BG111669A - Torpedo for embedding - Google Patents

Abstract

The torpedo for embedding is applicable in carrying out blasting in opencast mines. It captures gases from the chemical reaction of the explosion, increasing the destructive power of the charge and significantly reduces the quantity of the emitted substances into the atmosphere. The torpedo for embedding (4) has a massive body with conical top and a cylindrical base and is located between the explosive charge (2) and filling (6). In the explosive charge (2) are placed starting detonators (7), between which are placed the containers water (8).

Description

SCORING TORPEDO

Field of technology

The proposed device - "hammer torpedo" and the method of its application are aimed at increasing the efficiency of blasting in open pit mines and reducing their negative impact on the environment.

BACKGROUND OF THE INVENTION

In the current practice in the borehole for blasting, after the explosive is placed, a plug is made / plug /. The purpose of the plunger is to keep the pressure of gases released during the chemical reaction of the explosion higher. The quality of the explosion is a factor that affects the effectiveness of the explosive charge.

Technical essence of the invention

The essence of the invention is that between the explosive charge and the thrust is placed the thrust torpedo. The device is a conical body with a cylindrical base. When the explosion gases act on the lower part of the hammer torpedo, with its conical part it enters the material from which the impactor was made and presses it against the wall of the borehole with a force proportional to the pressure created by the explosion gases.

Explanations of the attached figures

The attached figures 1 to 5 show several variants for the use of the nailed torpedo or its replacement, the elements are as follows:

.Explosive .Explosive

H .Lower fill .3blowing torpedo .Upper fill b .Drill / plug / of the borehole .Starting charges / detonator / .Water containers

Fig. 1 shows the use of the nailed torpedo / 4 / together with the lower filling / 3 / and the upper filling / 5 /.

In Fig. 2 the driving torpedo / 4 / is used only with lower filling / 3 / but it can also be used only with upper filling / 5 /.

C In Fig. 3 the nailed torpedo / 4 / is used without fillings / 3 / and / 5 /.

Fig. 4 shows an example of using only a seal / 3 / between the explosive / 2 / and the drilling hole / 6 /.

Figure 5 shows an example in which water containers are placed between the starting charges / detonators / GP / 8 /.

Description of application of the "hammer torpedo" device and methods for its implementation

Figure 1 shows the main way of applying the nailed torpedo / 4 /. It is applied in extremely strong and monolithic rock massifs where the explosion can throw the plug very early / made in the normal way / and thus reduce the strength of the charge. When the gases from the explosion affect the lower well / 3 / it exerts a sharp pressure on the hammer torpedo / 4 /, it crashes into the upper well / 5 / and so the two bodies / 4 / and / 5 / get stuck in the borehole and allow of the chemical reaction to create a higher pressure than gases. Increasing the gas pressure during the explosion gives new physicochemical properties to the process.

Figure 5 shows that in the core of the charge there are containers with water / 8 /, they are located between the two starting charges / detonators / / 7 /. The presence of water acts as a catalyst on the chemical process of the explosion.

The nailed torpedo / 4 / can be made of various types of materials: wood, polymer, metal, but the easiest realization is made of high quality concrete. The second most important condition is the material from which the lower filling is made / 3 / and the upper filling / 5 / - it must have one important property - to increase its volume during hardening. For the fillings / 3 / and / 5 / different types of construction materials mixed with quartz sand can be used, provided that they have the above mentioned quality. An example of such a material is gypsum. An important condition for the fillings / 3 / and / 5 / is the hardening of the material from which they are made to start after the plug / 6 / of the drilling is placed. Water container / 8 / is made of strong polymeric material / polyethylene terephthalate PET /.

Claims (6)

A nailed torpedo (4) - a massive body characterized in that it has a conical or pyramidal shape on its upper part and a cylindrical lower part (base). 2. Impeller torpedo / 4 / - massive body characterized by having a hemispherical or wedge-shaped upper part and a cylindrical lower part / base /. 3. Lower fill / 3 / and upper fill / 5 / - providing efficient action of the nailed torpedo / 4 /, are characterized by the fact that the material from which they are made during hardening has a volume expansion. C 4. The nailed torpedo / 4 / can be used with the fillings / 3 / and / 5 / or independently. FIG. 1,2,3. 5. When preparing the explosive charge, only filling / 3 / fig.4 can be used 6. When preparing the explosive charge, containers with water / 8 / or hydrogen peroxide / H2O2 / are placed. Figure 5.