ZA74423B - Improvements in or relating to a mine roof support - Google Patents

Improvements in or relating to a mine roof support

Info

Publication number
ZA74423B
ZA74423B ZA740423A ZA74423A ZA74423B ZA 74423 B ZA74423 B ZA 74423B ZA 740423 A ZA740423 A ZA 740423A ZA 74423 A ZA74423 A ZA 74423A ZA 74423 B ZA74423 B ZA 74423B
Authority
ZA
South Africa
Prior art keywords
relating
roof support
mine roof
mine
support
Prior art date
Application number
ZA740423A
Inventor
W Lubojatsky
W Wertelewski
Original Assignee
Becorit Grubenausbau Gmbh
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 Becorit Grubenausbau Gmbh filed Critical Becorit Grubenausbau Gmbh
Publication of ZA74423B publication Critical patent/ZA74423B/en

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
    • E21D23/0034—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 comprising a goaf shield articulated to a base member
    • E21D23/0043—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 comprising a goaf shield articulated to a base member and supported by two or more rows of struts parallel to the working face
    • 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
    • E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support

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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Error Detection And Correction (AREA)
  • Tents Or Canopies (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
ZA740423A 1973-02-27 1974-01-21 Improvements in or relating to a mine roof support ZA74423B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2309670A DE2309670C2 (en) 1973-02-27 1973-02-27 Support frame with offset shielding for longwall mining in underground mining operations

Publications (1)

Publication Number Publication Date
ZA74423B true ZA74423B (en) 1974-11-27

Family

ID=5873203

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA740423A ZA74423B (en) 1973-02-27 1974-01-21 Improvements in or relating to a mine roof support

Country Status (7)

Country Link
US (1) US3908389A (en)
JP (1) JPS547487B2 (en)
CS (1) CS202030B2 (en)
DE (1) DE2309670C2 (en)
GB (1) GB1418432A (en)
PL (1) PL90941B1 (en)
ZA (1) ZA74423B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1516637A (en) * 1974-11-23 1978-07-05 Gullick Dobson Ltd Mine roof supports
DE2850073A1 (en) * 1978-11-18 1980-05-29 Fletcher Sutcliffe Wild Ltd Roof support for longwall mining - has permanently loaded force applicator acting on roof beams and restoring displaced chock legs after predetermined pressure drop
GB2136040B (en) * 1983-03-08 1986-06-11 Dobson Park Ind Pivotal linkage of a mine roof support
CN104213929A (en) * 2014-08-21 2014-12-17 四川省华蓥山煤业股份有限公司李子垭南煤矿 Large-inclination-angle coal bed fully-mechanized mining bracket and support method
CN105065046B (en) * 2015-07-13 2017-07-18 辽宁工程技术大学 Flexible protective device between a kind of adjacent frame of hydraulic support
CN106761870A (en) * 2016-11-19 2017-05-31 无锡市洗选设备厂 Sand washer bracket component
CN106499425A (en) * 2016-11-19 2017-03-15 无锡市洗选设备厂 The hydraulic prop component of sand washer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1036663A (en) * 1964-04-03 1966-07-20 Gullick Ltd Improvements in or relating to mine roof and like supports
GB1124665A (en) * 1966-04-29 1968-08-21 Gullick Ltd Improvements in or relating to mine roof supports
BE789390A (en) * 1971-10-02 1973-01-15 Gewerk Eisenhuette Westfalia SHIELD SUPPORT FRAMES

Also Published As

Publication number Publication date
GB1418432A (en) 1975-12-17
CS202030B2 (en) 1980-12-31
JPS49117302A (en) 1974-11-09
US3908389A (en) 1975-09-30
JPS547487B2 (en) 1979-04-07
DE2309670B1 (en) 1974-02-14
PL90941B1 (en) 1977-02-28
DE2309670A1 (en) 1974-02-14
DE2309670C2 (en) 1974-09-05

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