ES362787A1 - Dispositivo de avance hidraulico para unidades de entiba- cion. - Google Patents

Dispositivo de avance hidraulico para unidades de entiba- cion.

Info

Publication number
ES362787A1
ES362787A1 ES362787A ES362787A ES362787A1 ES 362787 A1 ES362787 A1 ES 362787A1 ES 362787 A ES362787 A ES 362787A ES 362787 A ES362787 A ES 362787A ES 362787 A1 ES362787 A1 ES 362787A1
Authority
ES
Spain
Prior art keywords
block
mines
hydraulically
relating
supports
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
ES362787A
Other languages
English (en)
Spanish (es)
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.)
FIMA HERMANN HEMSCHEIDT MASCHI
Original Assignee
FIMA HERMANN HEMSCHEIDT MASCHI
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
Priority claimed from DE19681583800 external-priority patent/DE1583800A1/de
Application filed by FIMA HERMANN HEMSCHEIDT MASCHI filed Critical FIMA HERMANN HEMSCHEIDT MASCHI
Publication of ES362787A1 publication Critical patent/ES362787A1/es
Expired legal-status Critical Current

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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0078—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with individual shifting devices

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)
  • Support Of The Bearing (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
ES362787A 1968-02-29 1969-01-21 Dispositivo de avance hidraulico para unidades de entiba- cion. Expired ES362787A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681583800 DE1583800A1 (de) 1968-02-29 1968-02-29 Rueckvorrichtung fuer hydraulische Ausbaueinheiten

Publications (1)

Publication Number Publication Date
ES362787A1 true ES362787A1 (es) 1970-11-16

Family

ID=5679560

Family Applications (1)

Application Number Title Priority Date Filing Date
ES362787A Expired ES362787A1 (es) 1968-02-29 1969-01-21 Dispositivo de avance hidraulico para unidades de entiba- cion.

Country Status (4)

Country Link
BE (1) BE725517A (tr)
ES (1) ES362787A1 (tr)
FR (1) FR1597857A (tr)
GB (1) GB1248967A (tr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112597677B (zh) * 2020-12-11 2022-12-27 重庆大学 一种判断煤矿掘进工作面最大控顶距的方法

Also Published As

Publication number Publication date
FR1597857A (tr) 1970-06-29
BE725517A (tr) 1969-05-29
GB1248967A (en) 1971-10-06

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