| Blasting -> Monitor Keywords |
|
|
 BlastingUSPTO Application #: 20070272109Title: Blasting Abstract: In blasting rock, a drill hole (12) is charged with spaced, composite layers (20), (30, 40) at different levels between an open mouth (14) and a blind bottom (16). Each composite layer is supported on a plug (22, 32, 42). Flowable plunger material (24, 34, 44), e.g. drill cuttings, is supported on the respective plug followed by blast material (26, 36, 46), topped by a further layer of plunger material (28, 38, 48). The plunger material (48) at the top, is in the form of tamping. The composite layers are spaced respectively from one another and optionally, from the bottom (16). Initiators (27, 37, 47) can be actuated by means of a controller to initiate the blasting material to displace the layers of plunger material at speed to collide, e.g. with the bottom and with one another to concentrate enemy at the collision sites. (end of abstract)
Agent: Cozen O'connor, P.C. - Philadelphia, PA, US Inventors: Nils Alberto Heinke, Roger Dean Skaggs, Stephen Mitchell Collinsworth USPTO Applicaton #: 20070272109 - Class: 102312000 (USPTO) Related Patent Categories: Ammunition And Explosives, Blasting, Patterned Blasting, Borehole Arrangement The Patent Description & Claims data below is from USPTO Patent Application 20070272109. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001] THIS INVENTION relates to blasting. It relates more specifically to blasting of rock or other material by means of a blasting substance charged into a drill hole extending into the rock or other material to be blasted. [0002] For purposes of this invention, the term "blasting" is to be interpreted widely to cover, generally, destruction of rock or other material by means of pressure generating or shock wave generating substances such as explosives, propellants, or the like. Likewise, the term "blasting substance" is to be interpreted to cover explosives, propellants and other pressure or shock wave generating substances. [0003] In accordance with a first aspect of this invention, there is provided a method of charging a drill hole extending between a mouth thereof at a surface, and a blind end or bottom thereof remote from the mouth, the method including [0004] providing in the drill hole at a relatively low level toward said bottom a lower layer of a blasting substance, and a lower layer of a plunger material proximately above the lower layer of blasting substance; [0005] providing in the drill hole at a relatively high level remote from said bottom a higher layer of a plunger material, spaced a predetermined distance above said lower layer of plunger material, and proximately above said higher layer of plunger material, a higher layer of a blasting substance; [0006] placing initiators in association with the respective layers of blasting substances and connecting the initiators to a controller for actuating the initiators at predetermined time intervals. [0007] The spacing between opposing surfaces of respectively said lower layer and said higher layer of plunger material may be of the same order of magnitude, i.e. between about 0.5 m and about 3 m. [0008] The respective layers of plunger material may be flowable material allowing placement in the drill hole at the respective desired positions. Drill cuttings are a preferred plunger material. [0009] Said relatively low level may be spatially adjacent a bottom of the drill hole and spaced above the bottom by a predetermined distance. The spacing may be between about 0.5 m and about 3 m, advantageously between about 1 m and about 2 m, preferably about 1.5 m, but depending on several factors, such as the depth of the drill hole, the nature of the rock or other material to be blasted, the nature of the plunger material, the nature of the blasting substance, and the like. [0010] The method may include supporting in each respective case the layer of plunger material and the layer of blasting substance on a plug capable of being positioned in the drill hole at a predetermined level. [0011] By way of development, preferably, the method may include providing plunger material below the lower layer of blasting substance to provide a lower composite layer, providing plunger material above the higher layer of blasting substance to provide a higher composite layer, and providing one or more further composite layers of blasting substance and plunger material in the drill hole, with spacings in-between, in series along the drill hole. Further, preferably, the method may include tamping the drill hole proximate its mouth. [0012] In a variant method, the lower layer of blasting substance may be positioned proximate and may be supported on the bottom of the drill hole. [0013] In accordance with a second aspect of this invention, there is provided a method of blasting a drill hole charged in accordance with the first aspect of this invention, the method including actuating the initiators by means of the controller. The initiators may be actuated simultaneously. They may be actuated electrically or electronically. Instead, they may be actuated pyrotechnically. [0014] The invention extends in accordance with a third aspect to a method of mining including blasting an array of drill holes, each in accordance with the second aspect of this invention. [0015] The invention extends in accordance with a fourth aspect to a charged drill hole extending between a mouth thereof at a surface, and a blind end or bottom thereof remote from the mouth, including [0016] a lower layer of a blasting substance at a relatively high level toward said bottom, and a lower layer of a plunger material proximately above the lower layer of blasting substance; [0017] a higher layer of a plunger material at a relatively high level remote from said bottom, and spaced a predetermined distance above said lower layer of plunger material, and proximately above said higher layer of plunger material, a higher layer of a blasting substance; [0018] initiators placed in association with the respective layers of blasting substances and having connectors for connection to a controller for actuating the initiators at predetermined time intervals. [0019] Thus, generally, the drill hole is charged in accordance with the first aspect of this invention. [0020] The spacing between opposing surfaces of respectively said lower layer and said higher layer of plunger material may be between about 0.5 m and about 3 m. [0021] The respective layers of plunger material may be flowable material allowing placement in the drill hole at the respective desired positions. The plunger material may be drill cuttings. [0022] Said relatively low level may be spatially adjacent a bottom of the drill hole and spaced above the bottom by a predetermined distance. The spacing may be between about 0.5 m and about 3 m, with the preferred range and value, and provisos mentioned above. [0023] In a preferred embodiment, in each respective case or in each respective series, the layer of plunger material and the layer of blasting substance may be supported on a plug positioned in the drill hole at a predetermined level. [0024] By way of preferred development, the charged drill hole may include plunger material provided below the lower layer of blasting substance to form a lower composite layer, plunger material provided above the higher layer of blasting substance to form a higher composite layer, and one or more further composite layers of blasting substance and plunger material, with spacings in-between, in series along the drill hole. Continue reading... Full patent description for Blasting Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Blasting patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Blasting or other areas of interest. ### Previous Patent Application: Blasting method and blasting accessory Next Patent Application: Method of blasting multiple layers or levels of rock Industry Class: Ammunition and explosives ### FreshPatents.com Support Thank you for viewing the Blasting patent info. IP-related news and info Results in 2.96008 seconds Other interesting Feshpatents.com categories: Daimler Chrysler , DirecTV , Exxonmobil Chemical Company , Goodyear , Intel , Kyocera Wireless , |
||
