FR2292853B1 - - Google Patents

Info

Publication number
FR2292853B1
FR2292853B1 FR7439961A FR7439961A FR2292853B1 FR 2292853 B1 FR2292853 B1 FR 2292853B1 FR 7439961 A FR7439961 A FR 7439961A FR 7439961 A FR7439961 A FR 7439961A FR 2292853 B1 FR2292853 B1 FR 2292853B1
Authority
FR
France
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
FR7439961A
Other languages
French (fr)
Other versions
FR2292853A1 (fr
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.)
Bennes Marrel SA
Original Assignee
Bennes Marrel SA
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 Bennes Marrel SA filed Critical Bennes Marrel SA
Priority to FR7439961A priority Critical patent/FR2292853A1/fr
Publication of FR2292853A1 publication Critical patent/FR2292853A1/fr
Application granted granted Critical
Publication of FR2292853B1 publication Critical patent/FR2292853B1/fr
Granted 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
    • 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
    • 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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
FR7439961A 1974-11-26 1974-11-26 Dispositif pour la protection d'un soutenement marchant contre les eboulis du foudroyage dans une mine Granted FR2292853A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7439961A FR2292853A1 (fr) 1974-11-26 1974-11-26 Dispositif pour la protection d'un soutenement marchant contre les eboulis du foudroyage dans une mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7439961A FR2292853A1 (fr) 1974-11-26 1974-11-26 Dispositif pour la protection d'un soutenement marchant contre les eboulis du foudroyage dans une mine

Publications (2)

Publication Number Publication Date
FR2292853A1 FR2292853A1 (fr) 1976-06-25
FR2292853B1 true FR2292853B1 (de) 1977-03-25

Family

ID=9145642

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7439961A Granted FR2292853A1 (fr) 1974-11-26 1974-11-26 Dispositif pour la protection d'un soutenement marchant contre les eboulis du foudroyage dans une mine

Country Status (1)

Country Link
FR (1) FR2292853A1 (de)

Also Published As

Publication number Publication date
FR2292853A1 (fr) 1976-06-25

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Legal Events

Date Code Title Description
ST Notification of lapse