube in " two-way cumulative stretching explosion new technology ", it is to have arranged the two row's cumulative holes that are linear distribution at round tube upper edge direction initialization, each place, cumulative hole all accumulates an energy stream, produces cumulative action thereby form two some strip energy stream interfaces along direction initialization.The powder charge form is the serial powder charges at interval of Φ 25 two-way cumulative devices, linear charging density 150～250g/m.
5) line style wedge shape binding energy tube
The 19th the 4th phase of volume of in November, 2002 " uranium ore smelting ", Xie Shengquan: disclose a kind of line style wedge shape binding energy tube in " application of simple analysis beehive-shaped charge in presplit blasting ", adopt the beehive-shaped charge of side direction line style wedge shape, make cavity liner with depleted uranium or copper sheet or other metals and the energy level major part of energy-gathering jetting can be shown as the kinetic energy form, to form, under " quasistatic pressure " effect of detonation gas, form the crack simultaneously much larger than worn the jet face of penetrating certain depth by the surge of quick-fried medium compressive ultimate strength.
6) two-way jet cutter
The 29th the 3rd phase of volume of in June, 2006 " fiery explosive journal ", Zhou Yao etc.: disclose a kind of two-way jet cutter in " development and the application of two-way cumulative presplit blasting cutter ", it is that employing metal energy gathering cap is main blasting charge with low explosion velocity commercial explosive, drive main blasting charge detonation with two detonating explosive bars, make main blasting charge produce the cumulative detonation wave and generate the strong cumulative gas and the two-way jet cutter of metal jet, can be used for presplitting (light face) explosion and rock cutting etc.
7) metal structure cumulative bullet
" the Chinese explosion new technology " of metallurgical industry in September, 2004 publishing house publication, high Jintang Liu Jun etc.: disclose a kind of metal structure cumulative bullet in " compound Pre-splitting Blasting Technique ", it adopts the all-metal construction form, utilize detonating explosive to ignite the complicated cumulative structure of low explosive, be applicable to big gun hole, large aperture (Φ 250).Single cumulative snap the line degree of packing 2547～2709g/m adopts arranged in series at interval in the big gun hole.
8) presplit blasting dedicated devices
Chinese patent ZL03234195.4 discloses a kind of presplit blasting dedicated devices.It comprises the bassoon that arbitrary shape of cross section is all identical; Its tube wall extends on circumference, forms the sockets for collecting energy of two intervals, 180 degree, and the angle of sockets for collecting energy also comprises the tubule that shape is similar with bassoon, diameter is less between 35～55 degree; Comprise that also reducing connects: connect a straight length respectively by hollow pipe fitting two ends and form by tapering; Comprise that also shape is identical, be respectively applied for the loam cake and the lower cover that are fastened on tubule and bassoon outer end: the two base plate middle part has the primacord hole.But because its reducing connects and do not have sockets for collecting energy, can't form complete pre-broken face, can't centering in the hole, pre-broken face can't align.
There are following problem in above-mentioned each presplitting and smooth Surface Blasting Technology:
1, its greatest drawback is all not have " centralising device ", so energy-gathering jetting can not guarantee also just can't normally give full play to the effect of energy-gathering jetting along pre-broken face or quick-fried injection of light, can't make complete energy-gathering jetting face of energy-gathering jetting formation.
2, the cumulative powder stick of formed thereby generally all is circular, does not change the distribution of forces situation of explosive to the explosion blasthole hole wall.
3, complex structure, the borehole engineering amount is big in the construction, the cost height, and also bigger to the damaging effect that keeps rock mass; Do not possess practical value, be difficult to wide popularization and application in engineering.
4, owing to there are the problems referred to above, above-mentioned each presplitting and smooth Surface Blasting Technology there is no the report of large scale application.
The utility model content
Technical problem to be solved in the utility model is to overcome above-mentioned prior art defective, provide a kind of improve the blasting energy utilization rate, greatly strengthen the presplitting effect, reduce after pore-creating amount, simple, the convenient practicality of construction technology, with low cost, the explosion to keep the rock mass damage influence little, improve the integrality and the stability that keep rock mass, the more smooth double focusing of explosion face can presplitting and photoface exploision isolated plant.
For solving the problems of the technologies described above, the utility model adopts following technical proposals.
Double focusing of the present utility model can presplitting and photoface exploision isolated plant, it is characterized in that: it comprises that the more piece shape of cross section is that the binding energy tube standard knot of elliptical ring, the splice sleeve that is placed in the two joint binding energy tube standard knots that binding energy tube standard knot first line of a couplet adaper tail joins, the hole centering that is positioned at the aperture centering ring in aperture, big gun hole and is positioned at the big gun hole encircle; The tube wall upper edge transverse direction of described binding energy tube standard knot is symmetrically arranged with two V-type troughs for collecting energy, the shape of cross section of splice sleeve also is an elliptical ring, its tube wall upper edge transverse direction also is symmetrically arranged with two V-arrangement troughs for collecting energy with the V-type troughs for collecting energy tabling of binding energy tube standard knot, centering ring comprises that a shape of cross section is the centering sleeve pipe in the hole on the binding energy tube standard knot that is placed in of elliptical ring in the hole, the waist of centering sleeve pipe is provided with the centering round platform in the hole, has the primacord hole on the centering round platform; Aperture centering is located on the end, ground of the binding energy tube standard knot that is positioned at aperture, Loose Blasting hole, its cross section also is an elliptical ring, the ring wall top is provided with and is symmetrical arranged and identical two the V-type centering grooves that are used for the centering sign in V-arrangement troughs for collecting energy orientation of orientation and binding energy tube standard knot, waist is provided with the connection platform, connects platform and is provided with the fixing hole that is used for fixing aperture centering ring.
The angle [alpha] of the V-arrangement troughs for collecting energy of described binding energy tube standard knot and the V-type troughs for collecting energy of splice sleeve is between 60～90 degree.
Described binding energy tube standard knot and splice sleeve are uniform wall thickness, and thickness is 2mm.
Described binding energy tube standard knot and splice sleeve can adopt polyvinyl chloride to make, and the centering ring can adopt polypropylene to make in aperture centering ring and the hole.
Described fixing hole is 4, is symmetric arrangement.
Centering sleeve pipe symmetric arrangement is 2 in the ellipse short shaft direction of described primacord hole centering sleeve pipe in the hole and the adjacent hole.
Compared with prior art, the beneficial effects of the utility model are: the utility model is according to presplit blasting, photoface exploision action principle, will hope for success restraining fully by blasting technique, the on-the-spot connection, go to adjust the length of binding energy tube standard knot joint number and aperture binding energy tube standard knot according to hole depth, simple and convenient, practicality, economy, efficient and with low cost.Remedied that in situ preparation presplitting cartridge bag workload is big, the time is long, be subjected to the space, the restriction of material, technology restriction.Owing on the binding energy tube standard knot, be provided with two troughs for collecting energy, the utilization rate of blasting energy is greatly improved, centering ring and aperture centering ring make double focusing form a face in the hole and between the hole by the groove center line in the hole, the presplitting of this face and required construction or photoface exploision in the face of in overlap, energy-gathering jetting sprays along this face, and fit like a glove with presplit blasting face or photoface exploision face, presplitting and photoface exploision effect have been strengthened greatly, adopt oval binding energy tube, changed distribution ratio to the blasthole hole wall active force, strengthened the blast action power of presplitting (light is quick-fried) one-tenth seam direction, because the gas sword effect of energy-gathering jetting and the comprehensive function of burst stress ripple will make that the presplitting of double focusing energy is more more smooth than common presplitting or photoface exploision face with the presplitting or the photoface exploision face of photoface exploision, the effect of burst stress ripple, the expansion of gases at high pressure, the gas sword effect of energy-gathering jetting will can interact in the moment that rock mass forms the crack, make the easier formation in crack and expanded fully and extend, this has also just correspondingly reduced the face degree of packing and the unit are pore-creating amount of presplitting (light face) explosion, and has reduced the damaging effect of explosion to basement rock greatly, the integrality and the stability that keep rock mass have been strengthened.This device is through construction test repeatedly, by statistics analytical proof and common presplitting or photoface exploision mutually specific energy reduce explosive consumption 50～60%, reduce pore-creating amount 50～60%, reduce cost 50～55%.The utlity model has good popularization and application prospect.
Description of drawings
Fig. 1 is the package assembly schematic diagram of isolated plant of the present utility model at presplitting (light is quick-fried) face;
Fig. 2 is the cutaway view of Fig. 1 along the A-A line;
Fig. 3 is the package assembly schematic diagram of the utility model device;
Fig. 4 is the profile of Fig. 3 along the B-B line;
Fig. 5 is the profile of Fig. 3 along the C-C line;
Fig. 6 is the planar structure schematic diagram of aperture centering ring;
Fig. 7 is the cutaway view of Fig. 6 along the D-D line;
Fig. 8 is the cutaway view of Fig. 6 along the E-E line;
Fig. 9 is the planar structure schematic diagram of centering ring in the hole;
Figure 10 is the cutaway view of Fig. 9 along the F-F line;
Figure 11 is a perspective view of the present utility model.
Each label is represented among the figure:
1, aperture centering ring 12, connection platform 2, big gun hole
3, centering ring in the V-type troughs for collecting energy 4 of binding energy tube standard knot 31, binding energy tube standard knot, the hole
41, centering sleeve pipe 42, centering round platform 421, primacord hole in the hole
5, V-type troughs for collecting energy 6, the iron wire of splice sleeve 51, splice sleeve
7, fixing hole 8, injection moulding steam vent 9, V-type centering groove
10, powder stick is strengthened in bottom, big gun hole
The specific embodiment
Double focusing energy presplitting of the present utility model and photoface exploision isolated plant are shown in Fig. 1～11, it comprises that the more piece shape of cross section is that the binding energy tube standard knot 3 of elliptical ring, the splice sleeve 5 that is placed in the two joint binding energy tube standard knots 3 that binding energy tube standard knot 3 first line of a couplet adaper tails join, the hole centering that is positioned at the aperture centering ring 1 in aperture, big gun hole and is positioned at the big gun hole encircle 4, respectively save binding energy tube standard knot 3 by splice sleeve 5 connections, make its length reach blast hole depth; As shown in Figure 5, the tube wall upper edge transverse direction of binding energy tube standard knot 3 is symmetrically arranged with two V-type troughs for collecting energy 31; The shape of cross section of splice sleeve 5 of joint that is positioned at two end to end binding energy tube standard knots 3 is also for elliptical ring, the internal diameter of splice sleeve 5 is identical with the external diameter of binding energy tube standard knot 3, as shown in Figure 4, its tube wall upper edge transverse direction is symmetrically arranged with two V-type troughs for collecting energy 51 with V-type troughs for collecting energy 31 tablings of binding energy tube standard knot, can guarantee that end to end two binding energy tube standard knots, 3 close proximity become integral body, full hole is up and down point-blank in big gun hole 2 at the center that so just can guarantee V-type troughs for collecting energy 31.The angle [alpha] of the V-type troughs for collecting energy 31 of binding energy tube standard knot and the V-type troughs for collecting energy 51 of splice sleeve can be between 60～90 degree, and present embodiment is 80 degree.As Fig. 3,9, shown in 10, centering ring 4 comprises that a shape of cross section is the centering sleeve pipe 41 in the hole on the binding energy tube standard knot 3 that is placed in of elliptical ring in the hole, centering sleeve pipe 41 internal diameters are identical with binding energy tube standard knot 3 external diameters in the hole, the waist of centering sleeve pipe 41 is provided with centering round platform 42 in the hole, the external diameter of centering round platform 42 is slightly less than the aperture in Loose Blasting hole 2, and certain clearance is left in 2 in Loose Blasting hole, so that it can be sent in the Loose Blasting hole 2 smoothly and turn, have primacord hole 421 on the centering round platform 42,2 of centering sleeve pipe 41 symmetric arrangement in the ellipse short shaft direction of primacord hole 421 centering sleeve pipe 41 in the hole and the adjacent hole in this example.Primacord passes in primacord hole 421.Number according to centering ring 4 in joint number, splice sleeve 5 and the hole of the degree of depth in Loose Blasting hole 2 decision binding energy tube standard knot 3, can be equipped with centering ring 4 in the hole on every joint binding energy tube standard knot 3, it is placed in the middle that the utility model that are installed in the big gun hole 2 are accomplished presplitting (light face) Loose Blasting hole 2 in, is unkitted hole centering ring 4 (both sides of the V-type troughs for collecting energy 31 of first segment binding energy tube standard knot 3 ends are tied with reinforcement powder stick 10 in bottom, big gun hole can play hole centering encircle 4 effect) on the first segment binding energy tube standard knot 3 of 2 bottoms, big gun hole but be positioned in the present embodiment.In this example, binding energy tube standard knot 3 length are 3 meters, big gun hole 2 dark 12 meters, adopt the binding energy tube standard knot 3 of 3 meters long at 4 joints, a sheathed splice sleeve 5 between every adjacent two joint binding energy tube standard knots 3, centering is encircled the setting of 4 adjacent splice sleeves, 5 tops in the hole, but also can be positioned over other position on the binding energy tube standard knot 3.Originally after being installed on the 2 interior installations of Loose Blasting hole, aperture centering ring 1 is placed in the end, ground of the binding energy tube standard knot 3 that is positioned at 2 apertures, Loose Blasting hole, shown in Fig. 6,7,8, aperture centering ring 1 its cross section also is an elliptical ring, the ring wall top is provided with and is symmetrical arranged and identical two the V-type centering grooves 9 that are used for the centering sign in V-type troughs for collecting energy 31 orientation of orientation and binding energy tube standard knot, waist is provided with and connects platform 12, connect platform 12 and be provided with the fixing hole 7 that is used for fixing aperture centering ring 1, fixing hole 7 is 4, is to be symmetrically arranged in to connect on the platform 12.The angle [alpha] 1 of V-type centering groove 9 is 60 degree, after all the aperture centering ring 1 in Loose Blasting hole 2 is adjusted centering, the aperture centering ring 1 in adjacent big gun hole is strained and fixed with iron wire 6 by set fixing hole 7 on it, make the V-arrangement troughs for collecting energy center in each big gun hole form straight line along pre-broken face or photoface exploision face, each V-arrangement troughs for collecting energy center line forms a face in each big gun hole and between the big gun hole, the presplitting of this face and required construction or photoface exploision in the face of in overlap, whole like this energy-gathering jetting jet face just fits like a glove with presplitting (light face) explosion face and in one plane.When the crack begins to form, energy-gathering jetting is sprayed along the minute crack of initial formation behind the ignition charge, and then form presplitting or photoface exploision face, finish cumulative presplitting or photoface exploision because of the expansion of gases at high pressure and the gas sword effect of high energy air-flow.
Binding energy tube standard knot 3 and splice sleeve 5 are uniform wall thickness, and thickness is 2mm.Binding energy tube standard knot 3 and splice sleeve 5 adopt polyvinyl chloride (PVC) to make, and centering ring 4 adopts polypropylene (PP) to make in aperture centering ring 1 and the hole.Be equipped with injection moulding steam vent 8 on the centering round platform 42 of centering ring 4 in the connection platform 12 of aperture centering ring 1 and the hole.
The construction technology of this device is as follows:
(1) at first binding energy tube standard knot 3 is installed explosive, and number according to on-the-spot big gun hole at explosives magazine;
(2) numbering the 1st joint binding energy tube standard knot 3 that will install explosive according to the big gun hole sends in the big gun hole 2, and bind bottom, big gun hole in the both sides of the V-type troughs for collecting energy 31 of first segment binding energy tube standard knot 3 ends that are positioned at 2 bottoms, big gun hole according to designing requirement and strengthen powder stick 10, put splice sleeve 5 at the 1st joint binding energy tube standard knot 3 tail ends, the 2nd joint binding energy tube standard knot 3 head ends are put centering ring 4 back insertion splice sleeves 5 in the hole, and make in the hole centering encircle 4 adjacent splice sleeves 5, the V-type troughs for collecting energy 51 of splice sleeve 5 is just chimeric naturally with the V-type troughs for collecting energy 31 of binding energy tube standard knot 3 like this;
(3) according to step (2), contrast big gun hole numbering is sent the binding energy tube standard knot 3 of identical numbering into big gun hole 2, and be connected to design length according to this by splice sleeve 5, per 3 meters long binding energy tube standard knots 3 are joined centering ring 4 in the hole, so just can accomplish that mounted binding energy tube standard knot 3 is placed in the middle in the hole in presplitting (light face) Loose Blasting hole 2;
(4), primacord passes in the primacord hole 421 on the centering ring 4 in the hole and is fastened with adhesive plaster, after connecting good double focusing and can pipe standards saving 3 installations, put aperture centering ring 1 in binding energy tube standard knot 3 ends of exposing the big gun hole, rotate aperture centering ring 1, check centering with backguy, make V-arrangement centering groove 9 center lines of each aperture centering ring 1 form a center line, the center line of V-arrangement centering groove 9 is overlapped with pre-broken face of design or photoface exploision face along presplitting (light face) explosion face.The center line of each V-type troughs for collecting energy of Ge Jie binding energy tube standard knot 3 is on a face about so just can guaranteeing in each big gun hole 2, so also just can guarantee face of center line formation of the V-type troughs for collecting energy 31 of the binding energy tube standard knot 3 in center line and each the Loose Blasting hole 2 of V-arrangement centering groove 9 of each aperture centering ring 1, presplitting (light face) explosion of this face and required construction in the face of in overlap, aperture centering ring 1 with adjacent big gun hole is strained and fixed and shutoff big gun hole with iron wire 6 by fixing hole 7 then, promptly accuses installation to this double focusing energy presplitting and photoface exploision isolated plant;
(5) at last the primacord networking in each big gun hole is ignited, will be behind the device explosion of the present utility model because the expansion of gases at high pressure and the gas sword effect of high energy air-flow make energy-gathering jetting spray along presplitting (light face) explosion face when the crack begins to form, in other words after two troughs for collecting energy binding energy tube blasts, the effect of burst stress ripple, the expansion of gases at high pressure, the gas sword effect of energy-gathering jetting will can interact in the moment that rock mass forms the crack, make the easier formation in crack and expanded fully and extend, this has also just correspondingly reduced the face degree of packing and the unit are pore-creating amount of presplitting (light face) explosion, and has reduced the damaging effect of explosion to basement rock greatly, strengthened the stability that keeps rock mass.Since the comprehensive function of the gas sword effect of energy-gathering jetting and burst stress ripple will make adopt double focusing can presplitting and the presplitting of smooth blasting method construction or photoface exploision face become the seam face more smooth than what adopt the construction of common presplitting or smooth blasting method.
3 powder charges of this binding energy tube standard knot can be finished in explosives magazine or the on-the-spot movable builder's temporary shed that is fit to, and also can form specialty processing, directly provide construction to use.This binding energy tube standard knot 3 powder charge places should be satisfied ventilation, daylighting, be thrown light on, take shelter from rain, prevent requirements such as thunder and lightning, static.Area and standard are determined according to engineering.The sectional dimension of double focusing energy presplitting and photoface exploision isolated plant is determined according to different lithology, different pore-creating diameter.
Claims (8)
1. a double focusing can presplitting and photoface exploision isolated plant, it is characterized in that: it comprises that the more piece shape of cross section is that the binding energy tube standard knot (3) of elliptical ring, the splice sleeve (5) that is placed in the two joint binding energy tube standard knots (3) that binding energy tube standard knot (3) first line of a couplet adaper tail joins, the hole centering that is positioned at the aperture centering ring (1) in aperture, big gun hole and is positioned at the big gun hole encircle (4); The tube wall upper edge transverse direction of described binding energy tube standard knot (3) is symmetrically arranged with two V-type troughs for collecting energy (31), the shape of cross section of splice sleeve (5) also is an elliptical ring, its tube wall upper edge transverse direction also is symmetrically arranged with two V-arrangement troughs for collecting energy (51) with V-type troughs for collecting energy (31) tabling of binding energy tube standard knot, centering ring (4) comprises that a shape of cross section is the centering sleeve pipe (41) in the hole on the binding energy tube standard knot (3) that is placed in of elliptical ring in the hole, the waist of centering sleeve pipe (41) is provided with centering round platform (42) in the hole, has primacord hole (421) on the centering round platform (42); Aperture centering ring (1) is placed in the end, ground of the binding energy tube standard knot (3) that is positioned at aperture, Loose Blasting hole, its cross section also is an elliptical ring, the ring wall top is provided with and is symmetrical arranged and identical two the V-type centering grooves (9) that are used for the centering sign in V-arrangement troughs for collecting energy (31) orientation of orientation and binding energy tube standard knot (3), waist is provided with and connects platform (12), connects platform (12) and is provided with the fixing hole (7) that is used for fixing aperture centering ring (1).
2. double focusing according to claim 1 can presplitting and photoface exploision isolated plant, it is characterized in that the V-arrangement troughs for collecting energy (31) of described binding energy tube standard knot and splice sleeve V-type troughs for collecting energy (51) angle [alpha] 60～90 spend between.
3. double focusing according to claim 2 can presplitting and photoface exploision isolated plant, and the angle [alpha] that it is characterized in that the V-type troughs for collecting energy (51) of the V-arrangement troughs for collecting energy (31) of described binding energy tube standard knot and splice sleeve is 80 to spend.
4. according to claim 1 or 2 or 3 described double focusings energy presplitting and photoface exploision isolated plants, it is characterized in that described binding energy tube standard knot (3) and splice sleeve (5) are uniform wall thickness, thickness is 2mm.
5. according to claim 1 or 2 or 3 described double focusings energy presplitting and photoface exploision isolated plants, it is characterized in that described binding energy tube standard knot (3) and splice sleeve (5) are polyvinyl chloride pipe, the ring that centering ring (4) is made for polypropylene in aperture centering ring (1) and the hole.
6. according to claim 1 or 2 or 3 described double focusings energy presplitting and photoface exploision isolated plants, it is characterized in that described fixing hole (7) is 4, be symmetric arrangement.
7. can presplitting and photoface exploision isolated plants according to claim 1 or 2 or 3 described double focusings, the ellipse short shaft direction that it is characterized in that described primacord hole (421) centering sleeve pipe (41) in the hole is 2 of centering sleeve pipe (41) symmetric arrangement in the adjacent hole also.
8. double focusing energy presplitting according to claim 7 and photoface exploision isolated plant is characterized in that described fixing hole (7) is 4, are symmetric arrangement.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007200626311U CN201016669Y (en) | 2007-03-05 | 2007-03-05 | Special apparatus for double-cumulative presplitting and smooth blasting |
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| CNU2007200626311U CN201016669Y (en) | 2007-03-05 | 2007-03-05 | Special apparatus for double-cumulative presplitting and smooth blasting |
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