FR2520799A1 - Soutenement de toit de mines - Google Patents

Soutenement de toit de mines Download PDF

Info

Publication number
FR2520799A1
FR2520799A1 FR8301442A FR8301442A FR2520799A1 FR 2520799 A1 FR2520799 A1 FR 2520799A1 FR 8301442 A FR8301442 A FR 8301442A FR 8301442 A FR8301442 A FR 8301442A FR 2520799 A1 FR2520799 A1 FR 2520799A1
Authority
FR
France
Prior art keywords
support
support according
roof
intended
come
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.)
Withdrawn
Application number
FR8301442A
Other languages
English (en)
French (fr)
Inventor
John Cooke
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.)
Joy Global Industries Ltd
Original Assignee
Dobson Park Industries 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 Dobson Park Industries Ltd filed Critical Dobson Park Industries Ltd
Publication of FR2520799A1 publication Critical patent/FR2520799A1/fr
Withdrawn legal-status Critical Current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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E21D23/066—Pivoted cantilever extensions therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Chain Conveyers (AREA)
  • Agricultural Machines (AREA)
FR8301442A 1982-02-02 1983-01-31 Soutenement de toit de mines Withdrawn FR2520799A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8202977 1982-02-02

Publications (1)

Publication Number Publication Date
FR2520799A1 true FR2520799A1 (fr) 1983-08-05

Family

ID=10528066

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8301442A Withdrawn FR2520799A1 (fr) 1982-02-02 1983-01-31 Soutenement de toit de mines

Country Status (2)

Country Link
DE (1) DE3303264A1 (de)
FR (1) FR2520799A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT388212B (de) * 1986-07-02 1989-05-26 Voest Alpine Ag Verfahrbarer ausbaubock fuer die bruchkantensicherung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2819172C2 (de) * 1978-05-02 1985-01-24 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Vorpfändeinrichtung für hydraulischen Schreitausbau

Also Published As

Publication number Publication date
DE3303264C2 (de) 1987-11-05
DE3303264A1 (de) 1984-04-19

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Legal Events

Date Code Title Description
ST Notification of lapse