Surface blasting product

• US 9,010,246 B2
• Filed: 04/06/2011
• Issued: 04/21/2015
• Est. Priority Date: 04/06/2010
• Status: Expired due to Fees

• Current Assignee: Sandvik Mining and Construction RSA Limited (Sandvik AB)
• Original Assignee: Sandvik Mining and Construction RSA Limited (Sandvik AB)
• Inventors: Leppanen, Jarmo Uolevi
• Primary Examiner(s): Bergin, James S
• Application Number:
  US13/639,556
• Publication Number:
  US 20130145950A1
• Time in Patent Office: 1,476 Days
• Field of Search: 102/301, 102/302, 102/305, 102/306, 102/307, 102/308, 102/309, 102/310, 102/312, 102/313, 102/319, 102/321, 102/321.1, 102/324, 102/331, 102/332, 102/293, 299/13, 86/50
• US Class Current: 102/306
• CPC Class Codes: F42B 1/02 Shaped or hollow charges blasting cartridges with cavities in the charge F42B3/08; oil winning using shaped-charge perforators E21B43/116
• CPC Class Codes: F42B 3/08 with cavities in the charge, e.g. hollow-charge blasting cartridges
• CPC Class Codes: F42B 3/10 Initiators therefor percussion fuzes F42C7/00; percussion caps F42C19/10; electric primers F42C19/12
• CPC Class Codes: F42D 1/00 Blasting methods or apparatus, e.g. loading or tamping
• CPC Class Codes: F42D 1/02 Arranging blasting cartridges to form an assembly adaptation of blasting cartridges therefor F42B3/02
• CPC Class Codes: F42D 1/22 Methods for holding or positioning for blasting cartridges or tamping cartridges
• CPC Class Codes: F42D 3/04 for rock blasting

Abstract

A surface blasting product which includes a container, a receptacle which contains adhesive which is displaceable to adhere the container to a rock, and an explosive charge, inside the container, which can be ignited to fragment or displace the rock.

Claims

1. A surface blasting product, comprising:

a bellows,

a container,

an explosive inside the container,

a mechanism for initiating the explosive,

a receptacle which contains an adhesive,

a conduit connected at a first end to an outlet of the receptacle and connected at a second end to a first end of the container, and

an actuator arrangement for causing adhesive to be displaced from the receptacle, through the conduit, and onto an outer surface of the first end of the container,

wherein the container is housed inside the bellows and the bellows has an axial length that is expandable.

2. A surface blasting product according to claim 1 which includes a device, for mixing adhesive which is displaced from the receptacle, adjacent the outer surface of the first end of the container.

3. A surface blasting product according to claim 2 wherein the adhesive includes, at least, a base material and an activator and the receptacle has at least a first compartment for the base material and a second compartment for the activator and the mixing device causes mixing of the base material and the activator.

4. A surface blasting product according to claim 2 wherein the device includes mixing screws.

5. A surface blasting product according to claim 2 wherein the device is located in a recess on the outer surface of the first end of the container.

6. A surface blasting product according to claim 1 wherein the outer surface of the first end of the container has a recessed formation in fluid communication with the receptacle and the adhesive is displaceable into the recessed formation, between the container and a rock to be blasted.

7. A surface blasting product according to claim 1 wherein the actuator includes a flexible bladder inside the receptacle, which contains the adhesive, and a connection for introducing a pressurised fluid into the receptacle thereby to pressurise the bladder externally and so displace adhesive from the bladder.

8. A surface blasting product according to claim 1 wherein the receptacle includes a cylinder which contains the adhesive and the actuator includes a piston which is movable inside the cylinder to displace adhesive from the cylinder.

9. A surface blasting product according to claim 1 which includes a support to which the container is mounted and wherein the container is movable relative to the support.

10. A surface blasting product according to claim 9 wherein the support includes a flexible joint which, in use, is mountable to an elongate component in a manner which permits at least a limited degree of movement of the container relative to the elongate component.

11. A surface blasting product according to claim 1 wherein a shaped charge is included inside the container.

12. A surface blasting product according to claim 11 wherein the container has a conical or pyramidal shape with a base located at the first end of the container and wherein the shaped charge is directly adjacent a base of the container.

13. A surface blasting assembly which includes at least two surface blasting products, each product being according to claim 1, which are configured so that the respective explosives are initiated simultaneously.

14. A surface blasting product according to claim 1 wherein the axial length of the bellows extends from a base end that is fixed to a surface of the receptacle to a distal end that is fixed to the first end of the container.

15. A surface blasting product according to claim 1 wherein the container has a conical or pyramidal shape with a base located at the first end of the container.

16. A surface blasting product according to claim 1 wherein the conduit is external to the container and the bellows.