US3415064A - Supporting device for rock walls - Google Patents

Supporting device for rock walls Download PDF

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Publication number
US3415064A
US3415064A US636235A US63623567A US3415064A US 3415064 A US3415064 A US 3415064A US 636235 A US636235 A US 636235A US 63623567 A US63623567 A US 63623567A US 3415064 A US3415064 A US 3415064A
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US
United States
Prior art keywords
rock
bolt
wall
supporting
rock wall
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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US636235A
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English (en)
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Talobre Joseph Antoine
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Individual
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Individual
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Publication of US3415064A publication Critical patent/US3415064A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0086—Bearing plates

Definitions

  • a device used in combination with rock bolts for supporting rock walls including a plurality of shell-shaped members through which one end of a rock bolt passes and is fastened.
  • the members have long extending arms which effectively engage a large substantial surface of the wall.
  • This invention relates to construction apparatus generally, and more particularly, to a supporting device for rock walls, or the like.
  • the present invention contemplates a structure which overcomes the defects of the prior art devices.
  • the present invention comprises a new and improved device for use in conjunction with a rock bolt for supporting rock walls.
  • the device includes a convex shell-shaped member which has a central zone with a hole therein for the passage of the rock bolt. Means are provided for connecting the bolt to the member.
  • This member has a plurality of radially extending arms which are adapted to engage the rock wall when the device is in its operating position.
  • the convex shell-shaped member is axially resilient in order to enhance its ability to grip a rock wall.
  • This resiliency serves to improve the gripping action particularly when the rock surface is irregular, thereby insuring a greater distribution of the load.
  • this resiliency helps to limit the forces bearing on the rock bolt and nut.
  • the resiliency of the supporting device allows it to adapt to rock bolts disposed at oblique angles with respect thereto, thereby reducing the risk of failure due to bending moments.
  • the radially extending arms have axially inwardly projecting edges which enhance the gripping action with the rock wall. This increases the moment of inertia of the arms without losing the elasticity of the supporting device. Also, this provides a cavity of space for the introduction of cement grouting between the rock wall and the supporting member.
  • the arms may be provided with openings for filling this space with the grouting.
  • the end of the arms may be provided with grasping claws to assist in engaging the rock and to insure contact between the device and the rock wall at points disposed a substantial distance one from the other, thereby spreading the reaction forces against the rock wall over a substantial distance.
  • the device according to the invention may have a dome or convex shell-shaped member which has a 3,415,064 Patented Dec. 10, 1968 ice cavity of axial depth which may be filled with cement grouting.
  • This grouting serves to improve the disposition of the load forces on the rock wall as well as protecting the bolt head and nut against rusting after long periods of service.
  • the arms are symmetrical and in the shape of a star or rose.
  • three arms are employed, which is satisfactory from an operational standpoint and is economical to fabricate.
  • the convex shell-shaped member may be fabricated with a thin wall such as from steel plate, for example. Certain plastic materials may be employed for their anti-rust properties, if desired.
  • the combination of a thin wall with a star configuration of the supporting member serves to provide a large resilient supporting area, thereby limiting the compression stress against the rock wall, and hence, reducing the possibility of crushing said wall.
  • the shape of the supporting member renders it possible to employ a plurality of members in superimposed positions, one with respect to the others.
  • the center zone of the convex shell-shaped member has a semispherical surface having a central opening through which passes the end of the rock bolt. This end of the rock bolt is threaded and a nut and washer are secured thereto.
  • the washer if a washer is employed, or else the nut itself, is adapted to bear against the inside of the semispherical surface, thereby permitting the rock bolt to be disposed at any oblique angle with respect to the wall supporting member.
  • FIG. 1 is a perspective view of a device constructed in accordance with the concept of this invention.
  • FIG. 2 is a medial cross-sectional view of the supporting device as applied to a rock wall.
  • the supporting device includes a convex shell-shaped member indicated generally at 10, this member has a central zone 12 with a central opening 14 for the passage of one end of a rock bolt 16, as seen in FIG. 2.
  • the member is axially resilient. That is, the member is resilient in a direction substantially parallel to the rock bolt 16 for purposes of improving the gripping action with the surface of the rock wall 18, FIG. 2. Further, as seen in FIG. 2, this resiliency improves the gripping action when the rock wall 18 is of irregular configuration, as shown at 20, and it also allows the rock bolt 16 to be disposed at an oblique angle with respect to said member 10, as shown at 22.
  • the member 10 is symmetrical and is generally rose or star shaped, and preferably has three radially extending arms 24, 26, and 28. This serves to extend the member over as large an area of the rock wall as possible without unduly increasing the overall size of the member.
  • a member is provided with inwardly projecting edges 30, 32 and 34 which enhance the gripping action of the rock wall.
  • the arms are provided with claws 36, 3S and 40 for additional gripping action and to spread the reaction forces against the rock wall over a substantial area.
  • the member 10 is dome or convex shell-shaped forming a cavity 42 of axial depth.
  • the inwardly projecting edges 30, 32 and 34, as well as the claws 36, 38 and 40 help to form outside walls for the cavity 42.
  • the member 10 is provided with opening 44, one being shown in arm 26, FIG. 1, for filling the cavity 42, FIG. 2 with cement grouting 43.
  • the entire cavity may be filled with grouting and serves to spread the load forces acting against the rock wall over a large area, thereby removing the concentration of same. This also improves the gripping action between the member 10 and the rock wall 18.
  • the rock wall 18 has a bore 46 through which a rock bolt 16 passes.
  • the contra-zone 12 of the member 10 has asemi-spherical surface 48 having a central opening 14 through which passes one end of the bolt 16. This end of the bolt is provided with a screw thread on which a washer 52 and a nut 54 are applied.
  • the washer 52, or if no washer is employed, the nut 54 engages the semi-spherical surface 48 as at 56 to secure the member 10 against the rock wall 18 with considerable force.
  • the rock bolt 16 may be disposed at any oblique angle 22 with respect to the rock wall and member 10 and still be held firmly in position.
  • the cement grouting 43 also serves to prevent the bolt head and nut from corroding after long periods of installation.
  • the member It) is fabricated with thin walls and from steel plates by cutting and machining, for example. It provides a resilient, durable member.
  • a second convex shell-shaped member 10' of identical shape as the first convex shell-shaped member 10 described hereinbefore may be interposed between the first member 10 and the rock wall 1.8.
  • This serves to allow for an increased force to be applied to the rock wall 18.
  • Employing a plurality of superimposed members has a number of advantages including allowing mass production of members which may be used for various installations, each having individual force requirements. Also, the transportation and installation of a plurality of members is simpler than employing a single, heavy, large member.
  • a device for use in combination with a rock bolt for supporting rock walls comprising a plurality of convex shell-shaped members having a central open ing for the passage of one end of the rock bolt, means for connecting said bolt to said member, and said members having long extending arms which are effectively engageable with said rock wall on a large substantial surface when in operating position.
  • a device for use in combination with a rock bolt for Supporting rock walls comprising a convex shell-shaped member having a central zone with a central opening for the passage of one end of the rock bolt, said member being axially resilient, said member being substantially star shaped and having three radially extending arms, said member having inwardly projecting edges for gripping said rock wall, said arms having claws disposed at the ends thereof for gripping said wall, said arms having openings for the passage of grouting, said member having a cavity of axial depth for receiving grouting between said member and said rock wall when in its operating position, a nut and a washer fastenable on the end of said bolt, said central zone having a semi-spherical surface for receiving said bolt and washer, whereby said bolt may be obliquely disposed with respect to said member.
  • a device for use in combination with a rock bolt for supporting rock walls comprising a plurality of convex shell-shaped members which are used in superimposed relationship one with respect to the next adjacent one, said members having a central zone with a central opening for the passage of one end of the rock bolt, means for connecting said bolt to said members, and said members having a plurality of radially extending arms which are engageable with said rock wall when in operating position.
  • a device for use in combination with a rock bolt for supporting rock walls comprising a convex shell-shaped member having a central zone with a central opening for the passage of one end of the rock bolt, said member being axially resilient for gripping said rock wall when in operating position, means for connecting said bolt to said member, and said member having a plurality of radially extending arms which are engageable with said rock wall when in operating position, said arms having axially inwardly projecting edges which grip said rock wall when in operating position, said arms having openin gs therein for filling the space between the member and the rock wall with grouting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Dowels (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Connection Of Plates (AREA)
  • Joining Of Building Structures In Genera (AREA)
US636235A 1966-04-22 1967-04-17 Supporting device for rock walls Expired - Lifetime US3415064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR58657A FR1499940A (fr) 1966-04-22 1966-04-22 Dispositif de soutènement des parois rocheuses

Publications (1)

Publication Number Publication Date
US3415064A true US3415064A (en) 1968-12-10

Family

ID=8606854

Family Applications (1)

Application Number Title Priority Date Filing Date
US636235A Expired - Lifetime US3415064A (en) 1966-04-22 1967-04-17 Supporting device for rock walls

Country Status (8)

Country Link
US (1) US3415064A (xx)
BE (1) BE688543A (xx)
CH (1) CH448941A (xx)
DE (1) DE6601214U (xx)
ES (1) ES336780A1 (xx)
FR (1) FR1499940A (xx)
GB (1) GB1186083A (xx)
NL (1) NL6703117A (xx)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037418A (en) * 1976-05-12 1977-07-26 Phillips Stamping Co., Inc. Load supporting bearing plate
US4095430A (en) * 1976-05-12 1978-06-20 Phillips Stamping Co., Inc. Load supporting bearing plate
US4095431A (en) * 1976-05-12 1978-06-20 Phillips Stamping Co., Inc. Load supporting bearing plate
US4293243A (en) * 1979-02-14 1981-10-06 Carl N. Graybeal Mine roof bolt assembly guard
US4371293A (en) * 1978-09-25 1983-02-01 Wilcox Raymond J Mine roof bearing plate
US4518282A (en) * 1981-08-27 1985-05-21 Republic Corporation Mine roof bearing plate with embossed area having conical and cylindrical sections
US4618290A (en) * 1983-06-27 1986-10-21 Hansen Roger M Precast roof bearing block
US4708559A (en) * 1986-07-08 1987-11-24 F. M. Locotos Co., Inc. Reinforcing washer for a mine roof bolt assembly
US4781503A (en) * 1983-06-22 1988-11-01 Sfs Stadler Ag Fastener assembly for securing roofing on a soft insulation material to a solid base
US5171116A (en) * 1990-03-16 1992-12-15 Wsp Ingenieurgesellschaft Fur Warmetechnik, Stromungstechnik Und Prozesstechnik Attachment assembly for securing roofing membranes
US5292209A (en) * 1993-05-14 1994-03-08 Jennmar Corporation Bearing plate
US6282857B1 (en) * 2000-03-09 2001-09-04 Sarnafil, Inc. Articulating plate assembly for retaining sheets of roofing material on a roof surface
US6682268B2 (en) * 2000-09-01 2004-01-27 Earl Products, Inc. Method and apparatus for secondary roof support in an underground mine
US20080286073A1 (en) * 2007-05-17 2008-11-20 The Boeing Company Hybrid contoured load-spreading washer
US20090003965A1 (en) * 2007-05-17 2009-01-01 The Boeing Company Hybrid Contoured Load-Spreading Washer
WO2009134139A1 (en) * 2008-04-28 2009-11-05 Dynamic Rock Support As Surface retaining face plate for rock bolts
US20090285641A1 (en) * 2007-11-19 2009-11-19 Hendrick Richard M Mine roof and rib support device
US20100054870A1 (en) * 2007-11-19 2010-03-04 Jennmar Corporation Mine roof and rib support with reinforced channel
US20110297057A1 (en) * 2010-06-08 2011-12-08 Kennedy Metal Products & Buildings, Inc. High-strength anchor system, safe room bulkhead, and method of anchoring a support to mine strata
US20130087138A1 (en) * 2010-05-31 2013-04-11 Rioglass Solar, S.A. System and method for the articulated attachment of solar reflector elements to supporting structures
WO2015062905A1 (de) * 2013-11-01 2015-05-07 Geobrugg Ag Schutznetz, insbesondere für eine böschungssicherung, sowie eine dazugehörige krallplatte

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2821075A1 (de) * 1978-05-13 1979-11-22 Brochier Fa Hans Vorrichtung zum ziehen von schalungstafeln o.dgl.
DE3030634A1 (de) * 1980-08-13 1982-03-11 Klaus-Werner Dipl.-Ing. 2000 Hamburg Schirm Erdanker
GB8713303D0 (en) * 1987-06-06 1987-07-08 Gibson B Washer plate arrangement
FR2641295B1 (fr) * 1989-01-03 1991-12-13 Flourens Bruno Procede et dispositif pour l'ancrage des ecailles de soutien d'un mur en terre armee
FR2796091A1 (fr) 1999-07-09 2001-01-12 Bouygues Travaux Publics Plaque d'appui de repartition de la charge d'un tirant et ses applications

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090203A (en) * 1958-03-03 1963-05-21 Anciens Ets Goldenberg & Cie Support plate for an anchoring device
GB968630A (en) * 1961-05-23 1964-09-02 Anciens Ets Goldenberg & Cie Improvements in or relating to a method of mounting anchoring devices in the ground and anchoring plates for carrying out said method
US3226934A (en) * 1961-05-16 1966-01-04 C I M Consultants Ltd Rock bolts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090203A (en) * 1958-03-03 1963-05-21 Anciens Ets Goldenberg & Cie Support plate for an anchoring device
US3226934A (en) * 1961-05-16 1966-01-04 C I M Consultants Ltd Rock bolts
GB968630A (en) * 1961-05-23 1964-09-02 Anciens Ets Goldenberg & Cie Improvements in or relating to a method of mounting anchoring devices in the ground and anchoring plates for carrying out said method

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037418A (en) * 1976-05-12 1977-07-26 Phillips Stamping Co., Inc. Load supporting bearing plate
US4095430A (en) * 1976-05-12 1978-06-20 Phillips Stamping Co., Inc. Load supporting bearing plate
US4095431A (en) * 1976-05-12 1978-06-20 Phillips Stamping Co., Inc. Load supporting bearing plate
US4371293A (en) * 1978-09-25 1983-02-01 Wilcox Raymond J Mine roof bearing plate
US4293243A (en) * 1979-02-14 1981-10-06 Carl N. Graybeal Mine roof bolt assembly guard
US4518282A (en) * 1981-08-27 1985-05-21 Republic Corporation Mine roof bearing plate with embossed area having conical and cylindrical sections
US4781503A (en) * 1983-06-22 1988-11-01 Sfs Stadler Ag Fastener assembly for securing roofing on a soft insulation material to a solid base
US4618290A (en) * 1983-06-27 1986-10-21 Hansen Roger M Precast roof bearing block
US4708559A (en) * 1986-07-08 1987-11-24 F. M. Locotos Co., Inc. Reinforcing washer for a mine roof bolt assembly
US5171116A (en) * 1990-03-16 1992-12-15 Wsp Ingenieurgesellschaft Fur Warmetechnik, Stromungstechnik Und Prozesstechnik Attachment assembly for securing roofing membranes
US5292209A (en) * 1993-05-14 1994-03-08 Jennmar Corporation Bearing plate
USRE35902E (en) * 1993-05-14 1998-09-22 Jennmar Corporation Bearing plate
US6282857B1 (en) * 2000-03-09 2001-09-04 Sarnafil, Inc. Articulating plate assembly for retaining sheets of roofing material on a roof surface
US6682268B2 (en) * 2000-09-01 2004-01-27 Earl Products, Inc. Method and apparatus for secondary roof support in an underground mine
US20080286073A1 (en) * 2007-05-17 2008-11-20 The Boeing Company Hybrid contoured load-spreading washer
US20090003965A1 (en) * 2007-05-17 2009-01-01 The Boeing Company Hybrid Contoured Load-Spreading Washer
US8528874B2 (en) * 2007-05-17 2013-09-10 The Boeing Company Hybrid contoured load-spreading washer
US8511034B2 (en) * 2007-05-17 2013-08-20 The Boeing Company Hybrid contoured load-spreading washer
US8197160B2 (en) 2007-11-19 2012-06-12 Fci Holdings Delaware, Inc. Mine roof and rib support with reinforced channel
US7794181B2 (en) * 2007-11-19 2010-09-14 Fci Holdings Delaware, Inc. Mine roof and rib support device
US20100054870A1 (en) * 2007-11-19 2010-03-04 Jennmar Corporation Mine roof and rib support with reinforced channel
US20090285641A1 (en) * 2007-11-19 2009-11-19 Hendrick Richard M Mine roof and rib support device
WO2009134139A1 (en) * 2008-04-28 2009-11-05 Dynamic Rock Support As Surface retaining face plate for rock bolts
US20130087138A1 (en) * 2010-05-31 2013-04-11 Rioglass Solar, S.A. System and method for the articulated attachment of solar reflector elements to supporting structures
US20110297057A1 (en) * 2010-06-08 2011-12-08 Kennedy Metal Products & Buildings, Inc. High-strength anchor system, safe room bulkhead, and method of anchoring a support to mine strata
US8162569B2 (en) * 2010-06-08 2012-04-24 Kennedy Metal Products & Buildings, Inc. High-strength anchor system, safe room bulkhead, and method of anchoring a support to mine strata
WO2015062905A1 (de) * 2013-11-01 2015-05-07 Geobrugg Ag Schutznetz, insbesondere für eine böschungssicherung, sowie eine dazugehörige krallplatte

Also Published As

Publication number Publication date
ES336780A1 (es) 1968-01-16
GB1186083A (en) 1970-04-02
NL6703117A (xx) 1967-10-23
BE688543A (xx) 1967-03-31
FR1499940A (fr) 1967-11-03
CH448941A (fr) 1967-12-31
DE6601214U (de) 1969-03-06

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