CN109958444A - A kind of perforating gun and application method for metro shield boulder and prominent rock blasting - Google Patents

Abstract

The invention discloses a kind of perforating guns for metro shield boulder and prominent rock blasting, including cylindrical gun body, spiral is equipped with several groups through-hole in gun body, every group of through-hole includes large through-hole and the small through hole being correspondingly arranged with large through-hole, and the large through-hole two sides are equipped with groove, through-hole interpolation entrance aperture bullet, withstand small through hole in the top of perforating bullet, the tail portion of perforating bullet is mounted on pressed seat by spring, and the two sides of pressed seat are extended with buckle, and pressed seat is by being caught in gun body.Perforating bullet, is fixed in gun body using the buckle of elasticity, is firmly installed, moreover, because being improved cavity liner, reduced charge interference, improve the punching quality of perforating bullet by a kind of perforating gun for metro shield boulder and prominent rock blasting of the invention.

Description

A kind of perforating gun and application method for metro shield boulder and prominent rock blasting

Technical field

The present invention relates to a kind of perforating guns for metro shield boulder and prominent rock blasting, belong to explosion field.

Background technique

The perforator hole that state inland basin oil gas field uses at present is close mostly between the hole 10-16/m, can using high hole dense perforation Up to the hole 30-40/m.But with the close increase in hole, perforation is worn but to be declined deeply, and by taking 102 32 holes of type/m perforator as an example, concrete target is worn It is deep to be generally 380mm or so, it is low than 102 16 holes of type/m perforator 550mm wears deep.Its reason mainly has following two sides Face:

(1) it with the increase of Kong Mi, needs to arrange more perforating bullets in an equal amount of rifle, for space in rifle The considerations of limitation and the design of perforating bullet spatial configuration optimal, the outer dimension and explosive payload of perforating bullet usually require to reduce, thus The punching quality of perforating bullet itself is caused to decline.

(2) with the increase of Kong Mi, charge interference is more serious, even if the punching quality of single-shot perforating bullet is good, but is assembled in Its punching quality will appear decline after in rifle, perforate when serious irregular, wear deep 70% or more reduction.

(3) perforating bullet of existing perforating gun such as subsurface rock beehive-shaped charge demolition set and side in a kind of non-excavating construction Shown in method-CN201510949972.X, perforating bullet is compressed by the edge of transmitting terminal, compresses insecure, processing technology height.

Summary of the invention

Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of for metro shield boulder With the perforating gun of prominent rock blasting, perforating bullet is fixed in gun body using the buckle of elasticity, is firmly installed, moreover, because Cavity liner is improved, charge interference is reduced, improves the punching quality of perforating bullet.

Technical solution: in order to solve the above technical problems, one kind of the invention is quick-fried for metro shield boulder and prominent rock Broken perforating gun, including cylindrical gun body, spiral is equipped with several groups through-hole in gun body, every group of through-hole include large through-hole with And the small through hole being correspondingly arranged with large through-hole, the large through-hole two sides are equipped with groove, through-hole interpolation entrance aperture bullet, the top of perforating bullet Small through hole is withstood at end, and the tail portion of perforating bullet is mounted on pressed seat by spring, and the two sides of pressed seat are extended with buckle, pressed seat By being caught in gun body.

Preferably, the material of the pressed seat be plastics, distance of the inner wall of buckle apart from perforating bullet outer wall be 5~ 8mm。

Preferably, the perforating bullet, by main blasting charge, shell case, cavity liner, the cavity liner is located at the top of shell case, it is main Powder charge is located in shell case, and the cover apex angle of cavity liner is α, α=40 °~50.5 °.

Preferably, the wall thickness of the cavity liner is δ, δ=(2%~3%) D, D are cavity liner oral area internal diameter.

Preferably, the advantageous height of burst of the perforating bullet is 1~3 times of cavity liner bottom width.

Preferably, the height of burst of the perforating bullet is no more than 3cm.

Preferably, if rock be gentle breeze and middle differentiation granite, the degree of packing of perforating gun be no less than 7/ Rice, degree of packing is too small, cannot generate penetrating crack destruction.

A kind of above-mentioned application method for metro shield boulder and the perforating gun of prominent rock blasting, including following step It is rapid:

(1) spring is put into pressed seat, perforating bullet is pressed into pressed seat, and entire pressed seat is pressed into large through-hole In；

(2) buckle of pressed seat is caught in gun body, and entire perforating bullet is fixed in gun body；

(3) a series of perforating bullet of Spiral distributions is connected by primacord, perforating gun installs.

The utility model has the advantages that the perforating gun for metro shield boulder and prominent rock blasting of the invention, perforating bullet is placed It on elastic base, is stuck in gun body using buckle, simultaneously as spring acts on, perforating bullet is fixed in through-holes, will not generate It shakes, fixation；The advantageous height of burst of perforating bullet is 1~3 times of cavity liner bottom width, is conducive to jet stream and is stretched to a fixed length Degree, it is ensured that jet stream does not splash when touching target, while the remaining cavity liner for also not destroying not formed jet stream continuously forms jet stream.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of gun body in the present invention.

Fig. 2 is the structural schematic diagram of mounting base in the present invention.

Fig. 3 is the structural schematic diagram of perforating bullet.

Specific embodiment

The present invention will be further explained with reference to the accompanying drawing.

As shown in Figure 1 to Figure 3, a kind of perforating gun for metro shield boulder and prominent rock blasting of the invention, packet Cylindrical gun body 1 is included, spiral is equipped with several groups through-hole in gun body 1, and every group of through-hole include large through-hole and and large through-hole The small through hole being correspondingly arranged, the large through-hole two sides are equipped with groove, and through-hole interpolation entrance aperture bullet 2, the top of perforating bullet 2 is withstood small The tail portion of through-hole, perforating bullet 2 is mounted on pressed seat 4 by spring 5, and the two sides of pressed seat 4 are extended with buckle 3, and pressed seat 4 is logical It crosses buckle 3 to be caught in gun body 1, the bottom of pressed seat 4 is equipped with through-hole, and for connecting detonator, the material of the pressed seat 4 is modeling Material, buckling the distance of 3 inner wall apart from 2 outer wall of perforating bullet is 5~8mm.

In the present invention, the perforating bullet 2 is located at the top of shell case by main blasting charge, shell case, cavity liner, the cavity liner End, main charge are located in shell case, and the cover apex angle of cavity liner is α, and α=40 °~50.5 ° are penetrated when cover apex angle is at 40 °~50.5 ° Hole bullet 2 has maximum Penetration Depth.The wall thickness of the cavity liner is δ, and δ=(2%~3%) D, D are cavity liner oral area internal diameter, cover Wall easily forms fragmentation if blocked up and can not form jet stream；Jet quality of the cover wall if excessively thin due to formation is very little, meeting The Penetration Depth to target is reduced to a certain extent, and when wall thickness is (2%~3%) D, jet stream effect is best.The perforating bullet 2 The advantageous height of burst be 1~3 times of cavity liner bottom width, the height of burst of the perforating bullet 2 is no more than 3cm.Height of burst h refers to target plate The distance between cavity liner lowermost end, its selection directly influence the Penetration Depth after perforating bullet 2 detonates to target.Favorably The height of burst refers to corresponding under maximum Penetration Depth or best crack distribution mode condition in the case where 2 model of perforating bullet selectes situation The height of burst, under the operating condition for guaranteeing to injure target effective, the advantageous height of burst can efficiently reduce explosive payload, weaken explosion to week The influence and save the cost in collarette border.

A kind of above-mentioned application method for metro shield boulder and the perforating gun of prominent rock blasting, including following step It is rapid:

(1) spring is put into pressed seat, perforating bullet is pressed into pressed seat, and entire pressed seat is pressed into large through-hole In；

(2) buckle of pressed seat is caught in gun body, and entire perforating bullet is fixed in gun body；

(3) a series of perforating bullet of Spiral distributions is connected by primacord, perforating gun installs.

The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (8)

1. a kind of perforating gun for metro shield boulder and prominent rock blasting, it is characterised in that: the gun body including cylinder, Spiral is equipped with several groups through-hole in gun body, and every group of through-hole includes large through-hole and the small through hole that is correspondingly arranged with large through-hole, The large through-hole two sides are equipped with groove, through-hole interpolation entrance aperture bullet, and small through hole is withstood on the top of perforating bullet, and the tail portion of perforating bullet is logical It crosses spring to be mounted on pressed seat, the two sides of pressed seat are extended with buckle, and pressed seat is by being caught in gun body.

2. the perforating gun according to claim 1 for metro shield boulder and prominent rock blasting, it is characterised in that: institute The material for stating pressed seat is plastics, and distance of the inner wall of buckle apart from perforating bullet outer wall is 5 ~ 8mm.

3. the perforating gun according to claim 1 for metro shield boulder and prominent rock blasting, it is characterised in that: institute Perforating bullet is stated by main blasting charge, shell case, cavity liner, the cavity liner is located at the top of shell case, and main charge is located in shell case, Types of Medicine The cover apex angle of cover is α,α=40°~50.5°。

4. the perforating gun according to claim 3 for metro shield boulder and prominent rock blasting, it is characterised in that: institute The wall thickness for stating cavity liner isδ, δ=(2%~3%)D,DFor cavity liner oral area internal diameter.

5. the perforating gun according to claim 3 for metro shield boulder and prominent rock blasting, it is characterised in that: institute The advantageous height of burst for stating perforating bullet is 1 ~ 3 times of cavity liner bottom width.

6. the perforating gun according to claim 3 for metro shield boulder and prominent rock blasting, it is characterised in that: institute The height of burst for stating perforating bullet is no more than 3cm.

7. the perforating gun according to claim 3 for metro shield boulder and prominent rock blasting, it is characterised in that: if Rock is gentle breeze and middle differentiation granite, then the degree of packing of perforating gun is no less than 7/meter.

8. a kind of user for metro shield boulder and the perforating gun of prominent rock blasting as described in claim 1 to 7 Method, which comprises the following steps:

(1) spring is put into pressed seat, perforating bullet is pressed into pressed seat, and entire pressed seat is pressed into large through-hole；

(2) buckle of pressed seat is caught in gun body, and entire perforating bullet is fixed in gun body；

(3) a series of perforating bullet of Spiral distributions is connected by primacord, perforating gun installs.