GB988763A - Stemming - Google Patents

Stemming

Info

Publication number
GB988763A
GB988763A GB987663A GB987663A GB988763A GB 988763 A GB988763 A GB 988763A GB 987663 A GB987663 A GB 987663A GB 987663 A GB987663 A GB 987663A GB 988763 A GB988763 A GB 988763A
Authority
GB
United Kingdom
Prior art keywords
sand
sodium silicate
plugs
march
tamping
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
GB987663A
Inventor
Bryan Thomas Oulsnam
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.)
Coreplugs Ltd
Original Assignee
Coreplugs 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 Coreplugs Ltd filed Critical Coreplugs Ltd
Priority to GB987663A priority Critical patent/GB988763A/en
Publication of GB988763A publication Critical patent/GB988763A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F42D1/24—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor characterised by the tamping material

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

988,763. Tamping plugs. COREPLUGS Ltd. March 13, 1964 [March 13, 1963], No. 9876/63. Heading F3A. Tamping plugs 10 comprising sand bonded with sodium silicate are formed in a mould. The resultant cylinders are then heated in a kiln to a temperature of about 250‹ C., so that the outer layer of each plug becomes hardened. The mixture used to form the plugs may contain besides the sand the following parts by weight: 3-5% sodium silicate, 5-6% powdered marl, and about 4% water. In a second embodiment 1.5-5% soluble sodium silicate is mixed with sand and moulded to form a tapered cylinder, which is subsequently treated with CO 2 to react with the sodium silicate and bond the sand. A blind hole 11 may be formed in the plug. Granular ceramic material may replace part of the sand. The plugs disintegrate, when forced into a borehole.
GB987663A 1963-03-13 1963-03-13 Stemming Expired GB988763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB987663A GB988763A (en) 1963-03-13 1963-03-13 Stemming

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB987663A GB988763A (en) 1963-03-13 1963-03-13 Stemming

Publications (1)

Publication Number Publication Date
GB988763A true GB988763A (en) 1965-04-14

Family

ID=9880430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB987663A Expired GB988763A (en) 1963-03-13 1963-03-13 Stemming

Country Status (1)

Country Link
GB (1) GB988763A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214532A (en) * 1977-05-07 1980-07-29 Coreplugs Limited Stemming
CN108952212A (en) * 2018-07-04 2018-12-07 中国人民解放军陆军工程大学 Device for removing cylindrical steel column without punching blasting and blasting method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214532A (en) * 1977-05-07 1980-07-29 Coreplugs Limited Stemming
CN108952212A (en) * 2018-07-04 2018-12-07 中国人民解放军陆军工程大学 Device for removing cylindrical steel column without punching blasting and blasting method

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