PL84776B1 - - Google Patents

Download PDF

Info

Publication number
PL84776B1
PL84776B1 PL1973161413A PL16141373A PL84776B1 PL 84776 B1 PL84776 B1 PL 84776B1 PL 1973161413 A PL1973161413 A PL 1973161413A PL 16141373 A PL16141373 A PL 16141373A PL 84776 B1 PL84776 B1 PL 84776B1
Authority
PL
Poland
Prior art keywords
housing according
canopy
shields
casing
housing
Prior art date
Application number
PL1973161413A
Other languages
English (en)
Polish (pl)
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 filed Critical
Publication of PL84776B1 publication Critical patent/PL84776B1/pl

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
    • E21D23/0017—Pile type supports
    • E21D23/003—Pile type supports consisting of a rigid pile
    • 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)
  • Excavating Of Shafts Or Tunnels (AREA)
PL1973161413A 1972-03-24 1973-03-22 PL84776B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1397272A GB1387311A (en) 1972-03-24 1972-03-24 Mine roof supports

Publications (1)

Publication Number Publication Date
PL84776B1 true PL84776B1 (ja) 1976-04-30

Family

ID=10032710

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1973161413A PL84776B1 (ja) 1972-03-24 1973-03-22

Country Status (4)

Country Link
US (1) US3848420A (ja)
AU (1) AU466853B2 (ja)
GB (1) GB1387311A (ja)
PL (1) PL84776B1 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1494284A (en) * 1975-07-19 1977-12-07 Gullick Dobson Ltd Self-advancing mine roof supports
DE2646563C3 (de) * 1976-10-15 1979-08-09 Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum Ausbau für den Saumbereich eines Strebs
JPS5416303A (en) * 1977-07-07 1979-02-06 Taiheiyo Eng Apparatus for controlling floated dust powder and like in long wall type coal mining face
DE3643120A1 (de) * 1986-01-22 1987-07-30 Voest Alpine Ag Ortsbeweglicher abstuetzbock
US5019651A (en) * 1990-06-20 1991-05-28 Merck & Co., Inc. Process for preparing 4-amino-1-hydroxybutylidene-1,1-bisphosphonic acid (ABP) or salts thereof
EP0795680B1 (en) * 1996-03-11 2003-09-03 Council of Scientific and Industrial Research Shortwall mining equipment for extraction of pillars in underground coal mines
RU2544345C2 (ru) * 2009-07-10 2015-03-20 Джой ММ Делавэр, Инк. Кровельные опоры для сплошной выемки
CN102536288A (zh) * 2012-01-10 2012-07-04 中煤北京煤矿机械有限责任公司 绿色环保高水充填支架

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1124665A (en) * 1966-04-29 1968-08-21 Gullick Ltd Improvements in or relating to mine roof supports
GB1216322A (en) * 1967-04-21 1970-12-16 Dobson Ltd W E & F Improvements in or relating to mine roof supports
GB1206283A (en) * 1967-07-28 1970-09-23 Herbert Cotterill Ltd Improvements in or relating to mine roof supports
US3570255A (en) * 1968-06-10 1971-03-16 Mastabar Mining Equipment Co L Mine roof support
DE6902441U (de) * 1969-01-23 1969-05-22 Kloeckner Werke Ag Dreirahmengespann fuer den schreitenden strebausbau mit einer an seinen versatzseitigen stempeln angebrachten versatzabkleidung
DE2027299A1 (de) * 1970-06-03 1971-12-09 Klöckner-Werke ,4100 Duisburg Kappenzug für Ausbaurahmen des wandernden Strebausbaus

Also Published As

Publication number Publication date
GB1387311A (en) 1975-03-12
AU5345773A (en) 1974-09-19
AU466853B2 (en) 1975-11-13
US3848420A (en) 1974-11-19

Similar Documents

Publication Publication Date Title
PL84776B1 (ja)
US3314722A (en) Mining machine with rotary cutter horizontally slidable on vertically adjustable guide
SU693027A1 (ru) Фронтальный агрегат
US4029361A (en) Longwall mining roof support for double deck machines
GB1599117A (en) Support systems for mineral mining installations
US4200338A (en) Mineral mining installation
US3902324A (en) Mobile roof supporting shield
US4101173A (en) Roof prop and platform movably mounted on boom of tunnelling machine
PL125823B1 (en) Mining apparatus for mining minerals
US3911686A (en) Mineral mining installations
US3827754A (en) Low profile coal mining apparatus
US3474627A (en) Roof supports for mine workings
US4747729A (en) Movable trestle
US3925995A (en) Roof support frames for mining
US3813886A (en) Travelling shoring apparatus
US3851480A (en) Mine roof support assemblies
SU948295A3 (ru) Добычна установка дл отработки мощных крутых пластов
PL117943B1 (en) Travel area protection shield of automatically adjustable height,being mounted on a walking roof supportvlivaemojj vysotojj,pomehhennoe na shagajuhhejj krepi
US3872677A (en) Mineral mining installations
PL81261B1 (ja)
US3344610A (en) Self-traveling propping apparatus
PL93301B1 (ja)
SU1239356A1 (ru) Выемочный агрегат дл крутых пластов
US2711891A (en) Adjustable height continuous mining machine with adjustment equalizer
FI90906B (fi) Liikkuva louhoksentuentalaite