GB1130991A - Noise reduction - Google Patents

Noise reduction

Info

Publication number
GB1130991A
GB1130991A GB33717/66A GB3371766A GB1130991A GB 1130991 A GB1130991 A GB 1130991A GB 33717/66 A GB33717/66 A GB 33717/66A GB 3371766 A GB3371766 A GB 3371766A GB 1130991 A GB1130991 A GB 1130991A
Authority
GB
United Kingdom
Prior art keywords
tunnel
explosion
weight
water
noise
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
GB33717/66A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1130991A publication Critical patent/GB1130991A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D5/00—Safety arrangements
    • F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
    • B21D26/08—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves generated by explosives, e.g. chemical explosives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
    • B23K20/08—Explosive welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D5/00—Safety arrangements
    • F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
    • F42D5/055—Silencing means for blasting operations

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

1,130,991. Reducing the noise of explosions. E.I. DU PONT DE NEMOURS & CO. 27 July, 1966 [29 July, 1965], No. 33717/66. Heading A5A. The noise of an explosion in a process involving the detonation of an explosive charge is reduced by dispensing water particles into the path of the shock wave emanating from explosion by simultaneously detonating a separate charge to disperse the water. The weight of water dispersed is at least 10 and up to 100 times the weight of the main and 100 and up to 15,000 times the weight of the separate explosive charge. The main explosion may be in a confined space excavated out of rock and the water dispersed in a tunnel venting the confined space and over an area extending at -least 100 feet along the tunnel. The tunnel may also be provided with a massive movable plug closing 95% of the cross-sectional area of the tunnel. The plug may suitably be a loaded truck movable on rails.
GB33717/66A 1965-07-29 1966-07-27 Noise reduction Expired GB1130991A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US475719A US3397756A (en) 1965-07-29 1965-07-29 Reduction of explosive shock and noise by dispersion of water particles

Publications (1)

Publication Number Publication Date
GB1130991A true GB1130991A (en) 1968-10-16

Family

ID=23888821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33717/66A Expired GB1130991A (en) 1965-07-29 1966-07-27 Noise reduction

Country Status (3)

Country Link
US (1) US3397756A (en)
DE (1) DE1571276A1 (en)
GB (1) GB1130991A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306884A (en) * 1995-11-08 1997-05-14 John Humphries Parkes Suppressing explosions

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638754A (en) * 1970-12-16 1972-02-01 Du Pont Pressure and sound shield for blast excavation of tunnels and the like
US3823793A (en) * 1972-10-02 1974-07-16 Asahi Chemical Ind Semi-sealed silencer structure
US4192553A (en) * 1978-04-03 1980-03-11 Occidental Oil Shale, Inc. Method for attenuating seismic shock from detonating explosive in an in situ oil shale retort
US4201419A (en) * 1978-08-21 1980-05-06 Occidental Oil Shale, Inc. Control of airblast during explosive expansion in an in situ oil shale retort

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US232640A (en) * 1880-09-28 Method of blasting
DE81320C (en) *
GB624771A (en) * 1945-11-07 1949-06-16 Anders Henrik Carl Jespersen Method of blowing-up air raid shelters and the like buildings
BE515909A (en) * 1952-11-29 1952-12-15 Perfecta BOTTLE RACK
BE524457A (en) * 1953-04-10
SE358690B (en) * 1960-05-05 1973-08-06 Nitro Nobel Ab

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306884A (en) * 1995-11-08 1997-05-14 John Humphries Parkes Suppressing explosions
GB2306884B (en) * 1995-11-08 1999-06-30 John Humphries Parkes Improvements in and relating to suppressing explosions

Also Published As

Publication number Publication date
US3397756A (en) 1968-08-20
DE1571276A1 (en) 1970-10-15

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