CN104713433B - A kind of combination type adjustable layout of linear shaped charge device and blasting method thereof - Google Patents
A kind of combination type adjustable layout of linear shaped charge device and blasting method thereof Download PDFInfo
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- CN104713433B CN104713433B CN201510132948.7A CN201510132948A CN104713433B CN 104713433 B CN104713433 B CN 104713433B CN 201510132948 A CN201510132948 A CN 201510132948A CN 104713433 B CN104713433 B CN 104713433B
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Abstract
The invention discloses a kind of combination type adjustable layout of linear shaped charge device, including linear tube seat and cavity liner, described linear tube seat is the adjustable linear tube seat of combination type, including at least one medicated bag tube seat group, each medicated bag tube seat group includes two medicated bag tube seats, two medicated bag tube seats or at least two medicated bag tube seat group connect the adjustable bipolar or linear tube seat of multipole of formation by the chain jointed tubular workpieces of band cumulative orientation angle, the accommodation space of blasting charge it is provided with in described medicated bag tube seat, the inner end of each medicated bag tube seat is provided with the reserved half bore for placing the primacord that detonates, the outer end relative with reserved half bore is provided with cavity liner, cavity liner is connected together with medicated bag tube seat.In combination type of the present invention is adjustable layout of linear shaped charge device, linear tube seat is general tube seat, different cavity liner, chain jointed tubular workpieces and positioner can be coordinated, highly versatile, easy to operate, cumulative orientation angle is adjustable, wide accommodation, demolition effect is good, the amount of backbreaking is little, Slope leveling, and boundary profile curve is round and smooth.
Description
Technical field
The present invention relates to medical infusion technical field, specifically refer to a kind of combination type adjustable layout of linear shaped charge device and blasting method thereof.
Background technology
For the roadbed of the engineering such as traffic, water conservancy, tunnel, vertical shaft, hole stake, channel side slopes controlled blasting, conventionally employed blasting technique is presplitting (bright finish) explosion, its technical characterstic is intensive boring at side slope, Uncoincided charge in hole, then blocking big gun aperture, the most quick-fried, utilizing explosive blasting generation stress to involve blasting fume stress and make adjacent shot hole medium (such as rock) drawing crack, gases at high pressure contract enters splitting, forms smooth side slope face.This kind of mode charge process is coarse, typically with bamboo chip, explosive is spaced colligation, and fuse arming test experiment initiation technique is thick, meanwhile, also have the disadvantage that 1, Half cast factor typically at 30%-90%, Slope leveling degree is the highest, fluctuates in positive and negative 150mm；2, pitch-row is generally 8 ~ 12 times of big gun footpath, and boring amount is big, and efficiency is low；3, owing to using the mode of intensive boring, its explosive consumption is big, and engineering cost is high；4, big due to the neatest quick-fried dose of presplit blasting, vibrations are big, make originally to be used to the presplit blasting of shock dropping, and presplit blasting vibration impact on the contrary is big.
In order to solve the problems referred to above, occur in that and utilized existing presplitting (bright finish) layout of linear shaped charge blasting principle to carry out bipolar linear cavity energy demolition set, it includes bipolar layout of linear shaped charge tube seat and cavity liner, in this device, bipolar layout of linear shaped charge tube seat is formed in one structure, it is cumulative in plane of symmetry vertical direction, formed at a high speed, high pressure, high density knife-edge detonation product, utilize linear cavity liner that the potential energy of cumulative air-flow is become kinetic energy, can increase seldom in this energy centralized procedure, energy is converted primarily into kinetic energy form, form one speed and kinetic energy metal more higher than gas stream stream, speed reaches 7000 ~ 8000 meter per seconds, so high-speed jet is got on target plate, momentum becomes hundreds thousand of or even million atmospheric pressures, the intensity of target plate material plate or rock seems insignificant.It has advantage as follows relative to conventionally employed blasting technique: pitch-row is 18 ~ 30 times of big gun footpath, boring amount reduces, and efficiency is high, and Slope leveling degree is of a relatively high, owing to boring amount is few, effectively reduce the consumption of explosive, energy-conserving and environment-protective, effectively reduce cost, cost reduces more than 50%, and explosion damages little to retaining side slope, blasting vibration is little, suitable for city explosion.But it there is also following deficiency: 1, owing to bipolar layout of linear shaped charge tube seat is integrated overall structure, the angle of its beehive-shaped charge cavity liner is non-adjustable, the cavity liner of different angles and material cannot be changed, and tries quick-fried test parameter for early stage very inconvenient；2, bipolar linear cavity energy medicated bag, especially center, hole reserved blast hole, needs Special Equipment to carry out charging operation, and on-the-spot processing, it cannot be guaranteed that primacord position in hole is accurate, affects demolition effect；3, existing bipolar layout of linear shaped charge, cumulative direction is straight line, it it is exactly 180 degree, two cumulative angular separation, it is used on straight line outline line effective, non-adjustable yet with bipolar linear cavity energy medicated bag cumulative orientation angle, adjustment direction needs again to make tube seat mould, causes tube seat the most general, not only cost is high, and operates complexity；When 4, carrying out presplitting (bright finish) explosion on tunnel vault curve or inverted arch curve, two-stage cumulative direction is still 180 degree, now after curve slope blasting at holes cumulative blasting line joint the straight line amount of backbreaking X1=R(1/cos α/2-1), the amount of backbreaking is big, and side slope surface irregularity, side slope curve are the roundest and the most smooth.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of highly versatile, easy to operate, cumulative orientation angle is adjustable, wide accommodation and the good combination type adjustable layout of linear shaped charge device of demolition effect.
The present invention can be achieved through the following technical solutions:
A kind of combination type adjustable layout of linear shaped charge device, including linear tube seat and cavity liner, described linear tube seat is the adjustable linear tube seat of combination type, including at least one medicated bag tube seat group, each medicated bag tube seat group includes two medicated bag tube seats, two medicated bag tube seats or at least two medicated bag tube seat group connect the adjustable bipolar or linear tube seat of multipole of formation by the chain jointed tubular workpieces of band cumulative orientation angle, the accommodation space of blasting charge it is provided with in described medicated bag tube seat, the inner end of each medicated bag tube seat is provided with the reserved half bore for placing the primacord that detonates, the outer end relative with reserved half bore is provided with cavity liner, cavity liner is connected together with medicated bag tube seat.By the chain jointed tubular workpieces of cavity liner and band cumulative orientation angle, two or more medicated bag tube seats are combined, different bipolar or multipole beehive-shaped charges can be formed, effectively meet different side slope (bent, straight line) and the requirement of engineering explosion, and its medicated bag tube seat can be general, adapt to different cavity liners and chain jointed tubular workpieces, versatility is good, effectively reduces die cost and cost of manufacture, simple to operate flexibly；The reserved half bore placing the primacord that detonates is arranged on Bao Kong center, medicated bag sockets for collecting energy direction, convenient on-the-spot processing and fabricating；Examination for different rocks or medium is quick-fried, the cavity liner of different materials and angle can be made, owing to cavity liner is connected together with medicated bag tube seat, it is convenient for changing, it is simple to execute-in-place, simultaneously, in order to in-site installation is the easiest, through examination quick-fried determine layout of linear shaped charge parameter after, can be by medicated bag tube seat and cavity liner same material (such as the material such as PVC or iron sheet) one-shot forming for engineering explosion, such in-site installation can be the easiest；According to trying the quick-fried layout of linear shaped charge parameter determined, make the chain jointed tubular workpieces of band cumulative deflection, chain jointed tubular workpieces can any spreading medicated bag tube seat group, two or more medicated bag tube seats are connected by chain jointed tubular workpieces, one pole can be formed, bipolar, three poles or multipole combination, effectively meet the needs of different engineering, the change of cumulative orientation angle can be realized simultaneously, medicated bag tube seat is suitable for the chain jointed tubular workpieces of different angles, corresponding medicated bag tube seat need not be made every time, simplify execute-in-place operation, it is easy to execute-in-place, simultaneously, when vault or inverted arch curve cumulative deflection are less than 180 degree of straight line, the amount of backbreaking of its explosion adjacent shot hole is little, and Slope leveling, boundary profile curve is round and smooth.
Further, described linear tube seat is provided with position, hole keeper, position, described hole keeper bottom parts, middle parts outline are circular, and top part outline is square, and position, hole keeper is enclosed within middle part and the top of linear tube seat, determine cumulative deflection, wherein bottom parts is used for blocking sealing, determines that cumulative deflection, middle parts guarantee Uncoincided charge, top part is square, is used for positioning adjacent shot hole cumulative direction.
Further, described cavity liner is provided with card base, and described medicated bag tube seat sockets for collecting energy bottom is provided with the draw-in groove matched with card base, makes medicated bag tube seat be suitable for the different angles cavity liner with card base, highly versatile, effectively reduces cost of material and cost of manufacture.
Further, the material that makes of described cavity liner is one or more in military copper, molybdenum, tungsten alloy material, iron sheet, plastics, glass or composite, according to different requirement of engineering, makes the cavity liner of different materials.
Further, the wall thickness of described cavity liner is 1mm～2.5mm, and angle is 30 degree～70 degree, and bottom width is the 1/4 of aperture, big gun hole, and aperture, big gun hole is 40mm～50mm, and the wall thickness selection principle of cavity liner is for get the small value than great, and angle takes large values greatly.
Further, described medicated bag tube seat use PVC material make, the thickness of medicated bag tube seat be wall thickness be 1mm～3mm.
Further, described medicated bag tube seat group cross section be dish, it is of course also possible to be other Common Shape.
Further, the pore radius of described reserved half bore is 3.3mm～3.5mm.
Further, described explosive is water-proof explosive or emulsion or aqueous gels or high explosion velocity height brisance rock dynamite, according to different requirement of engineering, selects dissimilar explosive, it is ensured that demolition effect.
It addition, present invention also offers a kind of blasting method utilizing combinations thereof formula adjustable layout of linear shaped charge device to carry out destroying target, it comprises the steps:
The first step, the determination of data of explosive filled, including determination and the determination of cumulative deflection of bore position；
Second step, the making of chain jointed tubular workpieces, according to the big little makings of the cumulative deflection determined in the first step with the chain jointed tubular workpieces of cumulative deflection；
3rd step, uses the chain jointed tubular workpieces made in second step to be coupled together by two or more medicated bag tube seats, is formed and have the bipolar of cumulative deflection or the linear tube seat of multipole；
4th step, by the 3rd step is made there is the bipolar of cumulative deflection or the linear tube seat of multipole is put in big gun hole by position, hole keeper and is positioned, the linear charging density of presplit blasting is 450g/m, then with stemming block big gun hole；
5th step, uses low section of detonator link fuse arming test experiment initiation to destroy target.
Further, the determination of bore position in above-mentioned data of explosive filled, specifically include following steps:
The first step, determine boring standard, setting at the outer X rice of tunnel vault and inverted arch contour curve is drill center line, multiple big gun holes are uniformly preset in the borehole on heart line, adjacent holes cumulative blasting line is all tangent with contour line, and vertical with the radius through 1/4 alpha position respectively, and is intersected on the radius place straight line of 1/2 alpha position, overflowing as X outside intersection, this step relates to equation below:
Formula one: α=180b/(π R),
Formula two: X=R(1/cos α/4-1),
Wherein, α is the central angle of adjacent shot hole,
X is that the curve of band cumulative deflection is backbreak maximum, is also the distance of cloth hole centre-to-centre spacing contour line,
R is contour line sweep (known),
B is the arc length between adjacent holes, for adjacent holes straight hole away from 1.0～1.05 times；
Second step, determine adjacent holes straight hole away from, with letter a represent adjacent holes straight hole away from, letter D represent aperture, big gun hole, straight hole is away from 18～30 times that a is big gun hole aperture D, and concrete numerical value takes optimum according to rock rank correspondence；
3rd step, determine bore position, first pass through the adjacent holes straight hole in second step away from a, calculate arc length b between the adjacent holes in the first step, again arc length b is substituted into formula one and formula two, draw α value and X value, according to X value and then determine that drill center position is with O as the center of circle, with (R+X) be radius formed circumference on, determine bore position in combination with holes straight hole away from a.
Further, the determination of cumulative deflection in above-mentioned data of explosive filled, specifically include following steps:
The first step, determines the size of cumulative deflection, and this step relates to equation below:
Formula three: β=180(1-b/(2 π R)), in conjunction with formula one α=180b/(π R), show that the central angle of adjacent shot hole is as follows with the functional relation of cumulative deflection:
β=180-α/2
Wherein, β is cumulative deflection, and known arc length b and tunnel vault contour line sweep R are substituted into formula three, draws the size of cumulative direction angle beta, then according to the chain jointed tubular workpieces (5) of the big little makings band cumulative deflection of β；
Second step, place Concentrated charge, cumulative two line of direction is tangent with the contour line in two directions respectively, and the radius of 1/4 alpha position is vertical between two big gun holes adjacent with both sides, two cumulative line of direction intersect at being intersected on 1/2 alpha position place straight line of both sides respectively, and Shi Baokong center and the profile line of centres divide cumulative deflection equally；
3rd step, determines that straight line is backbreak value, and this step relates to equation below:
Formula four: X1=R(1/cos α/2-1), the α value drawn and known contour curve radius R are substituted into formula four, draws X1 value, X1 with X is compared, its functional relationship is X1 ≈ 4X.
Combination type of the present invention is adjustable layout of linear shaped charge device and blasting method, compared with prior art, have a following beneficial effect:
The first, cumulative orientation angle is adjustable, according to trying the quick-fried layout of linear shaped charge parameter determined, make the chain jointed tubular workpieces of band cumulative deflection, two or more medicated bag tube seats are connected by chain jointed tubular workpieces, can shape one pole, bipolar, three poles or multipole combination, not only effectively meet the needs of different engineering, realized the change of people's cumulative orientation angle simultaneously by the chain jointed tubular workpieces of band cumulative deflection；
The second, highly versatile, linear tube seat is general tube seat, and linear tube seat is connected together with cavity liner, is connected with chain jointed tubular workpieces fit, adapts to different materials, the cavity liner of different angles and chain jointed tubular workpieces；
3rd, low cost, changes different cavity liners and/or chain jointed tubular workpieces difference changes linear tube seat, effectively reduces the die cost of linear tube seat, cost of material and cost of manufacture；
4th, wide accommodation, by the chain jointed tubular workpieces of cavity liner and band cumulative orientation angle, two or more medicated bag tube seats are combined, different bipolar or multipole beehive-shaped charges can be formed, effectively meet different side slope (bent, straight line) and the demand of different engineering explosion；
5th, simple to operate, flexibly and easily, the reserved half bore placing the primacord that detonates is arranged on Bao Kong center, medicated bag sockets for collecting energy direction, convenient on-the-spot processing and fabricating；Examination for different rocks or medium is quick-fried, the cavity liner of different materials and angle can be made, owing to cavity liner is connected together with medicated bag tube seat, it is convenient for changing, it is simple to execute-in-place, simultaneously, in order to in-site installation is the easiest, through examination quick-fried determine layout of linear shaped charge parameter after, can be by medicated bag tube seat and cavity liner same material (such as the material such as PVC or iron sheet) one-shot forming for engineering explosion, such in-site installation can be the easiest；Medicated bag tube seat is suitable for different materials, the cavity liner of different angles and chain jointed tubular workpieces, need not make corresponding medicated bag tube seat every time, simplify execute-in-place operation, it is simple to execute-in-place；
6th, demolition effect is good, and when vault or inverted arch curve cumulative deflection are less than 180 degree of straight line, the amount of backbreaking of its explosion adjacent shot hole is little, and Slope leveling, boundary profile curve is round and smooth.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of combination type of the present invention adjustable layout of linear shaped charge device；
Accompanying drawing 2 is that combination type of the present invention adjustable layout of linear shaped charge device tries quick-fried big gun hole tangent line figure；
Accompanying drawing 3 is linear tube seat in Fig. 1, chain jointed tubular workpieces and the connection diagram of position, hole keeper；
Reference is: 1, linear tube seat, 11, medicated bag tube seat, 12, reserved half bore, 13, draw-in groove, 2, cavity liner, 21, card base, 3, accommodation space, 4, detonate primacord, 5, chain jointed tubular workpieces, 6, position, hole keeper, 7, big gun hole.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with embodiment and accompanying drawing, product of the present invention is described in further detail.
nullAs shown in Figure 1 to Figure 3，A kind of combination type adjustable layout of linear shaped charge device，Including linear tube seat 1 and cavity liner 2，Described linear tube seat 1 is the adjustable linear tube seat of combination type，Including at least one medicated bag tube seat group，Each medicated bag tube seat group includes two medicated bag tube seats 11，Two medicated bag tube seats 11 or at least two medicated bag tube seat group connect the adjustable bipolar or linear tube seat of multipole 1 of formation by the chain jointed tubular workpieces 5 of band cumulative orientation angle，Described medicated bag tube seat 11 uses PVC material to make，The thickness of medicated bag tube seat 11 be wall thickness be 1mm～3mm，The accommodation space 3 of blasting charge it is provided with in medicated bag tube seat 11，Described explosive is water-proof explosive or emulsion or aqueous gels or high explosion velocity height brisance rock dynamite，The inner end of each medicated bag tube seat 11 is provided with the reserved half bore 12 for placing the primacord 4 that detonates，The pore radius of described reserved half bore 12 is 3.3mm～3.5mm，The outer end relative with reserved half bore 12 is provided with cavity liner 2，Cavity liner 2 is connected together with medicated bag tube seat 11，The making material of described cavity liner 2 is copper、Molybdenum、Tungsten alloy material、Iron sheet、Plastics、One or more in glass or composite.nullThe wall thickness of described cavity liner 2 is 1mm～2.5mm，Get the small value than time great，Take large values when angle is big，Angle is 30 degree～70 degree，Bottom width is the 1/4 of aperture, big gun hole 7，Described cavity liner 2 is provided with card base 21，Described medicated bag tube seat 11 sockets for collecting energy bottom is provided with the draw-in groove 13 matched with card base 21，By card base 21 is inserted draw-in groove 13, cavity liner 2 is assemblied on medicated bag tube seat 11，It is fixedly positioning by position, hole keeper 6 on described linear tube seat 1，It is circular bottom position, described hole keeper 6，It is used for blocking medicated bag tube seat 11 end and hole inner position，Top is square so that adjacent holes positions，And cumulative direction is effectively ensured by design direction cumulative，Position, hole keeper 6 is enclosed within the middle part of linear tube seat 1 makes the middle part of linear tube seat 1 for circular，Determine cumulative deflection，And hole in Uncoincided charge is effectively ensured.
As shown in Figure 1 to Figure 3, one utilizes the adjustable layout of linear shaped charge device blasting method of combinations thereof formula, it is characterised in that: comprise the steps:
The first step, the determination of data of explosive filled, including determination and the determination of cumulative deflection of bore position；
Second step, the making of chain jointed tubular workpieces 5, according to the big little makings of the cumulative deflection determined in the first step with the chain jointed tubular workpieces 5 of cumulative deflection；
3rd step, uses the chain jointed tubular workpieces 5 made in second step to be coupled together by two or more medicated bag tube seats 11, is formed and have the bipolar of cumulative deflection or the linear tube seat of multipole 1；
4th step, is put in big gun hole 7 by have the bipolar of cumulative deflection or the linear tube seat of multipole 1 made in the 3rd step by position, hole keeper 6 and is positioned, and the linear charging density of presplit blasting is 450g/m, then blocks big gun hole 7 with stemming；
5th step, uses low section of detonator link primacord 4 to detonate destruction target.
Fig. 1 combines Fig. 2, the determination of bore position in above-mentioned data of explosive filled, specifically includes following steps:
The first step, determine boring standard, setting at the outer X rice of tunnel vault and inverted arch contour curve is drill center line, multiple big gun holes are uniformly preset in the borehole on heart line, adjacent holes cumulative blasting line is all tangent with contour line, and vertical with the radius through 1/4 alpha position respectively, and is intersected on the radius place straight line of 1/2 alpha position, overflowing as X outside intersection, this step relates to equation below:
Formula one: α=180b/(π R),
Formula two: X=R(1/cos α/4-1),
Wherein, α is the central angle of adjacent shot hole,
X is that the curve of band cumulative deflection is backbreak maximum (i.e. cumulative blasting curve backbreak maximum), is also the distance of cloth hole centre-to-centre spacing contour line,
R is contour line sweep (known),
B is the arc length between adjacent holes, for adjacent holes straight hole away from 1.0～1.05 times；
Second step, determine adjacent holes straight hole away from, with letter a represent adjacent holes straight hole away from, letter D represent aperture, big gun hole, straight hole is away from 18～30 times that a is big gun hole aperture D, and concrete numerical value takes optimum according to rock rank correspondence；
3rd step, determine bore position, first pass through the adjacent holes straight hole in second step away from a, calculate arc length b between the adjacent holes in the first step, again arc length b is substituted into formula one and formula two, draw α value and X value, according to X value and then determine that drill center position is with O as the center of circle, with (R+X) be radius formed circumference on, determine bore position in combination with holes straight hole away from a.
Fig. 1 combines Fig. 2, the determination of cumulative deflection in above-mentioned data of explosive filled, specifically includes following steps:
The first step, determines the size of cumulative deflection, and this step relates to equation below:
Formula three: β=180(1-b/(2 π R)), in conjunction with formula one α=180b/(π R), show that the central angle of adjacent shot hole is as follows with the functional relation of cumulative deflection:
β=180-α/2
Wherein, β is cumulative deflection, and known arc length b and tunnel vault contour line sweep R are substituted into formula three, draws the size of cumulative direction angle beta, then according to the chain jointed tubular workpieces 5 of the big little makings band cumulative deflection of β；
Second step, place Concentrated charge, cumulative two line of direction is tangent with the contour line in two directions respectively, and the radius of 1/4 alpha position is vertical between two big gun holes adjacent with both sides, two cumulative line of direction intersect at being intersected on 1/2 alpha position place straight line of both sides respectively, and Bao Kong center and the profile line of centres divide cumulative deflection equally；
3rd step, determines that straight line is backbreak value, and this step relates to equation below:
Formula four: X1=R(1/cos α/2-1), the α value drawn and known contour curve radius R are substituted into formula four, show that straight line is backbreak value X1 value, X1 with X is compared, its functional relationship is X1 ≈ 4X, that is to say that linear cumulative value of backbreaking is about cumulative blasting curve and backbreaks 4 times of maximum, otherwise, cumulative blasting curve maximum about linear cumulative of backbreaking is backbreak the 1/4 of value.
As shown in Figure 1 to Figure 3, combination type of the present invention is adjustable layout of linear shaped charge device and blasting method thereof, first the parameter after determining according to examination is quick-fried makes cumulative deflection satisfactory chain jointed tubular workpieces 5, then with chain jointed tubular workpieces 5 two medicated bag tube seats 11 are coupled together formation adjustable double polar curve shape tube seat 1, linear tube seat 1 installs cavity liner 2, fill corresponding explosive, then big gun hole 7 is put it into, take the cavity liner bottom width that the height of burst is 0.8～1.05 times of cavity liner 2, then block big gun hole 7 with stemming, finally detonate with low section of detonator link primacord.This device and blasting method is used to carry out explosion, Concentrated charge explosion bipolar with linear value of backbreaking compares, for the tunnel diameter tunnel less than 3 meters, its vault and inverted arch presplitting (bright finish) the explosion amount of backbreaking are less, it is that bipolar Concentrated charge presplitting (bright finish) explosion of existing linear is backbreak the 1/4 of value, contour line after explosion is more smooth, round and smooth, simultaneously, effectively reduce explosion muck removal amount and just prop up gunite concrete amount, beehive-shaped charge more bipolar than existing linear greatly reduces engineering material cost, reduce concussion of blasting, greatly improve blasting efficiency and economic benefit.
In order to further illustrate combination type of the present invention adjustable layout of linear shaped charge device and the effect of blasting method thereof, under the conditions of identical known parameters, i.e. aperture, big gun hole is identical, between adjacent holes in the case of central angle identical (i.e. pitch-row is identical), it is respectively adopted apparatus of the present invention and blasting method thereof and existing linear bipolar Concentrated charge presplit blasting method carries out organizing contrast as follows more, simultaneously, for the ease of calculating, the arc length b value chosen between adjacent holes carries out organizing contrast with adjacent holes straight hole based on a value is identical more, use straight line in the case of the bipolar Concentrated charge explosion of existing linear to backbreak value X1 with detailed description directly perceived and employing combination type adjustable layout of linear shaped charge device carries out the curve of band cumulative deflection in the case of explosion and backbreaks the relation between maximum X.
Owing to D is generally 40mm～50mm, taking D the most respectively is 40 millimeters, 45 millimeters, 50 millimeters, contour line sweep R is chosen for 1.5 meters respectively, 2 meters, 3 meters, adjacent holes straight hole calculates under the conditions of respectively 18 times of aperture, big gun hole D, 25 times and 30 times are away from a, and its result of calculation is as shown in table 1, table 2 and table 3:
Table 1 curve backbreaks maximum X with D, R changing value result of calculation list
Table 2 straight line backbreaks value X1 with D, R changing value result of calculation list
Table 3 straight line value X1 of backbreaking is that curve is backbreak the multiple of maximum X
Can be seen that from table 1, table 2 and table 3, under the conditions of of the same race, the backbreak curve of value X1 about band cumulative deflection of straight line is backbreak 4 times of maximum X, otherwise the curve of band cumulative deflection is backbreak, maximum X about straight line is backbreak the 1/4 of value X1, and this also illustrates under the conditions of of the same race, and the curve of the band cumulative deflection maximum X that backbreaks is far smaller than straight line and backbreaks value X1, and it is known that, the explosion amount of backbreaking is the least, and the contour line after explosion can be the most smooth, round and smooth, and demolition effect is the most more preferably.
The above, only presently preferred embodiments of the present invention, not the present invention is made any pro forma restriction；The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement the present invention swimmingly；But, all those skilled in the art in the range of without departing from technical solution of the present invention, available disclosed above technology contents and a little change made, the equivalent variations modifying and develop, be the Equivalent embodiments of the present invention；Meanwhile, any equivalent variations that above example is made by all substantial technological according to the present invention change, modify and differentiation etc., within all still falling within the protection domain of technical scheme.
Claims (10)
1. a combination type adjustable layout of linear shaped charge device, including linear tube seat (1) and cavity liner (2), it is characterized in that: described linear tube seat (1) is the adjustable linear tube seat of combination type, including at least one medicated bag tube seat group, each medicated bag tube seat group includes two medicated bag tube seats (11), two medicated bag tube seats (11) or at least two medicated bag tube seat group connect the adjustable bipolar or linear tube seat of multipole of formation by the chain jointed tubular workpieces (5) of band cumulative orientation angle, the accommodation space (3) of blasting charge it is provided with in described medicated bag tube seat (11), the inner end of each medicated bag tube seat (11) is provided with the reserved half bore (12) for placing the primacord (4) that detonates, the outer end relative with reserved half bore (12) is provided with cavity liner (2), cavity liner (2) is connected together with medicated bag tube seat (11).
Combination type the most according to claim 1 is adjustable layout of linear shaped charge device, it is characterized in that: described linear tube seat (1) is provided with position, hole keeper (6), bottom, position, described hole keeper (6) is circular, top is square, position, hole keeper (6) is enclosed within middle part and the top of linear tube seat (1), the middle part making linear tube seat (1) is circle, and top is square.
Combination type the most according to claim 2 is adjustable layout of linear shaped charge device, it is characterised in that: described cavity liner (2) is provided with card base (21), and described medicated bag tube seat (11) sockets for collecting energy bottom is provided with the draw-in groove (13) matched with card base (21).
Combination type the most according to claim 3 is adjustable layout of linear shaped charge device, it is characterised in that: the wall thickness of described cavity liner (2) is 1mm～2.5mm, and angle is 30 degree～70 degree, and bottom width is the 1/4 of big gun hole (7) aperture.
Combination type the most according to claim 4 is adjustable layout of linear shaped charge device, it is characterised in that: described medicated bag tube seat (11) uses PVC material to make, the thickness of medicated bag tube seat (11) be wall thickness be 1mm～3mm.
Combination type the most according to claim 5 is adjustable layout of linear shaped charge device, it is characterised in that: the pore radius of described reserved half bore (12) is 3.3mm～3.5mm.
Combination type the most according to claim 6 is adjustable layout of linear shaped charge device, it is characterised in that: described explosive is water-proof explosive or emulsion or aqueous gels or high explosion velocity height brisance rock dynamite.
8. the blasting method of the combination type adjustable layout of linear shaped charge device that a kind utilizes described in claim 1 to 7 any one claim, it is characterised in that: comprise the steps:
The first step, the determination of data of explosive filled, including determination and the determination of cumulative deflection of bore position；
Second step, the making of chain jointed tubular workpieces (5), according to the big little makings of the cumulative deflection determined in the first step with the chain jointed tubular workpieces (5) of cumulative deflection；
3rd step, uses the chain jointed tubular workpieces (5) made in second step two or more medicated bag tube seats (11) to be coupled together, is formed and have the bipolar of cumulative deflection or the linear tube seat of multipole (1)；
4th step, is put in big gun hole (7) by have the bipolar of cumulative deflection or the linear tube seat of the multipole (1) made in the 3rd step by position, hole keeper (6) and is positioned, and the linear charging density of presplit blasting is 450g/m, then with stemming blocking big gun hole (7)；
5th step, uses low section of detonator link primacord (4) to detonate destruction target.
Blasting method the most according to claim 8, it is characterised in that: the determination of bore position in described data of explosive filled, specifically include following steps:
The first step, determine boring standard, setting at the outer X rice of tunnel vault and inverted arch contour curve is drill center line, multiple big gun holes are uniformly preset in the borehole on heart line, adjacent holes cumulative blasting line is all tangent with contour line, and vertical with the radius through 1/4 alpha position respectively, and is intersected on the radius place straight line of 1/2 alpha position, value of backbreaking outside intersection is X, and this step relates to equation below:
Formula one: α=180b/(π R),
Formula two: X=R(1/cos α/4-1),
Wherein, α is the central angle of adjacent shot hole,
X is that the curve of band cumulative deflection is backbreak maximum, is also the distance of cloth hole centre-to-centre spacing contour line,
R is known contour line sweep,
B is the arc length between adjacent holes, for adjacent holes straight hole away from 1.0～1.05 times；
Second step, determine adjacent holes straight hole away from, with letter a represent adjacent holes straight hole away from, letter D represent aperture, big gun hole, straight hole is away from 18～30 times that a is big gun hole aperture D, and concrete numerical value takes optimum according to rock rank correspondence；
3rd step, determine bore position, first pass through the adjacent holes straight hole in second step away from a, calculate arc length b between the adjacent holes in the first step, again arc length b is substituted into formula one and formula two, draw α value and X value, according to X value and then determine that drill center position is with O as the center of circle, with (R+X) be radius formed circumference on, determine bore position in combination with holes straight hole away from a.
Blasting method the most according to claim 9, it is characterised in that: the determination of cumulative deflection in described data of explosive filled, specifically include following steps:
The first step, determines the size of cumulative deflection, and this step relates to equation below:
Formula three: β=180(1-b/(2 π R)), in conjunction with formula one α=180b/(π R), show that the central angle of adjacent shot hole is as follows with the functional relation of cumulative deflection:
β=180-α/2
Wherein, β is cumulative deflection, and known arc length b and tunnel vault contour line sweep R are substituted into formula three, draws the size of cumulative direction angle beta, then according to the chain jointed tubular workpieces (5) of the big little makings band cumulative deflection of β；
Second step, place Concentrated charge, cumulative two line of direction is tangent with the contour line in two directions respectively, and the radius of 1/4 alpha position is vertical between two big gun holes adjacent with both sides, two cumulative line of direction intersect at being intersected on 1/2 alpha position place straight line of both sides respectively, and Bao Kong center and the profile line of centres divide cumulative deflection equally；
3rd step, determines that straight line is backbreak value, and this step relates to equation below:
Formula four: X1=R(1/cos α/2-1), the α value drawn and known contour curve radius R are substituted into formula four, draws X1 value, X1 with X is compared, its functional relationship is X1 ≈ 4X.
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| CN108613603A (en) * | 2018-05-25 | 2018-10-02 | 中国矿业大学 | A kind of fine explosion abrasive material Concentrated charge device and its application method |
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