GB761453A - Improvements relating to the blasting of coal and other minerals - Google Patents

Improvements relating to the blasting of coal and other minerals

Info

Publication number
GB761453A
GB761453A GB2200253A GB2200253A GB761453A GB 761453 A GB761453 A GB 761453A GB 2200253 A GB2200253 A GB 2200253A GB 2200253 A GB2200253 A GB 2200253A GB 761453 A GB761453 A GB 761453A
Authority
GB
United Kingdom
Prior art keywords
water
cartridge
blasting
initiator
passage
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
GB2200253A
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.)
CARDOX GREAT BRITAIN Ltd
Original Assignee
CARDOX GREAT BRITAIN Ltd
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 CARDOX GREAT BRITAIN Ltd filed Critical CARDOX GREAT BRITAIN Ltd
Priority to GB2200253A priority Critical patent/GB761453A/en
Publication of GB761453A publication Critical patent/GB761453A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
    • E21C37/12—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid
    • 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
    • F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
    • F42B3/06—Blasting cartridges, i.e. case and explosive for producing gas under pressure with re-utilisable case

Abstract

761,453. Blasting cartridges. CARDOX (GREAT BRITAIN), Ltd., ATHERTON, S., and SHIMMIN, T. A. Oct. 27, 1954 [Aug. 10, 1953], No. 22002/53. Class 9 (1). In blasting coal and other minerals water is forced into a borehole until fissures and cracks are filled with water and while the pressure subsists a blasting cartridge is discharged in the same or an adjacent borehole, initiation of the cartridge 1 being controlled by the water pressure. The cartridge has a casing 13 for the blasting charge, a discharge head 15 and a firing head 14 from which projects an initiator 16. Pivoted prongs 18 serve to anchor the cartridge in the borehole, the prongs being pivoted outwards by the discharge of gas. Electric leads 6 are brought into the firing head to terminal plugs in openings 23 and are connected to the initiator 16 which is preferably as described in Specification 617,136. The discharge pipe 8 of a pump 10 is connected to a passage 41 communicating through a valve with a passage 47 so that water can be forced into the casing 13 from whence it passes through the venting head into the rock face. When the pressure is sufficient pumping is stopped and the initiator fired, so that the gases then developed force the water out of the casing into the rock. A non-return valve 12 prevents backpressure on the pump and on firing the initiator the valve 44, 48 shuts off the passage 47 from the passage 41. The cartridge may be as in Specification 654,958 divided into two compartments separated by a rupture disc and the pipe 8 may have a branch through which water can be infused into a second borehole. The blasting charge may be liquid or solid carbon dioxide.
GB2200253A 1953-08-10 1953-08-10 Improvements relating to the blasting of coal and other minerals Expired GB761453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2200253A GB761453A (en) 1953-08-10 1953-08-10 Improvements relating to the blasting of coal and other minerals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2200253A GB761453A (en) 1953-08-10 1953-08-10 Improvements relating to the blasting of coal and other minerals

Publications (1)

Publication Number Publication Date
GB761453A true GB761453A (en) 1956-11-14

Family

ID=10172363

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2200253A Expired GB761453A (en) 1953-08-10 1953-08-10 Improvements relating to the blasting of coal and other minerals

Country Status (1)

Country Link
GB (1) GB761453A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055299A (en) * 1959-06-26 1962-09-25 Hercules Powder Co Ltd Blasting apparatus
CN101644156B (en) * 2009-07-17 2011-06-08 中国矿业大学 Method for weakening coal-rock mass by hydraulic blasting and fracturing
WO2012025704A2 (en) * 2010-08-26 2012-03-01 Dgp (Global) Llp Directional gas pressure device
CN102678117A (en) * 2012-05-28 2012-09-19 中国矿业大学 Directional hydraulic fracturing method based on energizing blasting
CN103953342A (en) * 2014-04-11 2014-07-30 山东山矿测控技术有限公司 Improved carbon dioxide explosion initiating device used for coal mine, and assembly method thereof
CN105178933A (en) * 2015-09-22 2015-12-23 中北大学 Environmental protection type under-well formation fracturing device
CN105201481A (en) * 2015-10-17 2015-12-30 山西晋煤集团技术研究院有限责任公司 Liquid CO2 phase transition multipoint fracturing and permeability increasing method
CN106194144A (en) * 2016-08-04 2016-12-07 重庆大学 Liquid carbon dioxide phase transformation directional blasting fracturing device
CN106288988A (en) * 2016-08-31 2017-01-04 北京龙德时代技术服务有限公司 Intelligence carbon dioxide blasting technology method
CN106593443A (en) * 2017-02-20 2017-04-26 山东山矿测控技术有限公司 Carbon dioxide blasting structure and method used for mines, or rock or coal rock
CN107861148A (en) * 2017-10-12 2018-03-30 山东大学 Integrate blast hole projectile filling, water filling and the TSP data acquisition devices measured
CN108981483A (en) * 2018-07-23 2018-12-11 武汉科技大学 A kind of demolition set

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055299A (en) * 1959-06-26 1962-09-25 Hercules Powder Co Ltd Blasting apparatus
CN101644156B (en) * 2009-07-17 2011-06-08 中国矿业大学 Method for weakening coal-rock mass by hydraulic blasting and fracturing
WO2012025704A2 (en) * 2010-08-26 2012-03-01 Dgp (Global) Llp Directional gas pressure device
WO2012025704A3 (en) * 2010-08-26 2012-06-07 Dgp (Global) Llp Directional gas pressure device
CN102678117B (en) * 2012-05-28 2014-10-29 中国矿业大学 Directional hydraulic fracturing method based on energizing blasting
CN102678117A (en) * 2012-05-28 2012-09-19 中国矿业大学 Directional hydraulic fracturing method based on energizing blasting
CN103953342A (en) * 2014-04-11 2014-07-30 山东山矿测控技术有限公司 Improved carbon dioxide explosion initiating device used for coal mine, and assembly method thereof
CN103953342B (en) * 2014-04-11 2016-04-06 山东山矿测控技术有限公司 A kind of improvement carbon dioxide for colliery shatters device and assemble method
CN105178933A (en) * 2015-09-22 2015-12-23 中北大学 Environmental protection type under-well formation fracturing device
CN105201481A (en) * 2015-10-17 2015-12-30 山西晋煤集团技术研究院有限责任公司 Liquid CO2 phase transition multipoint fracturing and permeability increasing method
CN106194144A (en) * 2016-08-04 2016-12-07 重庆大学 Liquid carbon dioxide phase transformation directional blasting fracturing device
CN106288988A (en) * 2016-08-31 2017-01-04 北京龙德时代技术服务有限公司 Intelligence carbon dioxide blasting technology method
CN106593443A (en) * 2017-02-20 2017-04-26 山东山矿测控技术有限公司 Carbon dioxide blasting structure and method used for mines, or rock or coal rock
CN107861148A (en) * 2017-10-12 2018-03-30 山东大学 Integrate blast hole projectile filling, water filling and the TSP data acquisition devices measured
CN108981483A (en) * 2018-07-23 2018-12-11 武汉科技大学 A kind of demolition set

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