DE1281978B - Procedure for securing large areas of the hanging slope area exposed in the course of the cutting progress in mining operations - Google Patents

Procedure for securing large areas of the hanging slope area exposed in the course of the cutting progress in mining operations

Info

Publication number
DE1281978B
DE1281978B DEG43397A DEG0043397A DE1281978B DE 1281978 B DE1281978 B DE 1281978B DE G43397 A DEG43397 A DE G43397A DE G0043397 A DEG0043397 A DE G0043397A DE 1281978 B DE1281978 B DE 1281978B
Authority
DE
Germany
Prior art keywords
mat
hanging wall
exposed
hanging
roll
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.)
Pending
Application number
DEG43397A
Other languages
German (de)
Inventor
Dipl-Ing Karl Maria Groetschel
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.)
KARL MARIA GROETSCHEL DIPL ING
Original Assignee
KARL MARIA GROETSCHEL DIPL ING
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 KARL MARIA GROETSCHEL DIPL ING filed Critical KARL MARIA GROETSCHEL DIPL ING
Priority to DEG43397A priority Critical patent/DE1281978B/en
Priority to AT134568A priority patent/AT275449B/en
Priority to AT353366A priority patent/AT269780B/en
Priority to FR58286A priority patent/FR1514945A/en
Priority to GB1740566A priority patent/GB1168792A/en
Priority to GB5396266A priority patent/GB1168793A/en
Priority to US54414566 priority patent/US3399927A/en
Priority to GB5396666A priority patent/GB1168794A/en
Priority to US3466875D priority patent/US3466875A/en
Publication of DE1281978B publication Critical patent/DE1281978B/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/0206—Hydraulically operated extension devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D19/00—Provisional protective covers for working space
    • E21D19/02—Provisional protective covers for working space for use in longwall working
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/0481—Supports specially adapted for use in combination with the placing of filling-up materials
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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 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
    • E21D23/063—Retractable cantilever extensions therefor

Description

Verfahren zur großflächigen Sicherung des im Zuge des Verhiebsfortschrittes freigelegten Hangendbereichs in Abbaubetrieben Die Erfindung betrifft ein Verfahren zur großflächigen Sicherung des im Zuge des Verhiebsfortschrittes freigelegten Hangendbereichs in Abbaubetrieben mit insbesondere mechanisch wanderndem Ausbau und mit mechanischer Gewinnung durch Verkleidung des freigelegten Bereichs mit einer nach Vorrücken des Ausbaus von diesem abgestützten Abdeckung.Procedure for securing large areas in the course of the cutting progress exposed hanging slope area in mining operations The invention relates to a method for securing large areas of the hanging wall area exposed in the course of the cutting progress in mining operations with, in particular, mechanically migratory expansion and with mechanical Extraction by lining the exposed area with one after the advancement of the Expansion of this supported cover.

Es ist bereits vorgeschlagen worden, das beim Fortschreiten des Verhiebs freigelegte Hangende großflächig durch Aufbringen einer gegebenenfalls mit einer Armierung versehenen Betonschicht abzusichern. Eine anzustrebende sichere Sofortabstützung eines zum Abbröckeln neigenden Hangenden läßt sich aber auf diese Weise nicht oder nur mit Schwierigkeiten erreichen, da bis zum ausreichenden Abbinden des Betons ein längerer, nicht immer vorherbestimmbarer Zeitraum benötigt wird, während dem das Hangende nicht gesichert ist. Würde man unmittelbar nach dem Aufspritzen des Betons die Ausbaueinheiten vorrücken, wie dies an sich wünschenswert ist, so würde die Gefahr bestehen, daß die noch nicht abgebundene Betonschicht durch den auf sie wirkenden Setzdruck beschädigt wird. Ein weiterer Nachteil einer solchen Hangendsicherung ist darin zu sehen, daß beim Aufspritzen des Betons Material vom Hangenden gelöst werden kann, und daß Teile des aufgespritzten Betons auf den Kohlenstoß, das Fördermittel und die Ausbaueinheiten gelangen können.It has already been suggested that as the mulching progresses exposed hanging wall over a large area by applying a, if necessary with a To secure reinforced concrete layer. A secure immediate support to be striven for but a hanging wall that tends to crumble cannot or can only be achieved with difficulty, as until the concrete has sufficiently set a longer, not always predictable period is required during which the hanging wall is not secured. If you would immediately after spraying the Concrete advance the expansion units, as is desirable in itself, so would there is a risk that the not yet set concrete layer through the on it acting setting pressure is damaged. Another disadvantage of such a slope protection system can be seen in the fact that material is detached from the hanging wall when the concrete is sprayed on can be, and that parts of the sprayed concrete on the coal face, the conveyor and the expansion units can get there.

Eine ferner zum Schutz von Tunnel- und Schachtwänden gegen Sickerwasser entwickelte Abdeckung, bei der durch Schweißung verbundene Kunststofffolien mittels Rahmenelementen oder Schwarten an den Wänden befestigt werden, ist für den hier in Frage stehenden Zweck einer Sofortabdeckung von beim Durchgang einer Gewinnungsmaschine freigelegtem Hangenden völlig ungeeignet.Another to protect tunnel and shaft walls against seepage water developed cover, in which plastic foils connected by welding by means of Frame elements or slabs attached to the walls is for that here the purpose in question of an immediate coverage of the passage of a mining machine exposed hanging walls completely unsuitable.

In völliger Abweichung von bisher bekannten Verfahren und zur sofortigen Sicherung von freigelegtem Hangenden wird erfindungsgemäß vorgeschlagen, daß in jedem neuen Abbaufeld fortlaufend, der Gewinnungsmaschine unmittelbar folgend, eine Matte von dem freigelegten Hangendbereich entsprechender Breite unter gleichzeitiger Straffung derselben an das Hangende angelegt und unmittelbar nach Passieren jeder Ausbaueinheit durch den dann gerückten Ausbau oder vorgepfändete Teile desselben an das Hangende angepreßt wird.In complete deviation from previously known procedures and immediately Securing exposed hanging walls is proposed according to the invention that in for each new mining field continuously, immediately following the extraction machine, one Mat from the exposed hanging wall area of the corresponding width with simultaneous Tightening the same applied to the hanging wall and immediately after passing each one Expansion unit by the then moved expansion or pre-seized parts of the same is pressed against the hanging wall.

Vorzugsweise wird die Matte von einem auf der Gewinnungsmaschine geführten Vorrat aus zugeführt. Ferner können in weiterer Ausgestaltung der Erfindung eine Mehrzahl von aus besonderen Vorratsbehältern zugeführten Lagen zu einer Matte vereinigt werden, wobei gegebenenfalls zwischen einzelne Matten Futterstoffe eingebracht werden. Unter die Mattenbahnen können parallel zum Abbaustoß verlaufende Verstärkungsseile od. dgl. gezogen werden.The mat is preferably guided by one on the extraction machine Stock fed out. Furthermore, in a further embodiment of the invention, a A plurality of layers fed in from special storage containers are combined to form a mat , with lining materials being introduced between individual mats if necessary. Reinforcement ropes running parallel to the excavation joint can be placed under the mat strips or the like. Be drawn.

Die Matten, die aus engen oder weitmaschigen Netzen aus Geflecht, Gewebe od. dgl. bestehen können, können einem vorzugsweise rollenförmigen Mattenvorrat, der mit der Gewinnungsmaschine eine bauliche Einheit bildet, entnommen und mittels einer vorzugsweise als Rolle ausgebildeten und zum Straffen der Matte mit einer Bremsvorrichtung versehenen Einrichtung, die ebenfalls an der Gewinnungsmaschine angeordnet ist, an das Hangende angelegt werden.The mats, which are made of tight or wide-meshed nets of wicker, Fabric or the like can consist of a preferably roll-shaped mat supply, which forms a structural unit with the extraction machine, removed and by means of one preferably designed as a role and for tightening the mat with a Braking device provided device, which is also on the mining machine is arranged to be applied to the hanging wall.

Eine aus Gliedern zusammengesetzte Matte wird zweckmäßig aus einem kastenförmigen Behälter entnommen und mittels einer abgefederten Mehrkantrolle an das Hangende angelegt.A mat composed of limbs is expediently made of one The box-shaped container is removed and attached by means of a spring-loaded polygonal roller the hanging wall laid out.

Die Anlegerolle kann auch gleichzeitig Vorratsrolle sein.The feed roll can also be a supply roll at the same time.

Im folgenden Teil der Beschreibung wird das neue Verfahren und eine zu seiner Ausführung geeignete Vorrichtung an Hand der Zeichnungen näher erläutert. In den Zeichnungen ist F i g. 1 eine in Strebrichtung gesehene Ansicht einer sich auf dem Fördermittel vor einer Front von Ausbauaggregaten entlangbewegenden Mattenlegevorrichtung, die mit der Gewinnungsmaschine verbunden ist; F i g. 2 eine Draufsicht auf die in F i g. 1 gezeigte Anordnung und F i g. 3 eine in Versatzrichtung gesehene Ansicht der in F i g. 1 und 2 gezeigten Vorrichtung.The following part of the description describes the new method and a suitable device for its execution explained in more detail with reference to the drawings. In the drawings, F i g. 1 is a view of a self, seen in the direction of the strut mat laying device moving along the conveyor in front of a front of expansion units, which is connected to the mining machine; F i g. 2 is a plan view of the in F i g. 1 shown arrangement and F i g. 3 one in the offset direction The view seen in FIG. 1 and 2 shown device.

In den Figuren ist die sich zusammen mit der nur teilweise gezeigten Gewinnungsmaschine entlang dem Förderer in Richtung des Pfeils X (F i g. 3) bewegende Mattenverlegungsvorrichtung mit A und die die gelegte Matte unterfangenden Vorpfändelemente der Ausbauaggregate mit B bezeichnet.In the figures, the is shown together with the only partially shown Extraction machine moving along the conveyor in the direction of arrow X (Fig. 3) Mat laying device with A and the pre-pledging elements underpinning the mat the expansion units are designated with B.

Die im dargestellten Fall netzartig ausgebildete und in einzelnen Bahnen verlegte Matte 1 wird von einer Rolle 2 abgespult, die auf einer Achse 3 gelagert ist, welche von Kragarmen 4 einer Halterung 7 abgestützt ist. Die Halterung 7 ist mit der sich auf dem Förderer 5 bewegenden Gewinnungsmaschine 6 verbunden und ragt in das von der Maschine freigelegte Feld E hinein. Die Mattenverlegungsvorrichtung A weist ferner eine Anlegerolle 8 auf, die über einen Haltebügel 9 mittels eines rechteckigen Vertikalzapfens 10 in einem seitlichen Mitnehmerarm 11 der Halterungsvorrichtung 7 höhenverschieblich gelagert ist und mittels einer Feder 12 gegen das Hangende gedrückt wird.The mat 1, which is formed like a network in the illustrated case and laid in individual tracks, is unwound from a roll 2 which is mounted on an axle 3 which is supported by cantilever arms 4 of a holder 7. The holder 7 is connected to the mining machine 6 moving on the conveyor 5 and protrudes into the field E exposed by the machine. The mat laying device A also has a feed roller 8 , which is mounted vertically displaceably via a bracket 9 by means of a rectangular vertical pin 10 in a lateral driver arm 11 of the mounting device 7 and is pressed against the hanging wall by means of a spring 12.

Es ist ohne weiteres verständlich, daß die Matte, da sie einerseits von den Vorpfändelementen B am Hangenden festgeklemmt ist und andererseits mit ihrem von der Anlegerrolle 8 noch nicht erfaßten Teil von der Gewinnungsmaschine 6 in Richtung des Pfeils X vorwärts getragen wird, fortlaufend von der Vorratsrolle 2 abgespult und durch die Anlegerolle 8 angelegt wird, wobei sie mittels in der Zeichnung nicht dargestellter Bremsorgane gestrafft wird.It is readily understandable that the mat, as it is on the one hand is clamped by the pre-pledging elements B on the hanging wall and on the other hand with her by the feeder roller 8 not yet covered part of the extraction machine 6 in Is carried forward in the direction of the arrow X, continuously from the supply roll 2 is unwound and applied by the feed roller 8, by means of in the drawing Not shown braking members is tightened.

Wie aus F i g. 2 zu entnehmen ist, sind die Matten hier mit geringem Abstand voneinander angeordnet. Sie können aber auch überlappend verlegt oder nach dem Verlegen miteinander verbunden werden. An Stelle einer Vorratsrolle kann auch ein kastenförmiger Behälter verwendet werden, dem die Matten fortlaufend entnommen werden.As shown in FIG. 2 can be seen, the mats are here with low Arranged at a distance from each other. But they can also be laid overlapping or after be connected to each other after laying. Instead of a supply roll can also a box-shaped container can be used from which the mats are continuously removed will.

Unmittelbar nachdem die Matte in dem vor einer Ausbaueinheit D befindlichen Teil des von der Gewinnungsmaschine freigelegten Felds E an das Hangende angelegt ist, wird das Vorpfändelement B der Einheit D vorgepfändet. Die Einheit D ist in dem gezeigten Ausführungsbeispiel eine in einem Schritt vorrückbare Einheit, deren Oberbau zwei mit Abstand voneinander angeordnete Holme 20 aufweist, von denen jeder hinten auf einer hydraulischen Stütze 21 und vorne über ein Joch 22 auf dem äußeren Stempel 23 einer Mittelstütze 24 abgestützt ist. Das zwischen den beiden Holmen 20 angeordnete Vorpfändelement oder Träger B ruht gleitbar auf einem auf das obere Ende des inneren Stempels 25 der Mittelstütze 24 aufgesetzten Lagerkörper 26. Das Vorpfändelement B ist in seiner durch hydraulische Zylinderkolbenvorrichtungen 27 vorgepfändeten, die Matte l unterfangenden Stellung gezeigt, in der sein vorderes Ende nahe dem Kohlenstoß F liegt.Immediately after the mat is placed on the hanging wall in the part of the field E exposed by the mining machine, which is located in front of an expansion unit D, the pre-pledging element B of the unit D is pre-seized. In the exemplary embodiment shown, the unit D is a unit that can be advanced in one step, the superstructure of which has two spars 20 arranged at a distance from one another, each of which is supported at the rear on a hydraulic support 21 and at the front via a yoke 22 on the outer punch 23 of a central support 24 is. The arranged between the two rails 20 Vorpfändelement or carrier B rests slidably on a top to the end of the inner punch 25 of the center post 24 attached bearing body 26. The Vorpfändelement B is vorgepfändeten in its by hydraulic cylinder-piston devices 27, the mat showed l under catching position in the front end of which is close to the coal face F.

Claims (7)

Patentansprüche: 1. Verfahren zur großflächigen Sicherung des im Zuge des Verhiebsfortschrittes freigelegten Hangendbereichs in Abbaubetrieben mit insbesondere mechanisch wanderndem Ausbau und mit mechanischer Gewinnung durch Verkleidung des freigelegten Bereichs mit einer nach Vorrücken des Ausbaus von diesem abgestützten Abdeckung, dadurch gekennzeichnet, daß in jedem neuen Abbaufeld fortlaufend, der Gewinnungsmaschine unmittelbar folgend, eine Matte von dem freigelegten Hangendbereich entsprechender Breite unter gleichzeitiger Straffung derselben an das Hangende angelegt und unmittelbar nach Passieren jeder Ausbaueinheit durch den dann gerückten Ausbau oder vorgepfändete Teile desselben an das Hangende angepreßt wird. Claims: 1. Method for securing large areas in the train of the excavation progress exposed hanging slope area in mining operations with in particular mechanically migratory expansion and with mechanical extraction by cladding the exposed area with a supported by this after the advancement of the expansion Cover, characterized in that continuously in each new mining field, the Immediately following the extraction machine, a mat from the exposed hanging wall area corresponding width with simultaneous tightening of the same applied to the hanging wall and immediately after passing each extension unit through the extension that is then moved or pre-seized parts of the same is pressed against the hanging wall. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Matte von einem von der Gewinnungsmaschine geführten Vorrat aus zugeführt wird. 2. Procedure according to claim 1, characterized in that the mat from one of the extraction machine guided stock is supplied from. 3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß eine Mehrzahl von aus besonderen Vorratsbehältern zugeführten Lagen zu einer Matte vereinigt werden. 3. The method according to claim 1 and 2, characterized characterized in that a plurality of supplied from special storage containers Layers can be combined to form a mat. 4. Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß unter die Mattenbahnen parallel zum Abbaustoß verlaufende Verstärkungsseile od. dgl. gezogen werden. 4. The method according to claim 1 to 3, characterized characterized in that reinforcing ropes running parallel to the working face under the mat webs or the like. Be drawn. 5. Verfahren nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die jeweils neu verlegten Mattenbahnen mit der in dem vorhergehenden Feld verlegten Mattenbahnen verbunden werden. 5. The method according to claim 1 to 4, characterized in that that the newly laid mats were laid with the one in the previous field Mat sheets are connected. 6. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß an der Gewinnungsmaschine eine die Matte (1) an das Hangende anlegende als Einzelrolle oder als aus mehreren Teilrollen zusammengesetzte Rolle ausgebildete und zum Straffen der Matte mit einer Bremsvorrichtung versehene Einrichtung (8) angebracht ist. 6. Apparatus for carrying out the method according to claim 1 to 5, characterized in that on the extraction machine a mat (1) applied to the hanging wall as a single roll or as a roll composed of several partial rolls and provided with a braking device for tightening the mat (8) is attached. 7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die die Matte an das Hangende anlegende Rolle die Vorratsrolle ist. B. Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Mattenverlegungsvorrichtung (A) von einer Stellung über dem Förderer in das freigelegte Feld (E) einschwenkbar ist. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 535 737; österreichische Patentschrift Nr. 230 309; »Glückauf«, 1962, S. 497 ff.; »Bergbau«, 1962, Heft 6, S. 228 f1.; Streckenausbau in Stahl, v. S p r u t h, 1959, S.196.7. Apparatus according to claim 6, characterized in that the roll applying the mat to the hanging wall is the supply roll. B. Apparatus according to claim 6 or 7, characterized in that the mat laying device (A) can be pivoted into the exposed field (E) from a position above the conveyor. Documents considered: German Patent No. 535 737; Austrian Patent No. 230 309; "Glückauf", 1962, p. 497 ff .; "Bergbau", 1962, issue 6, p. 228 f1 .; Track extension in steel, v. S pruth, 1959, p.196.
DEG43397A 1965-04-21 1965-04-21 Procedure for securing large areas of the hanging slope area exposed in the course of the cutting progress in mining operations Pending DE1281978B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DEG43397A DE1281978B (en) 1965-04-21 1965-04-21 Procedure for securing large areas of the hanging slope area exposed in the course of the cutting progress in mining operations
AT134568A AT275449B (en) 1965-04-21 1966-04-14 Method for securing large areas of the hanging slope area exposed in the course of the excavation progress in mining operations and device for carrying out the method
AT353366A AT269780B (en) 1965-04-21 1966-04-14 Multi-ram, mechanically advanced traveling extension unit
FR58286A FR1514945A (en) 1965-04-21 1966-04-20 Roof shoring system for the mechanized walking support of extraction galleries
GB1740566A GB1168792A (en) 1965-04-21 1966-04-21 Improvements relating to Roof Supports for Mine Workings
GB5396266A GB1168793A (en) 1965-04-21 1966-04-21 Improvements relating to Roof Supports for Mine Workings
US54414566 US3399927A (en) 1965-04-21 1966-04-21 Self-advancing mine roof support including a protective mat for the roof
GB5396666A GB1168794A (en) 1965-04-21 1966-04-21 Improvements relating to Roof Supports for Mine Workings
US3466875D US3466875A (en) 1965-04-21 1968-01-29 Roof supports for mine workings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG43397A DE1281978B (en) 1965-04-21 1965-04-21 Procedure for securing large areas of the hanging slope area exposed in the course of the cutting progress in mining operations

Publications (1)

Publication Number Publication Date
DE1281978B true DE1281978B (en) 1968-11-07

Family

ID=7127173

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG43397A Pending DE1281978B (en) 1965-04-21 1965-04-21 Procedure for securing large areas of the hanging slope area exposed in the course of the cutting progress in mining operations

Country Status (4)

Country Link
US (2) US3399927A (en)
AT (1) AT275449B (en)
DE (1) DE1281978B (en)
GB (3) GB1168792A (en)

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FR2342370A1 (en) * 1976-02-27 1977-09-23 Emka Ing Gmbh Prefabricated tunnel driven below traffic or buildings - has overlapping blade on front above press elements and foil insertion slit

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GB1219897A (en) * 1967-10-10 1971-01-20 Karl Maria Groetschel Improvements relating to roof supports for mine workings
DE1758753C3 (en) * 1968-08-02 1978-10-05 Hippel Geb. Weiss, Sophie Von, 7771 Oberstenweiler Hydraulic longwall construction
GB1294917A (en) * 1970-06-26 1972-11-01
US4099785A (en) * 1975-06-11 1978-07-11 Karl Maria Groetschel Method and apparatus for supporting the roof of an underground mine working
DE2634557C2 (en) * 1976-07-31 1979-06-13 Karl Maria Dipl.-Ing. 8000 Muenchen Groetschel Method and device for producing a protective covering covering the entire expansion of a dismantling strut
US4119346A (en) * 1977-05-02 1978-10-10 M.A.T. Industries, Inc. Longwall mining system
US4230370A (en) * 1978-02-28 1980-10-28 Coal Industry (Patents) Limited Equipment for laying elongate material
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Also Published As

Publication number Publication date
GB1168794A (en) 1969-10-29
AT275449B (en) 1969-10-27
US3466875A (en) 1969-09-16
GB1168793A (en) 1969-10-29
US3399927A (en) 1968-09-03
GB1168792A (en) 1969-10-29

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