ZA721773B - Improvements in or relating to self propelled mine roof supports - Google Patents

Improvements in or relating to self propelled mine roof supports

Info

Publication number
ZA721773B
ZA721773B ZA721773A ZA721773A ZA721773B ZA 721773 B ZA721773 B ZA 721773B ZA 721773 A ZA721773 A ZA 721773A ZA 721773 A ZA721773 A ZA 721773A ZA 721773 B ZA721773 B ZA 721773B
Authority
ZA
South Africa
Prior art keywords
relating
mine roof
roof supports
self propelled
propelled mine
Prior art date
Application number
ZA721773A
Other languages
English (en)
Inventor
A Allen
Original Assignee
Gullick Dobson 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 Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Publication of ZA721773B publication Critical patent/ZA721773B/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
ZA721773A 1971-03-16 1972-03-15 Improvements in or relating to self propelled mine roof supports ZA721773B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB717671A GB1375562A (xx) 1971-03-16 1971-03-16

Publications (1)

Publication Number Publication Date
ZA721773B true ZA721773B (en) 1972-12-27

Family

ID=9828069

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA721773A ZA721773B (en) 1971-03-16 1972-03-15 Improvements in or relating to self propelled mine roof supports

Country Status (4)

Country Link
CA (1) CA946633A (xx)
DE (1) DE2211605C3 (xx)
GB (1) GB1375562A (xx)
ZA (1) ZA721773B (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL115687B1 (en) * 1978-03-24 1981-04-30 Centralny Osrodek Projektowo Konstrukcyjny Maszyn Gorn Gangway walking roof support
US4143991A (en) * 1978-05-24 1979-03-13 Frank Stafford Mine roof support system
DE2901054A1 (de) * 1979-01-12 1980-07-17 Salzgitter Maschinen Ag Vorlaeufiger streckenausbau fuer durchbaubetriebe in strecken des untertaegigen bergbaus
CN110424996B (zh) * 2019-08-13 2020-09-04 天地科技股份有限公司 一种无反复支撑自移式超前支护装置
CN111608705A (zh) * 2020-06-01 2020-09-01 安徽理工大学 一种综掘工作面迈步式锚支护机器人

Also Published As

Publication number Publication date
GB1375562A (xx) 1974-11-27
DE2211605C3 (de) 1974-06-20
DE2211605A1 (de) 1972-09-28
DE2211605B2 (de) 1973-11-29
CA946633A (en) 1974-05-07

Similar Documents

Publication Publication Date Title
ZA72149B (en) Improvements in or relating to tunnelling
ZA731854B (en) Improvements in or relating to mine roof supports
AU466853B2 (en) Improvements in or relating to mine roof support
ZA721773B (en) Improvements in or relating to self propelled mine roof supports
SG8179G (en) Improvements in or relating to thienobenzazepines
ZA754137B (en) Improvements in or relating to selfadvancing mine roof supports
AU463909B2 (en) Improvements in or relating to mine roof supports
ZA757015B (en) Improvements in or relating to selfadvancing mine roof supports
ZA74423B (en) Improvements in or relating to a mine roof support
AU464062B2 (en) Improvements in or relating to mine roof support systems
AU1304770A (en) Improvements in or relating to mine roof supports
ZA761010B (en) Improvements in or relating to mine roof supports
ZA716473B (en) Improvements in or relating to mine roof supports
AU4459672A (en) Improvements in or relating to mine roof supports
AU450824B2 (en) Improvements in or relating to mine roof supports
AU3045871A (en) Improvements in or relating to mine roof supports
AU487333B2 (en) Improvements in or relating to mine roof supports
AU4731472A (en) Improvements in or relating to mine roof support assemblies
ZA705100B (en) Improvements in or relating to roof covering
AU5782673A (en) Improvements in or relating to mine roof supports
AU449631B2 (en) Improvements in or relating to mine roof supports
AU484497B2 (en) Improvements in or relating to mine roof chocks
ZM15473A1 (en) Improvements in or relating to mine brattices
AU6289569A (en) Improvements in or relating to mine roof supports
AU4673668A (en) Improvements in or relating to mine roof supports