GB767860A - Improved blasting process - Google Patents

Improved blasting process

Info

Publication number
GB767860A
GB767860A GB30094/54A GB3009454A GB767860A GB 767860 A GB767860 A GB 767860A GB 30094/54 A GB30094/54 A GB 30094/54A GB 3009454 A GB3009454 A GB 3009454A GB 767860 A GB767860 A GB 767860A
Authority
GB
United Kingdom
Prior art keywords
head
charges
scoop
bags
pole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB30094/54A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAUMEE COLLIERIES Co
Original Assignee
MAUMEE COLLIERIES Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAUMEE COLLIERIES Co filed Critical MAUMEE COLLIERIES Co
Publication of GB767860A publication Critical patent/GB767860A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/087—Flexible or deformable blasting cartridges, e.g. bags or hoses for slurries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/28—Cartridge cases characterised by the material used, e.g. coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S149/00—Explosive and thermic compositions or charges
    • Y10S149/11—Particle size of a component
    • Y10S149/112—Inorganic nitrogen-oxygen salt

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

767,860. Blasting devices. MAUMEE COLLIERIES CO. Oct. 19, 1954 [Nov. 5, 1953], No. 30094/54. Classes 9 (1) and 68 (1). In blasting rock, a dry bore hole 1a is loaded with ammonium nitrate charges 6 contained in flexible waterproof bags 7 with diameter nearly that of the borehole, the bags being deformed to prevent the formation of air pockets. A primer charge 4 is also introduced so that no point in the nitrate charge is more than 15 to 35 ft. from the primer charge and after stemming the charges the primer is detonated by Primacord 5. The charges 6 are granular free-flowing ammonium nitrate containing less than 1¢ per cent. moisture and mixed with 1 to 12 per cent. by weight of material generating gases on combustion. The combustible material may be carbon black and the waterproof material used for the bags may be polyethylene. The charges are placed in horizontal or sloping boreholes by means of a device having a scoop 10 slidably mounted on a jointed pole 9 having atamping head 11. A stop 13 limits the motion of the head 12 of the scoop, the head being provided with two cut-away sections 15, 16 to co-operate with nylon pins 14 extending from the pole. Longitudinal grooves in the bore of the head 12 are adapted to receive the pins 14. One or more bags of explosive are placed on the scoop, when the pins 14 are flush with the sections 15, 16 of the head 12. The device is then pushed into the borehole until the scoop reaches the bottom of the hole, and the pole is twisted clockwise through 180 degrees, so that the bags drop off the scoop. Then by twisting the pole counter-clockwise through 180 degrees, the pins 14 are brought into register with the grooves in the head 12. By a pull on a wire 23, the scoop is brought against the stop 13 and the pole pressed to bring the tamping head 11 against the explosive and compact the charges in the borehole. All metal parts of the device are of copper or bronze and other parts are of wood, plastic or rubber. The ammonium nitrate, which may have a grain size between 8 and 30 mesh, may be coated with 0.5 per' cent. by weight of rosin. Diatomaceous earth or aluminium stearate may also be used to coat the charges, to render them water-resistant and non-caking.
GB30094/54A 1953-11-05 1954-10-19 Improved blasting process Expired GB767860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US390384A US2703528A (en) 1953-11-05 1953-11-05 Blasting process

Publications (1)

Publication Number Publication Date
GB767860A true GB767860A (en) 1957-02-06

Family

ID=23542259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30094/54A Expired GB767860A (en) 1953-11-05 1954-10-19 Improved blasting process

Country Status (2)

Country Link
US (1) US2703528A (en)
GB (1) GB767860A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111288863A (en) * 2018-12-10 2020-06-16 王海光 Blasting dust settling method

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094443A (en) * 1963-06-18 Table iv
US3050429A (en) * 1962-08-21 Polyethylene inhibitor for propellant
US3091559A (en) * 1963-05-28 Ammonium nitrate explosive
US2992912A (en) * 1961-07-18 Ammonium nitrate explosive composition
US2867172A (en) * 1954-07-19 1959-01-06 Joseph R Hradel Detonation of unprimed base charges
GB780309A (en) * 1955-02-25 1957-07-31 Ici Ltd Improvements in or relating to packages containing a material for use in blasting
US2911046A (en) * 1956-07-05 1959-11-03 William J Yahn Method of increasing production of oil, gas and other wells
US2920523A (en) * 1957-06-04 1960-01-12 Airmite Midwest Inc Method of charging water-filled blast holes with ammonium nitrate and primer cartridge used in same
GB883276A (en) * 1957-06-21 1961-11-29 Consolidation Coal Co An explosive system
US3174545A (en) * 1958-01-13 1965-03-23 Petroleum Tool Res Inc Method of stimulating well production by explosive-induced hydraulic fracturing of productive formation
US3064572A (en) * 1958-01-13 1962-11-20 Union Carbide Corp Method of and means for providing a charge of water sensitive explosive in a blast hole
US3121036A (en) * 1958-02-28 1964-02-11 Canada Iron Ore Co Explosive composition comprising ammonium nitrate and a heat-producing metal
US2966855A (en) * 1958-03-20 1961-01-03 Airmite Midwest Inc Explosive-containing bag used in blasting
US3046888A (en) * 1958-06-16 1962-07-31 Consolidation Coal Co Explosive compositions containing ammonium nitrate
US3094069A (en) * 1959-01-05 1963-06-18 Dow Chemical Co Method of blasting and ammonium nitrate explosive composition
US3075464A (en) * 1959-03-20 1963-01-29 Reserve Mining Co Blast hole charge and charging method
US3095335A (en) * 1960-03-21 1963-06-25 Airmite Midwest Inc Blasting agent of multi-sized and multidensity ammonium nitrate with fuel oil
US3072509A (en) * 1960-04-21 1963-01-08 Du Pont Gelled ammonium nitrate blasting explosive and process
US3139029A (en) * 1960-08-11 1964-06-30 Dow Chemical Co Explosives and method of blasting
US3388014A (en) * 1966-05-27 1968-06-11 Chemical & Ind Corp Ammonium nitrate explosive and process for producing same
US3810425A (en) * 1972-12-04 1974-05-14 J Post Method of blasting with an nh{11 {11 no{11 -{11 nitropropane blasting agent
NL8303966A (en) * 1983-11-17 1985-06-17 Nrf Holding RADIATOR.
US5247886A (en) * 1992-10-14 1993-09-28 The Curators Of The University Of Missouri Blast plug and stemming construction for blast holes
US5253586A (en) * 1992-10-15 1993-10-19 The Curators Of The University Of Missouri Method of stemming a blast hole
US5372058A (en) * 1993-07-26 1994-12-13 The United States Of America As Represented By The Secretary Of The Army Launch package element seater
CA2161200C (en) * 1994-10-24 2004-01-13 Andrew Richard Method for the production of an ammonium nitrate fuel oil blasting composition having improved water resistance
US5480500A (en) * 1994-10-24 1996-01-02 Eti Explosives Ammonim nitrate fuel oil blasting composition having improved water resistance
US6113714A (en) * 1998-04-29 2000-09-05 Eti Canada Inc. Ammonium nitrate fuel oil blasting composition having improved water resistance
KR100316161B1 (en) * 1999-09-16 2001-12-12 강대우 Rock Blasting Method for using Air Tube
AU2003200490B2 (en) * 2002-02-20 2008-05-08 Rocktek Ltd. Apparatus and method for fracturing a hard material
KR100680855B1 (en) * 2005-03-11 2007-02-08 강대우 Air tube for blasting and rock blasting method for using it
CN108952212A (en) * 2018-07-04 2018-12-07 中国人民解放军陆军工程大学 A kind of device and blasting method for exempting to punch demolition blasting tubular steel column
KR20190085836A (en) * 2018-10-23 2019-07-19 권문종 Blasting Method using Liner applied to Primer, Booster
CN109708547A (en) * 2019-01-18 2019-05-03 中国矿业大学(北京) A kind of surface mine presplit blasting means for loading

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE44422C (en) * A. BELOW in Eupen, Rheinprovinz Method of loading wells
GB189403024A (en) * 1894-02-12 1894-03-17 Ludwig Konig Improved Manufacture of Explosives from Nitrate of Ammonia and Resins.
GB189418921A (en) * 1894-10-05 1895-09-21 Oliver Imray Manufacture of a New Explosive.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111288863A (en) * 2018-12-10 2020-06-16 王海光 Blasting dust settling method

Also Published As

Publication number Publication date
US2703528A (en) 1955-03-08

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