EA025879B1 - Explosion detonator cartridge - Google Patents

Abstract

The invention is related to the field of industrial explosion equipment. The explosion detonator cartridge (EDC) is designed for initiation of blasthole, borehole and other charges of industrial explosives during conduction of drilling-and-blasting operations. The technical results include higher reliability of impulse transmission to the main blasthole or borehole charge of insensitive industrial explosives, and higher economical efficiency (lower cost) of drilling-and-blasting operations due to lower weight and greater height of ECD. The explosion detonator cartridge including a charge of any explosive or mixtures of various explosives permitted for use in mining industries, having geometrical dimensions and weight suitable for the planned type of blasting operations, manufactured by various methods: casting, pressing, filling; having a shell of various materials or having no shell, and structurally including elements (a blind channel, bores, recesses) required for accommodation of various initiation means, characterized in that the cross-section of the explosive charge has a shape of a figure of constant width comprising a region of intersection of three equal circles having centres at apexes of a regular triangle and radii equal to the triangle side.

Description

The invention relates to the field of industrial blasting equipment. The checker-detonator (SH) of the claimed form is designed to initiate drill holes, boreholes and other charges of industrial explosives (BB) during drilling and blasting operations.

State of the art

It is known from the prior art that the used detonator drafts are generally cylindrical in shape with different ratios of diameter and height, there are rectangular and square detonator drafts, but they are little used in drilling and blasting operations. The diameter of the detonator blocks is mainly determined by the type of blasting and borehole diameter. The height of the detonator checkers is determined by the need to have a blind hole (socket) in the SD design for standard means of initiation and varies from 73-106 mm.

For example,

TS-500 ϋ-62 mm, N-120 mm, Nest depth - 106 mm ¹ ;

TGF-850 ϋ-70 mm, N-111 mm, Nest depth - 100 mm ² ;

PT-P300 Ό-56 mm, N-105 mm, Nest depth - 94 mm ³ ;

T-500KG ϋ-70 mm, N- 86 mm, Nest Depth - 73

MM

In practice, the coordination of these parameters of the drill hole (diameter, height) with the conditions for specific drilling and blasting operations often leads to the fact that their mass becomes excessive for initiating drill holes, boreholes and other charges of industrial explosives.

Thus, the main drawback of the shape of existing drill holes is the lack of the ability to effectively control their parameters (diameter, height) during specific drilling and blasting operations, as a result of which their mass significantly (excessively) increases, which leads to a rise in the cost of these drilling and blasting operations.

Disclosure of invention

The purpose of the invention is to increase the reliability, expand the functionality of the SD and reduce the cost of blasting by improving the shape of the SD.

An object of the invention is the creation of SD of any type (distinguished by the composition of explosives, geometric dimensions, weight, presence and type of shell, manufacturing method, as well as design features designed to accommodate primary means of initiation) with a charge of reduced mass, not inferior in physical and technical characteristics of existing products (analogues and prototypes) and more reliable in operation.

The solution to this problem is achieved by the fact that the SD includes an explosive charge (BB), the cross section of which is a figure of constant width, namely, a figure representing the region of intersection of three equal circles with centers at the vertices of a regular triangle and radii equal to its side, known also like the Ryo Triangle. To a triangular figure of constant width (TFPS), as well as to a circle, which is also a figure of constant width, if you draw a pair of parallel support lines, then regardless of the direction you choose, the distance between them will be constant.

Using the simplest calculations, it can be established that the TFPSh area (8 _{t fpsh} ) with a width (V _{t fpsh} ) equal to the diameter of the circle (And _circle ) is 0.89735 ... the area of the circle (8 _circle ).

Зтфпш / 8 _К round = 0.70477 .... * In _tfps ² / 0.78539 .... * ϋκρ _ΥΓ ² = 0, 89735 ...

^{at V} tfps ^- E. u ^where

The TFSA area consists of the area of an equilateral triangle and three identical circular segments, based on an angle of 60 °

5 _tfpa = 0.5 * (F-73) * V _1fpsh ² = 0.7 0477 .... * V _tfpsh ^g

It is well known that the main purpose of a blast furnace is to reliably detonate from standard means of initiation and transmit a pulse of an undamped detonation wave to the main borehole or borehole charge of low-sensitivity industrial explosives during drilling and blasting operations. The main characteristic of the SD, affecting reliable detonation, is I _crit - a critical diameter with other identical physical and chemical indicators (density, composition, etc.). Characteristic affecting the ability to reliably transmit a pulse detonation wave, and a so-called _pre limiting diameter at which detonation parameters close to the maximum ^{of 5,} i.e. for an explosive of a given density, detonation proceeds in an ideal mode.

As a rule, the dimensions of a cylindrical shaped hole are determined by two parameters: diameter

- 1 025879 should be 2-4 About _{to |} , _t . The height should be not less than the diameter and ultimately determined by the conditions of the specific drilling and blasting operations.

The essence of the invention lies in the fact that the inventive checker-detonator of a triangular shape of constant width (BH _t f _psh ) has an explosive charge of any type (distinguished by explosive composition, geometric dimensions, weight, presence and type of shell, manufacturing method, as well as structural features, intended to accommodate primary initiators) having a cross section in the form of a triangular shape of constant width. The height of the step motor _m ^ _nu be 1,0-1,11435 height checkers detonator cylindrical shape with identical detonation characteristics, and the weight _m ^ _nu SM make the comparison 0,89735-1,0 weight checkers detonator cylindrical shape.

The drawing shows a section, which is the intersection of three equal circles with centers at the vertices of a regular triangle and radii equal to its side, also known as the Ryelo Triangle.

The implementation of the invention

The implementation of the invention will consider a specific example.

As a sample for comparison, we take any commercially available checker-detonator of a cylindrical shape, for example, T-400G, weighing (C _wd ) 400 g, diameter (I _wd ) 70 mm, height (N _wd ) 71 mm ⁶ .

PG _m ^ _nu from detonation characteristics identical sample for comparison, has the following parameters:

Weight (in _t4zh ) = 0.89735 - 1.0 * ^, = 358.94 - 400 gr.

Width (Β ^ φπ ^) = Odd = 70 mm

Height (N _tfgap ) = 1.0 - 1, 11439 * ^ = 71 - 79.12 mm

ШДтфпш can be manufactured within the above limits.

At extreme geometric values, if H _t f _psh = 71 mm, then C _t f _psh = 358.94 g, and at _t f _fsh = 70 mm.

Economic efficiency is achieved by reducing weight while maintaining a width ( _{W t fsh} ) = 70 mm of 2-4 _Crit , which allows reliable detonation from standard means of initiation and a height (Ntfsh) = 71 mm. At the same time, an ideal detonation zone is maintained for reliable transmission of the pulse to the main borehole or borehole charge of low-sensitivity industrial explosives. If N _t f _psh = 79.12 mm, then C _t f _psh = C _wd = 400 g, with V _t f _psh = 70 mm.

Efficiency is achieved by increasing the height (N _tfsh ), which allows to increase the reliability of the transmission of the pulse to the main borehole or borehole charge of low-sensitivity industrial explosives.

Intermediate values of height (Ntfsh) and weight (Stfps) within the above limits allow achieving economic efficiency both due to some decrease in weight (Stfps) and due to some increase in height (Ntfsh), to increase the reliability of impulse transmission to the main borehole or borehole charge of low-sensitivity industrial BB

Thus, the use of _{ШД ТФПШ} allows to increase reliability and significantly reduce the cost of drilling and blasting in mining industries.

_{ШД ТФПШ} can be made from any explosive approved for use in mining, have geometrical dimensions and weights corresponding to one or another type of blasting, can be made in different ways: by casting, pressing, filling, have a shell of various materials and constructively contain elements (blind channel, through channel, grooves, recesses, etc.) necessary to accommodate various means of initiation.

List of sources

1. TU 84-08628424-748-2004.

2. TU 84-08628424-692-97.

3. TU 7288-036-07511608-2000.

4. TU 84-08628424-685-98.

5. A brief encyclopedic dictionary. Under re. Academician B.P. Zhukov. M .: Janus-K, 200 .-- p. 202.

6. OST 84-411-80.

Claims (1)

A detonator checker, characterized in that the cross section of the explosive charge has the shape of a figure of constant width, which is the region of intersection of three equal circles with centers at the vertices of a regular triangle and radii equal to its side.