US3395542A - Propping frame for mining galleries - Google Patents

Propping frame for mining galleries Download PDF

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Publication number
US3395542A
US3395542A US531236A US53123666A US3395542A US 3395542 A US3395542 A US 3395542A US 531236 A US531236 A US 531236A US 53123666 A US53123666 A US 53123666A US 3395542 A US3395542 A US 3395542A
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US
United States
Prior art keywords
arms
shoe
uprights
frame
piece
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 - Lifetime
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US531236A
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English (en)
Inventor
Deloffre Leon Eloi
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.)
FORGES ET ATELIERS de la NAVE
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FORGES ET ATELIERS de la NAVE
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
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Publication of US3395542A publication Critical patent/US3395542A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/55—Member ends joined by inserted section
    • Y10T403/553—Laterally inserted section

Definitions

  • a propping frame for mine galleries having two uprights slidably interconnected by two arms of a head piece; the arms themselves are slidably clamped to two branches of a shoe; the branches are joined such as to form a pointed arch and are offset with respect to one another to permit the arms to assume an overlapping position.
  • propping frames for mining galleries of a head-piece and two uprights having a trough shaped cross-section said parts being interconnected by clamping members which allow their sliding under the action of the stresses exerted by the ground in which the gallery extends, while the head-piece is constituted by two arms having a radius of curvature which is substantially equal to that of the uprights and the two adjacent ends of which, possibly interconnected by an intermediate section, form with each other an angle which is substantially equal to that formed between the ends of the uprights when collapsed to the maximum extent.
  • Such frames are a substantial improvement over the conventional frames that include two uprights provided with an upper arcuate portion having a radius of curvature which is generally larger than that of the arcuate head-piece. Said improvement results in a reduction of the gaps arising between the ends of the head-piece and the uprights.
  • the undesirable effects of such gaps, such as the permanent deformation of the frame components, are well known.
  • My invention provides such an improvement and it covers a propping frame formed by at least two components assuming, when assembled, the shape of a complete or truncated ogive.
  • the head-piece of the frame has two arcuate arms of substantially equal radius of curvature; the arms are mounted slidingly with respect to each other and are slidably secured to a central shoe in such a manner that they are adapted to assume an overlapping position.
  • the frame may, by proper selection of the radii and of the centers of curvature, slide under the action of oblique and vertical thrusts, or only under the action of oblique thrusts when the direction thereof is known in advance.
  • FIG. 1 is a schematic side elevational view showing
  • FIG. 2 is an enlarged fragmentary view of the headpiece of the frame shown in FIG. 1 with the arms in a different position;
  • FIG. 3 is a front elevational view of the shoe shown in FIGS. 1 and 2;
  • FIG. 4 is a plan view of the shoe shown in FIG. 3;
  • FIGS. 5 and 6 are sectional views taken along lines VV and VIVI of FIG. 3;
  • FIG. 5a is a view of the shoe similar to FIG. 5 showing an arm of the head-piece clamped thereto.
  • the propping frame illustrated in FIG. 1 includes two trough-shaped, symmetrically arranged uprights P1 and P2 each having a rectilinear lower portion and an arcuate upper terminal portion having substantially the same radius of curvature.
  • the upper, arcuate portions of the two uprights P1 and P2 are interconnected by a headpiece formed of a central shoe S and arcuate arms B1, B2 slidably secured thereto and to the uprights.
  • Shoe S includes two integral, symmetrically arranged arcuate branches b1 and b2 having substantially the same radius of curvature and being joined at an angle to form a unitary member having an elevational outline of a pointed arch or ogive.
  • the radius of curvature of arms B1 and B2 and of uprights P1 and P2 is substantially identical to that of branches b1 and b2.
  • the arcuate upper portions of uprights P1 and P2 will also form an ogive at an angle substantially the same as that of branches b1 and b2 of shoe S.
  • the central part of the head-piece is schematically illustrated on a larger scale in FIG. 2 in which it will be remarked that the ends of the arms B1 and B2 engaging the respective branches b1 and b2 of the shoe S are in an overlapping position into which they may be urged by external forces acting, e.g. in the direction of arrows F shown in FIG. 1.
  • the reference characters el and e2 schematically indicate -a clamping means such as a strap or a U-bolt mounted on branch b1 and b2 and adapted, when tightened, to frictionally but slidably urge arms B1, B2 against the respective branch b1, b2 of shoe S.
  • a clamping means such as a strap or a U-bolt mounted on branch b1 and b2 and adapted, when tightened, to frictionally but slidably urge arms B1, B2 against the respective branch b1, b2 of shoe S.
  • the shoe S includes a central section 10 joining the juxtaposed end portions of branches b1 and b2 provided with two parallel troughs or upwardly open channels 8 and 9, respectively.
  • the section of channels 8 and 9 is so designed that it preferably conforms to the contour of the arms B1 and B2 (FIG. 5a) disposed therein.
  • Troughs 8 and 9 include, in the vicinity of their free end, bosses 11 and 13 perforated respectively at 12 and 14 to receive the legs of a clamping means el and 62 adapted to frictionally engage respective arms B1 and B2. As shown in FIG.
  • a clamping means or U-bolt e2 extends transversally across trough 9 while its legs are received by openings 14--14 in boss 13.
  • the threaded bolt ends projecting through openings 14, 14 are provided with nuts 15, 15 which are suitably tightened to clamp arm B2 to branch b2 of shoe S.
  • a similar assembly (not shown) is provided for branch b1.
  • a propping frame as described hereinabove may, under the action of vertical or substantially vertical pressures, subside first symmetrically and then, under the action of subsequent oblique thrusts, continue sinking with a simultaneous sliding of the shoe S and of that arm of the head-piece which is adjacent the point of origin of the pressure.
  • the arms B1 and B2 may assume an overlapping position as shown in FIG. 2.
  • a propping frame for mine galleries of the type including two uprights both having an upper arcuate terminal portion, a head-piece secured to said terminal portions and adapted to slide with respect to said uprights under the action of external forces, said head-piece has two arcuate portions joined in a pointed arch, the improvement in said head-piece comprising, (A) a centrally positioned shoe having (1) two branches extending in opposite directions and having juxtaposed end portions joined together to form said shoe, (2) channel means extending arcuately in each of said branches, said channel means being parallel and ofiset with respect to one another,
  • each of said clamping means includes a portion extending transversally over each of said troughs.
  • clamping means are constituted by U-bolts having leg portions received by openings in said branches on either side of said troughs.
  • each channel and each arm disposed therein are of conforming cross-section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Architecture (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
US531236A 1965-03-04 1966-03-02 Propping frame for mining galleries Expired - Lifetime US3395542A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7942A FR1438325A (fr) 1965-03-04 1965-03-04 Cadre de soutènement pour galeries de mines

Publications (1)

Publication Number Publication Date
US3395542A true US3395542A (en) 1968-08-06

Family

ID=8572810

Family Applications (1)

Application Number Title Priority Date Filing Date
US531236A Expired - Lifetime US3395542A (en) 1965-03-04 1966-03-02 Propping frame for mining galleries

Country Status (4)

Country Link
US (1) US3395542A (fr)
BE (1) BE664671A (fr)
ES (1) ES323819A1 (fr)
FR (1) FR1438325A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890752A (en) * 1973-06-23 1975-06-24 Banbury Buildings Holdings Ltd Securing glazing rails together
US5292209A (en) * 1993-05-14 1994-03-08 Jennmar Corporation Bearing plate
US6102628A (en) * 1998-03-30 2000-08-15 Council Of Scientific & Industrial Research Arch useful for withstanding effect of rockburst occurring in underground mines/tunnels

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8507218A1 (es) * 1984-11-16 1985-08-16 Gordun Burillo Fernando Un procedimiento de impermeabilizacion de superficies, de especial aplicacion a las superficies interiores de tuneles, canales y mineria
GB2240353A (en) * 1990-01-25 1991-07-31 British Steel Plc Underground support arch.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR802413A (fr) * 1936-02-26 1936-09-04 Hermann Schwarz Cintre de revêtement pour galeries et autres
DE694540C (de) * 1938-04-30 1940-08-02 F W Moll Soehne Eiserner Grubenausbau
DE936262C (de) * 1951-03-28 1955-12-07 Bochumer Eisen Heintzmann Eiserner Tuerstockausbau
GB976923A (en) * 1962-01-08 1964-12-02 Usinor Improvements in or relating to mine arches
US3283514A (en) * 1962-09-29 1966-11-08 Applic Scient Tech Ind Et Comm Sliding bearer-sets for mine galleries

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR802413A (fr) * 1936-02-26 1936-09-04 Hermann Schwarz Cintre de revêtement pour galeries et autres
DE694540C (de) * 1938-04-30 1940-08-02 F W Moll Soehne Eiserner Grubenausbau
DE936262C (de) * 1951-03-28 1955-12-07 Bochumer Eisen Heintzmann Eiserner Tuerstockausbau
GB976923A (en) * 1962-01-08 1964-12-02 Usinor Improvements in or relating to mine arches
US3283514A (en) * 1962-09-29 1966-11-08 Applic Scient Tech Ind Et Comm Sliding bearer-sets for mine galleries

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890752A (en) * 1973-06-23 1975-06-24 Banbury Buildings Holdings Ltd Securing glazing rails together
US5292209A (en) * 1993-05-14 1994-03-08 Jennmar Corporation Bearing plate
USRE35902E (en) * 1993-05-14 1998-09-22 Jennmar Corporation Bearing plate
US6102628A (en) * 1998-03-30 2000-08-15 Council Of Scientific & Industrial Research Arch useful for withstanding effect of rockburst occurring in underground mines/tunnels

Also Published As

Publication number Publication date
FR1438325A (fr) 1966-05-13
BE664671A (fr) 1965-09-16
ES323819A1 (es) 1967-01-16

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